問題詳情
5. The company appears to be unable to _____ their claims as to the effectiveness of theherbal medicine. I think it should be taken off the shelves.
(A) substantiate
(B) allege
(C) insulate
(D) fluctuate
參考答案
答案：A
難度：適中0.523077
統計：A(34),B(14),C(2),D(6),E(0)
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