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 Mr. Huang will ________ in the movement.
A. play a leading part B. take parts
C. play leading part D. take a part
2. We discussed where to go for a whole morning, but we decided to stay at home_____.
A. at the end B. by the end C. in the end D. on end
3. _____ of the students who took part in the military training is 450.
A. A number B. A lot C. Lots D. The number
4. Sometimes ________ English is quite different from _______ English in many ways.
A. speaking, writing B. spoken, written
C. speaking, written D. spoken, writing
5. Can you tell me if you have found the key ________ your car.
A. for B. to C. about D. by
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