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40. ________is important to learn English well. A. He B. She C. It D. That
41. The teacher often thinks________new ways to make the students study well.
A. of B. for C. with D. from
42. The boy could ride a bike_____of six.
A. at age B. in the age C. on age D. at the age
43. He was at______for only three months. A. the school B. school C. a school D. schools
44. ―___ do you exercise? ―Once a week.
A. How many B. How long C. How often D. How far
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