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The dinosaurs probably became extinct after a giant asteroid hit the Earth about
The dinosaurs probably became extinct after a giant asteroid hit the Earth about
游客
2023-10-18
36
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问题
The dinosaurs probably became extinct after a giant asteroid hit the Earth about 65 million years ago. But what______if this asteroid______?
选项
A、would have happened: had missed
B、would happen: missed
C、happened: would miss
D、was happening: missed
答案
A
解析
句意:六亿五千万年前,恐龙很可能是在一颗行星撞击地球之后灭绝的。但如果行星没有撞击地球,情况又会是什么样呢?考查虚拟语气,表示与过去事实相反主句用would have done,从句用过去完成时表示。
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