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[逻辑小分队] 【每日逻辑练习第二季】【2-13】

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11#
发表于 2011-12-31 09:50:53 | 只看该作者
Premise:Vague laws set vague limits on people’s freedom,which makes it impossible for them to know for certain whether their actions are legal
Conclusion:under vague laws people cannot feel secure.
(A) People can feel secure only if they know for
certain whether their actions are legal.
------------------------------------------------------------correct
(B) If people do not know for certain whether their
actions are legal, then they might not feel
secure.
(C) If people know for certain whether their actions
are legal, they can feel secure.
(D) People can feel secure if they are governed by
laws that are not vague.
(E) Only people who feel secure can know for
certain whether their actions are legal.
Background:Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent.
Premise:more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.
Conclusion:combat this problem


A) The major causes of delays at the nation's busiest airports are bad weather and overtaxed air traffic control equipment.
(B) Since airline deregulation began, the number of airplanes in operation has increased by 25 percent.
(C) Over 60 percent of the takeoff and landing slots at the nation's busiest airports are reserved for commercial airlines.
---------------------------------------------------------------------------correct
(D) After a small midwestern airport doubled its allocation of takeoff and landing slots, the number of delays that were reported decreased by 50 percent.
(E) Since deregulation the average length of delay at the nation's busiest airports has doubled.
Conclusion:The proposal to hire ten new police officers in Middletown is quite foolish
Premise: There is sufficient funding to pay the salaries of the new officers, but not the salaries of additional court and prison employees to process the increased caseload of arrests and convictions that new officers usually generate.
(A) Studies have shown that an increase in a city's police force does not necessarily reduce crime.
(B) When one major city increased its police force by 19 percent last year, there were 40 percent more arrests and 13 percent more convictions.
(C) If funding for the new police officers' salaries is approved, support for other city services will have to be reduced during the next fiscal year.
(D) In most United States cities, not all arrests result in convictions, and not all convictions result in prison terms.
(E) Middletown's ratio of police officers to citizens has reached a level at which an increase in the number of officers will have a deterrent effect on crime.
-------------------------------------------------------------------------------------------------------correct
Background:Bank depositors in the United States are all financially protected against bank failure because the government insures all individuals' bank deposits
Conclusion: An economist argues that this insurance is partly responsible for the high rate of bank failures, since it removes from depositors any financial incentive to find out whether the bank that holds their money is secure against failure.  If depositors were more selective, then banks would need to be secure in order to compete for depositors' money
(A) Before the government started to insure depositors against bank failure, there was a lower rate of bank failure than there is now.
(B) When the government did not insure deposits, frequent bank failures occurred as a result of depositors' fears of losing money in bank failures.
(C) Surveys show that a significant proportion of depositors are aware that their deposits are insured by the government.
(D) There is an upper limit on the amount of an individual's deposit that the government will insure, but very few individuals' deposits exceed this limit.
(E) The security of a bank against failure depends on the percentage of its assets that are loaned out and also on how much risk its loans involve.
----------------------------------------------------------------------------------------------------correct

(A) Countries with large national budget deficits tend to restrict foreign trade.
(B) Reliable comparisons of the deficit figures of one country with those of another are impossible.
(C) Reducing a country's national budget deficit will not necessarily result in a lowering of any trade deficit that country may have.
------------------------------------------------------------------------correct
(D) When countries are ordered from largest to smallest in terms of population, the smallest countries generally have the smallest budget and trade deficits.
(E) Countries with the largest trade deficits never have similarly large national budget deficits.
12#
发表于 2012-1-4 23:06:20 | 只看该作者
先做两道吧,今天的任务完不成了啊~~

4. Vague laws set vague limits on people’s freedom,
which makes it impossible for them to know for
certain whether their actions are legal. Thus, under
vague laws people cannot feel secure.
The conclusion follows logically if which one of the
following is assumed?

Premise:Vague laws set vague limits on people’s freedom,
Premise:Vague laws is impossible for people to know whether their actions are legal

Conclusion: people cannot feel secure under vague laws.
Prephrase:vague limits on freedom—uncertain to know whether legal—??cannot fell secure

A) People can feel secure only if they know for
certain whether their actions are legal.
补全了gap,应该正确
only if 排除了其他各种可能

(B) If people do not know for certain whether their
actions are legal, then they might not feel
secure.
The word might makes the "feel secure" uncertain

(C) If people know for certain whether their actions
are legal, they can feel secure.
没说if people do not know for certain是不是还觉得feel secure

(D) People can feel secure if they are governed by
laws that are not vague.
无关了,扯远了

(E) Only people who feel secure can know for
certain whether their actions are legal.
颠倒了顺序
                   

57.
Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent.  To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.

Which of the following, if true, casts the most doubt on the effectiveness of the solution proposed above?

Pelays increased due to deregulation of arelines
P:takeoff and landing slots at the businest airport must be allocated to commerical
Prephrase:delays—?commerical airlines
Does commericla airlines will not deregulate?

(A) The major causes of delays at the nation's busiest airports are bad weather and overtaxed air traffic control equipment.正确,因为deregulation是有这种不可避免的原因的,所以这种情况下即便是换成commerical的也没有用
(B) Since airline deregulation began, the number of airplanes in operation has increased by 25 percent.
so what?
(C) Over 60 percent of the takeoff and landing slots at the nation's busiest airports are reserved for commercial airlines.
无关
(D) After a small midwestern airport doubled its allocation of takeoff and landing slots, the number of delays that were reported decreased by 50 percent.跟其他无关
(E) Since deregulation the average length of delay at the nation's busiest airports has doubled.
so??
13#
发表于 2012-5-2 22:25:46 | 只看该作者
147
Vague laws set vague limits on people’s freedom, which makes it impossible for them to know for certain whether their actions are legal. Thus, under vague laws people cannot feel secure.
The conclusion follows logically if which one of the following is assumed?
(A) People can feel secure only if they know for certain whether their actions are legal.
(B) If people do not know for certain whether their actions are legal, then they might not feel secure.
(C) If people know for certain whether their actions are legal, they can feel secure.
(D) People can feel secure if they are governed by laws that are not vague.
(E) Only people who feel secure can know for certain whether their actions are legal.
背景:Vague laws set vague limits on people’s freedom
条件:Vague laws make it impossible for them to know for certain whether their actions are legal
结论:Under vague laws, people feel unsecure.
推测:vague laws是否保护了people?
选B


148
背景:The deregulation of airlines, delays at the nation’s increasingly busy airports have increased by 25%.
条件:To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.
结论:Work or un-work?
推测:分配给commercial airline之后仍然会如此,真正的原因不是这个
选A


149
背景:There is sufficient funding to pay the salaries of the new officers
条件:Not the salaries of additional court and prison employees to process the increased caseload of arrests and convictions that new officers generate.
结论:The proposal to hire 10 new police officers in Middletown is quite foolish
推测:聘请了这10个新的,能够处理更多的案件或者更有效率?
选E


150
背景:Bank depositors in the US are all protected against bank failure because the government insures all individuals’ bank deposits.
条件:This insurance is partly responsible for the high rate of bank failures
结论:If depositors were more selective, then banks would need to be secure in order to compete for depositors’ money.
推测:如果depositor不懂得分辨呢?
选B


151
背景:Large national budget deficits do not cause large trade deficits.
条件:If they did, countries with largest budget deficits would also have the largest trade deficits.
结论:In fact, when deficits figures are adjusted so that different countries are reliably comparable to each other, there is no such correlation.
推测:之间没有关系?
选C
14#
发表于 2012-7-3 17:45:12 | 只看该作者
1 17"  premise: under vague laws ,people don't know whether their action is legal
       conclusion:  under vague laws, peopel feel unsecure
       assumption:  people don't know whether their action is legal= people will feel unsecure
        answer: A
------------------------------------------
2 37"  premise: to reduce delay at busy airports, allocate takeoff and landing from busy airline to commercial airline
          weaken the effect?
        answer: A  the reason of delay is not caused by airline congestion
----------------------------------------------
3 19" premise: although G have enough fund to afford increase salary <--------increase 10 officers
       G can not afford additional salary of court and prison officers<------ increased arrest and conviction <----increased officers
         conclusion:increas in officers in foolish
         weaken?  increase 10 officers does not means increased arrest and conviction
         answer:E
-------------------------------------------------
4 29" premise: people pay more attention to the security of bank ------> banks will become more secure
          conclusion: the goverment' insurance to bank is the reason of high rete of bank failure
         weaken? the banks also have other methods to attract costumers ;
                       customers can not detect which bank is secure
           answer? B
-----------------------------------------------------
5  37" conclusion: budget deficit =/----> deficit trade
          premise : budget deficit data is adjusted ,so different countries have the same level
         infer?  C
15#
发表于 2012-7-4 22:45:15 | 只看该作者
【精练】
4. 32s

PremiseVague laws set vague limits on people’s freedom, which makes it impossible for them to know for certain whether their actions are legal.

conclusion under vague laws people cannot feel secure.
prephrase
:(assume

answerB-------A

(A) People can feel secure only if they know for
certain whether their actions are legal.------------only if
限制了范围。---------correct
(B) If people do not know for certain whether their
actions are legal, then they might not feel
secure.----------correct------------this answer uses “might not”, but the conclusion in the argument uses “cannot”, so this is incorrect.
(C) If people know for certain whether their actions
are legal, they can feel secure.------------the argument did not discuss “if people know…”--------C
虽然意思上和A一样,但是假设题要求找一个必要条件,而C明显无法充当必要条件!!!
(D) People can feel secure if they are governed by
laws that are not vague.------------this only support the conclusion
(E) Only people who feel secure can know for
certain whether their actions are legal.------------only
限制了范围--------颠倒了箭头的推理方向

分析:

premise: vague lawsvague limitknow actions are legal


Conclusion: vague lawssecure

Prephrase: know actions are legalsecure

【逻辑链】
57.24s
premise
Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent.

ConclusionTo combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.
prephrase
:(weakenbad weather leads to delay

AnswerA

58. 26s
Premise
There is sufficient funding to pay the salaries of the new officers, but not the salaries of additional court and prison employees to process the increased caseload of arrests and convictions that new officers usually generate.

ConclusionThe proposal to hire ten new police officers in Middletown is quite foolish.
prephrase
:(weakenhire new police officers can decrease the rate of arrests and convictions.

AnswerE


59. 38s
background information:Bank depositors in the United States are all financially protected against bank failure because the government insures all individuals' bank deposits.  

Premise:An economist argues that this insurance is partly responsible for the high rate of bank failures, since it removes from depositors any financial incentive to find out whether the bank that holds their money is secure against failure.  

Conclusion: If depositors were more selective, then banks would need to be secure in order to compete for depositors' money.

Prephrase: (weaken) bank failure due to depositors afraid to lose money.

Answer:B

60. 35S
background informationarge national budget deficits do not cause large trade deficits.  

Premise: If they did, countries with the largest budget deficits would also have the largest trade deficits.  In fact, when deficit figures are adjusted so that different countries are reliably comparable to each other, there is no such correlation.
prephrase: (conclude)

Answer:C

16#
发表于 2012-11-4 21:35:56 | 只看该作者
1.    16s
P: Vague laws set vague limits on people’s freedom, which makes it impossible for them to know for certain whether their actions are legal.
C: Thus, under vague laws people cannot feel secure.
Assume: do not know whether actions are legal make people feel secure
C correct要通过“知道action are legal,则feel secure”或者其同义句连接前提和结论。
正确答案:A,漏掉的逻辑链条是“不知道legal就不feel secure”即只有知道legal才feel secure” 总觉得AC是一个意思。。。求解。。。

2.    31s
P: Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent.  
C: To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.
Waken: commercial airlines 会有更多或者不变的delays
A correct 它因削弱bad weather and overtaxed air traffic control equipment, 换机场也不能解决问题

3.    25s
P: There is sufficient funding to pay the salaries of the new officers, but not the salaries of additional court and prison employees to process the increased caseload of arrests and convictions that new officers usually generate.
C: The proposal to hire ten new police officers in Middletown is quite foolish.  
Weaken: old court and prison employees够用了,不用聘请另外的
D correct 因为arrest, conviction, prison terms不一定增加,所以不一定需要新增court and prison employees
正确答案:E,增加officer能够减少crime

4.    42s
Background: Bank depositors in the United States are all financially protected against bank failure because the government insures all individuals' bank deposits.  
P: An economist argues that this insurance is partly responsible for the high rate of bank failures, since it removes from depositors any financial incentive to find out whether the bank that holds their money is secure against failure.  
C: If depositors were more selective, then banks would need to be secure in order to compete for depositors' money.
Weaken: 不知道。。。
也许D correct, 不确定。。。因为众多人没达到政府insurance的下限,所以不会有影响,所以削弱~
正确答案:B 政府没有insure的时候,银行常因为储户担心failure取走money而failure…不明白。。。求解释

5.    45s
P: Large national budget deficits do not cause large trade deficits.  If they did, countries with the largest budget deficits would also have the largest trade deficits.  In fact, when deficit figures are adjusted so that different countries are reliably comparable to each other,
C: there is no such correlation.
Infer: 可以不用管Large national budget deficits
C correct 前者不一定产生后者
17#
发表于 2012-11-5 13:32:16 | 只看该作者

11.04+【2-13】

回归了,一定好好做题。
1. Vague laws set vague limits on people’s freedom, which makes it impossible for them to know for certain whether their actions are legal. Thus, under vague laws people cannot feel secure.
The conclusion follows logically if which one of the following is assumed?
(A) People can feel secure only if they know for certain whether their actions are legal.
(B) If people do not know for certain whether their actions are legal, then they might not feel secure.(
might not)
(C) If people know for certain whether their actions are legal, they can feel secure.
(是没有only吗)
(D) People can feel secure if they are governed by laws that are not vague.
(E) Only people who feel secure can know for certain whether their actions are legal.

Premise:
Vague laws set vague limits on people’s freedom.
Premise:
Vague laws set vague limits on people’s freedom, which makes it impossible for them to know for certain whether their actions are legal.

Conclusion:
Thus, under vague laws people cannot feel secure.

选项分析:A



2. Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent. To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.
Which of the following, if true, casts the most doubt on the effectiveness of the solution proposed above?
(A) The major causes of delays at the nation's busiest airports are bad weather and overtaxed air traffic control equipment.
(B) Since airline deregulation began, the number of airplanes in operation has increased by 25 percent.
(C) Over 60 percent of the takeoff and landing slots at the nation's busiest airports are reserved for commercial airlines.
(D) After a small midwestern airport doubled its allocation of takeoff and landing slots, the number of delays that were reported decreased by 50 percent.
(E) Since deregulation the average length of delay at the nation's busiest airports has doubled.

Background Information:
Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent.

Conclusion:
To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.

Premise:

The increased delays were not in commercial airlines, the commercial airlines are rarely delayed.

推测(Prephrase: mentally formulate your answer to the question stem)

The increased delays might be due to objective factors, which have no connects with the commercial airlines.
选项分析:A



3. The proposal to hire ten new police officers in Middletown is quite foolish. There is sufficient funding to pay the salaries of the new officers, but not the salaries of additional court and prison employees to process the increased caseload of arrests and convictions that new officers usually generate.
Which of the following, if true, will most seriously weaken the conclusion drawn above?
(A) Studies have shown that an increase in a city's police force does not necessarily reduce crime.
(B) When one major city increased its police force by 19 percent last year, there were 40 percent more arrests and 13 percent more convictions.
(C) If funding for the new police officers' salaries is approved, support for other city services will have to be reduced during the next fiscal year.
(D) In most United States cities, not all arrests result in convictions, and not all convictions result in prison terms.
(E) Middletown's ratio of police officers to citizens has reached a level at which an increase in the number of officers will have a deterrent effect on crime.

Premise:
There is sufficient funding to pay the salaries of the new officers.

Premise:

There is not sufficient funding to pay the salaries of additional court and prison employees to process the increased caseload of arrests and convictions that new officers usually generate.
Conclusion:
The proposal to hire ten new police officers in Middletown is quite foolish.

推测(Prephrase: mentally formulate your answer to the question stem)

The increase in the number of officers will reduce the number of crimes.
选项分析:D



4. Bank depositors in the United States are all financially protected against bank failure because the government insures all individuals' bank deposits. An economist argues that this insurance is partly responsible for the high rate of bank failures, since it removes from depositors any financial incentive to find out whether the bank that holds their money is secure against failure. If depositors were more selective, then banks would need to be secure in order to compete for depositors' money.
Which of the following, if true, most seriously weakens the economist's argument?
(A) Before the government started to insure depositors against bank failure, there was a lower rate of bank failure than there is now.
(B) When the government did not insure deposits, frequent bank failures occurred as a result of depositors' fears of losing money in bank failures.
(C) Surveys show that a significant proportion of depositors are aware that their deposits are insured by the government.
(D) There is an upper limit on the amount of an individual's deposit that the government will insure, but very few individuals' deposits exceed this limit.
(E) The security of a bank against failure depends on the percentage of its assets that are loaned out and also on how much risk its loans involve.

Background Information:
Bank depositors in the United States are all financially protected against bank failure because the government insures all individuals' bank deposits.
Premise:
An economist argues that this insurance is partly responsible for the high rate of bank failures, since it removes from depositors any financial incentive to find out whether the bank that holds their money is secure against failure.
Conclusion:

If depositors were more selective, then banks would need to be secure in order to compete for depositors' money.

推测(Prephrase: mentally formulate your answer to the question stem)

If the insurance for deposits has not been implemented, the frequent bank failures still occurred due to the depositors' fears of losing money.

选项分析:B



5. Large national budget deficits do not cause large trade deficits. If they did, countries with the largest budget deficits would also have the largest trade deficits. In fact, when deficit figures are adjusted so that different countries are reliably comparable to each other, there is no such correlation.
If the statements above are all true, which of the following can properly be inferred on the basis of them?
(A) Countries with large national budget deficits tend to restrict foreign trade.
(B) Reliable comparisons of the deficit figures of one country with those of another are impossible.
(C) Reducing a country's national budget deficit will not necessarily result in a lowering of any trade deficit that country may have.
(D) When countries are ordered from largest to smallest in terms of population, the smallest countries generally have the smallest budget and trade deficits.
(E) Countries with the largest trade deficits never have similarly large national budget deficits.

Background Information:

Large national budget deficits do not cause large trade deficits.
Premise:
If they did, countries with the largest budget deficits would also have the largest trade deficits.

Conclusion:
In fact, when deficit figures are adjusted so that different countries are reliably comparable to each other, there is no such correlation.

推测(Prephrase: mentally formulate your answer to the question stem)

There is no correlation between budget deficit and trade deficit.
选项分析:C



18#
发表于 2013-1-22 18:45:50 | 只看该作者
4. Vague laws set vague limits on people’s freedom,
which makes it impossible for them to know for
certain whether their actions are legal. Thus, under
vague laws people cannot feel secure.

The logic leap is that why people cannot feel secure, so the answer should solve the question. Besides, the answer should be relevant to the influence of vague laws. As we know, the first sentence is the influence of vague laws.
The conclusion follows logically if which one of the
following is assumed?

(A) People can feel secure only if they know for
certain whether their actions are legal.

This answer choice points out that the necessary condition of the result that people can feel secure. From the argument, we can know that the necessary is absent because of vague laws, so this answer choice strengthens the conclusion by showing that the vague laws make the necessary absent, and the result that people can feel secure cannot happen. BA
(B) If people do not know for certain whether their
actions are legal, then they might not feel
secure.

“Might not feel” cannot express as strong as the conclusion.
(C) If people know for certain whether their actions
are legal, they can feel secure.

This answer choice reveals that the former is the sufficient condition to the latter. However, the conclusion in the argument requires the necessary.
(D) People can feel secure if they are governed by
laws that are not vague.

Not require this.
(E) Only people who feel secure can know for
certain whether their actions are legal.

This answer choice makes the reverse relationship.

57.
Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent. To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.
Which of the following, if true, casts the most doubt on the effectiveness of the solution proposed above?
(A) The major causes of delays at the nation's busiest airports are bad weather and overtaxed air traffic control equipment.

It seems very tricky, and should be a contender. This answer choice points out another factor contributing to the delays. However, the plan may still be effective.

Since the major causes are not related to the increase in the takeoff and landing slots for commercial airlines, the proposal may not be effective.这是削弱题里面常见的“引入他因”
(B) Since airline deregulation began, the number of airplanes in operation has increased by 25 percent.

This is the result of airline deregulation, having no effect on the plan.

(C) Over 60 percent of the takeoff and landing slots at the nation's busiest airports are reserved for commercial airlines.

In this case, it reveals that even though there are so many slots for commercial airlines, the problem still occurs, thus weakening the conclusion. BA

But is over 60 percent high enough to solve the problem? We do not know!
(D) After a small midwestern airport doubled its allocation of takeoff and landing slots, the number of delays that were reported decreased by 50 percent.

Doubling allocation of of takeoff and landing slots is outside the scope of the argument.
(E) Since deregulation the average length of delay at the nation's busiest airports has doubled.

The result of deregulation is irrelevant.

58.
The proposal to hire ten new police officers in Middletown is quite foolish. There is sufficient funding to pay the salaries of the new officers, but not the salaries of additional court and prison employees to process the increased caseload of arrests and convictions that new officers usually generate.
Which of the following, if true, will most seriously weaken the conclusion drawn above?
(A) Studies have shown that an increase in a city's police force does not necessarily reduce crime.

Actually, it strengthens the argument by showing that an increase in a city’s police force does not necessarily reduce crime.
(B) When one major city increased its police force by 19 percent last year, there were 40 percent more arrests and 13 percent more convictions.

In fact, this answer choice strengthens the argument by showing that there will be more arrests and convictions that need new officers to solve.
(C) If funding for the new police officers' salaries is approved, support for other city services will have to be reduced during the next fiscal year.

Support for other city services is irrelevant.
(D) In most United States cities, not all arrests result in convictions, and not all convictions result in prison terms.

It seems to be contender. However, we are talking about Middletown, which may not be included in the most United Stated cities referred in the answer choice. Thus, this answer choice cannot necessarily weaken the argument.
(E) Middletown's ratio of police officers to citizens has reached a level at which an increase in the number of officers will have a deterrent effect on crime.
In this case, it points out an advantage of the increase in the number of officers, thus weakening the argument. BA


59.
Bank depositors in the United States are all financially protected against bank failure because the government insures all individuals' bank deposits. An economist argues that this insurance is partly responsible for the high rate of bank failures, since it removes from depositors any financial incentive to find out whether the bank that holds their money is secure against failure. If depositors were more selective, then banks would need to be secure in order to compete for depositors' money.

The logic chain of the argument is that government offers insurance for all individual’s bank deposits, as a result, then there is the higher rate of bank failures. So the insurance is the real cause. In order to weaken the argument, we need to prove that the insurance has nothing to do with the rate, or reduces the rate.
Which of the following, if true, most seriously weakens the economist's argument?
(A) Before the government started to insure depositors against bank failure, there was a lower rate of bank failure than there is now.

The answer choice, in fact, strengthens the argument by showing that before the cause is present, the effect is absent.
(B) When the government did not insure deposits, frequent bank failures occurred as a result of depositors' fears of losing money in bank failures.

In this case, the answer choice weakens the argument by showing that the insurance is potentially beneficial to reduce the rate. BA
(C) Surveys show that a significant proportion of depositors are aware that their deposits are insured by the government.

The answer cannot weaken or strengthen the argument.
(D) There is an upper limit on the amount of an individual's deposit that the government will insure, but very few individuals' deposits exceed this limit.

It reveals that most people are insured by the government. But it cannot weaken the argument.
(E) The security of a bank against failure depends on the percentage of its assets that are loaned out and also on how much risk its loans involve.

The factor determine the security of a bank cannot contribute to the argument.

60.
Large national budget deficits do not cause large trade deficits. If they did, countries with the largest budget deficits would also have the largest trade deficits. In fact, when deficit figures are adjusted so that different countries are reliably comparable to each other, there is no such correlation.
If the statements above are all true, which of the following can properly be inferred on the basis of them?
(A) Countries with large national budget deficits tend to restrict foreign trade.

Restricting foreign trade is outside the scope of the argument.
(B) Reliable comparisons of the deficit figures of one country with those of another are impossible.

“Are impossible” cannot be inferred from the argument.
(C) Reducing a country's national budget deficit will not necessarily result in a lowering of any trade deficit that country may have.

It seems to be a contender, but nothing about reducing a country’s national budget deficit has been provided.

The argument does not talk about reducing national budget deficit. However, since national budget deficits are not so closely related to trade deficits, we can make this inferring.
(D) When countries are ordered from largest to smallest in terms of population, the smallest countries generally have the smallest budget and trade deficits.

Population is irrelevant.
(E) Countries with the largest trade deficits never have similarly large national budget deficits.

It can be inferred from the argument, since the argument reveals that ”there is no such correlation”. BA

Please note that “similarly large” is not equal to “largest”. So “never” is wrong.






57.
Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent. To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.
Which of the following, if true, casts the most doubt on the effectiveness of the solution proposed above?
(A) The major causes of delays at the nation's busiest airports are bad weather and overtaxed air traffic control equipment.

It seems very tricky, and should be a contender. This answer choice points out another factor contributing to the delays. However, the plan may still be effective.

Since the major causes are not related to the increase in the takeoff and landing slots for commercial airlines, the proposal may not be effective.这是削弱题里面常见的“引入他因”
(B) Since airline deregulation began, the number of airplanes in operation has increased by 25 percent.

This is the result of airline deregulation, having no effect on the plan.

(C) Over 60 percent of the takeoff and landing slots at the nation's busiest airports are reserved for commercial airlines.

In this case, it reveals that even though there are so many slots for commercial airlines, the problem still occurs, thus weakening the conclusion. BA

But is over 60 percent high enough to solve the problem? We do not know!
(D) After a small midwestern airport doubled its allocation of takeoff and landing slots, the number of delays that were reported decreased by 50 percent.

Doubling allocation of of takeoff and landing slots is outside the scope of the argument.
(E) Since deregulation the average length of delay at the nation's busiest airports has doubled.

The result of deregulation is irrelevant.

58.
The proposal to hire ten new police officers in Middletown is quite foolish. There is sufficient funding to pay the salaries of the new officers, but not the salaries of additional court and prison employees to process the increased caseload of arrests and convictions that new officers usually generate.
Which of the following, if true, will most seriously weaken the conclusion drawn above?
(A) Studies have shown that an increase in a city's police force does not necessarily reduce crime.

Actually, it strengthens the argument by showing that an increase in a city’s police force does not necessarily reduce crime.
(B) When one major city increased its police force by 19 percent last year, there were 40 percent more arrests and 13 percent more convictions.

In fact, this answer choice strengthens the argument by showing that there will be more arrests and convictions that need new officers to solve.
(C) If funding for the new police officers' salaries is approved, support for other city services will have to be reduced during the next fiscal year.

Support for other city services is irrelevant.
(D) In most United States cities, not all arrests result in convictions, and not all convictions result in prison terms.

It seems to be contender. However, we are talking about Middletown, which may not be included in the most United Stated cities referred in the answer choice. Thus, this answer choice cannot necessarily weaken the argument.
(E) Middletown's ratio of police officers to citizens has reached a level at which an increase in the number of officers will have a deterrent effect on crime.
In this case, it points out an advantage of the increase in the number of officers, thus weakening the argument. BA


59.
Bank depositors in the United States are all financially protected against bank failure because the government insures all individuals' bank deposits. An economist argues that this insurance is partly responsible for the high rate of bank failures, since it removes from depositors any financial incentive to find out whether the bank that holds their money is secure against failure. If depositors were more selective, then banks would need to be secure in order to compete for depositors' money.

The logic chain of the argument is that government offers insurance for all individual’s bank deposits, as a result, then there is the higher rate of bank failures. So the insurance is the real cause. In order to weaken the argument, we need to prove that the insurance has nothing to do with the rate, or reduces the rate.
Which of the following, if true, most seriously weakens the economist's argument?
(A) Before the government started to insure depositors against bank failure, there was a lower rate of bank failure than there is now.

The answer choice, in fact, strengthens the argument by showing that before the cause is present, the effect is absent.
(B) When the government did not insure deposits, frequent bank failures occurred as a result of depositors' fears of losing money in bank failures.

In this case, the answer choice weakens the argument by showing that the insurance is potentially beneficial to reduce the rate. BA
(C) Surveys show that a significant proportion of depositors are aware that their deposits are insured by the government.

The answer cannot weaken or strengthen the argument.
(D) There is an upper limit on the amount of an individual's deposit that the government will insure, but very few individuals' deposits exceed this limit.

It reveals that most people are insured by the government. But it cannot weaken the argument.
(E) The security of a bank against failure depends on the percentage of its assets that are loaned out and also on how much risk its loans involve.

The factor determine the security of a bank cannot contribute to the argument.

60.
Large national budget deficits do not cause large trade deficits. If they did, countries with the largest budget deficits would also have the largest trade deficits. In fact, when deficit figures are adjusted so that different countries are reliably comparable to each other, there is no such correlation.
If the statements above are all true, which of the following can properly be inferred on the basis of them?
(A) Countries with large national budget deficits tend to restrict foreign trade.

Restricting foreign trade is outside the scope of the argument.
(B) Reliable comparisons of the deficit figures of one country with those of another are impossible.

“Are impossible” cannot be inferred from the argument.
(C) Reducing a country's national budget deficit will not necessarily result in a lowering of any trade deficit that country may have.

It seems to be a contender, but nothing about reducing a country’s national budget deficit has been provided.

The argument does not talk about reducing national budget deficit. However, since national budget deficits are not so closely related to trade deficits, we can make this inferring.
(D) When countries are ordered from largest to smallest in terms of population, the smallest countries generally have the smallest budget and trade deficits.

Population is irrelevant.
(E) Countries with the largest trade deficits never have similarly large national budget deficits.

It can be inferred from the argument, since the argument reveals that ”there is no such correlation”. BA

Please note that “similarly large” is not equal to “largest”. So “never” is wrong.


19#
发表于 2013-3-9 21:59:24 | 只看该作者
57s
assumption
a
premise: vague laws do not tell people whether they are legal when they are doing sth
conclusion: feel insure under vague law
rephrase: not know right or wrong is insure
1:52s
weaken
e
background: deregulation cause delay
premise: give slot to commercial airlines
conclusion: can resolve delay
rephrase: the mattar is about deregulation
1:58s
weaken
d
premise:more new police will lead to more arrest and more prison
       then much fee for court and conviction,and is not desirable
conclusion: not good to add new polices
rephrase:maybe new police will not lead that much arrest!wrong
2:23s
weaken
b
premise: security is from the depositers if they select the bank more carefulllyu
conclusion: if the government do not secure the deposit,the fall of bank will decrease
rephrase: maybe the bank will also fall without governments' security
1:33s
conclusion
c
conclusion: the national buget deficit may not lead to trade deficit
premise: statistics prove no relations between buget deficit and trade deficit
20#
发表于 2013-5-6 15:51:43 | 只看该作者
Bible 16’  
Vague laws set vague limits on people’s freedom.
Thus, people cannot feel secure.
问Assumption: B
错误原因在 might 换cannot 程度改变 错
正确答案是A 逆否命题
C 和A的区别就在于一个only  C无only 取逆否不能得到全集
D 不应该建立feel secure和 vague laws之间的关系
E 因果关系反了

Prep:
没看懂 为什么增加机位给商务线就能解决延误问题呢?

Weaken: A 他因削弱

还是阅读能力差 伤心
weaken:E
A 加强
B 加强
C 和other city无关
D arrests也会造成additional 的工资成本增加


Weaken B 他因削弱
A 加强
C 加强
D 无关limit
E 无关percentage

infer:C
A budget deficit 和 trade deficit无关
B 相关的
D 无关population
E 不是never 程度错误
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