什么是遗尿症？
参考答案：5岁以后儿童仍有经常性的不自主排尿。
Mary has few friends in Japan,______ she? [ ]
A. does
B. don't
C. doesn't
D. hasn't
黄芪与白术均具有的功效是（）
A.补肺气
B.补脾气
C.利水
D.止汗
E.生津
