Paragraph 2______A. Are clinical trials safe?B. W

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Paragraph 2______

A. Are clinical trials safe?

B. What are clinical trials?

C. What should people know before participating in a clinical trial?

D. Who should consider clinical trials and why?

E. Where are clinical trials conducted?

F. Why are clinical trials done?

热搜:关于氨基酸代谢错误的论述是_________。

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  • 答案:D

    第二段主要讲什么人为什么参加临床试验,比方说,要观察不同人群的不同疗效,有的人已没有别的方法治疗,也有的人要为医疗事业作贡献等。