問題詳情
5. The laryngeal nerve is 450 cm long in giraffes because
(A) a giraffe's throat is located far away from its brain.
(B) this nerve connects to the spinal cord.
(C) the nerve is modified from an ancestor that did not have a long neck.
(D) this nerve is a vestigial organ.
參考答案
答案：99
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中