每日逻辑链第三季【1-13】

xunjiejie5 · 发表于 2012-3-6 22:33:38

1. Maria won this year’s local sailboat race by beating
Sue, the winner in each of the four previous years. We
can conclude from this that Maria trained hard.
The conclusion follows logically if which one of the
following is assumed?
(A) Sue did not train as hard as Maria trained.
(B) If Maria trained hard, she would win the
sailboat race.
(C) Maria could beat a four-time winner only if she
trained hard.
(D) If Sue trained hard, she would win the sailboat
race.
(E) Sue is usually a faster sailboat racer than Maria.

2.United Lumber will use trees from its forests for two products.The tree trunks will be used for lumber and the branches converted into wood chips to make fiberboard.The cost of this conversion would be the same whether done at the logging site, where the trees are debranched, or at United's factory.However, wood chips occupy less than half the volume of the branches from which they are made.

The information given, if accurate, most strongly supports which of the following?

(A) Converting the branches into wood chips at the logging site would require transporting a fully assembled wood-chipping machine to and from the site.
(B) It would be more economical to debranch the trees at the factory where the fiberboard is manufactured.

(C) The debranching of trees and the conversion of the branches into chips are the only stages in the processing of branches that it would be in United's economic advantage to perform at the logging site.
(D) Transportation costs from the logging site to the factory that are determined by volume of cargo would be lower if the conversion into chips is done at the logging site rather than at the factory.

(E) In the wood-processing industry, branches are used only for the production of wood chips for fiberboard.

3.Among people who experience migraine headaches, some experience what doctors call "common" migraines, whereas others experience "classical" migraines.Siblings and spouses of common migraine sufferers are themselves twice as likely as the general population to experience common migraines.Siblings of classical migraine sufferers are four times more likely than the general population to experience classical migraines, whereas spouses of classical migraine sufferers are no more likely than the general population to experience such headaches.

The information above provides the most support for which of the following hypotheses?

(A) Susceptibility to classical migraines is more dependent on hereditary factors than is susceptibility to common migraines.

(B) Unmarried adults are more likely to suffer from classical migraines than they are to suffer from common migraines.（no tie）

(C) People who do not experience migraine headaches are unlikely to have spouses who are migraine headache sufferers.(no tie)

(D) Children of people who suffer from common migraines are not more likely than the general population to experience a common migraine.(no tie)

(E) Between one-quarter and one-half of the general population suffer from either common or classical migraine headaches.(no tie)

4.The symptoms that United States President Zachary Taylor began showing five days before his death are consistent with arsenic poisoning.Recent examination of Taylor's bones, however, revealed levels of arsenic comparable to those found in the bones of Taylor's contemporaries.These levels are much lower than the levels of arsenic that remain in the bones of arsenic poisoning victims who live for more than a day after ingesting a lethal dose of the poison.

Which of the following is most strongly supported by the statements given?

(A) The symptoms that Taylor began showing five days before his death are consistent with poisoning other than arsenic poisoning.

(B) Taylor's death was not the result of any kind of poisoning.

(C) The symptoms that Taylor began showing five days before his death were not caused by a lethal dose of arsenic.

(D) The symptoms that Taylor began showing five days before his death grew more severe each day.

(E) It is unusual for a person who has ingested a lethal dose of arsenic to survive for more than a day.

5.Neither a rising standard of living nor balanced trade, by itself, establishes a country's ability to compete in the international marketplace.Both are required simultaneously since standards of living can rise because of growing trade deficits and trade can be balanced by means of a decline in a country's standard of living.

If the facts stated in the passage above are true, a proper test of a country's ability to be competitive is its ability to

(A) balance its trade while its standard of living rises

(B) balance its trade while its standard of living falls

(C) increase trade deficits while its standard of living rises

(D) decrease trade deficits while its standard of living falls

(E) keep its standard of living constant while trade deficits rise

xunjiejie5 · 发表于 2012-3-6 22:35:51

Answer choice (A): This answer does not justify the conclusion that Maria
trained hard. The answer does justify the conclusion that Maria trained, but
because this is not the same as the conclusion of the argument, this answer is
incorrect.
Another way of attacking this answer is to use the Justify Formula. Consider the
combination of the following two elements:
Premise: Maria won this year’s local sailboat race by beating
Sue, the winner in each of the four previous years.
Answer choice (A): Sue did not train as hard as Maria trained.
Does the combination of the two elements lead to the conclusion that Maria
trained hard? No, and therefore the answer is wrong.
Answer choice (B): This is a Mistaken Reversal of what is needed (and
therefore the Mistaken Reversal of answer choice (C)). Adding this answer to
the premise does not result in the conclusion. In Justify questions featuring
conditionality, always be ready to identify and avoid Mistaken Reversals and
Mistaken Negations of the relationship needed to justify the conclusion.
Answer choice (C): This is the correct answer. Adding this answer to the
premise automatically yields the conclusion.
Answer choice (D): Because we do not know anything about Sue except that
she lost, this answer does not help prove the conclusion.
If you are having difficulty understanding why this answer is incorrect, use the
Justify Formula. Consider the combination of the following two elements:
Premise: Maria won this year’s local sailboat race by beating
Sue, the winner in each of the four previous years.
Answer choice (C): If Sue trained hard, she would win the sailboat race.
The combination of the two creates the contrapositive conclusion that Sue did
not train hard. But, the fact that Sue did not train hard does not tell us anything
about whether Maria trained hard.
Answer choice (E): Because this answer addresses only the relative speed of the
two racers, it fails to help prove that Maria trained hard.

qiuhua01234567 · 发表于 2012-3-6 22:53:28

被逼。。先写这么多。。明天再来
Premise:M赢了S
Conclusion：M训练很辛苦
0.55
前提：不论在哪转换的钱是相同的，只是木棒占的运输空间小
1:25
Background:A的数量在下降，不是偶然，地球O的层级在下降

premise:A缺少保护他们的东西

Conclusion:O层的消失导致A数量下降

3:20

Premise：增收钱将会使近点公共汽车比小车便宜，很多人会转变用公交

Conclusion：

Premise:Siblings and spouses of common migraine sufferers are themselves twice as likely as the general population to experience common migraines.Siblings of classical migraine sufferers are four times more likely than the general population to experience classical migraines

Conclusion:spouses of classical migraine sufferers are no more likely than the general population to experience such headaches.
(坑爹的太复杂了。。这个直接粘了）2:10

Premise:T里面A的含量和比起那些在摄入A后活过一年的人的含量少得多。

1：55
最后一题坑爹了

2010vicky · 发表于 2012-3-6 23:55:25

木有计时，才开始复习GMAT。。。
【1-13】
1· 前提：M赢了S，S是前4年的赢家；
结论：M训练得很苦
---------M只有训练辛苦才能赢S-------C
2· 前提：
结论：

爱眠梦的咸鱼 · 发表于 2012-3-7 21:02:57

12’
1. premise: M赢了S
conclusion: M训练辛苦
推测：
D
53’
2.premise：UL在logging site和factory做产品成本一样
Conclusion：chips占用的空间比树枝的一半还少
D

55’
3.Premise：si和sp的common得common的概率是普通人的2倍
conclusion:si的classical得classical是普通人的4倍，sp的classical不比普通人高
A
46’
4.premise:ZT死亡五天前的病症和arsenic poisoning一致
conclusion:但检验显示他体内的arsenic含量和同时期的人一样,比因arsenic poisoning死亡的人低很多

推测：其他原因导致了比那些人低
C

43‘
5.单独rising standard of living或balanced trade都不能建立一个国家在国际市场的能力
这两者都需要，因为standard of living增加是因为贸易赤字增加，贸易可以均衡是因为standard of living的下降
推测：赤字下降----->standard of living 下降----->balanced trade
D

风鸣蝉 · 发表于 2012-3-7 23:40:39

15"
P:M打败了S，S是蝉联四年的冠军
C:M训练刻苦
B

43"
P:UL两种加工树的途径，耗费相同
C:其中一种占用的空间比另一种一般还少
D

1'16
P:SPO和SBI患普通偏头痛的概率是普通偏头痛患者的2倍，SBI是患古典偏头痛的概率是患古典偏头痛的4倍，但是SPO患古典偏头痛的概率不超过患古典偏头疼的概率。

50"
P:T在死亡五天前显示a中毒
T的骨头重含a和同龄人一样，比超过中毒超过一天的人骨头含a量低

30“
单独的贸易和生活水平的提高都不能建立国家的国际市场竞争力。
因为生活水平的提高可能是财政赤字的增加，贸易平衡可能是生活水平的下降。

A

南瓜0729 · 发表于 2012-3-7 23:47:02

14s
P:M beats S
C:M trained hard.
推测：people who train hard will win
A---》c

34s
B：trees can make two things.trunk--lumber branch-chips
p:the cost is same.
P:chips occupy smaller space than branches.
推测：占地小省钱
D

40s
B：two kinds of headaches:Co Cl
P:siblings are twice as likely as general people to get Co.
siblings are four times as likely as general people to get Cl.
C: spouses are no more likely than the general population to experience such headaches.
推测：Cl 遗传
A

40s
P：5 days before T's death, the symptoms are A poisoning.
But the level of A in his bone is lower.
推测: 在骨头里转化了
C

xunjiejie5 · 发表于 2012-3-9 23:29:13

1 C 00:46
2 D 03:24
3 A 04:23
4 A 05:14
5 A 02:46
感觉这一类型的的题，不太顺手啊，有没有什么好的心得能不能分享下啊

yhmo139 · 发表于 2012-3-11 22:58:30

1.论据：M今年赢过S，S是曾经的冠军
结论：M训练刻苦
推测假设：S训练没有M刻苦；训练对于赢得比赛非常重要
18’

3.论据：si和sp的co m是一般common m的两倍
si的cl m是一般classical m的四倍
结论：sp的cl m跟一般cl m相同
1min21s

4.背景：总统的死前5天的症状与a中毒相似
论据：总统体内的a毒药的量跟当时普通人的差不多
结论：总统的a量比那些因a中毒死的人的量低很多
51‘

5.论据：只凭贸易逆差和生活质量是不能衡量一个国家竞争力的
原因：贸易逆差可以由生活质量下降平衡，生活质量上升可能是因为贸易逆差
推测：贸易逆差和生活质量是不是都同时较好
34’

小弟第一次做逻辑链的练习，虽然不知道是不是还能报名...不过希望想跟着各位练习找找感觉，逻辑是我最愁的一部分，个人感觉自己不太有很好的逻辑思维。木材那个题根本写不出来...想请问各位各题的选项在哪里？先谢过啦！

livdl · 发表于 2012-3-13 18:37:31

19
P M 在几年的赛船比赛上打败了四年前的冠军S
C M 训练很刻苦
不是其他的原因导致了M 的胜利
B

49
P 一种树能被做成两种产品一种是。。一种是wood chip
生产者两种产品的成本是相同的不管是在采伐地还是在工厂
C 但是生产成成品的量只有采伐branch的量的一半
多出的成本通过多付出原材料来获得
D

40
P 有两种偏头痛一种是classic 一种是common
C 研究发现得common的人的配偶及兄弟姐妹得COMMON的几率是一般人的2倍
而得classic的兄弟姐妹的几率是一般人的四倍
但是配偶的几率与普通人相当
COMMON对周围环境有影响
Classic只对基因什么的有影响
A

32
P 有猜测是总统的死是被人投毒
C 但是通过骨质检验骨头中毒的含量大大低于摄入此毒一年后的人的含量
有可能随着时间的增加骨头中毒含量减少了
C

53
P 贸易平衡与生活水平的提高中的任何一个都不能使国家竞争力增强
C 只有在两方面都保持的情况下才可以因为赤字及贸易的平衡可以通过降低生活标准来达到
A

[逻辑小分队] 每日逻辑链第三季【1-13】

所属分类: GMAT考试

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