互动封闭仿真课堂
1、智能交互 2、电子板书式视频教学 3、在线互动问答 4、封闭课堂启发式教学方式
随堂测试、知识梳理、易错点揭示、总结启迪智能错题本
听课中的错题能自动加入错题本，课后可方便复习及导出错题本升级服务
在线答疑、课后同类题练习、讲义下载、短信提醒1. But don’t you think it would be better if you were a bit thinner?
2. So that is what they did.
3. Their balanced diets became such a success that before long Wang Peng became slimmer and Yong Hui put on more weight.
4. … but I found your menu so limited that I stopped worrying and started advertising ….
5. Wang Peng sat in his empty restaurant feeling very frustrated.
6. He thought of his mutton, beef and bacon cooked in the …..
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