胆囊壁增厚是由于：()
A．腹水
B．低蛋白血症
C．右心衰竭
D．肝炎
E．急性胆囊炎
F．以上各项均是
参考答案：F
____ child is pleased, for____ of them has got his own share.
A．Each; each
B．Every; every
C．Every; each
D．Each; everyone
胎儿发育后期易发生（）
A．生长迟缓
B．受精卵死亡
C．致畸作用
D．母体毒性
E．母体死亡
