一些逻辑问题的分析

fannybeibei

thanks～～～

天使追梦

找到题目啦~ http://forum.chasedream.com/GMAT_CR/thread-485758-1-1.html

aomeisoft7

找到题目啦~ http://forum.chasedream.com/GMAT_CR/thread-485758-1-1.html

-- by 会员 天使追梦 (2010/9/23 15:37:09)

已回

chengshaopu

問下本月寂靜里的一道題~，謝啦
记得一题说motor-scooter的销售量大大降低了，这个现象coincide with政府颁布法令要求motor-scooter需要带helmet,于是motor-scooter的销售人员就说主要就是这个法令导致销售下降，因为大部分他们的客户就是不喜欢戴那个头盔。问weaken销售人员所说的。有一个选项说some motor scooter在颁布法令前就戴头盔了。还有一个说coincide with政府颁布法令的时候，motor-scooter的insurance cost提高了

答案應該在他說的那兩個中，應該是哪個呀？

aomeisoft7

問下本月寂靜里的一道題~，謝啦
记得一题说motor-scooter的销售量大大降低了，这个现象coincide with政府颁布法令要求motor-scooter需要带helmet,于是motor-scooter的销售人员就说主要就是这个法令导致销售下降，因为大部分他们的客户就是不喜欢戴那个头盔。问weaken销售人员所说的。有一个选项说some motor scooter在颁布法令前就戴头盔了。还有一个说coincide with政府颁布法令的时候，motor-scooter的insurance cost提高了

答案應該在他說的那兩個中，應該是哪個呀？

-- by 会员 chengshaopu (2010/9/23 17:26:40)

这肯定是选 “ coincide with政府颁布法令的时候，motor-scooter的insurance cost提高了 ”
题目逻辑是： 政府法令 > 导致 motor scooter销量降低
要削弱这个因果逻辑关系，一般都是 找 其他的原因，而 指出政府法令 只是和销量 降低的 偶然巧合，而不存在因果关系
所以 insurance cost 就是 motor scooter 销量降低的真正原因


另外一个选项some motor scooter在颁布法令前就戴头盔
用some 作为样本 的例子 从来就没有对过！因为 不能代表整体
而且背景条件已经说了 大部分他们的客户就是不喜欢戴那个头盔
“一些人以前就戴头盔” 不能削弱结论

左摇右摆

这个问题刚刚发帖问了，可是没人理我..请楼主帮忙啊~！
Advertisement: For sinus pain, three out of four hospitals give their patients Novex. So when you want the most effective painkiller for sinus pain, Novex is the one to choose.

Which of the following, if true, most seriously undermines the advertisement’s argument?

(A) Some competing brands of painkillers are intended to reduce other kinds of pain in addition to sinus pain.
(B) Many hospitals that do not usually use Novex will do so for those patients who cannot tolerate the drug the hospitals usually use.
(C) Many drug manufacturers increase sales of their products to hospitals by selling these products to the hospitals at the lowest price the manufacturers can afford.
(D) Unlike some competing brands of painkillers, Novex is available from pharmacies without a doctor’s prescription.
(E) In clinical trials Novex has been found more effective than competing brands of painkillers that have been on the market longer than Novex.

答案是D

不明白为什么选D。。。

aomeisoft7

这个问题刚刚发帖问了，可是没人理我..请楼主帮忙啊~！
Advertisement: For sinus pain, three out of four hospitals give their patients Novex. So when you want the most effective painkiller for sinus pain, Novex is the one to choose.

Which of the following, if true, most seriously undermines the advertisement’s argument?

(A) Some competing brands of painkillers are intended to reduce other kinds of pain in addition to sinus pain.
(B) Many hospitals that do not usually use Novex will do so for those patients who cannot tolerate the drug the hospitals usually use.
(C) Many drug manufacturers increase sales of their products to hospitals by selling these products to the hospitals at the lowest price the manufacturers can afford.
(D) Unlike some competing brands of painkillers, Novex is available from pharmacies without a doctor’s prescription.
(E) In clinical trials Novex has been found more effective than competing brands of painkillers that have been on the market longer than Novex.

答案是D

不明白为什么选D。。。

-- by 会员 左摇右摆 (2010/9/23 18:07:51)

这题应该选C
我查了很多前人的帖子，基本上都是支持C的
我查到更详细的解释再告诉你！

左摇右摆

感谢楼主啊，我当时选的也是C。随时交流~！

chengshaopu

謝謝啦~~解釋的很詳細吶。LZ牛人吶，哈哈~

Lambton

63. Some good cooks are gourmet cooks who pride themselves on always using extravagantly rich ingredients in elaborate recipes. Some good cooks can be characterized as fast-food cooks. They may use rich ingredients as long as the recipes are easy to follow and take little time. Other good cooks are health food enthusiasts, who are concerned primarily with the nutritional value of food. But even though not all good cooks are big eaters, they all enjoy preparing and serving food.

If the information in the passage is true, which one of the following CANNOT be true?

A.    Most good cooks do not use extravagantly rich ingredients.
B.    Everyone who enjoys preparing and serving food is a good cook.
C.    More good cooks who use extravagantly rich ingredients are big eaters than are good cooks who do not use such ingredients.
D.    There are fewer good cooks who enjoy serving and preparing food than there are good cooks who are big eaters.
E.    Gourmet cooks, fast-food cooks, and cooks who are health food enthusiasts are all big eaters.

呵呵 那我就不客气的问咯~ 嘿嘿
这题为什么选E啊？ 我虽然觉得E是对的没错，可是D也对呀！！！