单选题 患者男性，30岁上腹痛伴返酸恶心一周，近一天来上腹痛加剧伴全腹痛.当地医院诊为十二指肠球部溃疡穿孔，为进一步明确诊断，以下哪项是不必要的? A、询问病史 B、仔细检查 C、胸腹部X线透视 D、上腹部CT E、白细胞计数和分类

单选题确诊膝关节滑膜结核时，以下哪项最可靠A．低热、盗汗、食欲差B．膝关节肿胀、疼痛、功能受限C．血沉增快D．X线检查膝关节骨质疏松E．滑膜病理检查

单选题有关先天性肾盂输尿管连接部梗阻的原因，下列哪项是不恰当的

单选题患者，男性，56岁，间歇全程肉眼血尿1年多。血尿伴不规则小血块及轻度膀胱刺激症状，不发烧，体重约下降3～4Kg，B超提示膀胱左侧壁上有一5cm大小广基肿瘤，侵犯膀胱壁几乎达全层，左输尿管下段扩张，提示膀胱癌。入院检查：体温正常，脉搏68次／分，血压24／12kPA最适宜的治疗方法是

单选题男，21岁，急性化脓性阑尾炎穿孔导致弥漫性腹膜炎，患者取半卧位的原因不包括

单选题That boys and girls—and men and women—are programmed by evolution to behave differently from one another is now widely accepted. But which of the differences between the sexes are "biological", in the sense that they have been honed by evolution, and which are "cultural" or "environmental" and might more easily be altered by changed circumstances, is still fiercely debated. The sensitivity of the question was shown last year by an uproar at Harvard University. Larry Summers, then Harvard's president, caused a storm when he suggested that innate ability could be an important reason why there were so few women in the top positions in mathematics, engineering and the physical sciences. Even as a proposition for discussion, this is unacceptable to some. But biological explanations of human behavior are making a comeback. The success of neo-Darwinism has provided an intellectual foundation for discussion about why some differences between the sexes might be innate. And new scanning techniques have enabled researchers to examine the brain's interior while it is working, showing that male and female brains do, at one level, operate differently. The results, however, do not always support past clichés about what the differences in question actually are. Another behavioral difference that has borne a huge amount of scrutiny is in mathematics, particularly since Dr Summers'comments. The problem with trying to argue that the male tendency to systemize might lead to greater mathematical ability is that, in fact, girls and boys are equally good at maths prior to teenage years. Until recently, it was believed that males outperformed females in mathematics at all ages. Today, that picture has changed, and it appears that males and females of any age are equally good at computation and at understanding mathematical concepts. However, after their mid-teens, men are better at problem solving than women are. The question raised by Dr Summers does not get to the heart of the matter. Over the past 50 years, women have made huge progress into academia and within it. Slowly, they have worked their way into the higher echelons of discipline after discipline. But some parts of the ivory tower have proved harder to occupy than others. The question remains, to what degree is the absence of women in science, mathematics and engineering caused by innate, immutable ability? Innate it may well be. That does not mean it is immutable. A variety of abilities are amenable to training in both sexes. And such training works. Biology may predispose, but it is not necessarily destiny.

单选题区别原发性与继发性精索静脉曲张，主要依据

单选题鉴别尿路感染与尿道综合征的最根本点是A．尿白细胞的多少B．尿红细胞的多少C．尿白细胞管型的有无D．真性细菌尿的有无E．尿路刺激症状的有无

单选题关于胆管癌的描述，下列哪项是错误的

单选题根据部位，下列哪种胃溃疡最为多见A．高位溃疡B．小弯溃疡C．后壁溃疡D．幽门前溃疡E．复合溃疡

单选题成人腹股沟直疝的传统手术方法是

单选题A．甲状腺癌B．甲状腺囊性腺瘤C．两者均有D．两者均无

单选题 目前认为，行为的遗传基本方式包括（ ） A、单基因遗传 B、多基因遗传 C、染色体遗传 D、以上均是 E、以上均不是

单选题最佳治疗方案是

单选题下列哪项构成直疝三角A．腹直肌外缘、凹间韧带、腹股沟韧带B．腹直肌外缘、腹壁下动脉、腹股沟韧带C．陷窝韧带、股静脉、腹股沟韧带D．联合肌腱、腹股沟韧带、腹壁下动脉E．凹问韧带、腹直肌外缘、联合肌腱

单选题有关股骨颈骨折与粗隆间骨折，哪种说法恰当

单选题 肾下垂的治疗，以下哪项是错误的（ ） A、偶然被发现肾下垂，一般无须进行治疗 B、症状不明显者，一般无须进行治疗 C、有血尿者，应手术治疗 D、有腰痛应加强腹肌锻炼，增加营养，使用紧束弹性宽腰带或肾托 E、症状较重，平卧或托肾后症状无明显好转，并有肾积水感染者，应施行肾悬吊固定术

单选题A．放射治疗 B．化学治疗C．手术治疗 D．放射治疗+手术治疗E．化学治疗+手术治疗

单选题A．新生儿阑尾炎B．小儿阑尾炎C．妊娠期阑尾炎D．老年人阑尾炎

单选题保留受者下腔静脉的肝移植术式是