题目内容

需要区分变量在时间上的先后差别,研究不同时间点上的变量之间的相互关系和转换过程,这是()。

A. 静态分析
B. 比较静态分析
C. 动态分析
D. 边际分析

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Lucy, ____ the door or someone’ll come in.

A. close
B. closes
C. not close
D. is closing

Go and _______ the TV quickly. The volleyball match will begin right away.

A. turn off
B. turn down
C. turn up
D. turn on

Mother said him, “Don’t _______ on football.”

A. spend too much time
B. to spend too much time
C. spend too many time
D. to spend too many time

__________ to meet me at the station. I’ll be waiting there.

A. Not to forget
B. Not forget
C. Forget not
Don’t forget

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