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. When we visited Zhangzhuang again ten years later, we found it changed so much that we could hardly ________ it.
A. remember B. think about C. believe D. recognize
7.The policeman warned the drive ________ so carelessly.
A. never to drive B. to never drive
C. to not drive D. doesn’t drive
8. The office ordered his soldiers ________.
A. to stand still B. to not stand still
C. not stand still D. stand still
9. They lived a hard life and were often made _______ for over ten hours a day.
A. work B. to work C. to working D. worked
10. Do you have any difficulty ________ ?
A. on listening B. to listening
C. for listening D. in listening
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