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题目内容
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.
- Acapricious
- Billusory
- Cunpredictable
- Dchimerical
- Emarginal
- Fephemeral
A,C显示答案
以上解析由 考满分老师提供。