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GWD 17-34求助,7楼另加第9题

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楼主
发表于 2005-12-7 06:12:00 | 只看该作者

GWD 17-34求助,7楼另加第9题

GWD 17-34


During the month of May, crabs arrive on Delaware’s beaches to lay eggs.  Certain shorebirds depend on these eggs for food during their annual spring migration to their northern breeding grounds.  Delaware’s crab population has declined recently.  This decline, however, poses no serious threat to the migrating shorebird populations:  by remaining longer in Delaware, the birds will be able to eat enough crab eggs to allow them to complete their migration.



Which of the following, if true, most seriously weakens the argument?




A.   No other food available to the birds on Delaware’s beaches is as nutritious and accessible as are crab eggs.


B.    The decline in the number of crabs on Delaware’s beaches is due to the harvesting of crabs by humans.


C.   There are more crabs on Delaware’s beaches than in any other area that the migrating birds pass through.


D.   The crabs do not conceal their eggs.


E.    The earlier in the season the shorebirds complete their migration, the more likely they are to breed successfully.


我选C,答案是E.


能帮忙看看吗?我怎么看不明白。谢谢


[此贴子已经被作者于2005-12-7 12:26:38编辑过]
沙发
发表于 2005-12-7 07:16:00 | 只看该作者

是应该选E,C为无关选项


原文说只要   停留的时间长一些就可以


吃够蛋,E说越早完成迁徙越能成功产卵,因此=螃蟹减少还是会影响到鸟的数量,削弱原文

板凳
 楼主| 发表于 2005-12-7 07:59:00 | 只看该作者
我开始看错题目了,我知道C是无关选项。但是我还是不明白E说的the more likely they are to breed successfully和题目里的the birds will be able to eat enough crab eggs to allow them to complete their migration.有什么关系。

地板
发表于 2005-12-7 11:40:00 | 只看该作者
poses no serious threat to the migrating shorebird populations------------the more likely they are to breed successfully这个就是题眼, 请参考
5#
发表于 2005-12-7 12:09:00 | 只看该作者

关键在于题目结论中只要remaining longer in LACE>Delaware就会no serious threat to the migrating shorebird populations和E中The earlier...the more likely they are to breed successfully之间的矛盾。LACE>


LACE>题目的结论是这些鸟逗留的时间长点就不会对他们的population造成影响,但E说鸟要成功繁殖(直接影响population)必须尽早complete their migration,所以remaining longer是不可行的。LACE>

6#
 楼主| 发表于 2005-12-7 12:12:00 | 只看该作者
明白了。谢谢。
7#
 楼主| 发表于 2005-12-7 12:25:00 | 只看该作者

另外,能帮忙说说GWD 17-9吗?以前有人问过,但是没人解答。


Press Secretary:  Our critics claim that the President’s recent highway project cancellations demonstrate a vindictive desire to punish legislative districts controlled by opposition parties.  They offer as evidence the fact that 90 percent of the projects canceled were in such districts.  But all of the canceled projects had been identified as wasteful in a report written by respected nonpartisan auditors.  So the President’s choice was clearly motivated by sound budgetary policy, not partisan politics.



Which of the following is an assumption on which the press secretary’s argument depends?



A.   Canceling highway projects was not the only way for the President to punish legislative districts controlled by opposition parties.


B.    The scheduled highway projects identified as wasteful in the report were not mostly projects in districts controlled by the President’s party.


C.   The number of projects canceled was a significant proportion of all the highway projects that were to be undertaken by the government in the near future.


D.   The highway projects canceled in districts controlled by the President’s party were not generally more expensive than the projects canceled in districts controlled by opposition parties.


E.    Reports by nonpartisan auditors are not generally regarded by the opposition parties as a source of objective assessments of government projects.


答案是B,我虽然觉得这个选项是最好的,但是还是觉得它不就是原文的 They offer as evidence the fact that 90 percent of the projects canceled were in such districts. 重复吗?这能算作assumption?

8#
发表于 2005-12-7 13:09:00 | 只看该作者

原文的论据是反对党所有的项目计划都是浪费, 结论是我们不能因为90%被总统否决计划来自反对党,就认为他在报复。


但是 如果所有在被审查认为是浪费的计划中,执政党的计划占多数,但最后被否决的让大部分来自反对党( B取非),那总统仍然就有存在报复


所以B正确

9#
发表于 2005-12-7 13:11:00 | 只看该作者

并不重复。注意这里有个小小的细节上的差别。


题目中说的是all of the canceled projects had been identified as wasteful,是说所有被cancel的project是wasteful的,这里的集合是canceled projects。


B中说的集合是The scheduled highway projects identified as wasteful in the report,即所有wasteful projects。


如果把B取反,即大部分wasteful projects是在districts controlled by the President’s party,而90 percent of the projects canceled were in districts controlled by opposition parties,便会极大的削弱原题的结论。


A,C&E与本题无关,D看似相关,实则无关,取反并不能削弱结论。

10#
发表于 2005-12-7 14:01:00 | 只看该作者

agree with jjll


補充一下:


critics claim that cancelled projects (A) are in oppositing parties' disctricts  


secretary claim: no, they are wasteful projects(B)


if A = B, then critics are correct


B.    The scheduled highway projects identified as wasteful in the report were not mostly projects in districts controlled by the President’s party.


---> shows that A not equal B

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