問題詳情
7. A recognized problem with material found on the internet is that often it is ____ with sourcesunlisted and the writers’ credentials unknown.
(A) unclaimed
(B) unfounded
(C) underpinned
(D) unabridged
(E) unsubstantiated
參考答案
答案：E
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)