Tibet is facing a(n)____task to maintain stability and all government workers must be on their highest guard.

A．concerned

B．subtle

C．ridiculous

D．urgent

某男，45岁。肝硬化病史6年，餐后出现上腹部不适，头昏目眩，心悸，汗出。查：心率130次/分，BP100/70mmHg。应考虑为

A．急性胃溃疡穿孔
B．急性胆囊炎
C．急性胰腺炎
D．胃底、食管下段静脉曲张破裂出血
E．心肌梗死