尿后余沥不尽的病因是（）
A.肾精亏虚
B.肾阴亏虚
C.肾气不固
D.膀胱湿热
E.肾虚水泛
参考答案：C
—How come everything tastes bitter?
—Well, things ________ taste different to you when you are suffering a cold.
A．may
B．should
C．must
D．would
新氢的氢纯度≮（）%
