阿摩線上測驗
32. Unlike eutherians, both monotremes and marsupials ________.
(A) lack nipples
(B) have some embryonic development outside the uterus
(C) lay eggs
(D) are found in Australia and Africa
答案：登入後查看
統計： A(0), B(1), C(0), D(0), E(0) #3308931
統計： A(0), B(1), C(0), D(0), E(0) #3308931
