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两道英语单选题1.The driver could have survived but he ______ the se

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两道英语单选题
1.The driver could have survived but he ______ the seat belt.
A.had been wearing B.hadn’t worn
C.was wearing D.didn’t wear
说是对过去的推测;那为什么不能选择B,他不是过去的事件对现在造成了影响了么?
2.The sunspot came into its active stage,( ) that happens once every eleven years.
one ;为什么不是 the one?不是the sunspot么?
1.he didn't wear the seat belt 指的就是过去发生的事实情况,而hadn't worn是指在过去的一个动作之前还没有做某事,而这个题目当中并没有出现另一个过去的动作,前面仅仅是对过去情况的虚拟.
2.one针对上文的active stage而言
came into its active stage,an stage that happens once every eleven years.这里的one=an stage,在句子中作同位语,表示什么样的一个阶段