10里面有几个2?列式是[ ]
A.10 -2
B.10÷5
C.10÷2
答案:C
_____ endless tale of difference, Americans can still find many similarities between themselves.[ ]
A. In spite of
B. Because of
C. As for
D. In time of
关于短效口服避孕药对月经影响论述正确的是()
A.服药期间发生不规则少量出血均由漏服引起
B.若服药前半期出血,为孕激素量不足引起
C.若服药后半期出血,为雌激素量不足引起
D.若服药后半期出血,每晚增服避孕药1/2~1片至第22日停药。
E.若服药前半期出血,每晚增服炔雌醇0.005~0.015mg至流血停止