以下哪一项不属于股骨头颈部的血运来源：（）。
A.旋股内动脉
B.旋股外动脉
C.旋股中动脉
D.股骨干滋养动脉
E.圆韧带动脉
参考答案：C
Thousands of young college students have ___ the job, because it provides a high salary, a long paid vocation every year and many other attractive benefits.
A．applied for
B．turned down
C．threw away
D．complained of
首植枯枝牡丹的是（）。
A、卞济之
B、卞元亨
C、卞仕震
D、施耐庵
