小学启蒙保外拓展
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 小学启蒙保外拓展https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 011-历史大百科动画（121集）
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 008-初中政治动画
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 009-看动画学初中古诗（162集）
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 004-看动画学化学（354集）
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 005-看动画学地理（96集）
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 001-乐乐课堂1-6年级奥数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 010-看动画学音标（22集）
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 002-宝藏英语语法动画片（207集）
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 006-看动画学生物（182集）
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 003-看动画学物理（144集）
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 20个视频初中政治七年级下册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 18个视频初中政治八年级下册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 22个视频初中政治八年级上册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 16个视频初中政治九年级上册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 14个视频初中政治九年级下册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 21个视频初中政治七年级上册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 02.历史大百科国际关系动画9集
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 01.历史大百科动画112集
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 9年级下册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 7年级下册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 8年级下册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 9年级上册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 8年级上册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 7年级上册
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 30.化学肥料【6节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 20.燃烧和灭火【9节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 11.爱护水资源【3节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 05.氧气【10节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 23.金属资源的利用和保护【12节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 19.二氧化碳和一氧化碳【12节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 31.人类重要的营养物质【12节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 22.金属的化学性质【15节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 02.化学是一门以实验为基础的科学【6节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 10.元素【9节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 27.常见的酸和碱【33节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 09.原子的结构【11节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 33.有机合成材料【12节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 07.氧气的实验室制取与性质【9节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 15.质量守恒定律【5节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 17.金刚石、石墨和C60【8节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 06.制取氧气【11节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 32.化学元素与人体健康【11节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 13.水的组成【9节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 25.溶解度【14节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 16.如何正确的书写化学方程式【5节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 26.溶液的浓度【12节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 14.化学式和化合价【8节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 04.空气【6节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 08.分子和原子【8节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 29.生活中常见的盐【14节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 03.走进化学实验室【16节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 18.二氧化碳的制取和探究【8节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 12.水的净化【11节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 28.酸和碱的中和反应【9节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 24.溶液的形成【12节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 21.金属材料【15节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 01.物质的变化和性质【8节】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 01-看动画学音标（22集）
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 02-PDF讲义附件
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 英语2
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 英语1
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 英语3
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 2年级奥数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 3年级奥数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 6年级奥数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 5年级奥数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 4年级奥数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 1年级奥数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 03.东半球其他地区和国家【8课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 06.中国的自然环境【5课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 05.从世界看中国【3课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 11.中国在世界中【3课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 10.青藏地区【5课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 09.西北地区【4课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 04.西半球的国家【9课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 01.地球和地图【17课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 07.北方地区【12课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 08.南方地区【12课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 02.中国邻近的地区和国家【18课时】
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07、2.4.1青春的情绪.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01、1.1.1悄悄变化的我.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 08、2.4.2情绪的管理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16、3.8.2我与集体共成长.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19、4.10.1法律为我们护航.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10、2.5.2在品味情感中成长.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17、4.9.1生活需要法律.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04、1.2.2青春萌动.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18、4.9.2法律保障生活.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15、3.8.1憧憬美好集体.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05、1.3.1青春飞扬.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02、1.1.2成长的不仅仅是身体.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01、1.1.1公民权利的保障书.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11、3.5.3基本政治制度.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04、1.2.2加强宪法监督.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13、3.6.2国际行政机关.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10、3.5.2根本政治制度.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15、4.7.1自由平等的真谛.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17、4.8.1公平正义的价值.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 105.带电现象 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.如何判断物体是否运动 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 123.串联电路的电阻关系 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 66.影响压力作用效果的因素 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 34.光的折射.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 138.安倍定律 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 103.比热容的应用 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 62.滑动摩擦力受什么影响(上）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23.汽化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 69.带你认识连通器 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 65.什么是压力 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 53.重力的大小.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 60.摩擦力是什么.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 59.二力平衡的条件 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 40.透镜的焦点和焦距.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 74.大气压受什么影响 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21.晶体的熔化与凝结.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 43.质量的单位.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 31.光的直线传播的应用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.变速运动与平均速度.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 142.电磁感应 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 131.家庭电路的组成 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 88.机械能及其转化 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 35.光的折射规律.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13.靠什么区分发声的物体.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 115.串联电路电压特点 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 90.如何画出力臂 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 134.磁场和磁感线 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 73.测量大气压 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 80.浮力的应用 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18.体温计.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15.温度.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 92.杠杆如何分类 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 137.通电螺旋管 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 132.安全用电 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 82.什么是有用功和额外功 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 89.什么叫杠杆 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19.物质的三态变化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 72.液体的压强的大小跟什么有关 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 130.焦耳定律 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17.液体温度的测量.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 64.增大或减小摩擦的方法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 54.重心的作用点.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 94.认识滑轮组 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 42.质量.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12.声音的高低.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 91.杠杆如何平衡 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 57.什么是惯性.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 144.核能 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 61.摩擦力有几种 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 75.流体压强与流速的关系 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 139.电磁铁 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 112.并联电路电流特点 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 85.运动中具有的能-动能 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 83.功率是什么 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29.光是哪里来的.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 33.镜面反射和漫反射.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20.熔化和凝固.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 111.串联电路 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 113.电压 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 78.浮力是如何产生的 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 141.磁场对通电导线的作用 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 126.电能表 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 76.流体压强的应用 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 104.能量守恒定律 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.声音的大小.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 97.分子热运动 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 140.磁继电器 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 101.改变物体的内能的方法之热传递 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 67.什么是压强 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.实验时的误差 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14.噪声防治.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 119.电阻箱 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.匀速直线运动 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 63.滑动摩擦力大小受什么影响（下）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51.弹力.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 95.什么叫机械效率 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 107.原子结构 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 6.生物圈生命的延续【37课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 5.生物圈中的人【43课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 4.细菌、真菌和动物多样性【22课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 1.生物、生物圈和生物体的机构层次【27课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 2.生物圈中的绿色植物【30课时】
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 3.动物的类群、行为和作用【23课时】
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13、3.7.1回望成长.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06、2.3.2与世界深度互动.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07、2.4.1中国的机遇与挑战.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02、1.1.2复杂多变的关系.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01、1.1.1开放互动的世界.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03、1.2.1学习伴成长.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18、4.9.1守护生命.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09、2.5.1让友谊之树常青.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10、2.5.2网上交友新时空.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02、1.1.2少年有梦.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07、2.4.1和朋友一起成长.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14、3.7.2爱在家人间.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11、3.6.1走近老师.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21、4.10.2活出生命的精彩.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17、4.8.2敬畏生命.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16、4.8.1生命可以永恒吗.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19、4.9.2增强生命的韧性.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06、2.3.2遵守规则.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09、2.4.3诚实守信.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21、4.10.1关心国家发展.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11、2.5.2预防犯罪.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04、1.2.2合理利用网络.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02、1.1.2在社会中成长.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13、3.6.1我对谁负责 谁对我负责.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18、4.8.2坚持国家利益至上.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14、3.6.2做负责人的人.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02、1.1.2走向共同富裕.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03、1.2.1创新改变生活.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13、4.7.1促进民族团结.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14、4.7.2维护祖国统一.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15、4.8.1我们的梦想.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11、3.6.1正视发展挑战.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16、4.8.2共圆中国梦.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12、3.6.2共筑生命家园.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04、1.2.2创新永无止境.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07、2.4.1夯实法治基石.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09、3.5.1延续文化血脉.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05. 日本.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09. 经济格局的演变.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03. 英国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07. 近现代国际关系的演变.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 08. 政治格局的演变.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06. 国际关系的内在精神.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01. 战争是政治的延续.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04. 美国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.16《满江红（小住京华）》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.12《渔家傲·秋思》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.19《曹刿论战》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.39《过零丁洋》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.07《送东阳马生序》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.38《南乡子·登京口北固亭有怀》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.05《唐雎不辱使命》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.26《陈涉世家》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.18《曹刿论战》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.09《送东阳马生序》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.31《陈涉世家》6.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.28《陈涉世家》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.24《出师表》4.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.29《陈涉世家》4.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.30《陈涉世家》5.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.32《邹忌讽齐王纳谏》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.23《出师表》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.11《送东阳马生序》5.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.33《邹忌讽齐王纳谏》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.10《送东阳马生序》4.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.17《满江红（小住京华）》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.08《送东阳马生序》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.06《唐雎不辱使命》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.01《鱼我所欲也》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.21《出师表》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.15《破阵子》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.22《出师表》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.02《鱼我所欲也》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9下.35《十五从军征》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.20《河中石兽》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.01《孙权劝学》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.19《河中石兽》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.05《木兰诗》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.18《河中石兽》——姑妄听之.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.16《游山西村》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.07《卖油翁》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.11《爱莲说》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.14《望岳》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.17《己亥杂诗》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.15《登飞来峰》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.13《登幽州台歌》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.10《陋室铭》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7下.06《木兰诗》4.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 046.抗日战争的胜利.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 035.洋务运动和甲午中日战争.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 078.马克思主义的诞生和国际工人运动的兴起.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 047.内战爆发与解放战争的胜利.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 091.民族关系.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 062.外交事业.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 065.古希腊.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 086.冷战结束后的世界.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 001.中国早期人类的代表——北京人.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 056.建设中国特色社会主义.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 069.古代日本.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 064.古代亚非文明.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 029.清朝前期社会经济的发展.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 099.中国近代的半殖民地化与求索.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 108.资本主义的发展历程.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 031.清朝前期的文学艺术.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 010.秦王朝的建立与崩溃.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 111.古今思想文化流变.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 067.法兰克王国和拜占庭帝国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 073.探寻新航路与早期殖民掠夺.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 015.魏晋南北朝的科技与文化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 008.百家争鸣.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 089.中央政治.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 027.明朝的灭亡.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 050.土地改革.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 024.明朝的统治.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 007.战国时期的社会变化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 092.边疆治理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 016.盛唐气象.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 106.党建会议核心密码.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 084.第二次世界大战.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 048.中华人民共和国的成立.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 045.全民族抗战.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 011.两汉的兴亡.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 014.东晋与北魏时期.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 087.政治沿革的内在精神.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 034.太平天国运动.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 061.国防建设.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 081.第一次世界大战与十月革命.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 019.金与南宋的对峙.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 058.民族团结与祖国统一.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 018.北宋政治及其与辽、西夏的并立.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 101.自强求索.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 080.第二次工业革命.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 063.科技文化成就.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 017.唐朝的中外文化交流与衰亡.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 044.九一八事变、西安事变和七七事变.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 040.中国共产党的产生.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 004.早期国家的产生和发展.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 025.明朝的对外关系.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 059.香港和澳门的回归.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 021.蒙古族的兴起与元朝的统治.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 049.抗美援朝.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 068.中世纪的乡村与城市.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 057.为实现中国梦而努力奋斗.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 076.法国大革命和拿破仑帝国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 052.社会主义建设的艰辛探索.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 098.拒绝改变的传统中国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 079.资本主义制度的扩展.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 012.秦汉时期的经济、科技与文化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 042.毛泽东开辟井冈山道路.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 088.中国古代的政治沿革.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 060.海峡两岸的交往.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 070.阿拉伯帝国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 030.清朝君主专制的强化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 103.中国共产党的奋斗历程.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 033.第二次鸦片战争.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 090.地方政治.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 100.半殖民地化历程.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 071.西欧经济和社会的发展.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 006.动荡的春秋时期.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 013.三国鼎立与西晋的短暂统一.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 003.远古传说.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 085.冷战时期的世界.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 109.资本主义发展公式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 110.历史是记忆.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 054.伟大的历史转折——十一届三中全会.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 102.红星照耀中国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 026.明朝的科技、建筑与文学.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 075.美国的独立.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 112.思想流变公式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 104.新民主主义革命.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.14《黄鹤楼》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.02《三 峡》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.01《三 峡》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.09《钱塘湖春行》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.16《富贵不能淫》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.26《周亚夫军细柳》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.06《与朱元思书》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.25《周亚夫军细柳》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.03《记承天寺夜游》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.19《生于忧患，死于安乐》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.28《周亚夫军细柳》4.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.24《愚公移山》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.15《富贵不能淫》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.13《黄鹤楼》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.32《渔家傲》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.10《渡荆门送别》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.17《生于忧患，死于安乐》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.21《得道多助，失道寡助》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.07《与朱元思书》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.22《愚公移山》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.31《赤壁》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.08《与朱元思书》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.27《周亚夫军细柳》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.05《答谢中书书》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.23《愚公移山》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8上.20《得道多助，失道寡助》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.12《论语》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.23《穿井得一人》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.05《天净沙·秋思》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.19《狼》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.02《观沧海》习题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.17《诫子书》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.07《咏雪》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.04《次北固山下》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.09《陈太丘与友期》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.22《穿井得一人》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.20《狼》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.24《杞人忧天》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.01《观沧海》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.14《论语》4.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.03《闻王昌龄左迁龙标遥有此寄》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.16《诫子书》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.13《论语》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.11《论语》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7上.06《咏雪》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.17《庄子与惠子游于濠梁之上》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.02《桃花源记》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.05《小石潭记》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.26《卖炭翁》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.20《大道之行也》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.28《卖炭翁》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.29《石壕吏》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.07《小石潭记》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.22《马说》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.24《茅屋为秋风所破歌》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.23《马说》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.27《卖炭翁》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.04《桃花源记》4.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.15《北冥有鱼》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.19《虽有佳肴》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.01《桃花源记》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.18《庄子与惠子游于濠梁之上》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.11《核舟记》4.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8下.09《核舟记》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9上.08《湖心亭看雪》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9上.05《醉翁亭记》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9上.06《醉翁亭记》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9上.10《行路难（其一）》.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9上.02《岳阳楼记》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9上.04《醉翁亭记》1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9上.03《岳阳楼记》3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9上.09《湖心亭看雪》2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.化肥简介例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.化肥简介.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.化肥的鉴别.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.化肥的鉴别例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.化肥的鉴别例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.爱护水资源.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.燃烧的条件例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.燃烧的条件例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.生活中灭火一百招.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.灭火的原理例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.生活中灭火一百招例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.灭火的原理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.生活中的氧化反应例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.化合反应例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.化合反应例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.生活中的氧化反应例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.氧气的物理性质.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.金属资源的保护.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.金属的腐蚀与防护例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.铁的冶炼.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.常见金属的存在形式例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.金属资源的保护例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.常见金属的存在形式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.金属的腐蚀与防护例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14.置换反应（二）（实验）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.金属与氧气的反应例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.金属活泼性顺序.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12.金属活泼性顺序例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15.置换反应（三）（实验）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.金属和酸的反应例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.置换反应例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.置换反应.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.金属与氧气的反应例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.金属和酸的反应例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.金属与氧气的反应.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.油脂.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12.维生素例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.油脂例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.蛋白质.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.葡萄糖例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.二氧化碳的物理性质.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.一氧化碳和二氧化碳的对比.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.干冰.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.一氧化碳的还原性.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.干冰例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.对蜡烛及其燃烧的探究.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.科学探究的方法及意义例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.科学探究的方法及意义例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.原子的核外电子排布例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.离子.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.离子例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.原子的构成例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.原子的核外电子排布.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.原子的构成.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27.酸的通性例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.盐酸例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13.浓硫酸的稀释.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 32.酸碱有通性的原因例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30.碱的通性例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21.氢氧化钠的性质及用途例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.浓硫酸的腐蚀性.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.酸碱指示剂例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20.氢氧化钠的性质及用途例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16.盐酸的用途.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25.酸的通性.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.浓硫酸的腐蚀性例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.酸碱指示剂.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.盐酸例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.酸碱指示剂例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 33.酸碱有通性的原因例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24.氢氧化钙的性质和用途例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23.氢氧化钙的性质和用途例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.硫酸的性质例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 31.酸碱有通性的原因.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28.碱的通性.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.盐酸.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.元素符号例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.元素周期表.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.元素周期表例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.元素例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.元素.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.元素符号.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.元素符号例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.质量守恒定律.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.氧气的收集和验满例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.氧气的制取装置的选取例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.氧气的收集和验满.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.氧气的收集和验满例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.高锰酸钾制氧气的步骤例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.有机化合物例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.合成材料与环境问题例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.天然纤维.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.合成材料与环境问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.天然纤维例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.天然纤维例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.有机化合物.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.单质碳与某些氧化物的反应例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.单质碳与某些氧化物的反应例3.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.C60.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.金刚石和石墨.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.单质碳与某些氧化物的反应.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.碘例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.氟例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.氟.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.人体中的元素例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.钙.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.钙例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.钙例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.分解反应例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.分解反应例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.工业制氧气.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.高锰酸钾制取氧气例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.工业制氧气例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.催化剂例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.催化剂.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.固体溶解度例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.固体溶解度.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.结晶例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13.气体溶解度.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14.气体溶解度例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.溶解度曲线.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.饱和溶液与不饱和溶液.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.饱和溶液与不饱和溶液例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.结晶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.溶解度曲线例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.单质化合物和氧化物.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.电解水实验例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.氢气的性质例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.单质化合物和氧化物例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.单质化合物和氧化物例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.氢气的性质例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.根及其化合价.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.化学式及其意义.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.化合价规则.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.化合价的计算（二）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.化学式的书写.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.有关相对分子质量的计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.初识化学方程式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.化学方程式的配平（二）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.书写化学方程式遵守的两个原则.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.配平方程式步骤和符号使用规则.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.空气的组成.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.空气的作用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.空气的组成例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.保护空气.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.浓溶液和稀溶液例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.浓溶液的稀释例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.溶质质量分数的计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.浓溶液的稀释.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.浓溶液的稀释例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.溶质质量分数的计算例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.溶质质量分数的计算例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.浓溶液和稀溶液.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.微观粒子例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.原子例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.原子例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.分子例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.微观粒子例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14.神奇的复分解反应（三）（实验）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.碳酸钙例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.氯化钠例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13.神奇的复分解反应（一）（实验）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.碳酸钠例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.碳酸氢钠.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.碳酸氢钠例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.碳酸氢钠例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14.洗涤玻璃仪器.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.液体药品的取用例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16.洗涤玻璃仪器例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.液体药品的取用例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12.检查装置的气密性例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.固体药品的取用例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.化学实验室例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.化学实验室.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15.洗涤玻璃仪器例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.酒精灯的使用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.实验室制备气体的一般思路和方法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.收集二氧化碳并验满的方法例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.实验室制取二氧化碳例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.实验室制取二氧化碳.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.收集二氧化碳并验满的方法例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.实验室制取二氧化碳例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13.合金.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.生铁和钢例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.生铁和钢.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14.合金例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.铝的应用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.金属之最例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.金属之最例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.铝的应用例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.自来水厂的水净化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.硬水和软水例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.硬水和软水例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.蒸馏例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.蒸馏例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.蒸馏.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.硬水和软水.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.酸碱中和.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.酸碱中和的应用例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.pH值例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4.酸碱中和的应用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.pH值例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3.酸碱中和例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2.溶质和溶剂例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7.溶解时的吸放热例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5.溶解时的吸放热.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1.溶质和溶剂.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9.乳化例1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.乳浊液和悬浊液.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 视频
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 6.物理性质和化学性质.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8.物理性质和化学性质例2.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11 单元音_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13 摩擦音_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09 单元音[]_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02 爆破音_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18 双辅音_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10 单元音_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14 摩擦音_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05 鼻音[]_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21 双元音[ε]_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06 单元音[][]_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15 摩擦音[θ][]_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04 爆破音_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17 双辅音_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03 爆破音_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07 单元音[][]_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19 双辅音_1080p.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 视频
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 视频
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 21 三年级几何
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 19 三年级应用题(2)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 22 三年级计数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 15 三年级组合数学
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 16 三年级计算
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 17 三年级数字谜
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 18 三年级应用题(1)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 20 三年级应用题(3)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 10 二年级数字谜
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 14 二年级计数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 9 二年级计算
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 13 二年级几何
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 11 二年级应用题(1)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 12 二年级应用题(2)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 8 二年级组合数学
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 46 六年级计算
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 52 六年级计数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 47 六年级数论
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 45 六年级组合数学
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 51 六年级几何
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 50 六年级应用题(2)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 49 六年级应用题(1)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 48 六年级数字谜
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 3 一年级计算
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 5 一年级应用题
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 2 一年级组合数学(2)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 4 一年级数字谜
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 7 一年级计数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 6 一年级几何
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 1 一年级组合数学(1)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 27 四年级应用题(2)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 25 四年级数字谜
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 30 四年级计数
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 23 四年级组合数学
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 26 四年级应用题(1)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 29 四年级几何
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 28 四年级应用题(3)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 24 四年级计算
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 36 五年级应用题(1)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 33 五年级数论(1)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 44 五年级计数(2)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 43 五年级计数(1)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 39 五年级应用题(4)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 35 五年级数字谜
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 42 五年级几何(2)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 32 五年级计算(2)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 40 五年级应用题(5)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 34 五年级数论(2)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 38 五年级应用题(3)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 41 五年级几何(1)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 31 五年级计算(1)
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 37 五年级应用题(2)
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01.中国发展成就.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03.地理差异显著.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02.长江的开发与治理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01.地形类型多样,山区面积广大.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05.四大地理区域.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04.欧洲西部发达的畜牧业.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05.撒哈拉以南非洲黑种人的故乡.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02.世界是石油宝库.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 08.“坐在矿车上的国家”.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06.世界活化石博物馆.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01.优越的地理位置.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03.人口东多西少.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02.海陆兼备的大国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04.巴西大量混血种人的社会.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09.极地地区的环境保护.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06.巴西热带雨林的开发和保护.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03.世界最发达的工业国家.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07.独特的自然环境.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05.巴西发展中的工农业.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01.美国民族大熔炉.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 08.科学考察的宝地.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02.美国农业地区专业化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01.草原和荒漠.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02.牧区和灌溉农业区.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04.三江源地区的保护.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01.青藏地区的自然环境.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02.高寒牧区和河谷农业区.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05.新疆.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01.地球的形状和大小.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15.卫星、彗星、小行星.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07.地球公转产生的现象.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.区时的换算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05.地球的自转特征.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17.宇宙的结构层次.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16.星座.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13.月相.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02.纬线和纬度.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09.太阳.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06.地球自转的意义.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.月球.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15.俄罗斯横跨亚欧大陆北部.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18.欧洲的地理特征.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09.东南亚“十字路口”的位置.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 08.日本东西方兼容的文化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05.一衣带水、多山地丘陵的岛国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04.亚洲复杂多样的气候.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03.地势与河流.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07.日本与世界联系密切的日本.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16.俄罗斯自然资源与工业.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.东南亚山河相间与城市分布.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17.俄罗斯交通与城市.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01.雄踞东方的大洲.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.东南亚热带气候与农业生产.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 37-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 31-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 08-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 36-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 35-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 33-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 22-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 34-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 32-.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01.气候湿热的红土地.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05.水乡文化特色与旅游.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09.港澳与祖国内地的密切联系.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.不可分割的神圣领土.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06.长株潭城市群的发展差异.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02.重要的旱作农业区.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10.北京-政治文化中心.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09.水土保持.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12.现代化的大都市.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06.文明的摇篮.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07.风吹来的黄土.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03.山环水绕 沃野千里.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.历史悠久的古城.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01. 细菌和真菌的分布.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21. 生物多样性面临的威胁及其原因.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11. 细菌、真菌与食品的保存.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05.多细胞真菌中的霉菌.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07. 细菌和真菌作为分解者参与物质循环.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15. 植物的分类.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09. 细菌和真菌与动植物共生.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10. 细菌、真菌与食品的制作.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18.生物分类的演变及命名.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06. 多细胞真菌中的大型真菌.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17. 从种到界.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16. 动物的分类.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20.基因的多样性和生态系统的多样性.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 22. 保护生物多样性的主要措施.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03. 细菌的营养方式和生殖方式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30. 我国植被面临的主要问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 22. 光合作用的原料.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21. 有机物的作用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27.呼吸作用与农业生产.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13. 花的结构.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17.叶片的结构.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01. 藻类植物.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11. 芽的发育.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29. 我国主要的植被类型.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28. 生物圈中的碳—氧平衡.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03. 蕨类植物.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06.被子植物的分布和作用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12. 植株的生长需要哪些营养物质.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10. 幼根的生长.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24. 光合作用与农业生产.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15. 植物的受精.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18. 植物的蒸腾作用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19. 绿色植物与水循环.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14. 传粉.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25. 植物呼吸作用的过程.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20. 绿叶如何制造有机物.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23. 光合作用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16. 植物对水分的吸收和运输.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 36.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 32.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 42.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 37.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 22.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 34.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 43.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 35.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 09.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 02.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 33.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07. 生物对环境的适应和影响.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05. 温度和水对生物的影响.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 04. 光对生物的影响.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26.单细胞生物的结构和生活.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16. 植物细胞的基本结构.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10. 生态系统的特点.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17. 动物细胞的基本结构.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12. 多种多样的生态系统.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18. 细胞的生活需要物质和能量.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25. 植物的组织.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 22. 人体的器官.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21. 细胞的分化与组织.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13. 生物圈是一个统一的整体.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01. 生物的特征.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 08. 生态系统的组成.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19. 细胞核.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 unit7-12
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 unit1-6
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 unit6-10
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 unit1-5
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 3. 时态和语态
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 2. 数词、冠词、介词和形容词
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 1. 名词和代词
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 5. 动词
https://cdn.ldstatic.com/images/emoji/twemoji/file_folder.png?v=15 4. 句子
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20. 社会行为.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 07. 节肢动物里的其他种类.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17. 骨、关节和肌肉的协调配合.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23. 动物在植物界、生物防治及仿生学中的作用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 22. 动物在生态系统中的作用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 06. 节肢动物里的昆虫类.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16. 运动系统的组成.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 01. 腔肠动物.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 05. 软体动物.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14. 哺乳动物的种类及与人类的关系.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 03. 线形动物.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19. 学习行为.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 08. 鱼的种类及与人类的关系.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13. 鸟的主要特征.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21. 群体中的信息交流.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15-6 判断伪币轻重.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15-9 两边砝码问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15-5 最不利原则二.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15-4 最不利原则一.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15-2 数独游戏.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15-3 抽屉原理(1).mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 15-7 找伪币问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19-8 报数问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19-2 有暗差的差倍问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19-18 基本盈亏问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19-10 蜗牛爬井问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19-7 公共周期.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19-16 分配中的比较.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19-4 几倍的几倍多(少)几.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19-19 基本亏亏问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 19-15 腿倍头差.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21-12 利用旋转对称分割.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21-7 多边形内角和.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21-5 认识特殊角.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21-2 平移法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21-10 先计算再分割.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 21-13 先分割再拼合.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 22-7 按位数分类.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20-17 空心方阵.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20-19 三角形阵列.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20-13 利用平均数转化条件.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20-12 盈亏问题中的倍数关系.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20-10 条件转化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20-15 多个对象的还原问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20-9 特殊对象.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20-11 复杂盈亏中的比较.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 20-2 隐藏差.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-18 头倍腿和.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-13 和倍问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-8 直线上两端不植树问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-12 环形排列问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-4 等量代换.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-3 移多补少求开始.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-2 移多补少求变化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-17 头和腿和.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-16 倍比法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-7 直线上两端植树问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-14 和差问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-11 复杂爬楼梯问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 18-1 移多补少求结果.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-7 求公差与某一项.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-6 提取公因数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-14 利用倍数构造公因数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-8 求项数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-12 中间数的应用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-16 数表中找位置.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-10 利用中间数求和.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-9 配对求和.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-4 乘除法添括号.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-15 利用相近数构造公因数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 16-13 多个乘法的提取公因数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17-2 加括号改正算式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17-4 填算符求最值.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17-9 首位分析.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17-8 末位分析.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17-7 重数分析.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 17-6 数阵图中的公共和.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13-3 旋转.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13-6 周长的计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13-8 立体图形的特性.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13-11 染色问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13-2 平移.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13-7 三角形的三边关系.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13-9 正方体的相对面.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13-1 多角度观察立体图形.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 13-10 正方体的翻滚.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-2 图形旋转规律.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-15 二阶数列.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-14 兔子数列.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-13 等差和等比数列.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-7 看错加数的数字.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-17 添括号.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-10 等式性质1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-9 看错减数的数字.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-8 看错被减数的数字.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-6 凑成整十整百巧算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-19 带符号搬家.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 9-5 加减法王国中的凑整法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14-6 统计表（下）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14-14 数三角形.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14-15 分给3个相同对象.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14-1 分3个不同物体（上）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14-13 数正方形（下）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14-11 数长方形.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14-3 数点.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 14-2 分3个不同物体（下）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10-6 黄金三角.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10-8 黄金倒三角.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10-4 加法竖式谜.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10-10 巧填加减乘除.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10-1 填数游戏.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 10-2 图形竖式谜1.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12-2 比较求年龄差.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12-7 周期问题-求和.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12-15 哪种优惠更划算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12-13 根据倍数画线段图(下).mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12-12 根据倍数画线段图(上)(1).mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12-10 有头周期-求个数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12-4 倒推法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 12-8 周期问题-求个数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-17 一笔画与奇偶点.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-6 画图推理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-5 奇偶分析的捣蛋鬼大法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-3 奇偶性的应用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-4 奇偶分析的袜子大法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-9 列表推理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-2 过河问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-10 共用火柴棒.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-1 空瓶子换饮料.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-15 扫雷游戏.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 8-19 实物图转化为点线图.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11-10 已知排队总数-无重叠.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11-15 根据天平求重量.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11-1 移多补少（上）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11-3 移动凑倍-整倍.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11-8 求排队总数-无重叠.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 11-13 等量代换（上）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 46-2 整体约分.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 46-12 分数数表.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 46-8 凑整法进阶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 46-3 连分数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 46-5 定义新运算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-7 对应到数字构造的计数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-15 古典概型和概率计算公式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-13 方块图的计数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-16 概率计算公式的具体应用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-19 比赛进程之标数法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-17 概率的独立性和分步计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-14 概率的相关基本概念.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-1 上楼梯问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-22 对称、旋转的染色问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-2 传球法基本问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-21 图形分平面.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 52-9 不可为空的插板问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51-8 等底三角形的面积转化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51-10 缺角的等边三角形.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51-3 多边形的内角和外角.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51-15 旋转体问题进阶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51-9 一半模型.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51-7 设而不求巧算面积.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51-13 缺角的矩形.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51-5 共边长方形.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51-11 滚圆问题进阶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 51-12 构造沙漏.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-10 带取整类符号的方程.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-12 数字谜法解决整除问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-2 N进位制与十进制互化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-20 有特殊要求的反求(上).mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-3 非十进制之间的互化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-4 N进位制下的四则运算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-19 简单的因数个数反求.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-8 分数及分数数列问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-17 分解质因数的其他应用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-16 乘积尾0的个数进阶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-22 求余综合提高.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-7 取整符号的认识.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 47-13 分解判别法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 45-3 总分分拆.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 45-8 算式最值问题提高.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 45-10 蚂蚁回家.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 45-11 数列数表构造进阶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 45-4 小团体分析法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 45-5 积分分拆与胜负图.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 45-7 焊接小能手.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 45-6 比赛比分与进失球.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 49-11 生活中的大难题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 49-3 三元一次方程组及应用题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 49-7 归纳法找规律.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 49-6 遗产分配问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 49-1 二元一次不定方程及应用题（上）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 49-15 扶梯问题（上）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 49-2 二元一次不定方程及应用题（下）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 49-10 复杂的方程(组)解应用题 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3-8 加法竖式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3-4 简单的图形规律.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3-9 减法竖式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3-1 加与减.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3-5 图形位置变化规律.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3-13 凑整法-不同王国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 3-14 分组法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 50-13 中途变速的行程问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 50-11 十字交叉法进阶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 50-6 间隔休息.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 50-12 分阶段销售商品.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 50-8 提前接送.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 50-2 空中加油问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 50-1 最佳会合点问题 .mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 50-9 纳税问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 50-7 “不变量”进阶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2-5 轴对称图形.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2-9 分割七巧板.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2-11 人民币的计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2-1 钟面数学进阶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2-7 2人照镜子的距离计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 2-2 钟面上的计算（上）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4-3 加减法王国.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4-7 比较大小（上）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4-8 比较大小（下）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4-5 凑数法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4-2 图文算式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 4-4 凑零法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-1 一对一比较.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-15 基本应用题（中）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-12 用直尺测量.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-2 一对多比较.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-10 开始差几个.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-18 求重叠长度.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-4 比轻重.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-13 长度单位换算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-8 给后差几个.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-9 给几个.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-6 克、千克和吨.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-11 多行之间的移动.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-7 斤和公斤.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 5-3 比长短.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7-4 补全大正方体.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 7-6 分给两个不同对象.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25-14 横式问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25-3 字母减法中的重复数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25-4 有字母的乘法竖式谜.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25-10 幻方与幻和.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25-15 复杂数阵图.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25-12 三阶幻方的性质（1）.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25-8 竖式谜中的倍数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25-5 字母乘法中的重复数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 25-1 字母加法中的首末分析.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27-14 速度倍数相关的行程问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27-5 火车过桥问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27-12 火车行程中的对比解题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27-11 火车与行人进阶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27-8 两个过程的简单火车问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27-6 火车与行人.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27-3 用变倍解决的年龄问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 27-9 火车与火车进阶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1-9 哪杯水多.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1-13 加减火柴棒.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1-1 需要换位思考的位置关系.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1-7 认识奇与偶.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1-12 水位变低.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1-14 移动火柴棒.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1-2 分类.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1-5 钟面数学初步.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 1-11 水位变高.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-18 数字构造抽屉.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-17 染色问题构造抽屉.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-16 枚举法构造抽屉.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-6 利用对称性解决策略问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-7 假设推理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-13 计算中的奇偶性.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-5 下棋问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-19 几何中的构造抽屉.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-15 利用奇偶性分析论证.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-1 合理安排顺序.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-9 列表推理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-10 最大数与最小数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 23-8 矛盾推理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26-2 倍数分组.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26-15 差不变的变倍问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26-5 简单的计划有变行程问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26-8 相距相遇问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26-12 行程中的对比解题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26-4 行程问题基本公式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26-13 设多份.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26-3 认识速度.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 26-7 不同时出发的相遇问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29-14 勾股定理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29-13 狗牙模型应用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29-10 三角形格点求面积.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29-3 三角形面积计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29-7 狗牙模型.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29-2 平行四边形面积计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29-12 割补法巧算面积.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29-8 蝴蝶模型.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 29-1 正方形、长方形面积计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-12 利用排除进行挑选.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-9 组合数的性质及应用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-10 排列组合辨析及应用.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-6 有特殊要求的乘法原理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-5 相邻不同色问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-2 分类与分步.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-4 简单染色问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-13 数字计数中的排列组合.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-3 标数法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-14 数字计数中的分类计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 30-1 乘法原理.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24-16 小数点的移动.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24-21 整数裂项.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24-9 定义新运算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24-5 数组规律.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24-11 多位数乘法凑整.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24-18 小数乘除法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24-13 简单数表规律.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24-2 提取公因数.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24-8 平方差公式.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 24-15 数表中的和.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-3 平均数与总数的变化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-10 相同点出发的往返追及.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-15 求原有草量和草的变化.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-1 平均数基本运算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-8 不同出发点的往返追及.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-14 草场上的牛.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-5 分段计算的行程问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-7 不同出发点的往返相遇.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-4 移多补少求平均.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-12 多次往返中次数的计算.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 28-13 二次相遇问题.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 33-4 弃9法和乱切法.mp4
https://cdn.ldstatic.com/images/emoji/twemoji/page_facing_up.png?v=15 36-5 知时间求时间的设路程.mp4
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**** Hidden Message ***** 正能量传播：在长期主义者的眼中，生活简单纯粹，没有雄心壮志的目标，有的只是日益传播正能量：精进的每一件小事，如同节奏稳建的匀速慢跑。 看完发现，很多机会其实需要主动挖掘。 星友们，这一期线下扶持计划，啥时候开始招募呢？？？群里找谁啊？？ 正能量到处传播~人生没有彩排，每天都是现场直播，所以不要总是想着"如果"，因为没有"如果" 不是，哥们？ 日常活跃~网感的本质就是对客户心理的了解程度，是有对内容好坏（抛开数据，单纯的内容）的评判标准。
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