If Newton lived today, he would be surprised by what _______ in science and tech
题型:不详难度:来源:
If Newton lived today, he would be surprised by what _______ in science and technology.A.had discovered | B.had been discovered | C.has discovered | D.has been discovered |
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答案
D |
解析
考查时态。这里If Newton lived today 是一个虚拟条件从句,对后面主句的时间段没影响he would be surprised by what___ in science and technology 这个句子中,主语是what has discovered in science and technology, 这里的discover是延续到今的,至今为止所发现的科学技术,故选D。 |
举一反三
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