32.下列何者在胚胎早期發育中最晚出現?
(A)羊膜(amnion)
(B)卵黃囊(yolk sac)
(C)初級絨毛(primary chorionic villus)
(D)原條(primitive streak)
答案:登入後查看
統計: A(65), B(34), C(87), D(410), E(0) #1634718
統計: A(65), B(34), C(87), D(410), E(0) #1634718
