起自跟骨上面及伸肌支持带，止于第2、3、4趾的趾背腱膜的肌是（）
A.跖肌
B.腓肠肌
C.腓骨短肌
D.短伸肌
E.趾短伸肌
参考答案：E
Let Susan _____ the homework by herself. [ ]
A. to do
B. does
C. doing
D. do
硬骨板 lamina dura
短伸肌
短伸肌