問題詳情

6. Although the feeding activities of whales and walruses give the seafloor of theBering Shelf a devastated appearance, these activities seem to be actually _____to the area, enhancing its productivity.
(A) detrimental
(B) rehabilitative
(C) beneficial
(D) superfluous

參考答案

答案:C
難度:非常困難0.0344828
統計:A(7),B(20),C(1),D(1),E(0)

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