正确答案: A

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题目：42________

解析：A

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举一反三的答案和解析：

[单选题]．FDA can ask for the proof of safety and effectiveness of a product ________.

if it is a drug

[单选题]石竹科的太子参与王不留行是两种药用植物，其药用部分( )。

分别为块根、种子

[单选题]Which of the following is the correct order to describe Fitzgerald’s life according to the passage?a. He became addicted to drinking.

b-f-c-d-e-a

[单选题]似亲孢子是指在形态上与母细胞相同的游动孢子。( )

错误

[单选题]请阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该选项的标号涂黑。A

Untidy.

[单选题]

followed

[单选题]Part of the reason Charles Dickens loved his own novel, David Copperfield, was__ it was rather closely modeled on his own life.

that