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【救命】求解释这道LSAT题目!!!

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楼主
发表于 2009-8-6 21:06:00 | 只看该作者

【救命】求解释这道LSAT题目!!!

One method of dating the emergence of species is to compare the genetic material of related species. Scientists theorize that the more genetically similar two species are to each other, the more recently they diverged from a common ancestor. After comparing genetic material from giant pandas, red pandas, raccoons, coatis, and all seven bear species, scientists concluded that bears and raccoons diverged 30 to 50 million years ago. They further concluded that red pandas separated from the ancestor of today’s raccoons and coatis a few million years later, some 10 million years before giant pandas diverged from the other bears.

Which one of the following can be properly inferred from the passage?

答案是D

(D) Scientists have found that giant pandas are more similar genetically to bears than to raccoons.

各位NN拜托帮忙解释一下,想了一晚上头都想大了还是搞不清楚什么关系。救命啊,感激不尽!!!!

沙发
 楼主| 发表于 2009-8-6 21:09:00 | 只看该作者

(A) Giant pandas and red pandas are more closely related than scientists originally thought they were.

(B) Scientists now count the giant panda as the eighth species of bear.

(C) It is possible to determine, within a margin of just a few years, the timing of divergence of various species.

(D) Scientists have found that giant pandas are more similar genetically to bears than to raccoons.

(E) There is substantial consensus among scientists that giant pandas and red pandas are equally related to raccoons.

其他选项也贴出来了。自己先顶

板凳
发表于 2009-8-6 22:27:00 | 只看该作者

recently diverged from a common ancestor ---> genetically similar

(A) Giant pandas 与 red pandas 的关系原文未提及 

(B) 从熊进化来不代表是熊

(C) 扯淡

(D) 某种生物 ---> raccoons 和 bears

       bears ---> giant pandas

      giant pandas 和 raccoons的关系远了点 D正确

(E) 扯淡

哥们gmat不考这种题吧


[此贴子已经被作者于2009/8/6 22:27:27编辑过]
地板
 楼主| 发表于 2009-8-7 00:11:00 | 只看该作者
以下是引用payo在2009/8/6 22:27:00的发言:

recently diverged from a common ancestor ---> genetically similar

(A) Giant pandas 与 red pandas 的关系原文未提及 

(B) 从熊进化来不代表是熊

(C) 扯淡

(D) 某种生物 ---> raccoons 和 bears

       bears ---> giant pandas

      giant pandas 和 raccoons的关系远了点 D正确

(E) 扯淡

哥们gmat不考这种题吧


明白了,之前一直在时间问题上纠缠,是审题没有看清楚,感谢PAYO同学

现在正在拿LSAT练习GMAT的逻辑,主要是想训练一下读题速度和对选项的感觉,所以是有点刻意想让自己钻钻牛角尖,其实我也清楚这种题GMAT不会考,但是毕竟二战嘛,想逼一下自己,看看最后是个什么结果,不想对不起自己的梦想,坚持到这里不继续拼下去那之前的努力都成了sunk cost了,总之还是很感谢!

5#
发表于 2013-5-13 20:10:13 | 只看该作者
21.   One method of dating the emergence of species is to compare the genetic material of related species. Scientists theorize that the more genetically similar two species are to each other, the more recently they diverged from a common ancestor. After comparing genetic material from giant pandas, red pandas, raccoons, coatis, and all seven bear species, scientists concluded that bears and raccoons diverged 30 to 50 million years ago. They further concluded that red pandas separated from the ancestor of today’s raccoons and coatis a few million years later, some 10 million years before giant pandas diverged from the other bears.
Which one of the following can be properly inferred from the passage?
(A) Giant pandas and red pandas are more closely related than scientists originally thought they were.
这可没提到
(B) Scientists now count the giant panda as the eighth species of bear.
(C) It is possible to determine, within a margin of just a few years, the timing of divergence of various species.
(D) Scientists have found that giant pandas are more similar genetically to bears than to raccoons.
Red pandas(raccoons)---10 million years---giant pandas(bears);
Bears---30 or 50 million years---raccoonsD
(E) There is substantial consensus among scientists that giant pandas and red pandas are equally related to raccoons.
manhattan的解释:http://www.manhattanlsat.com/forums/q21-one-method-of-dating-the-emergence-of-species-t3869.html
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