犬剖腹产常用的手术通路是（）

A.脐前切口

B.耻骨前切口

C.脐后切口

D.腹侧壁正中切口

E.腹侧壁斜切口

—Did you hear any strange _______ when the quake happened?

—No, I was in my garden with my flowers and was enjoying the

     beautiful _______ of my birds at that time. [ ]

A. voice; noise

B. noise; sound

C. whisper; sound

D. sound; voice