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the forces of a country; the air forces
the Royal Air Forces of Great Britain
6.Strong enough to kill with his hands, and yet he loved music and sang with a wonderful voice.
强壮得足以徒手杀戮, 然而他还酷爱音乐,并能用美秒的嗓音歌唱.
But/ and yet表示转折 He is old, and yet he he jogs every day.
Though he was strong enough to kill with his hands, he loves music and sang with a wonderful voice.
Unable to work out the problem, John turned to his teacher for help. (形容词短语作状语)
7.power: n. ability to control to control sb. or sth.
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