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21. Here is international call for you.
A. a B. an C. the D. /
22.—Mum, I want to have some milk.
—There is none . What about orange juice?
A. have B. leaving C. left D. leaves
23. The houses in this village are built of stones and bricks.
A. most B. almost C. mostly D. nearly
24. Your advice will help me my English.
A. afford B. cure C. improve D. affect
25. She was very us for informing her of her son’s safe return.
A. grateful to B. grateful for C. grateful D. grateful with
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