問題詳情
【題組】9. Why did Gaylord Nelson start Earth Day ?
(A) Because there were too many fish.
(B) Because he was sick.
(C) Because there were too many people.
(D) Because dirty air and water make the fish sick.
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)