对不稳定的股骨颈骨折治疗是（）
A.手法复位，外固定
B.手法复位，内外固定
C.手法复位，内固定
D.牵引治疗
E.以上都不对
参考答案：B
He _____and his friends took her to hospital just now.[ ]
A. felt excited
B. became interested
C. became happy
D. felt sick
内听道扩大为两侧内耳道宽径相差超过（）
A.2mm
B.5mm
C.7mm
D.4mm
E.6mm
