按照我国残疾分类法,残疾分为()。
A.两类
B.三类
C.四类
D.五类
E.六类
参考答案:D
It was a______ that he was born on his mother’s birthday.
A.fact
B.satisfaction
C.coincidence
D.experience
外源性凝血系统的起动因子()
A.Ⅺ因子
B.Ⅴ因子
C.Ⅲ因子
D.Ⅱ因子
E.Ⅻ因子