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8. Mr Smith told us that he ______ Atlanta at least three times in the past two years.
A. had gone to B. has gone to C. had been to D. has been to
9. He pushed his way through the crowd, saying “ _______.”
A. Never mind B. With pleasure C. Go ahead D. Excuse me
10. The number of Chinese speakers in the world ________ with the development of China is much larger than ever before.
A. grows B. grown C. growing D. grow
11. David said that it was because of his strong interest in literature _______ he chose the course.
A. that B. what C. why D. how
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