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Yearsagowedidn'tknowthis,butrecen
Yearsagowedidn'tknowthis,butrecen
发布时间:2020-08-03 12:16:24
Years ago we didn't know this, but recent science ________ that people who don't sleep well soon get ill.A.showedB.will showC.has shownD.is showing
网友回答
C解析解析:由于we didn't know this与“现代科技已经证明睡不好觉的人会生病”相互对比,所以this 即指后文的内容,用现在完成时表示对现在的影响.命题立意:本题考查时态.
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