膝关节伸展运动范围正常是（）。
A.0°～90°
B.0°～125°
C.0°～135°
D.0°～150°
E.0°
参考答案：E
Because of the bad weather, we have to _________ the meeting till next week.
A．take off
B．get off
C．put off
D．set off
赫特纳
