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( )26. It’s cold outside, you’d better not _____ out.
A. to go B. go C. going
( )27.I _____ ask my father to give up smoking. It’s bad for his lungs.
A. must B. need C. shouldn’t
( )28.-----_______ do you brush your teeth ?
----- Twice a day.
A .How much B. How often C. How long
( )29. -----What’s your hobby?
-----I _______ listen to music, but now I enjoy dancing.
A. am used to B. used to C. am used
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