2. 外语
  3. A. Why are clinical trials done? B. Where are clinical trials conducted? C. Who should consider clinical trials and why? D. W

A. Why are clinical trials done? B. Where are clinical trials conducted? C. Who should consider clinical trials and why? D. W

admin2012-09-29  93
问题 A. Why are clinical trials done?
B. Where are clinical trials conducted?
C. Who should consider clinical trials and why?
D. What should people know before participating in a clinical trial?
E. What are clinical trials?
F. Are clinical trials safe?

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选项
答案B
解析
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