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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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挑错有奖

Scientists _______ a lot of experiments on animals, hoping to find and effective way to cure the patients who had AIDS.

A．carried on

B．carried out

C．carried away

D．carried off

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相关试题

— It was cloudy yesterday.
—_________ today.

A．So it is

B．So is it

C．Neither it is

D．Neither is it

题型：未知
难度：未知

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It is reported that the United States uses ________ energy as the whole of Europe.

A．as twice

B．twice much

C．twice much as

D．twice as much

题型：未知
难度：未知

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It was along the Mississippi River _________ Mark Twain spent much of his childhood.

A．how

B．which

C．that

D．where

题型：未知
难度：未知

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At the meeting place of the Yangtze River and the Jialing River __________, one of the ten largest cities in the world.

A．does Chongqing lies	B．Chongqing lies
C．does lie Chongqing	D．lies Chongqing

题型：未知
难度：未知

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Some insects __________ the color of their surroundings to protect themselves.

A．take in

B．take on

C．take over

D．take off

题型：未知
难度：未知

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