問題詳情

24. While it is hard to decide _____ vitamin supplements make users healthier, it is much easier to challenge the idea that more is better.
(A) since
(B) whereas
(C) although
(D) whether

參考答案

答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)