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
When he hurried to the railway station,tired and ________,Mike found the train had just left.[ ]
A．out of sight
B．out of reach
C．out of place
D．out of breath
参与氨基酸脱羧基作用
A．维生素及B．维生素B12C．维生素B12D．四氢叶酸E．生物素
