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 number of words used in a language varies considerably.各种语言所使用的词语数量也有很大的区别。
In English, there are as many as almost 2,000,000 words which can be used.英语大约有两百万个不同的单词。
Only about 60,000 are used daily and in fact 10,000 words are enough to communicate well in English.日常用语中有6万个单词,但实际上只要有一万个单词就可以很好地用英语交流。
One of the difficulties with language is that it is rarely static.语言的难点之一,就是它不是不变的。