Scientists _______ a lot of experiments ...

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

B 【解析】本题考查动词短语辨析。carry on表示“进行、继续”；carry out表示“执行、贯彻”； carry off表示“夺得”某种奖赏。

考点分析：

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