一些逻辑问题的分析

aomeisoft7

我怕讲得不好被人笑，写完后查了好几遍逻辑牛人的地盘不敢放肆。

老实讲从第一页到第十八页您回答的每道题我都认真看了，看那些分析真的感觉有所长进。逻辑不像语法，有prep破解那么详细的解答，很多时候错的点都找不着，或者是桥没搭对，或者是话没读懂，真庆幸在备考阶段能有这个帖子，千恩万谢啊~~~

p.s. 头像的那套图我也有收集~~~^^

-- by 会员 Helloface (2010/10/4 20:39:24)

我超喜欢这套小人好可爱啊！！
我真不是牛人 =.=  
马上2战
攒rp嘿嘿嘿~\(≧▽≦)/~

magemily

谢谢牛牛们  麻烦了·~~~

magemily

Jennifer:  Video rental outlets in Centerville together handled 10,000 fewer video rentals in 1994 than in 1993.  The decline in rentals was probably due almost entirely to the February 1994 opening of Videorama, the first and only video rental outlet in the area that, in addition to renting videos, also sold them cheaply.

Brad:  There must be another explanation:  as you yourself said, the decline was on the order of 10,000 rentals.  Yet Videorama sold only 4,000 videos in 1994.

Which of the following, if true, would most seriously weaken the force of the objection that Brad presents to Jennifer's explanation?

(A) In 1994 Videorama rented out more videos than it sold.
(B) In 1994 two new outlets that rent but that do not sell videos opened in Centerville.
(C) Most of the video rental outlets in Centerville rent videos at a discount on certain nights of the week.
(D) People often buy videos of movies that they have previously seen in a theater.
(E) People who own videos frequently loan them to their friends.

再来一道。。。选E。。。原谅我的zt……

aomeisoft7

Jennifer:  Video rental outlets in Centerville together handled 10,000 fewer video rentals in 1994 than in 1993.  The decline in rentals was probably due almost entirely to the February 1994 opening of Videorama, the first and only video rental outlet in the area that, in addition to renting videos, also sold them cheaply.

Brad:  There must be another explanation:  as you yourself said, the decline was on the order of 10,000 rentals.  Yet Videorama sold only 4,000 videos in 1994.

Which of the following, if true, would most seriously weaken the force of the objection that Brad presents to Jennifer's explanation?

(A) In 1994 Videorama rented out more videos than it sold.
(B) In 1994 two new outlets that rent but that do not sell videos opened in Centerville.
(C) Most of the video rental outlets in Centerville rent videos at a discount on certain nights of the week.
(D) People often buy videos of movies that they have previously seen in a theater.
(E) People who own videos frequently loan them to their friends.

再来一道。。。选E。。。原谅我的zt……

-- by 会员 magemily (2010/10/4 23:27:46)

J：1994年租碟子的数量比1993年下降了10000. 原因可能是1994年videorama开张，除了租碟，还以很低的价格卖碟
B：一定有其他的解释，因为：租碟量下降了10000，但videorama只卖了4000张
求削弱B
(E) People who own videos frequently loan them to their friends.
人们买了碟会互相传阅。
解释了为什么只卖了4000张，却满足了10000张的需求。买了碟的人会借给朋友看

magemily

哦   哎哎   我咋没有理解到b是这意思。。。。“一定还有其他原因。。。”
我想的是，j说，这些减少的租金是由于开了v店造成的。。。
B说少了10000张的租金，然而v只卖了4000张。。。(原先没看出他的反驳意思)
要weakenB    即支持原J结论   思路就死了……

zshaoqing

LZ我想问一下，考的时候做逻辑要去分析这道题是属于逻辑的哪个类型吗？我觉得分析再做脑子要转不过来了。。。

aomeisoft7

LZ我想问一下，考的时候做逻辑要去分析这道题是属于逻辑的哪个类型吗？我觉得分析再做脑子要转不过来了。。。

-- by 会员 zshaoqing (2010/10/5 9:46:57)

逻辑的几个分类：支持，削弱，解释，推论，假设，评价，黑脸... 这是最基本的概念

就像阅读题是问主旨还是问细节，不是要分析是哪个类型，这不用分析，是一看到题目就要知道的
建议看下新东方GMAT逻辑解析，了解下基础概念再做题

左摇右摆

我又来请教了~马上就要考了~！
Kern land imposes a high tariff on the export of unprocessed（未加工的） cashew nuts in order to ensure that the nuts are sold to domestic processing plants.  If the tariff was lifted and unprocessed cashews were sold at world market prices, more farmers could profit by growing cashews.  However, since all the processing plants are in urban areas, removing the tariff would seriously hamper the government’s effort to reduce urban unemployment over the next five years.

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

A.    Some of the by-products of processing cashews are used for manufacturing paints and plastics.

B.    Other countries in which cashews are processed subsidize their processing plants.

C.    More people in Kernland are engaged in farming cashews than in processing them.

D.    Buying unprocessed cashews at lower than world market prices enables cashew processors in Kernland to sell processed nuts at competitive prices.

E.    A lack of profitable crops is driving an increasing number of small farmers in Kernland off their land and into the cities.
  始终没搞懂这道题，总觉得E项是加强...

橘子骨头

想问一下LZ 关于ONLY if 和 if ONLY 的区别的

比如说： A ONLY if B。应该是说 A能推出B， B是A 的必要条件对吧？

after A， B 是B能推出A的意思么？

那A if ONLY B 是啥意思？

aomeisoft7

我又来请教了~马上就要考了~！
Kern land imposes a high tariff on the export of unprocessed（未加工的） cashew nuts in order to ensure that the nuts are sold to domestic processing plants.  If the tariff was lifted and unprocessed cashews were sold at world market prices, more farmers could profit by growing cashews.  However, since all the processing plants are in urban areas, removing the tariff would seriously hamper the government’s effort to reduce urban unemployment over the next five years.

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

A.    Some of the by-products of processing cashews are used for manufacturing paints and plastics.

B.    Other countries in which cashews are processed subsidize their processing plants.

C.    More people in Kernland are engaged in farming cashews than in processing them.

D.    Buying unprocessed cashews at lower than world market prices enables cashew processors in Kernland to sell processed nuts at competitive prices.

E.    A lack of profitable crops is driving an increasing number of small farmers in Kernland off their land and into the cities.
  始终没搞懂这道题，总觉得E项是加强...

-- by 会员 左摇右摆 (2010/10/5 19:04:04)

K对未加工的nut出口征高税收，是为了确保nut低价卖给国内加工厂。 If the tariff was lifted，这里lift意思是“取消”，如果关税取消，那么农民就可以赚更多的钱。然而，所有加工厂都在城市，取消关税会使失业率提高。（取消关税，nut价格变高，加工厂成本增加，效益不好，失业就增加了）


求削弱


E.    A lack of profitable crops is driving an increasing number of small farmers in Kernland off their land and into the cities.
如果高关税，农民赚不到钱，很多农民就停止种nut，跑到城市找工作。
这样城市的劳动力供给迅速增加，失业率也就增加了。