某班人数是45人,该班男女生人数的比可能是[ ]
A.3:4
B.4:3
C.3:2
D.5:2
答案:C
-Sit down, please.
-______. [ ]
A. Fine
B. Thank you
C. Thanks you
D. Yes
最常受损伤的腘绳肌是()
A.股二头肌短头
B.股二头肌长头
C.半膜肌
D.半腱肌
E.股直肌