問題詳情

【題組】49. What is the main reason why birds fly south?
(A) To find more food.
(B) To find better trees to nest in.
(C) To be friends with the whales.
(D) To find a cooler place to live.

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)