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He had the advantage of a good education.
What is the advantage of using this machine?
该词的反义词为disadvantage
eg. His lack of education was a disadvantage when he looked for a job.
Not studying will be to your disadvantage.
8. disagree vi: be unlike or have a different opinion
eg. Our answers to the problem disagreed.
We disagreed about everything.
We disagreed on which movie to see.
9. choice n: the act of choosing eg. We each had to make a choice.
I will go with him because I have no choice.
The shop has a wide choice of hats.
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