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____ you be able to travel at the speed of light,you would n

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____ you be able to travel at the speed of light,you would not reach that star in more than a thousand years.
A.Might B.Could C.Should D.Would
Why Meaning?
【选择C】
虚拟语气:省略 if
如果条件状语从句的谓语动词中含有were,had,should,可以省略连词if,把were,had,should,放在主语前构成倒装.如果条件状语从句是否定形式,倒装时只能把not放在主语的后面,不能用缩写形式而把not一起放到主语之前.
Should there be a flood,what should we do?
万一发生了水灾,我们该怎么办呢?
Were it not for their assistance,we would be in serious difficulty.
要是没有他们的帮助,我们会陷入困境.
Had you arrived at the station ten minutes earlier,you could have caught the train.
如果你早十分钟到达车站的话,你早就赶上火车了.