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20.Tod ____________(值得) the gold medal in the speech competition as he had made so many efforts that nobody could imagine.
用适当的介词或副词填空
1.It is a waste ________ money to buy that expensive coat.
2.They worked _______ crazy to get the plan done on time.
3.Mother insisted _______ her son learning how to play the piano, but he refused.
4.If parents often shout ________ their children, their children won’t tell them the truth.
5.A good idea rushed ______ my mind.
6.The key you lost has turned ______.
7.The children’s room was ______ a terrible mess.
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