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 am proud of that I have a wonderful mother.
Mandela is a magic people.
I believe he didn’t do this thing.
Because of it was you who gave me a chance to speak here today.
I am very busy to prepare for the exam.
Nelson Mandela, who was born in South Africa.
One day evening he came to my home.
Now my dream was come true.
We sang many ways on our ways to the park.
He is a really friend
There is much more difficulties for me.
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