下边哪个部位骨牵引的进针方向由外向内（）。
A.尺骨鹰嘴牵引
B.股骨髁上牵引
C.胫骨结节牵引
D.跟骨牵引
E.以上均不是
参考答案：D
下列生物属于地面上动物的是（ ）
A．河蚌
B．壁虎
C．鲨鱼
D．虾
I ______ yesterday. It was broken. [ ]
A. had my bike repair
B. had my bike repairs
C. had my bike repaired
D. has my bike repaired
