問題詳情

【題組】48. Which of the following threats to coral reefs may be less directly caused by human beings?
(A) blast fishing
(B) fishing with cyanide
(C) water pollution
(D) the warming of the oceans

參考答案

答案：D
難度：適中0.45
統計：A(3),B(4),C(4),D(9),E(0)