社会主义初级阶段要求我们（）A、从初级阶段实际出发，不能超越这个阶段 B、既积极发展，

巴豆酸的结构简式为CH₃-CH=CH-COOH。现有①氯化氢、②溴水、③纯碱溶液、④丁醇、⑤酸性高锰酸钾溶液，判断在一定条件下，能与巴豆酸反应的 [ ]

A．只有②④⑤

B．只有①③④

C．只有①②③④

D．全部

2009年9月14日，作为国庆60周年庆典背景亮点之一的56根民族团结柱正式在 * * 广场亮相。每根柱子正面绘制身着节日盛装的一男一女载歌载舞图案，背面为该民族的吉祥图案和民族名称。矗立民族团结柱的寓意是  [     ]

A．平等、团结、互助、和谐的56个民族

B．我国实行民族区域自治制度

C．给 * * 广场增添喜庆的气氛

D．56个民族的人民是共和国的脊梁，共同支撑着共和国的伟业

呼吸衰竭

送达下列税务文书时，应取得税务文书送达回证的是（）。

A.调取账簿资料清单

B.税务检查通知书

C.税务稽查任务通知书

D.税务处理决定书

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 19^th 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.

Which of the following is true of the study published in the Journal of Genetic Counseling（）

A. It suggests kids of first cousins suffer from heart defects

B. It was funded by its lead author Robin Bennett

C. It will change people’s opinion of cousin marriages

D. It has lifted the medical ban and removed the social stain