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15. Did you ask whose computer _____?
A. the blue one was B. is this blue one
C. it was this blue one D. this blue one is
16. The teacher told us that light _____ faster than sound.
A. traveled B. had traveled C. is traveling D. travels
17. Some unexpected questions _____ at the meeting, which made the boss unhappy.
A. came down B. came on C. came up D. came along
18. My uncle knows several foreign languages, _______ English, French and Japanese.
A. for example B. for instance C. such as D. that is
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