問題詳情

39.In a study, men and women who were argumentative________either tryptophan supplements or aplacebo for 15 days.
(A) ate
(B). drank
(C). consumed
(D). took)

參考答案

答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)