常引起上消化道出血的情况是（）

A.十二指肠球部溃疡

B.出血坏死性胰腺炎

C.成人消化道息肉

D.胃平滑肌瘤

E.机械性肠梗阻

　In the coming decades, Europe’s influence on affairs beyond its borders will be sharply limited, and it is in other regions, not Europe, that the 21st century will be most clearly forged and defined. Certainly, one reason for NATO’s increasing marginalization stems from the behavior of its European members. With NATO, critical decisions are still made nationally; much of the talk about a common defense policy remains just that — talk. There is little specialization or coordination. Missing as well are many of the logistical and intelligence assets needed to project military force on distant battlefields. With the Cold War and the Soviet threat a distant memory, there is little political willingness, on a country-by-country basis, to provide adequate public funds to the military.