【每日逻辑练习第二季】【1-7】

一粒黄豆。

3/11 【1-7】
45'
gackground:lt live and breed in PO, AT
premise:95% DNA taken from B match those taken from J
conclusion:lt in P that feed near B hatch in J
premise:some group of lt feed and hatch in J
A irrelevant
B correct
C irrelevant
D irrelevant
E irrelevant
精炼感觉要求很多背景知识啊，比如10000对小乌龟来说是很长的距离，比如DNA相似问题。。。。
错选B：自己添加了assumption，两个地方的乌龟有共性
正确选项D：看了解释还是觉得这个题出的不好，为什么在A找到了95%相似DNA就能weaken另外一个95%的相似呢？ 解答说不用爬那么远。。。那至少前提要告诉我哪个近哪个远啊- - 我地理又没学过

44'
premise:12 , 5 years ago,weak pundra-->increase export
conclusion:to increase export we should weak pundra
prephrase:condition changes, other approaches
错选E
关键在于问题，题干虽然说-为了increase exports--〉should weak pundra，好像是其他途径也行
但是问题说，什么能质疑这个方法达到目标。也就是weak pundra 无法increase export，E没有削弱这一层，无关
正确选项B：说已经在峰值附近了，所以货币贬值也没什么提高，符合题目要求

50'
premise:poor sanitation-->population decrease in city;immigration from rural -->population increase
premise:now good sanitation-->stop decrease popu;immigration continued-->increase popu
question:growth rate has not changed
prephrase:some other factors caused death
错选A：什么是引起死亡的主要因素并不重要。除非选项说，这个因素最近导致了比以前都多得死亡
错了
跟人口增长有关的因素：死亡率，出生率，迁入迁出。 死亡率降低，迁入迁出继续增加，总人口增长却不变，说明其他因素off set了
正确答案B

50'
counterpremise:need more on cost of seed+additional fertilizer
counterconclusion:cost of seed+additional fertilizer> savings on pesticides
conclusion:demand rise-->seeds widespread
C
但是bf1并没有推出什么结论，只提供了前提

48’
premiseXC bought first time has smaller margin, PXC for replacing has higher margin, premise:number of PXC sold unchanged,but total profit increase
prephrase: proportion of PXC bought for replacing increase
D


居然错了三道。。。。要崩溃了。。。。最近逻辑跌入低谷，这日子没发过了。。。。

纽约我爱你

1~31s
Premise: the DNA of the two groups matches well
Conclusion: the b group hatch on j
Weaken: 1.a survey shows that the j hatch on b
2.the DNA of two other species matches well, too. But they are known that they are different
3.animals hatch and feed at other places change their DNA
Answer: D59s


2~48s
Premise: 1. the P has been weak for twice
2. each time it made the D strong
3. the D is weak now（这这这，好像文中根本没有啊，完全是我自己意淫的……而且这个绝对会误导选项）
Conclusion: to make the D strong, the P should be made weak.
Weaken: 1.there is no relationship between the weakness of P and the growth of D
2.the truth is that P became weak because of the growth of D
Answer: A1’18’’ 错了

正解是B。 A要注意人家是加强啊啊啊



3~50s
Premise: 1. the population decreased because of bad sinary but immigration makes it grow
2.the immigration is continuing
3.the sinary is improved
Conclusion: the population doesn’t increase significantly
Explain: the number of move-in doesn’t meet the number of death
Answer: A?2’错了

正解是B。注意看清楚啊， A是从前比现在大……orz



4~33s
Premise: 1.the genetic seeds are expensive
2.the consumers like to buy food without drug
Conclusion: the seeds will be popular
Answer: C56’’


5~45s
Premise: 1.first-buyers would like to buy less profitable computers than replace-buyers
2. the number of computers sold last year was unchanged
3.the profit per computer stays unchanged
4.the total profit increased
Conclusion: the replace-buyers are more in this year
Answer: D 35’’(注意第三个选项，不看清楚好有迷惑性啊……)


今天发现问题一半在看不懂题上，另一半在马虎上。哦，不对，还有就是自己预测的答案总是没有出现……这么说来应该就是思路还是不对吧……怎么才能加强呢……头痛

okplokpl0714

精练：
Lt live and breed in distinct groupsO and A.
95% of DNA samples from BP match Jw-->juvenile P Lts feed BP , hatch in Jw 10000km away.
削弱猜测：Jw本来就有这种乌龟；A的乌龟和Jw有关系
Answer：D

逻辑链：
25.
12 and 5 years ago,DP currency-the pundra-weak:unusually low the stable currencies.
weak pundra---->DP's manufactured products a bargain and DP's exports up
Now politician:should allow pundra weak again to cause another exports up.
削弱猜测：exports up带来的利益没有manufactured products bargain的损失大
Answer：B因为生产力已经达到顶峰了，出口量已经在之前就到顶了，无法再加大出口了。

26.
Population of M grown at steady rate for over a century.
A century ago,poor sanitation-->high mortality rates
increase immigration from rural---->fueled the population(this immigration increase)
More,sanitation has improved enormously-->But population not significantly accelerated.
解释猜测：移民减少了或者其他他因
Answer：B

27.
BF1:evidence against the main conclusion
BF2:main conclusion
Answer:C

28.
modles cost less and smaller profit >powerful models
Last year profit>previous year,although same number sold and price and profit remained unchanged
支持猜测：powerful models卖的比以前好
Answer：B
答案是D。。。first-time computer buyer比原来少了，first-time买家喜欢低端models，要是电脑售出数量不变的话，那就说明买低端models的人少了，那是不是就是我猜测的那样，高端model销售多了？？

Cybill

1. 25‘
BG: some Loggerhead turtles live in Pacific Ocean, some live in Atlantic.
Premise: young Pacific turtles, which live near Baja Peninsula, has the same DNA as Japanese nesting sites.

2. 乱：currency drop----pundra weak-----exports increase

3. 40’
Conclusion: the population of Megacity not increase
Premise: immigration from rural villages. city senitaion improve.
4. 33.7
5. 40'
下班啦，赶不及了！

Mint静默

1) 计时：41s  这一题好多地名0 0
2) 逻辑链
Background Information:
Loggerhead turtles live and breed in distinct groups, of which some are in the Pacific Ocean and some are in the Atlantic.
Premise:
Ninety-five percent of the DNA samples taken from the Baja turtles match those taken from turtles at the Japanese nesting sites.
Conclusion:
juvenile Pacific loggerheads that feed near the Baja Peninsula hatch in Japanese waters 10,000 kilometers away.
3) 推测：
选项要么正对DNA samples进行质疑，要么直接反驳juvenile Pacific loggerheads不可能去那么远的地方hatch
Ps. 特地百度了下Japanese water 在pacific ocean 里，地理盲伤不起
4) 选项分析：
(A) Nesting sites of loggerhead turtles have been found the Pacific coast of North America Several thousand kilometers north of the Baja peninsula. 本文讨论的事Pacific loggerheads turtles, 选项给的样本太宽泛了
(B) The distance between nesting sites and feeding sites of Atlantic loggerhead turtles is less than 5,000 kilometers. 无关，本文讨论的事Pacific turtles
(C) Loggerhead hatchlings in Japanese waters have been declining in number for the last decade while the number of nesting sites near the Baja peninsula has remained constant. 无关
(D) Ninety-five percent of the DNA samples taken from the Baja turtles match those taken from Atlantic loggerhead turtles. Correct
(E) Commercial aquariums have been successfully breeding Atlantic loggerheads with Pacific loggerheads for the last five years.  无关

25.
1) 计时：41S
2) 逻辑链
P：以前，weak D国货币 导致D国的 manufactured products a bargain on world markets and exports were up substantially.
C：in order to cause another similarly sized increase in exports, the government should allow the 货币 to become weak again.
3) 猜测
凡事适可而止 or 过去的事情不能预测未来的事情
4) 选项分析
(A) Several of the politicians now recommending that the pundra be allowed to become weak made that same recommendation before each of the last two periods of currency weakness. 支持 非 weaken
(B) After several decades of operating well below peak capacity, Darfir's manufacturing sector is now operating at near-peak levels. Correct，说明市场饱和已经不能在increase in exports了
(C) The economy of a country experiencing a rise in exports will become healthier only if the country's currency is strong or the rise in exports is significant. 无关，economy’s health 不在讨论范围内
(D) Those countries whose manufactured products compete with Darfir's on the world market all currently have stable currencies. 无关
(E) A sharp improvement in the efficiency of Darfir's manufacturing plants would make Darfir's products a bargain on world markets even without any weakening of the pundra relative to other currencies. 无关

26.
1) 计时： 44s
2) 逻辑链
P: This immigration has continued and even increased. City sanitation has improved enormously
CX: the city's population growth has not significantly accelerated.
3) 猜测
它因解释CX
4) 选项分析
(A) Mortality rates that were associated with poor sanitation in Megacity a hundred years ago were orders of magnitude higher than are mortality rates associated with vehicular traffic, which is currently a major cause of death in the city. 无关比较
(B) For several decades, Megacity, as distinct from the countryside, has had a steadily declining birth rate. Correct
(C) Cities smaller than Megacity have also experienced sustained population growth. 无关
(D) The great majority of immigrants to Remsland settle in Megacity, at least initially. 反而更不能解释了
(E) Megacity has long offered better employment prospects than most rural areas. 导致migration的一个原因，无关

27.
1) 计时： 41s
2) 逻辑链
B1： 用来支持老C的P
B2： 新C
3) 选项分析
选C

28.
1) 计时：30S
2) 逻辑链
P1: First-time computer buyers buying PXC home computers typically buy models that cost much less and have a smaller profit margin per computer than do PXC computers bought by people replacing their computers with more powerful models.
P2: About the same number of PXC computers were sold and the prices and profit margins for each computer model that PXC sells remained unchanged.
问C是什么
3) 猜测
people replacing their computers with more powerful models变多了
4) 选项分析
选D

Mint静默

这一次全对~好开心！

Elisha728

10'35
DEBAD

Elisha728

又错了两个！！！！！！！！！

Elisha728

逻辑链第四个为什么不选A？

Elisha728

(30261-!-item-!-188;#058&004144)
Twelve years ago and again five years ago, there were extended periods when the Darfir Republic's currency, the pundra, was weak:  its value was unusually low relative to the world's most stable currencies.  Both times a weak pundra made Darfir's manufactured products a bargain on world markets, and Darfir's exports were up substantially.  Now some politicians are saying that, in order to cause another similarly sized increase in exports, the government should allow the pundra to become weak again.
Which of the following, if true, provides the government with the strongest grounds to doubt that the politicians' recommendation, if followed, will achieve its aim?
(A) Several of the politicians now recommending that the pundra be allowed to become weak made that same recommendation before each of the last two periods of currency weakness. Irrelevant
(B) After several decades of operating well below peak capacity, Darfir's manufacturing sector is now operating at near-peak levels.
(C) The economy of a country experiencing a rise in exports will become healthier only if the country's currency is strong or the rise in exports is significant. Irrelevant
(D) Those countries whose manufactured products compete with Darfir's on the world market all currently have stable currencies. Irrelevant
(E) A sharp improvement in the efficiency of Darfir's manufacturing plants would make Darfir's products a bargain on world markets even without any weakening of the pundra relative to other currencies. irrevelant

Analysis

Why the correct answer is B instead of E

Look carefully at E, the word “would” means hypothesis instead of reality. If a sharp improvement does happen, then Darfir’s products can be a bargain on world markets without any weakening of the pundra relative to other currencies.

so "would" make option D may happen, so D is less effective at weakening the proposal.