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I look forward to hear from you soon.
I was used to watch TV every night.
The apple is too tall to reach it.
I am very happy today because all day happened a lot of interesting things.
I’ll protect it from destroying.
I should look after my sister, she is 4 years old.
When I saw it, I picked up it.
Without the second thought, I agreed it.
I like my classmates before.
I will always remember her, she is so kind-hearted.
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