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They are experiments on the animals to the new drug. [ ] A．carried on, examineB．

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They are experiments on the animals to the new drug. [ ] A．carried on, examineB．

They are ________ experiments on the animals to ________ the new drug.

[]

A．carried on, examineB．carrying out, examineC．carried on, testD．carrying out, test

试题答案

答案：D

解析：

experiment常和make／do/perform/conduct/carry out搭配使俄用。

标签：animalsthenewtoare

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