用下面的方法来备考和练习GMAT逻辑题目是不错的方法，下面先为大家说了一下练习的方法和基本要求，然后大家可以在规定的要求内完成下面的例题，赶快来检测一下自己吧。
【练习示例】
1) 计时：30s
2) 逻辑链Situation(刚开始练习先写好完整逻辑链，练习到逻辑链基本清晰的时候尝试尽量简化信息、提炼最精简的逻辑链)：
*完整模式：
Background Information:
Life expectancy is the average age at death of the whole population.
Premise:
Life expectancy in mid-nineteenth century North America was 40 years; now it is almost 80.
Conclusion:
What we think of as the prime of life must have been considered old in that earlier era.
简化模式：
Life expectancy in earlier era was 40 years, but now is almost 80.
Thus, what we consider young must have been considered old in that earlier era.
3) 推测(Prephrase: mentally formulate your answer to the question stem)：
the average age at death is 40 years≠the usual length of life is around 40
some other reasons that lead to the outcome:
极端值大, first-year infant mortality was extremely high in earlier era.
4) 选项分析：选B
*选项解释不提供固定思路，请根据自己的理解对每一错误选项给出错误原因和类型的解释(无关选项思考清楚为什么无关)，对正确选项分析其与题干逻辑链的关系。
【逻辑链题练习要求】
1. 计时看问题和题干，一般在45s内。
2. 先不看选项、不看题干按自己的理解写出逻辑链。
3. 合理推测正确选项的可能方向(请发挥你丰富的想象力和推测力)
Background Information:
Premise:
Conclusion:
11.03
1. Psychiatrist: Take any visceral emotion you care to consider. There are always situations in which it
is healthy to try to express that emotion. So, there are always situations in which it is
healthy to try to express one’s anger.
The conclusion of the argument follows logically if which one of the following is assumed?
B: Healthy to try to express one’s visceral emotion
C: Healthy to …express anger
P: anger=emotion care to
(A) Anger is always expressible.
(B) Anger is a visceral emotion.
(C) Some kinds of emotions are unhealthy to express.
(D) All emotions that are healthy to express are visceral.
(E) An emotion is visceral only if it is healthy to express.
【PREP练习】
45. (33087-!-item-!-188;#058&007558)
The recent decline in the value of the dollar was triggered by a prediction of slower economic growth in the coming year. But that prediction would not have adversely affected the dollar had it not been for the government's huge budget deficit, which must therefore be decreased to prevent future currency declines.
Which of the following, if true, would most seriously weaken the conclusion about how to prevent future currency declines?
B: prediction of slower economic growth lead to decline in the value of the $,
C: prediction would not have adversely affected for the government budget
Weaken_
In the material the author said that the decline in the value of the $ would not lead to the declines of the government budget. What is the relationship between the value of the $ and the government budget? The declining value of $ also means a declining value of the government budget. As a result the government should increase its budget if it want to buy the same thing as the budget before the value of $ declined. That will be the adversely affected for the government budget.
(A)The government has made little attempt to reduce the budget deficit.(s)
(B) The budget deficit has not caused a slowdown in economic growth.(s)
(C) The value of the dollar declined several times in the year prior to the recent prediction of slower economic growth.
(D) Before there was a large budget deficit, predictions of slower economic growth frequently caused declines in the dollar's value.(他因weaken，说明货币贬值在财政赤字之前;货币贬值由于经济预期引起。)
(E) When there is a large budget deficit, other events in addition to predictions of slower economic growth sometimes trigger declines in currency value.(irrelative)
46. (33135-!-item-!-188;#058&007559)
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
B：Standard of living & balanced trade simultaneously
P：trade deficits↑lead to Standards of living↑
Living↓ lead to trade balance(converse 取反)
C：trade deficits↑→ Standard of living↑→trade balance↑
(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
47. (33183-!-item-!-188;#058&007560)
Traditionally, decision-making by managers that is reasoned step-by-step has been considered preferable to intuitive decision-making. However, a recent study found that top managers used intuition significantly more than did most middle- or lower-level managers. This confirms the alternative view that intuition is actually more effective than careful, methodical reasoning.
The conclusion above is based on which of the following assumptions?
B：step by step decision-making is better than intuitive decision-making
P: top managers used intuition more than did most middle/lower-level managers
C:intuition is more effective than careful, methodical reasoning
In the argument it is show that while common people think that step by step decision-making is much effecter than intuitive decision-making, a study showed that top managers used intuitive decision more than the lower/ middle-level managers. Finally, the author said that the intuitive decision is much effecter than the careful, methodical reasoning.
As the situation that was showed above, how can the author assumed that the intuitive decision is effecter than the careful, methodical one? Who make the intuitive decision? In order to make this conclusion, we should assure whether the fact that the top managers’ decision is more effective.
(A)Methodical, step-by-step reasoning is inappropriate for making many real-life management decisions.
(B) Top managers have the ability to use either intuitive reasoning or methodical, step-by-step reasoning in making decisions.
(C) The decisions made by middle- and lower-level managers can be made as easily by using methodical reasoning as by using intuitive reasoning.
(D) Top managers use intuitive reasoning in making the majority of their decisions.
(E) Top managers are more effective at decision-making than middle- or lower-level managers.
48. (33231-!-item-!-188;#058&007563)
Certain messenger molecules fight damage to the lungs from noxious air by telling the muscle cells encircling the lungs' airways to contract. This partially seals off the lungs. An asthma attack occurs when the messenger molecules are activated unnecessarily, in response to harmless things like pollen or household dust.
Which of the following, if true, points to the most serious flaw of a plan to develop a medication that would prevent asthma attacks by blocking receipt of any messages sent by the messenger molecules referred to above?
B：certain messenger molecules tells the muscle cells encircling the lungs’ airways to contract some damage
Asthma occurs then the molecules response to harmless things such as pollen or household dust, however the message was not necessary.
Method: block receipt of any message sent by the messenger molecules to prevent asthma attacks
Weaken?
In the message some people plan to prevent asthma attacks by stop the messages which was sent by some messenger to the lungs that will cause the asthma. More ever, the molecules cannot distinguish whether the messenger was necessary.
What will lead if the messenger was stop? Some necessary messenger will not sent to the lung cell anymore, as a result it cannot encircle to contract the harmless factor, that will be bad.
(A) Researchers do not yet know how the body produces the messenger molecules that trigger asthma attacks.
(B) Researchers do not yet know what makes one person's messenger molecules more easily activated than another's.
(C) Such a medication would not become available for several years, because of long lead times in both development and manufacture.
(D) Such a medication would be unable to distinguish between messages triggered by pollen and household dust and messages triggered by noxious air.
(E) Such a medication would be a preventative only and would be unable to alleviate an asthma attack once it had started.
11.04(2-1)eead
【精练】StrengthenX question的做题思路：irrelevant or weaken!!!
2. Statistician: A financial magazine claimed that its survey of its subscribers showed that North Americans are more concerned about their personal finances than about politics. One question was: “Which do you think about more: politics or the joy of earning money?” This question is clearly biased. Also, the readers of the magazine are a self-selecting sample. Thus, there is reason to be skeptical about the conclusion drawn in the magazine’s survey.
Each of the following, if true, would strengthen the statistician’s argument EXCEPT:
B：a survey said that North Americans concerned their personal finances more than politics
P:the survey is skeptical(怀疑), because the readers of the magazine which make the survey are self-selecting.
Weaken the conclusion that the survey has given.
In the argument the statistician claim that the North Americans are prefer their personal finances to politics. The conclusion what he made based on the survey what the financial had made. However, the survey is problematic in some respect. (1) the readers of the magazine are self-selecting, because they are all the consumer of a financial magazine. They surely pay more attention about the financial problems than any other people who do not read the magazine. (2) is the sample in the survey large enough for a objective fact? (3) Also if the readers change their mind frequently, the conclusion of the survey might change, too.
(A)The credibility of the magazine has been called into question on a number of occasions.
(B) The conclusions drawn in most magazine surveys have eventually been disproved.
(C) Other surveys suggest that North Americans are just as concerned about politics as they are about finances.
(D) There is reason to be skeptical about the results of surveys that are biased and unrepresentative.
(E) Other surveys suggest that North Americans are concerned not only with politics and finances, but also with social issues.(irrelevant)。
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