38.The term “vicious cycle” in lines 21-22 refers to the
(A) movement pattern of surge glaciers
(B) effect surge glaciers could have on the temperature of tropical areas
(C) effect that repeated rising sea levels might have on glacial ice
(D) constant threat surge glaciers could pose to the Gulf of Alaska

答案：登入後查看
統計： A(0), B(1), C(1), D(2), E(0) #802260