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大全TEST12-20 还有一个礼拜就考了,哪位帮俺解答下,感激不尽~~

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楼主
发表于 2010-6-14 12:09:31 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
20.The wild mouflon sheep of the island of Corsica are direct descendants of sheep that escaped from domestication on the island 8,000 years ago. They therefore provide archaeologists with a picture of what some early domesticated sheep looked like, before the deliberate selective breeding that produced modern domesticated sheep began.
The argument above makes which of the following assumptions?
(A) The domesticated sheep of 8,000 years ago were quite dissimilar from the wild sheep of the time.
(B) There are no other existing breeds of sheep that escaped from domestication at about the same time as the forebears of the mouflon.
(C) Modern domesticated sheep are direct descendants of sheep that were wild 8,000 years ago.
(D) Mouflon sheep are more similar to their forebears of 8,000 years ago than modern domesticated sheep are to theirs.D
(E) The climate of Corsica has not changed at all in the last 8,000 years.

答案是D,我选的E。我不太明白为什么选D,文章中并没有出现比较呀,E为什么不可以?
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沙发
发表于 2010-6-14 14:13:31 | 只看该作者
关键是这句话的后半句:They therefore provide archaeologists with a picture of what some early domesticated sheep looked like, before the deliberate selective breeding that produced modern domesticated sheep began.
说mouflon sheep就提供了一个early ds的样子,在selective breeding产生的modern ds之前。这句话中间有一个gap,selective breeding之前和之后的ds的样子是不同滴 = =,结合第一句话,即mouflon sheep要比modern ds更像它们的祖先。

E无关。不一定为真。
板凳
 楼主| 发表于 2010-6-14 15:01:28 | 只看该作者
明白了,太感谢啦~~
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