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1. It is only 40 minutes from my home to the center of Beijing by________(地铁).
2. There is less air ___________(污染) in my hometown..
3. She has a hair clip as a __________ (纪念品)of her journey(旅行).
4. I arrived late and m_________ the train.
5. We didn’t go to bed u_______ we finished our homework last night.
6. Grandpa is sick and we must take him to h________.
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