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问题 单项选择题 A1型题

患者女，因骨折卧床1个月后发现有泌尿系结石，患者患泌尿系统结石的原因可能是（）

A.肾功能不全

B.液体摄入不足

C.血液循环减慢

D.活动少而增加骨钙质的游离

E.饮用水的成分

答案

参考答案：D

解析：泌尿系统结石发病原因与反复性感染、长期卧床、尿路梗阻、骨折、代谢及营养障碍有关。骨折或截瘫的病人，长期卧床常可引起骨质脱钙，尿钙增加，同时由于尿液滞留、并发感染，尿中很容易形成结石。该患者因骨折卧床1个月发现泌尿系统结石，故选D。解题关键：尿路结石成因复杂，当尿钙增加并发潴留时易出现。【考点】：泌尿系统结石的原因

单项选择题

Passage twoEducating girls quite possibly yields a higher rate of return than any other investment available in the developing world .women’s education may be unusual territory for economists ,but enhancing women’s contribution to development is actually as much an economic as a social issue .and economics ,with its emphasis on incentives ,provides guideposts that point to an explanation for why so many girls are deprived of an education Parents in low-income countries fail to invest in their daughters because they do not expert them to make an economic contribution to he family :girls grow up only to marry into somebody else’s family and bear children .Girls are thus seen as less valuable than boys and kept at home to do housework while their brothers are sent to school-the prophecy becomes self-fulfilling ,trapping women in a vicious circle of neglect. An educated mother ,on the other hand ,has greater earning abilities outside the home and faces an entirely different set of choices. She is likely to have fewer but healthier children and can insist on the development of all her children ,ensuring that her daughters are given a fair chance .The education of her daughters then makes it much more likely that the next generation of girls ,as well as of boys ,will be education and healthy . The vicious circle is thus transformed into a virtuous circle. Few will dispute that education women has great social benefits.But it has enormous economic advantages as well .Most obviously ,there is the direct effect of education on the wages of female workers.Wages rise by 10 to 20 percent for each additional year of schooling. Such big returns are impressive by the standard of other available investments ,but they are just the beginning .Education women also has a significant impact on health practices,including family planning.

The passage mainly discusses ( )

A．unequal treatment of boys and girls in developing countries

B．the potential earning power of well –educated women

C．the major contributions of educated women to society

D．the economic and social benefits of educating women

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单项选择题

我国慢性肾衰竭最常见的病因为（）

A.慢性肾小球肾炎

B.糖尿病肾病

C.狼疮肾炎

D.高血压肾病

E.梗阻性肾病
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