单选题患者，女，30岁，间断上腹痛4年，今日腹痛变为胀痛，伴呕吐，量大，呕吐物为宿食。查体上腹部有振水音，转动体位，症状不能缓解。最可能的诊断是

单选题The road to controlling population growth in the 20th century was paved with good intentions and unpleasant policies that did not work, a new book argues an historian who grew up as the youngest of eight children might well be expected to approach the question of whether the world is overpopulated from an unusual angle. Matthew Connelly, a professor at Columbia University, dedicates his study of those who thought the planet had too many people and tried to do something about it to his parents, "for having so many children". Yet, he assures the reader, it Was not his personal experience of large families that drew him to the subject. Mr. Connelly's mentor, Paul Kennedy of Yale University, believed it was necessary to look beyond great-power rivalries to understand the post-cold-war era. In 1994 the pair wrote an article for Atlantic Mouthly arguing that population growth in poor countries, increasing awareness of global economic inequality and the prospect of mass migration could lead to clashes between the West and "the rest". When, years later, Mr. Connelly began his own book on population growth, he still thought of the topic as a way to offer a broader understanding of world security. He ended up writing a very different-and angry-book, one about people who looked at the human race reproducing itself and saw what a gardener sees when looking at a prize plant: something to be encouraged to bloom in some places and pruned in others. As the world population soared, the population controllers came to believe they were fighting a war, and there would be collateral damage. Millions of devices were exported to poor countries although they were known to cause infections and sterility. "Perhaps the individual patient is expendable in the general scheme of things," said a participant at a conference on the devices organized in 1962 by the Population Council, a research institute founded by John [D] Rockefeller, "particularly if the infection she acquires is sterilizing but not lethal. " Furthermore, statistical estimates suggest that as much as 90% of the reason that women have families of a particular size is simply because that is the number of children they want. Where women gained education and rights, birth rates fell. As with reproduction itself, for people to become less fruitful, desire must precede performance.

单选题碎片状坏死主要见于

单选题A．口服茶碱控释片 B．静脉输注甲泼尼松(甲基强的松龙)，雾化吸入β 2 受体激动剂 C．口服泼尼松(强的松)，短期使用(1周) D．吸入异丙肾上腺素 E．使用麻黄碱(麻黄素) 下列哮喘病人应采取哪项治疗措施

单选题诊断Crohn病最有意义的病理改变是

单选题A．血清铁减低、总铁结合力减低 B．血清铁减低、总铁结合力增高C．血清铁增高、总铁结合力不增高 D．血清铁增高、总铁结合力下降

单选题肺炎支原体肺炎最突出的症状是

单选题关于糖尿病肾病的叙述，不正确的是

单选题 男性，45岁，头昏、乏力半年。体检：血压170/100mmHg，体型肥胖。可以排除下列何种疾病？ A、原发性醛固酮增多症 B、肾上腺皮质功能减退症 C、原发性高血压 D、Gushing综合征 E、特发性醛固酮增多症

单选题下述物质中不引起支气管哮喘发病的炎性介质是

单选题有机磷中毒治疗中，最重要的是

单选题以活性形式分泌的胰酶是

单选题原发性肾病综合征患者，首次治疗，每日用泼尼松60mg。3周后尿蛋白仍为(++++)，此时应

单选题隐性肝性脑病病人的临床特点是

单选题输血不是作为主要传播途径的病毒性疾病为

单选题急性糜烂出血性胃炎和慢性胃炎的确诊手段是

单选题在下列哪种情况下，通常不会出现第二心音分裂

单选题 下列哪种激素不是肾脏分泌的? A、血管紧张素 B、1α羟化酶 C、红细胞生成素 D、前列腺素族 E、精氨酸加压素

单选题A．阿少夫细胞B．陷窝细胞C．泡沫细胞D．嗜神经细胞现象

单选题糖尿病酮症酸中毒早期补碱的主要危害是