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英语
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Professor Li said that light _____ faster than sound .
A.travel B.travelled C.travels D.travelling 选择哪个呢?为什么?
人气:319 ℃ 时间:2020-01-29 06:22:11
解答
C.travels
虽然前面是said,过去式,但是从句的内容“光速比声速快”是一个真理,这种表示真理的从句,无论主句的时态是什么,从句都用一般现在时
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英语翻译
The old man said that light______faster than sound.A.went B.will go C.travels D.will travel
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(x-2)^-1=x-2分之1的成立条件是
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