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The death number has reached as much as 10,000.
I have never left him for such a long time.
You can’t imagine how tired I had.
I made many new friends in this week.
It was them that help me make progress.
It was so cold place that we felt like blocks of ice.
I told my mum this thing in the evening.
He is a great man who devoted his whole life to fight for the freedom.
I don’t know how can I do.
No matter what he feel,I will never give in.
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