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45. You must ______ yourself and ______.
A. look for; keep healthy B. look after; stay healthier
C. look out; stay healthy D. look after; keep healthy
46. ―Kate, could you come to my party on Saturday evening? ―______.
A.Yes, I'd love to B.Sorry, I have to do my homework
C.I'm sorry I'm late D.A and B
47. We teach ______ English and they teach______ Chinese.
A. our friends; us B. our friends'; our C. our friend's; us D. our friends; our
48. The boy is ______ young ______ go to school.
A. too, to B. to, too C. so, to D. such, to
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