冷藏保存尿液最好不超过（）.
A.1h
B.3h
C.6h
D.12h
E.24h
参考答案：C
产褥期一般所需的时间是产后( )
A．3～5天 B．10天 C．14天 D．2～3周 E．6周
He will dress himself in two years.
A．can
B．could
C．be able to
D．able to
