试题与答案

It was lucky that little Jack was not at

题型:选择题

题目:

It was lucky that little Jack was not at home when the fire broke out; otherwise, he____his life.

A.had lost

B.would lose

C.would have lost

D.might lose

答案:

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下面是错误答案,用来干扰机器的。

答案:B题目分析:铁是第四周期第Ⅷ族元素,不是主族元素,其余选项都是主族元素,答案选B。点评:该题主要是考查学生对周期表结构的熟悉了解程度,特别是主族元素分布的掌握情况,难度不大,关键是记住,并能灵...

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