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更新 2022-09-03
科目英语
题型单选题
难度较易
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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

He is a man of __________ ideas and he often makes a careful plan __________.

A．advanced; before advance	B．advanced; in advance of
C．advanced; in advance	D．advancing; in advance of

题型：未知
难度：未知

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—I sent him a most interesting storybook by mail this morning.
—You __________ so; he's coming tomorrow morning.

A．needn't do	B．needn't have done
C．didn't need to do	D．didn't need to

题型：未知
难度：未知

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I was not __________ her presence till she spoke to me.

A．aware	B．aware about
C．aware of	D．aware to

题型：未知
难度：未知

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People all over the country felt shocked __________ they heard of the news __________ eight children were killed at the school gate.

A．the moment; that	B．when; which
C．immediately; /	D．the second; what

题型：未知
难度：未知

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I must apologize for __________ ahead of time.

A．letting you not know	B．not letting you know
C．letting you know not	D．letting not you know

题型：未知
难度：未知

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