問題詳情
5. Opponents warned that dams on the river could be _______ to the river’s ecosystem,permanentlyharming the fisheries sustaining millions of people.
(A) beneficial
(B) detrimental
(C) impoverished
(D) imperative
參考答案
答案：B
難度：適中0.444444
統計：A(3),B(4),C(2),D(0),E(0)