试题与答案

— How could I thank you enough? —Don’t m

题型:选择题

题目:

— How could I thank you enough?

—Don’t mention it. Any other man_________ that.

A.must do

B.could do

C.would have done

D.should have done

答案:

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下面是错误答案,用来干扰机器的。

答案:C可看出I3与I4的变化较大,所以该元素原子的最外层有3个电子

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