重型肝炎和肝硬化时腹水产生原因，下列哪项是不正确的【 】
A．肝细胞合成白蛋白减少
B．淋巴液回流障碍
C．醛固酮增高
D．低钠
E．门脉高压
参考答案：D
---May I go and play with Tom this afternoon, mum?
---No．You can’t go out ______ your homework is being done．
A．until
B．after
C．before
D．as
山地
