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【GMAT逻辑CR】8799-OG16

浏览次数:160 日期:2017-05-10 13:53:47
Male bowerbirds construct elaborately decorated nests, or bowers. Basing their judgment on the fact that different local populations of bowerbirds of the same species build bowers that exhibit different building and decorative styles, researchers have concluded that the bowerbirds' building styles are a culturally acquired, rather than a genetically transmitted, trait. Which of the following, if'true, would most strengthen the conclusion drawn by the researchers?

Male bowerbirds construct elaborately decorated nests, or bowers. Basing their judgment on the fact that different local populations of bowerbirds of the same species build bowers that exhibit different building and decorative styles, researchers have concluded that the bowerbirds' building styles are a culturally acquired, rather than a genetically transmitted, trait.

Which of the following, if'true, would most strengthen the conclusion drawn by the researchers?

 A

There are more common characteristics than there are differences among the bower-building styles of the local bowerbird population that has been studied most extensively.

 B

Young male bowerbirds are inept at bower building and apparently spend years watching their elders before becoming accomplished in the local bower style.

 C

The bowers of one species of bowerbird lack the towers and ornamentation characteristic of the bowers of most other species of bowerbird.

 D

Bowerbirds are found only in New Guinea and Australia, where local populations of the birds apparently seldom have contact with one another.

 E

It is well known that the song dialects of some songbirds are learned rather than transmitted genetically.


【申友解析】


正确答案:B


题干:公园丁鸟会修建精美的鸟巢或者遮荫棚。基于对不同园丁鸟修建巢穴体现出不同的样式的判断,研究人员得出结论说园丁鸟的建筑风格是一种文化传承而不是基因决定的特质。
题目:下面哪一个选项能加强研究人员的结论。
分析:首先分清文化传承和基因特质所表现出来的区别在于文化传承是后天学习所获得的能力而基因特质则是先天所具有的能力。我们要支持后天学习这个观点。
选项A, 相同点多差异性小,这个选项明显是在支持基因特质这个观点,反向逻辑!
选项B,很多年轻的园丁鸟开始是很笨拙的,在花费很长时间观察学习老一辈的行为之后才慢慢形成了自己的建筑风格,这是支持后天文化传承的实例,正确!

选项C, 一种园丁鸟的建筑风格和其他大多数园丁鸟不一样,个例并不能证明普遍性,错误!
选项D,园丁鸟只在NG和A地有,而且当地的鸟们并不大相互交流,这也是在支持先天基因特质决定了建筑风格,反向逻辑!
选项E, 说鸟的鸣叫是一种文化传承而不是先天基因特质,无关属性

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