— What do you think of the movie?

— I think it was________disappointing. [ ]

A. a bit of  

B. a little of

C. part of  

D. sort of

何谓关节脱位（）

A.关节分离

B.关节囊扭伤并断裂

C.关节韧带断裂

D.关节面失去正常对合关系

E.关节出现畸形和弹性固定