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更新 2022-09-03
科目英语
题型单选题
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Los Angeles Times reported that researchers may have found a way to ______ human life by changing certain genes, so that humans might expect to live twice as long.

A．extend	B．preserve
C．multiply	D．transform

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相关试题

If he ___________ my advice then, he would not be in trouble now.

A．should take	B．took
C．could take	D．had taken

题型：未知
难度：未知

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It doesn’t matter ___________ you turn right or left at the crossing — both roads lead to the park.

A．whether	B．how
C．if	D．when

题型：未知
难度：未知

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It was in the school __________ he had studied ___________ he began the important experiment.

A．that; where	B．in which; which
C．where; that	D．where; in which

题型：未知
难度：未知

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I felt somewhat sad and was about to leave _________ something happened which drew my attention.

A．unless	B．until
C．when	D．while

题型：未知
难度：未知

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— May I stop here?
— No, you ___________.

A．mustn’t	B．might not
C．needn’t	D．won’t

题型：未知
难度：未知

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