阿摩線上測驗
5. Opponents warned that dams on the river could be _______ to the river’s ecosystem,permanently
harming the fisheries sustaining millions of people.
(A) beneficial
(B) detrimental
(C) impoverished
(D) imperative
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統計： A(3), B(16), C(3), D(0), E(0) #811556
統計： A(3), B(16), C(3), D(0), E(0) #811556
