問題詳情

40. Which of the following is NOT mentioned as a reason why birds are able to fly?
(A) Their bones are hollow.
(B) They have hard beaks instead of jaws.
(C) They have flat breastbones.
(D) Their feathers are light.

參考答案

答案:C
難度:簡單0.75
統計:A(0),B(10),C(33),D(0),E(0)

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