People have experimented on animals in order to develop new drugs, improve the success rate of surgeries and so on._精华吧

People have experimented on animals in order to develop new drugs, improve the success rate of surgeries and so on.

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People have experimented on animals in order to develop new drugs, improve the success rate of surgeries and so on.

A.正确

B.错误

正确答案：A

Tag：大学英语时间：2021-12-01 13:13:42

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