下列哪项不属于胎儿附属物
A.羊水
B.胎膜
C.脐带
D.胎盘
E.胎脂
参考答案:E
Which of the following activities should a 2-year-old child to be able to do()
A. Build a tower of eight cubes.
B. Point out a picture.
C. Wash and dry his hands.
D. Remove a garment.
分析影响巴基斯坦棉花生产的有利区位条件。