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10. One dream is not always enough, especially for a person who loves and cares for his people,
11. … Yuan Longping considers himself a framer, ….
lead a … life with the hope of free from
insist on search for be satisfied with
get/feel/be exhausted in addition focus on
rid … of thanks to care about
as well as lead to build up
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