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Folk music Jazz Classical music Orchestra Country music
attractive/attract/attraction advertisement/advertise passer-by/passers-by
perform/performance loosely/loosen
wild/wildlife protection reserve hunt/hunter loss
stomach apply suggest thick disappear
insect contain powerful drug carpet
affect attention bite (bit, bitten) effect zone
recently fierce lazy distant fur
respond destroy appreciate incident dust
unexpected inspect sweater rare secure
dinosaur
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