急性坏疽性阑尾炎，当阑尾壁全层坏疽后，腹痛性质为（）

A.持续性刀割痛

B.持续性隐痛

C.持续性剧痛

D.持续性跳痛

E.持续性胀痛

A: I’d like to place a person-to-person call to Chicago. The number is 932—8647, but I don’t know the area code.
B: ().

A. Sorry. I can’t tell you.

B. What’s the name of the party you’re calling

C. this is operator speaking.

D. OK. Here you are.