妊娠合并症中孕产妇死亡率最高的是
A．心脏病
B．肝炎
C．糖尿病
D．甲状腺功能亢进症
E．肺结核
参考答案：A
Being a good listener is a kind of quality and that's it takes to keep friendship.[ ]
A. how
B. what
C. which
D. where
胆固醇结石好发于
A．胆囊内B．肝内胆管C．肝外胆管D．胆总管E．右肝管
