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

单选题与感染和梗阻关系最密切的结石成分是

单选题 对于性动机的描述不正确的是（ ） A、性动机是以性需要为前提 B、最易引起性动机的外界刺激是感觉刺激 C、性动机可分为生理性动机和社会性动机 D、卖淫属于生理性动机 E、性动机是满足性需要的内在驱动力

单选题下列不符合轻微病变性肾小球肾炎的是

单选题关于Apert综合征，下列说法不正确的是（ ）

单选题关于大骨节病，下列哪项是错误的？

单选题关于EBCP的叙述，下列哪项不正确

单选题下列不符合内胚窦瘤的描述是

单选题高钾血症病人，下列静脉注射液中哪种可有效降低血钾浓度

单选题关于纵隔肿瘤的特异性症状，下列哪项不正确

单选题男，51岁。双下肢麻木、无力10个月，胸部有如束带感，下肢行走不稳，似踩棉花状。查体见双膝反射活跃，双手Hoffmann征阳性。最可能的诊断是

单选题男，42岁。顽固性溃疡2年，拟行手术治疗，不应选择的手术方式是