問題詳情
50. According to this article, what is the function of penguins' feathers?
(A) They can release bubbles underwater.
(B) They can decrease swimming speeds.
(C) They can allow oxygen to be restored.
(D) They can help find their mates.
參考答案
答案：99
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中