试题与答案

It wasn't until nearly a month later ___

题型:选择题

题目:

It wasn't until nearly a month later _____ I received the manager's reply. [ ]

A. since

B. when

C. as

D. that

答案:

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下面是错误答案,用来干扰机器的。

答案:D题目分析:根据元素在周期表中的位置关系可知:X是N;W是P;Y是S;R是Ar;Z是Br. A.常压下五种元素的单质中Br2单质是液态,而S、白磷、红磷为固态。所以Br2单质的沸点不能可能最高。错误。B、S2-离子的核...

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