問題詳情
37. Animals that lack a vertebral column are known as________.
(A)invertebrates
(B) inarticulates
(C) supinates
(D)aspinates
(E)retrogrades
參考答案
答案：A
難度：計算中-1
書單：沒有書單，新增
用户評論
【pocky】評論
定義：Invertebrate, any animal that lacks a vertebral column, or backbone, in contrast to the cartilaginous or bony vertebrates.