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72、A c is a book that contains recipes for preparing food.
73、America didn't become (独立)until 1776.
74、What is his __________ (本族) language?
75、Let’s leave ______ (立即) after breakfast.
76、There are more than 375 million native speakers of English. That is, for more than 375 million people English is their mother t .
77、He was elected p the next year and became the most powerful public character
78、One li is e to half a kilometer. 79、The railway ________(信号) showed that the train could pass.
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