关节活动度测量被允许的误差为()
A．0°～2°
B．1°～3°
C．2°～4°
D．3°～5°
E．4°～6°
参考答案：D
---Who is the woman_______ orange over there?
--- Oh, she is my mother.
A．wear
B．with
C．in
D．on
既具免疫黏附作用又有调理作用的补体裂解片段是
A．C2b
B．C3b
C．C4b
D．C5b
E．C567
