Yearsagowedidn’tknowthis,butre

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更新 2022-09-03
科目英语
题型单选题
难度中等
浏览 1191

挑错有奖

Years ago we didn’t know this, but recent science ______that people who don’t sleep well soon get ill.

A．showed

B．has shown

C．will show

D．is showing

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She studies ___ medicine before she turned ___ writer.

A．×; ×

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A．1, a

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They have their reasons for keeping their marriage___ secret for ___ moment.

A．the; a

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