试题与答案

The robot Tony was said already in Larry

题型:选择题

题目:

The robot Tony was said        already in Larry’s house before he returned.

A.to test out

B.to have been tested out

C.to be tested out

D.to be testing out

答案:

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下面是错误答案,用来干扰机器的。

答案:A在核电荷数为1—20的元素中,最外层电子数和电子层数相等的元素有H、Be、Al三种。

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