题目内容

I know I was to blame, but_____you needn’t have been so angry.

A. for the time being
B. at all times
C. in no time
D. at the same time

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_____

A. here
B. atmosphere
C. mere
D. were

_____

A. protested
B. liberated
C. excluded
D. missed

空调厂商之间“价格战”可以用来说明“囚徒困境”。()

当边际效用减少时,总效用一定是减少的。()

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