什么是代表产品？
参考答案：
代表产品是指产品结构或工艺上具有代表性，且产量与劳动乘积最大的产品。
Although I am not good enough at my subjects, I want to be ______ university student in the future.
A．/
B．an
C．the
D．a
— Didn't you have a good time at the party?
— Of course I did. As a matter of fact, I had such fun that time seemed to _____ so quickly. [ ]
A. go by
B. go away
C. go out
D. go over
