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lsat 2 (1.2) questions

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楼主
发表于 2003-6-7 18:48:00 | 只看该作者

lsat 2 (1.2) questions

[face=Georgia]15. A well-known sports figure found that combining publicity tours with playing tours led to problems, so she stopped combining the two. She no longer allows bookstore appearances and playing in competition to occur in the same city within the same trip. This week she is traveling to London to play in a major competition, so during her stay in London she will not be making any publicity appearances at any bookstore in London.

Which one of the following most closely parallels the reasoning used in the passage?

(A) Wherever there is an Acme Bugkiller, many wasps are killed. The Z family garden has an Acme Bugkiller, so any wasps remaining in the garden will soon be killed.

(B) The only times that the hospital’s emergency room staff attends to relatively less serious emergencies are times when there is no critical emergency to attend to. On Monday night the emergency room staff attended to a series of fairly minor emergencies, so there must not have been any critical emergencies to take care of at the time.

(C) Tomato plants require hot summers to thrive. Farms in the cool summers of country Y probably do not have thriving tomato plants.

(D) Higher grades lead to better job opportunities, and studying leads to higher grades. Therefore, studying will lead to better job opportunities.

(E) Butter knives are not sharp. Q was not murdered with a sharp blade, so suspect X’s butter knife may have been the murder weapon.

这个题目题目的确读懂了,但是我提取不了什么信息作题?
答案选B



20. All savings accounts are interest-bearing accounts. The interest from some interest-bearing accounts is tax-free., so there must be some savings accounts that have tax-free interest.

Which one of the following arguments is flawed in a way most similar to the way in which the passage is flawed?

(A) All artists are intellectuals. Some great photographers are artists. Therefore, some great photographers must be intellectuals.

(B) All great photographers are artists. All artists are intellectuals. Therefore, some great photographers must be intellectuals.

(C) All great photographers are artists. Some artists are intellectuals. therefore, some great photographers are intellectuals.

(D) All great photographers are artists. Some great photographers are intellectuals. Therefore, some artists must be intellectuals.

(E) All great photographers are artists. No artists are intellectuals. Therefore, some great photographers must not be intellectuals.

这个题目从原文归纳了什么逻辑错误去作题目呢?答案选C


Despite improvements in treatment for asthma, the death rate form this disease has doubled during the past decade from its previous rate. Two possible explanations for this increase have been offered. First, the recording of deaths due to asthma has become more widespread and accurate in the past decade than it had been previously. Second, there has been an increase in urban pollution. However, since the rate of deaths due to asthma has increased dramatically even in cities with long-standing, comprehensive medical records and with little or no urban pollution, one must instead conclude that the cause of increased deaths is the use of bronchial inhalers by asthma sufferers to relieve their symptoms.

23. Which one of the following is an assumption on which the argument depends?

(A) Urban pollution has not doubled in the past decade.

(B) Doctors and patients generally ignore the role of allergies in asthma.

(C) Bronchial inhalers are unsafe, even when used according to the recommended instructions.

(D) The use of bronchial inhalers aggravates other diseases that frequently occur among asthma sufferers and that often lead to fatal outcomes even when the asthma itself does not.

(E) Increased urban pollution, improved recording of asthma deaths, and the use of bronchial inhalers are the only possible explanations of the increased death rate due to asthma.

这个题目只有选E!但是这个argument的结论好象不明显.[/face]
沙发
发表于 2003-6-7 20:42:00 | 只看该作者
1,就是归纳以后再做出推理或者是演绎

2,主要的问题就是混淆了必要条件和充分条件,或者说是充分性不足的情况下的出结论

3,没有读到E之前,我认为D是相关的,但E确实合理的解释出文章可以直接得出这个结论的原因,即12不成,那一定是3了,可见3一定原本就是原因之一
板凳
 楼主| 发表于 2003-6-8 08:22:00 | 只看该作者
谢谢cranberry 的讲解,但是前两个题目还是有些模糊。请讲解。

另外,象20题中的“interest-bearing accounts”这种词有时不知道是什么意思,这种词汇能力如何提高。
地板
 楼主| 发表于 2003-6-8 17:17:00 | 只看该作者
ding,逻辑牛牛们过来看看
5#
 楼主| 发表于 2003-6-13 19:16:00 | 只看该作者
再ding
6#
发表于 2003-6-13 19:33:00 | 只看该作者
第3题是典型的排除他因的假设。
7#
 楼主| 发表于 2003-6-13 22:35:00 | 只看该作者
逻辑高手再看看前两个题目:另外,象20题中的“interest-bearing accounts”这种词有时不知道是什么意思,这种词汇能力如何提高。
8#
发表于 2003-6-14 13:03:00 | 只看该作者
第一题(2):逻辑类似题
原文推理:publicity tours 与playing tours 不能共存-->有playing tours 时,没有publicity tours(A与B不能共存,所有B时无A)

B选项:有hospital’s emergency room staff attends to relatively less serious emergencies (A)时就无critical emergency to attend to(B)-->周一晚上有A,那天晚上必无B

第二题(20):
interest-bearing account:组合词,负担利息的,带利息的帐户。其实在逻辑题中象这种词不一定非要理解才能做题,记住其是元素某某就可以了。
原文推理:
因为:savings accounts (A)--> interest-bearing account(B);
   SOME interest-bearing account(SOME B) --> tax free(C)
所以:SOME A--> C

选项C:
因为:great photographers(A) -->artists(B);  
   SOME artists(SOME B) -->intellectuals(C)
所以:SOME A -->C




9#
发表于 2003-6-18 20:07:00 | 只看该作者
interest-bearing account存钱给利息,但是这种acount的利息一般是要收税,等同于income tax的一部分

还有一种account存钱事不给利息的,或者利息极低,这种account 因为没有利息,所以不受税。
10#
发表于 2004-11-11 14:47:00 | 只看该作者
23题选项D和E,选E而不选D是不是又是充分必要性的问题呀?D是充分的,E是必要的,那我们选这种题时是不是就选必要的那个?不知道这样想对不对。
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