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Placebos may be harmful because they may be u

2022-08-05 16:29:43 问答库阅读 169 次

问题详情

Placebos may be harmful, because they may be used by ______.
A. doctors
B. false doctors or deceivers
C. researchers
D. scientists请帮忙给出正确答案和分析，谢谢！

正确答案：B
答案：B 见第六段。