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更新 2022-09-03
科目英语
题型单选题
难度中等
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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

Walking and running are the oldest and newest, excellent _________ exercise for all ages and fitness levels.

A．bodies shaping

B．body shaping

C．bodies shaped

D．body’s shape

题型：未知
难度：未知

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—Do you think we can get there on time?
—Yes，_______ the truck doesn’t break down. 　

A．even if 　

B．unless

C．until 　

D．so long as

题型：未知
难度：未知

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The children were playing games on the playground, ________ school uniforms.

A．all of them wore	B．all wearing
C．all of whom wearing	D．all were wearing

题型：未知
难度：未知

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It is written clearly in the requirements that all passengers ______ check onto board 30 minutes before the plane takes off.

A．may

B．can

C．will

D．shall

题型：未知
难度：未知

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—I failed again. I wish I _________ harder.
—But you _________.

A．had worked; hadn’t	B．worked; don’t
C．had worked; didn’t	D．worked; didn’t

题型：未知
难度：未知

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