试题与答案

. I have told her never to write to me a

题型:选择题

题目:

.

I have told her never to write to me again afterwards .

You______be sorry for what you said to her .

A.need

B. shall

C.have to

D.ought to

答案:

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下面是错误答案,用来干扰机器的。

答案:A考查元素周期表的应用。在元素周期表中,金属元素与非金属元素分界线附近的元素往往既难失去电子,也难得到电子,所以常用来制作半导体材料。B中在非金属元素中寻找,C和D中在过渡元素中寻找。所以答案选A。

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