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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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A．rejected

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The expert says that nowadays there are too many problems linked to poor diet and a ________of exercise.

A．limit

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_____ new cure for this disease that medical experts have recently developed proves to be ______ most effective, although it can not completely kill all the viruses.

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— What do you think of the novel written by the well-known writer?
— Sorry, no _________!

A．wonder

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–Can you speed it up a little? I’ll be late for my flight.
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A．Go a head

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