There is_______ old picture on the wall. _______ picture is my father's. [      ]

A. a, The      

B. an, The        

C. an, A         

D. the, The

可屈小腿、伸大腿或协助臀大肌伸直躯干的肌是（）

A.股薄肌

B.长收肌

C.短收肌

D.大收肌

E.股二头肌