互动封闭仿真课堂1、智能交互 2、电子板书式视频教学 3、5分钟一次互动问答 4、封闭课堂
5. -Which do you prefer, beef _____ pork?
-I prefer pork _____beef.
A. or；to B. to; or
C. to；to D. or; or
6. He will have learnt English for eight years by the time he ____from the university next year.
A. will graduate B. will have graduated
C. graduates D. is to graduate
7. They now have a good government , _____by all the people.
A. having supported B. supporting
C. supported D. to be supported
8. It is said that the early European playing-cards---for entertainment and education.
A. were being designed B. have designed
C. have been designed D. were designed