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6.show vt. --bring to be seen
He showed his ticket at the door.
Show sb. around
7.first of all -- in the first place
First of all, let me say that how glad I am to be here.
8.once conj. --from the moment that一旦…就…
Once allowed, the students will do the experiments themselves.
9.follow vt. -- come or go after / understand
P.E. will be followed by computer studies.
He spoke so fast that I couldn’t follow him.
Following adj. 接着的
10.make / do / carry out an experiment 做实验
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