Krashen uses the ______ hypothesis to explain the relationship between language input and language acquisition and to answer the question of how people acquire languages.

患者外伤伤及右髋部。感右髋痛，不敢活动右下肢，右下肢呈屈曲、内收、内旋和短缩畸形。最可能的诊断是（）

A.股骨颈骨折

B.股骨转子骨折

C.髋关节后脱位

D.髋关节前脱位

E.股内收肌扭伤