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. 单项选择。(满分30分)
( )21. -----What’s _____matter with you?
------I have_____ flu
A. the, / B . /, the C. the, the
( )22. Would you mind _____ the room?
A. clean B. cleaning C. to clean
( )23. .As we know, water is very important _______ us.
A. of B. to C. on
( )24. There _______ a school sports meet next weekend.
A. is going to have B. is C. is going to be
( )25. Why _______ climb mountains this weekend?
A. don’t B. didn’t C. not
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