_______ of my parents are on holiday in Hainan now. [ ]
A. All
B. Any
C. Both
D. Some
答案:C
母牛倒地不起综合征的病因不包括()
A.骨折
B.蛋白质缺乏
C.神经损伤
D.关节脱臼
E.矿物质代谢紊乱
患者,男性,35岁,既往有慢性肝炎病史,劳累后突然呕大量咖啡色胃内容物。查体:面色苍白,巩膜轻度黄染,四肢湿冷。该患者出血原因考虑为()
A.出血性胃炎
B.胃十二指肠溃疡
C.门静脉高压
D.胃癌
E.胆道出血