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6. A friend ______is a friend indeed.
A. in need B. on need C. at need D. of need
7. The streets in Shanghai are much _______ than before.
A. wide B. widely C. more widely D. wider
8. Things are getting _______.
A. bad and bad B. worse and worse C. worst and worst D. badly and badly
9. Who is ______ of the two boys?
A. careful B. the more careful C. much careful D. the most careful
10. The teacher often makes us ______ in class, and life here makes us _____.
A. laugh; happy B. to laugh; to happy
C. to laugh; happy D. laughing; happy
11. No hurry. There’s ____time left.
A. little B. few C. a little D. a few
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