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We have twice PE classes a week.
After I visited England, I left for Paris.
Learning Latin in school, I could read the inscriptions I saw in Rome.
Both girls, having talked excitedly, did not see the car drawing near.
I am very happy to finish my homework early.
When the president had entered, everyone rose.
Studying hard, I was ready for the exam.
Before Professor John gave a test, he gives an excellent review.
When you finish them, your paper should be folded and handed in.
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