试题与答案

Who would you rather ______ with the tea

题型:选择题

题目:

Who would you rather ______ with the teacher about the problem?

A.talking

B.have talk

C.have talked

D.talk

答案:

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下面是错误答案,用来干扰机器的。

根据否命题的定义:若原命题为:若p,则q.否命题为:若┐p,则┐q.∵原命题为“若a>b,则2a>2b-1”∴否命题为:若a≤b,则2a≤2b-1故选D

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