导致上消化道大量出血最常见的病因是（）
A.食管癌
B.胃癌
C.急性胃炎
D.消化性溃疡
E.肝硬化食管下段曲张静脉破裂
参考答案：D
(2013·安徽高考)—How did your interview with the manager go?
—________ He seemed interested in my experience, but he didn't ask for references.
A．Perfect!
B．I'm not sure.
C．That's right.
D．Couldn't be better.
刷卡收费条件下如何取消本次收费操作后重新收费？
