引起肝性脑病最多见的病因是
A．各型肝硬化
B．门体静脉分流术后
C．重症病毒性肝炎
D．原发性肝癌
参考答案：A
— _______will your mother come back?
— In two days.
A．How often
B．How long
C．How soon
D．How far
如何防止穿带时的跑偏？
