单选题女性，30岁，无溃疡病史，因关节酸痛常服水杨酸制剂，6小时前突然大量呕血，血压100/70mmHg，心率120次/分，出血原因最可能是A．胃、十二指肠溃疡B．门脉高压症，食管曲张静脉破裂出血C．急性胃炎D．胃癌E．应激性溃疡

单选题男，65岁，因肠梗阻1周保守治疗无效，拟急症行剖腹探查手术，患者有高血压病史10年。手术前检查．T38℃，血压160/100mmHg，心率100次/分，心电图示ST一T改变，血生化、血气分析结果正常。

单选题患者，女，61岁，多饮多食多尿8年，发现尿蛋白5年，近1个月出现活动时呼吸困难，心悸，验血结果为钠137mmol／L，钾5.9mmol／L，氯109mmol／L，肌酐2121μmol／L，尿素氮12.3mmol／L。尿检为pH5.5，SG 1.010，RBC 6／μL，WBC 18／μL。下列哪项诊断不正确

单选题下述关于隐匿性肾小球肾炎的叙述，错误的是( )(2006年)

单选题A．类风湿因子 B．碱性磷酸酶较高C．组织相容抗原(HLA－B27) D．酸性磷酸酶较高

单选题肾病综合征患者出现高脂血症的原因是

单选题下列不符合尿毒症导致的心血管疾病的描述是

单选题胆总管长度一般是

单选题腹部外伤后合并有出血性休克，其治疗应是

单选题心源性休克患者中心静脉压的变化是

单选题可能导致急性肾功能不全的止血方法是

单选题A．浓缩红细胞B．冷沉淀C．血小板D．免疫球蛋白

单选题周围神经损伤后，不适于判断神经功能恢复情况的检查是

单选题The "standard of living" of any country means the average person's share of the goods and services which the country produces. A country's standard of living, (1) , depends first and (2) on its capacity to produce wealth." Wealth" in this sense is not money, for we do not live on money (3) on things that money can buy. "Goods" such as food and clothing, and "services" such as transport and " (4) ". A country's capacity to produce wealth depends upon many factors, most of (5) have an effect on one another. Wealth depends (6) a great extent upon a country's natural resources. Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a (7) climate; other regions possess none of them. Next to natural resources (8) the ability to turn them to use. China is perhaps as well (9) as the USA in natural resources, but suffered for many years from civil and (10) wars, and (11) this and other reasons was (12) to develop her resources. (13) and stable political conditions, and (14) from foreign invasion, enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country equally well (15) by nature but less well ordered. A country's standard of living does not only depend upon the wealth that is produced and consumed (16) its own borders, but also upon what is indirectly produced through international trade. (17) , Britain's wealth in foodstuffs and other agricultural products would be much less if she had to depend only on (18) grown at home. Trade makes it possible for her surplus manufactured goods to be traded abroad for the agricultural products that would (19) be lacking. A country's wealth is, therefore, much influenced by its manufacturing capacity, (20) that other countries can be found ready to accept its manufactures.

单选题患者自控镇痛（PCA）的优点是

单选题出血坏死性胰腺炎可继发多种并发症，其中最常见的是

单选题世界卫生组织推荐的癌痛治疗方案是

单选题原发性肝癌淋巴转移最多转移至

单选题脾切除使多数病人溶血程度明显减低，且可减少输血量的疾病是

单选题对手术耐受力不良的患者特殊准备中错误的是