—______ to your head?
—A football bumped it.[ ]
A. What happened
B. What happen
答案:A
晕针的原因有()
A.饥饿
B.疼痛
C.恐惧
D.体位不良
E.过敏体质
正常心尖搏动范围直径为()cm
A.0.5~1.0
B.1.0~1.5
C.1.5~2.0
D.2.0~2.5
E.2.5~3.0