大学英语大学英语大学英语六级(CET6)2011年12月大学英语六级真题
题目内容

Why did the so-called bad mice have to be captured and destroyed、

2024-07-09

A.They may affect the results of experiments.

B.They may behave abnormally.

C.They may breed out of control.

D.They may cause damage to the environment.

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