单选题维持育龄妇女基础体温呈双相变化的激素是

单选题A．子宫平滑肌发行的良性肿瘤B．子宫平滑肌发生的恶性肿瘤C．子宫内膜腺上皮发生的恶性肿瘤D．子宫颈鳞状上皮发生的恶性肿瘤

单选题关于清创原则，下列哪项不恰当

单选题直肠癌发生剧烈疼痛是因为

单选题男，35岁，胃大部切除术后3小时，恶心、呕吐，其最常见的原因是

单选题下列不属于内源性抗原的是

单选题术中的无菌原则，下列哪些项是正确的

单选题A．瘘管切开术B．挂线疗法C．肛裂切除术D．局部用药E．口服缓泻剂

单选题女，45岁，外伤脾破裂，失血性休克手术行脾切除术后，脉搏110次／分，血压100／60mmHg，呼吸窘迫，烦躁不安，呼吸频率35次／分，PaO 2 52mmHg，考虑ARDS，对患者的处理中不正确的是

单选题关于拆线时间的叙述，错误的是

单选题对诊断急性血源性骨髓炎有重要意义的依据是

单选题骨折整复时缓解肌肉紧张的最好办法是

单选题恶性葡萄胎与绒毛膜癌的主要区别是

单选题A．肾小球滤过率450μmol／L但707μmol／L

单选题26岁男性患者，临床诊断为急性肾炎，则下列哪项临床表现是该患者必有的

单选题We have known for a long time that the organization of any particular society is influenced by the definition of the sexes and the distinction drawn between them. But we have realized only recently that the identity of each sex is not so easy to pin down, and that definitions evolve in accordance with different types of culture known to us, that is, scientific discoveries and ideological revolutions. Our nature is not considered as immutable, either socially or biologically. As we approach the beginning of the 21st century, the substantial progress made in biology and genetics is radically challenging the roles, responsibilities and specific characteristics attributed to each sex, and yet, scarcely twenty years ago, these were thought to be "beyond dispute". We can safely say, with a few minor exceptions, that the definition of the sexes and their respective functions remained unchanged in the West from the beginning of the 19tb century to the 1960s. The role distinction, raised in some cases to the status of uncompromising dualism on a strongly hierarchical model, lasted throughout this period, appealing for its justification to nature, religion and customs alleged to have existed since the dawn of time. The woman bore children and took care of the home. The man set out tc conquer the world and was responsible for the survival of his family, by satisfying their needs in peacetime and going to war when necessary. The entire world order rested on the divergence of the sexes. Any overlapping or confusion between the roles was seen as a threat to the time-honored order of things. It was felt to be against nature, a deviation from the norm. Sex roles were determined according to the "place" appropriate to each. Women's place was, first and foremost, in the home. The outside world, i.e. workshops, factories and business firms, belonged to men. This sex-based division of the world (private and public) gave rise to a strict dichotomy between the attitudes, which conferred on each its special identity. The woman, sequestered at home, "cared, nurtured and conserved". To do this, she had no need to be daring, ambitious, tough or competitive. The man, on the other hand, competing with his fellow men, was caught up every day in the struggle for survival, and hence developed those characteristics which were thought natural in a man. Today, many women go out to work, and their reasons for doing so have changed considerably. Besides, the traditional financial incentives, we find ambition and personal fulfillment motivating those in the most favorable circumstances, and the wish to have a social life and to get out of their domestic isolation influencing others. Above all, for all women, work is invariably connected with the desire for independence.

单选题老年人发生肠梗阻的原因最常见的是

单选题预后较好的狼疮性肾小球肾炎是

单选题有关盆腔脓肿的治疗错误的是

单选题胃癌晚期血行转移最多见的部位是