【每日逻辑练习第二季】【1-3】

Geranium_Bayy

1. There is relatively little room for growth in the overall carpet market, which is tied to the size of the
population. Most who purchase carpet do so only once or twice, first in their twenties or thirties, and then perhaps again in their fifties or sixties. Thus as the population ages, companies producing carpet will be able to gain market share in the carpet market only through purchasing competitors, and not through more aggressive marketing. Which one of the following, if true, casts the most doubt on the conclusion above?
逻辑链：地毯市场没有多大发展空间了。因为这个和population直接挂钩。所以producers只能通过增加市场份额：并购竞争公司的方式而不是市场竞争的方式获利。
削弱：1、可以通过其他办法占据市场份额而不是通过并购。
2、人群趋势向着20-30or50-60岁的人发展（买的人就更多，就可以通过市场竞争的方式获利）
3、carpet market 推出了一次性毛毯（special carpet）很受欢迎，人们需要时常更换（这时候就可以用到aggressive market）
(A) Most of the major carpet producers market other floor coverings as well.无关
(B) Most established carpet producers market several different brand names and varieties, and there is no remaining niche in the market for new brands to fill. 无关
(C) Two of the three mergers in the industry’s last ten years led to a decline in profits and revenues for the newly merged companies. 并没有提到市场份额减少
(D) Price reductions, achieved by cost-cutting in production, by some of the dominant firms in the carpet market are causing other producers to leave the market altogether. Correct，由于价格下降其他company退出通过其他方式增加市场份额
(E) The carpet market is unlike most markets in that consumers are becoming increasingly resistant to new patterns and styles. 无关

2.Scientists are discussing ways to remove excess carbon dioxide from the atmosphere by increasing the amount that is absorbed by plant life.  One plan to accomplish this is to establish giant floating seaweed farms in the oceans.  When the seaweed plants die, they will be disposed of by being burned for fuel.
Which of the following, if true, would indicate the most serious weakness in the plan above?
-- PREP07 CR1 NO.9
逻辑链：为了reduce co2，科学家要建立海草工厂。当海草die的时候，它会自动燃烧。
削弱：1、燃烧产生的co2大于等于吸收的co2
2、吸收完以后它会在晚上释放出来（或者以某种形式出来）【不是直接削弱结论，很可能不是这个选项】
3、找到了更好的替代方法。【不是直接削弱结论，很可能不是这个选项】
(A) Some areas of ocean in the Southern Hemisphere do not contain sufficient nutrients to support large seaweed farms. 但是并不能否认他能够减少co2的事实。
(B) When a seaweed plant is burned, it releases an amount of carbon dioxide comparable to the amount it has absorbed in its lifetime. Correct
(C) Even if seaweed farms prove effective, some people will be reluctant to switch to this new fuel. 但是并不能否认他能够减少co2的事实。
(D) Each year about seven billion tons of carbon dioxide are released into the atmosphere but only about five billion tons are absorbed by plant life. 只要能吸收酒证明有用
(E) Seaweed farms would make more money by farming seaweed to sell as nutritional supplements than by farming seaweed to sell as fuel. 无关，文中没有提到money

3、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?
逻辑链：J认为1994的影碟租赁之所以减少是因为新开了一家竞争公司并且他的价格低廉。反对者认为新开的那家还没有原来那家多。
削弱反对者/加强：1、指出其他下降的原因。（如借给别人看了）
(A) In 1994 Videorama rented out more videos than it sold. 加强
(B) In 1994 two new outlets that rent but that do not sell videos opened in Centerville.无关
(C) Most of the video rental outlets in Centerville rent videos at a discount on certain nights of the week.无关
(D) People often buy videos of movies that they have previously seen in a theater. 无关
(E) People who own videos frequently loan them to their friends. Correct

4.Mourdet Winery:  Danville Winery's new wine was introduced to compete with our most popular wine, which is sold in a distinctive tall, black bottle.  Danville uses a similar bottle.  Thus, it is likely that many customers intending to buy our wine will mistakenly buy theirs instead.
Danville Winery:  Not so.  The two bottles can be readily distinguished:  the label on ours, but not on theirs, is gold colored.
Which of the following, if true, most undermines Danville Winery's response?
逻辑链：DW的酒和MW的酒竞争。MW认为DW的酒瓶外观和自己的一样。顾客很容易拿错以为是拿了自己公司生产的。DW反驳说两种酒外观很好区分，DW用的是金色标签。
削弱DW：1、金色标签其实也不好分辨。结果还是拿错了。
(A) Gold is the background color on the label of many of the wines produced by Danville Winery. 无关
(B) When the bottles are viewed side by side, Danville Winery's bottle is perceptibly taller than Mourdet Winery's. 说出了其他的差别。但是却和选项无关，因为顾客也不一定会发现这个差异
(C) Danville Winery, unlike Mourdet Winery, displays its wine's label prominently in advertisements. 无关，并没有指出会因此增加顾客辨别此差异的结果
(D) It is common for occasional purchasers to buy a bottle of wine on the basis of a general impression of the most obvious feature of the bottle.  Correct，Gold： obvious feature
(E) Many popular wines are sold in bottles of a standard design. 加强

5、Finding of a survey of Systems magazine subscribers:  Thirty percent of all merchandise orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five.
Finding of a survey of advertisers in Systems magazine:  Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.
For both of the findings to be accurate, which of the following must be true?
逻辑链：杂志商说只有30%的顾客订阅该杂志是小于35岁。广告商说大部分订阅该杂志的人小于35岁。
1、        杂志商和广告商接触的群体不同。广告商只是调查了小众恰巧是大部分小于35岁。
2、        只有小于35岁的才愿意接触广告
(A) More subscribers to Systems who have never ordered merchandise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five.
(B) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now无关
(C) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.
(D) Last year, the average dollar amount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over.
(E) Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine. Correct， 接触群体不一样

fesche

P:Carpet market will not grow
People buy carpet twice, 20-30, 50-60
people age
company sell by competitor not by market
weaken
逻辑链：
aging and carpet consumption
能够说明selling是by market的
E-D

Absorb carbon dioxide
plant seaweed
seaweed plant die, will burn into fuel
weaken
逻辑链：
seaweed can reduce carbon dioxide
攻击：
seaweed create carbon dioxide
burning can cause more carbon dioxide
B

10000 fewer rental in 1994 compare to 1993
reason is new mall, which sell cheap and rent
must be another reason, new shop sold 4000 copies, but the loss is 10000
weaken
逻辑链：另外的商店开张不是导致rental少的原因
攻击：
外力，经济差了，大家都不rent了
卖了4000，其他都是租的
A-E

M’s wine compete with D’s wine with similar bottle, customers took mistake
D’s label is different, D is gold
weaken D’s
逻辑链，不同的地方是label，所以客人不会认错
攻击：label很容易认错
label很小
D

30% subscribed response under 35
most response to ad are under 35
must be true, assumption
E

(A) More subscribers to Systems who have never ordered merchandise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five. 没有说其他人没有order
(B) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now. 不能说明，因为时间没有比较
(C) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five. 和第二个P不同
(D) Last year, the average dollar amount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over. 和钱没有关系
(E) Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine. 这个有可能，没有注册

hedyail

总的来说，5题错2题，特别是最后一题，想了很久，要看一下有没有办法可以突破这种类型的题目

精炼题
T:29s
bg:carpet market growth little room
premise:the growth is related to population. People buy carpet twice, 20s/30s+50s/60s.
conclusion:people aging, gain market share by purchasing competitors but not aggressive marketing
TYPE: weaken
可能选项：people boom before. a lot of people become 20/30 or 50/60
D

A) Most of the major carpet producers market
other floor coverings as well. - not related
(B) Most established carpet producers market
several different brand names and varieties,
and there is no remaining niche in the
market for new brands to fill. - not related
(C) Two of the three mergers in the industry’s last
ten years led to a decline in profits and
revenues for the newly merged companies. - 世道不好，merging可能不会好, Not sure
(D) Price reductions, achieved by cost-cutting in
production, by some of the dominant firms
in the carpet market are causing other
producers to leave the market altogether. -减少成本有利于占领市场，right !
(E) The carpet market is unlike most markets in
that consumers are becoming increasingly
resistant to new patterns and styles. - not related


2
T:20s
BG: increase amount of plant to remove CO2
premise:establish giant floating seaweed farms in ocean and when seaweed die and will be burned for fuel
猜测：燃烧呼出的CO2大于吸入的
B

3
T:46s
BG: video rental handled fewer in 94 than 93
premise:jennifer said the reason is opening of new video rental outlet to sell video cheap. Brad said the reason is not good because video only sold 4K videos instead of total 10K
A?  e

4
T:34s
BG:two wine bottle look similar. MW said their customer will mistakenly buy DW's because of the similar bottle. DW refutes to say the bottle are different because of the labels on DW are golden
D

5
T:31s
因为看了system的广告而买东西的人有30%是35岁以下
因为看了广告而买东西的大部分订单是35岁以下的人发出的
很绕口,做了很久
A   e

JoeyNO1

精选题：提干50
Conclusion： the carpet companies can not benefit from enlarging market instead they can only get benefit through purchasing the small companies.
Premise: since the customer likely to buy carpet two times of their life young and old.
Maybe the company can get benefit by enlarging the market globally by to those who not ye but carpet
43
A-->Non relevant
B--> no direct relationship
C--> correct
D-->no relevant
E--> strength the conclusion
2. 题干 48.18
Conclusion： plant farm on sea in use of the green plant to absorb the oxidize
Premise:　more and more carbon dixidize in the atmosphere the green plant could help to absorb those oxidize
Maybe burning the plant will produce more carbon D
A-->non relevant
B--> correct
C-->no relevant
D-->overall not specific
E--> no relevant
3.38.66"
Conclusion the new Videorama opened caused the decline of the sales quantity of the old ceterville
Premise:　there is a decline in the quantity of the ceterville from 1993 to 1994 in which year the new videocrama opened
Maybe the rent quantity in vedeorama is more than the sell quantity 4000
19.66
A-->correct
B-->weaken
C-->no direct relevant
D--> no relevant
E-->no relevant
4. 53.64
Premise: Danville Winery wine"s bottle is similar with us result in the customer mistook the them with ours
Response: the label of ours is golden
Maybe the customer buy the wine without looking at the label
A-->non relevant
B-->non-relevant
C-->non relevant
D--> correct
E-->no relevant
5.47.23
Conclusion: both of the conclusions show that people under thirty five are likely to influence by the advertisements and take their order
39.12
A-->no relevant
B-->no relevant
C--> under
D->no relevant
E--> correct

宋痂岛__

D
B
E
D
E

rachelY

【精练】做错，本来还以为稳对
Shell game
3. There is relatively little room for growth in the
overall carpet market, which is tied to the size of the
population. Most who purchase carpet do so only
once or twice, first in their twenties or thirties, and
then perhaps again in their fifties or sixties. Thus as
the population ages, companies producing carpet
will be able to gain market share in the carpet market
only through purchasing competitors, and not
through more aggressive marketing.
Which one of the following, if true, casts the most
doubt on the conclusion above?
--BIBLE WEAKEN NO.3
43’
B：毯子市场总体只有很小的上升空间，并且和人口规模相关。
P:大多数人一生中只会买一或两次毯子。第一次是在他们二、三十岁，第二次大概是在五、六十岁时。
C：因此，随着人口年龄增长，生产毯子的公司只能通过收购竞争者获得市场份额，而不是通过更加积极的市场营销。
削弱
思路1：人口年龄 人一生买毯子数量
2： 收购竞争者没用----在市场份额上，不是利润！！
3： 市场营销有用------------还有剩余的市场空间，可以通过创立新品牌，不需要收购竞争者
我觉得自己没搞懂2 3及市场空间的核心区别
(A) Most of the major carpet producers market
other floor coverings as well.无关。
已经超出了讨论范围，这里只限于地毯市场，排
(B) Most established carpet producers market
several different brand names and varieties,
and there is no remaining niche in the
market for new brands to fill.已成立的毯子生产者已经霸占了市场，新品牌无法在进入这个市场。但剩下的几个生产商里面还是要竞争啊
If there are no remaining niches to fill, then there is no way to expand other than
to purchase a competitor.市场饱和，那么只有并购来增加市场份额，增强，错

(C) Two of the three mergers in the industry’s last
ten years led to a decline in profits and
revenues for the newly merged companies.十年前合并的两三家毯子公司亏损，新公司趁虚而入获利。思路2，对
------------------------做错，又是shell game[心态：你以为的正确答案其实是个陷进！！出题人故意把错的 有迷惑性的选项放在前面，让你主观上放松、觉得下面的选项都是错的 不用看了。
请看到最后一个！！！！！不要自以为事
One point worth noting is that it is no accident that the most tempting wrong
answer choice appears just before the correct answer. This is a classic LSAT
trick, and one that is very effective because most test takers relax once they find
an answer they feel is attractive. This makes them less likely to closely examine
the answers that follow. Never relax during the LSAT!]+conditional statement
 1. The conclusion is about market share. 市场份额！！
Answer choice (C) is about a decline in profits and revenues. 利润和收益！！
The two are not the same, and so the information in the answer choice does not weaken the conclusion.两码子事
如果还是觉得这是一码事情，反驳点2：(C) simply suggests that when companies purchase
their competitors the endeavor is often financially unsuccessful. Essentially,
answer choice (C) fails to prove that purchasing competitors is unnecessary to
gain market share. 经济上失败≠用这种方法获得活动市场份额没意义

(D) Price reductions, achieved by cost-cutting in
production, by some of the dominant firms
in the carpet market are causing other
producers to leave the market altogether.一些主导公司通过降低生产成本去降价，使得其他公司被迫推出市场。同B
Answer choice (D): This is the correct answer. If price reductions drive out
some of the carpet producers, then other producers can take the market share
left behind. This scenario shows that a company can gain market share without
purchasing a competitor, thus attacking the necessary condition in the
conclusion. 再好好体会 B C D

(E) The carpet market is unlike most markets in
that consumers are becoming increasingly
resistant to new patterns and styles.毯子的顾客群体越发的抵触新style.排



【逻辑链】
2.
Scientists are discussing ways to remove excess carbon dioxide from the atmosphere by increasing the amount that is absorbed by plant life.  One plan to accomplish this is to establish giant floating seaweed farms in the oceans.  When the seaweed plants die, they will be disposed of by being burned for fuel.
Which of the following, if true, would indicate the most serious weakness in the plan above?
-- PREP07 CR1 NO.9
29’
B:科学家们正探讨通过增加C02被植物的吸收量来将多余的CO2移除。
P：通过在海上建立大型的浮游海藻农场去完成这个。当海藻死掉时，他们将会被烧掉作为燃料利用。
削弱
思路1： 海藻最后燃烧产生的C02还比它吸收掉的多。
    2： 无法建立这个农场
(A) Some areas of ocean in the Southern Hemisphere do not contain sufficient nutrients to support large seaweed farms.一些，说明还是有的地方可以建成的，排
(B) When a seaweed plant is burned, it releases an amount of carbon dioxide comparable to the amount it has absorbed in its lifetime.对，思路1
(C) Even if seaweed farms prove effective, some people will be reluctant to switch to this new fuel.有人不愿意用新燃料，无关
(D) Each year about seven billion tons of carbon dioxide are released into the atmosphere but only about five billion tons are absorbed by plant life.讲述背景，无关
(E) Seaweed farms would make more money by farming seaweed to sell as nutritional supplements than by farming seaweed to sell as fuel.怎么处理死掉的农场，无关

3.
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?
-- PREP07 CR1 NO.10
53’
J：C处的video零售商1994年租出去的数量比93年少了10000个。
   数量的减少几乎完全是因为94年V的开张，第一个也是惟一一个不仅出租video，还便宜卖它们的地方
B：这肯定还有别的解释。下降的订单数量是10000，而94年V只卖出了4000个。
削弱B
思路1： V是卖出了4000个，但它还租出去了N多个
(A) In 1994 Videorama rented out more videos than it sold.思路1 ----------------错，但我觉得它没有说具体数量，无法判断，但我又把正确答案给排除了- -所以只能选了它
(B) In 1994 two new outlets that rent but that do not sell videos opened in Centerville.增强，错
(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.
----------------------正确。因为Videorama，人们买，而买的人又转租给别人，使得别人不再从Video rental outlets租借，因此租的少了，起始原因还是Videorama。这里我之前没搞懂的地方！！！

4.
Mourdet Winery:  Danville Winery's new wine was introduced to compete with our most popular wine, which is sold in a distinctive tall, black bottle.  Danville uses a similar bottle.  Thus, it is likely that many customers intending to buy our wine will mistakenly buy theirs instead.
Danville Winery:  Not so.  The two bottles can be readily distinguished:  the label on ours, but not on theirs, is gold colored.
Which of the following, if true, most undermines Danville Winery's response?
-- PREP07 CR1 NO.11
21’
M：D新出的酒和我们最火的酒用了相似的bottle。因此，我们顾客可能买的时候会错把他们的酒当成我们的。
D：不会。两个瓶子很容易区分。我们的标签是金色的。
削弱D
思路1：标签没用：没人看、调了。。。
(A) Gold is the background color on the label of many of the wines produced by Danville Winery.对----错，其实我还是没怎么搞懂。但看大家解析，意思是MANY这里无关？
(B) When the bottles are viewed side by side, Danville Winery's bottle is perceptibly taller than Mourdet Winery's.新的辨别方法，排
(C) Danville Winery, unlike Mourdet Winery, displays its wine's label prominently in advertisements.增强
(D) It is common for occasional purchasers to buy a bottle of wine on the basis of a general impression of the most obvious feature of the bottle.排------正确，一般的消费者只通过瓶子最明显的部位区分。无论用什么背景，只要瓶子相似就不行。
(E) Many popular wines are sold in bottles of a standard design.排

5.题目读的很晕
Finding of a survey of Systems magazine subscribers:  Thirty percent of all merchandise orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five.
Finding of a survey of advertisers in Systems magazine:  Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.
For both of the findings to be accurate, which of the following must be true?
-- PREP07 CR1 NO.12
1’3’’
对S杂志订阅者的调查：in response to去年的杂志广告中，有30%的商品订单是来自35岁以下的订阅者。
对       广告商的调查：in response to在杂志上去年刊登的广告，大多数的商品订单是来自35岁以下的人。
M B T
(A) More subscribers to Systems who have never ordered merchandise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five.不对把，排
(B) Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now.排除
(C) Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.不是订阅者，错
(D) Last year, the average dollar amount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over.价格不知，排
(E) Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine.对

ba1a糖儿

7.8打卡
CB
P：消费者年龄增长可买次数↑，但人口不长
C：只能通过收购占领市场，而不是强劲的需求
BI 人口不长，人一生只购一两次

预测：1.好多人没用过毯子，潜在消费者很多
2.从前购过的消费者回头客的概率大了（这是U对文章背景的否定，危险哦）

A 无关选项。
B strengthen，没有市场可以进入了
C correct，逻辑你要这么做，结构就是打不到！！
D 他因导致，但是这个他因是助攻conclusion的
E 不像其他市场——这些市场的消费者对新款花色都很抵触。但是文章没有提到毛毯的花色如何？无关

罗小黑

sherryli 发表于 2012-4-26 16:57
Question 1remise: little room for growth in carpet market because only few times for one person to ...

Thank you for the explanation of Question 3 !

yangyang2

38'
as the consumers of the carpet gorw older ,the company's market strategy will not be useful
weaken:new people will experience 20s and 30s and 50s only if the population is growing
18'
to reduce the CO2 in the air,they inyroduce the seaweed because it will absorb CO2 when it burns out
weaken:the burning of seaweed  create harmful things
28'
the sold strategy must have more influences on the people in this reigon such as the buying decision make people less likely to lend as people who buy the viedoes will lend to their friends so that the total demand of the videoes will decline or drindle
17''
the D says the label will be easy to recognize
weaken:the lable is hard to recognize for the first buyers,custonmers tend to buy wines according to the most popular characters of the wine at first glance so they mistake the wines which are similar to M's brand
24''
most be true question so we have to deduce sommething directly form the paragraph
there are only about 30% of subscribers buy goods due to the ads,bunearl all the customers of the ads are over 35 so there must be a lot of customers who are not subscribers but buy the goods according to the ads.

gmat冲刺

精炼：D
1.计时37s
2. Premise：
There is relatively little rom for growth in the overall carpet market, which is tied to the size of the population. Most people only purchase carpet once or twice
Conclusion:
Companies producing carpets will only gain market share by purchasing their competitors
3.猜测：If the company can design greater carpet and attractive people, they can gain more cunstomers
4.选项分析
A. Irrelevant, what we discuss here is the market share
B.This choice strengthen the argument
C. Irrelevant, we don't concern about the profits
D.Correct! This choice gives an example to extend the market share by another way
E.Strength the argument!

逻辑链:
1、B
21s
Premise:
Remove excess carbon dioxide from the atmosphere
Conclusion:
Establish giant floating seaweed farms in the ocean
猜测：After the seaweed are burned , they will release the same amount of carbon dioxide as they absorb.
2、E
37s
Premise：
The decline was on the order of 10000 rentals, but V sold only 4000 videos in 1994
Conclusion:
There must be another explanation except the opening of V
猜测：People who bought videos from V may lend the videos to their frineds
3、D
25s
Premise:
The label on D is gold colored, which is different from M
Conclusion:
The two bottles can be readily distinguished
猜测：People don't pay attention to the label
4、E
55s
Premise:
One finding of subscribers says 30% are under age 35; one finding of advertisers says most are under age 35.
猜测：some people who place orders are not subscribers of the magzine