Match 8th is _____.[ ]
A. Teachers' Day
B. Women's Day
C. Christmas Day
答案：B
构成胎盘胎儿部分是（）
A.底蜕膜
B.包蜕膜
C.真蜕膜
D.叶状绒毛膜
E.滑泽绒毛膜
