脑缺血超早期治疗的时间窗应不超过（）
A.2h
B.4h
C.6h
D.8h
E.10h
参考答案：C
肉桂的功效是（）。
A.补火助阳
B.散寒止痛
C.温肺化饮
D.温经通脉
E.引火归原
It is the ability to do the job _____ matters not where you come from or what you are. [ ]
A. one
B. that
C. what
D. how
