男性，50岁，酒后上腹痛，腹胀8小时，查体：上腹明显压痛，肌紧张，反跳痛，血压120／80mmHg，脉搏88次／分，血清淀粉酶>500Somogyi单位

对判定预后有帮助的指标是（）

A.血清钙低于1.75mmol／L

B.血清淀粉酶>500Somogyi单位

C.尿淀粉酶>1000Somogyi单位

D.血清淀粉酶持续升高超过5天

E.血清钾、血清镁同时降低

---Mum, I climbed to get the Teddy Bear from the top of the shelf.

---My goodness! You _______ yourself. You _____ do that again next time.

A．must have hurt; mustn’t

B．should have hurt; can’t

C．could have hurt; mustn’t

D．might have hurt; won’t be able to