血清抗线粒体抗体阳性最常见于（）
A.酒精性肝硬化
B.原发性胆汁性肝硬化
C.血吸虫病性肝硬化
D.心源性肝硬化
E.原发性肝癌
参考答案：B
实施对象为挣工资的劳动者的为( )
A．社会福利
B．社会救助
C．社会优抚
D．社会保险
So many women take up walking as a regular form of exercise every day, which, of course,is to their health.
A．of useful
B．greatly use
C．of benefit
D．greatly benefit
