单选题A．三叉神经受损B．面神经受损C．舌咽神经受损D．舌下神经受损

单选题与Babinski征意义相同的病理征是

单选题胃镜检查时，患者体位

单选题女性，30岁，转移性有下腹痛10小时，除考虑急性阑尾炎外，还应考虑

单选题下列情况下出现胸式呼吸减弱的是

单选题不属于胃镜检查的适应证是

单选题需了解慢性肝病肝脏功能受损程度时应选择

单选题双侧上眼睑下垂见于

单选题进行纤维支气管镜检查时，进镜应

单选题水肿这一症状的概念不包括

单选题贫血病人的MCV68n、MCH26pg、MCHC234％，贫血属于

单选题小儿佝偻病的常见头颅畸形为

单选题Charles Darwin wed his cousin Emma and spawned 10 children, including four brilliant scientists. Albert Einstein’s second wife Elsa was his first cousin. Queen Victoria said “I do” to hers. So have millions worldwide. In parts of Saudi Arabia, 39% of all marriages are between first cousins. In the U. S., though, the practice bears a stigma of inbreeding just this side of incest. The taboo is not only social hut legislative; 24 states ban the marriage of first cousins: five others allow it only if the couple is unable to bear children. A major reason for this ban is the belief that kids of first cousins are tragically susceptible to serious congenital illnesses. That view may have to change. A comprehensive study published recently in the Journal of Genetic Counseling indicates such children run an only slightly higher risk of significant genetic disorders like congenital heart defects — about two percentage points above the average 3% to 4%. Says the study’s lead author, Robin Bennett, president-elect of the National Society of Genetic Counselors, which funded the study: “Aside from a thorough medical family history, there is no need to offer any genetic testing on the basis of consanguinity alone”. Publication of the study will do more than tweak public awareness; it will enlighten doctors who have urged cousin couples not to have children. “Just this week,” says Bennett, “I saw a 23-year-old woman who had had a tubal ligation because her parents were cousins and her doctor told her she shouldn’t have children.” The American proscription against cousin marriages grew in the 19th century as wilderness settlers tried to distinguish themselves from the “savage” Indians, says Martin, author of the book Forbidden Relatives: The American Myth of Cousin Marriage. “The truth is that Europeans were marrying their cousins and Native Americans were not.” And doesn’t God have stern words on the subject? Christie Smith, 37, a Nevada writer, says she felt guilty when she fell in love with her first cousin’s son Mark. “I was trying so hard to convince myself not to have these feelings,” she recalls, “that I went to the Bible looking for confirmation that it was wrong. And what I found was the exact opposite: support for cousin marriages.” The patriarch Jacob married two of his first cousins, Rachel and Leah. Smith married Mark in 1999. The medical ban is lifted; the social stain may take longer to disappear.

单选题痰液直接涂片检查时出现硫磺样颗粒见于

单选题肺部叩诊呈鼓音时须具备

单选题外周血PDW的正常值为

单选题A．风湿结节B．Osier小结C．沿动脉排列及分布D．生长迅速，局部炎症反应不明显E．游走性皮下结节

单选题若代谢性酸中毒伴低钾血症时，尿pH5．6，说明存在

单选题右侧胸腔少量积液时，其积液上方触觉语颤可

单选题于心尖区触及舒张期震颤，应考虑