股骨颈囊内骨折的后期并发症是
A.髋内翻畸形
B.下肢短缩
C.股骨头缺血性坏死
D.髋关节半脱位
E.创伤性关节炎
成人股骨头的血供主要来自
A.股骨头圆韧带的小凹动脉
B.股骨干滋养动脉
C.骺外侧动脉
D.干骺端上、下侧动脉
E.旋股内外侧动脉
Hold your dream,_________ you might regret some day.
A. and
B. or
C. but
D. so
He can't bear ________ she said to him yesterday.
A. when
B. what
C. where
D. which