问题 单项选择题


以下提供若干个案例,每个案例下设若干个考题。请根据答案所提供的信息。在每道下面的A、B、C、D、E五个备选答案中选择一个最佳答案。

患者,男性,54岁,右眼红痛、视力下降10天。10天前被玉米叶划伤右眼,后出现右眼畏光、流泪、眼红、眼痛,视力进行性下降。眼科检查见:Vod0.05,结膜混合充血(++),角膜中央浸润灶呈牙膏样外观,可见卫星灶,前房积脓约1mm。

关于真菌性角膜溃疡,错误的是()

A.常有植物外伤史

B.可发生于其他角膜上皮缺损后

C.有上呼吸道感染病史

D.气候温热潮湿地区多发

E.可发生于全身长期大量运用抗生素后

答案

参考答案:C

单项选择题
单项选择题

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.

Why did Christie Smith resort to the Bible().

A.Because God has stern words on cousin marriages.

B.Because the Bible supports cousin marriages.

C.Because she felt guilty falling in love with her cousin’s son.

D.Because she wanted to know God’s words on cousin marriages.