問題詳情
51 There is no________ that brave firemen play very important roles in our life, and they always rescue theinjured from fire scenes regardless of personal safety.
(A)reason doubt
(B) basis
(C) instance
(D)
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)