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One big challenge with placebo responses is that they are _____: people given the same inert pill or potion may show wildly different reactions, and the effects vary widely according to each person's illness.
- A.capricious
- B.illusory
- C.unpredictable
- D.chimerical
- E.marginal
- F.ephemeral
A,C显示答案
以上解析由 考满分老师提供。
