股四头肌叙述错误的是()
A.为大腿前群肌
B.有四个肌头形成一腱
C.作用屈髋屈膝
D.作用屈髋伸膝
E.受股神经支配
参考答案:C
____________ English teacher is funny. We all like him very much. [ ]
A. We
B. Us
C. Our
D. Ours
引起泌尿系结石形成的因素有()
A.细菌感染
B.尿流梗阻
C.异物
D.饮水不足
E.长期坐位工作