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分享几道做错的逻辑题(来自Manhatta)

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发表于 2010-9-12 00:18:38 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
1.In January of last year, Fastfood King started using a new lowfat oil to cook its Fast Fries, instead of the less healthful corn oil that it had been using. Now Fastfood King is planning to switch back, saying that the change has hurt sales of Fast Fries. However, this claim is incorrect, since according to Fastfood King’s own sales figures, Fastfood King sold 10 percent more Fast Fries last year than in the previous year.

Which of the following, if true, most strongly supports the argument against Fastfood King's claim?

Total sales of all foods at Fastfood King’s locations increased by less than 10 percent last year.

Fastfood King enjoys higher profit margins on its Soft Drinks than it does on Fast Fries.

Fastfood King’s customers prefer the taste of Fast Fries cooked in corn oil to Fast Fries cooked in lowfat oil.

The number of customers that visited Fastfood King locations was more than 20 percent higher last year than the year before.

The year before last, Fastfood King experienced a 20 percent increase in Fast Fries sales over the previous year.







答案:A
一开始真不会去考虑A,感觉是无关项

2.
Two years ago, the cost of the raw material used in a particular product doubled after an earthquake disrupted production in the region where the material is mined.  Since that time, the company that makes the product has seen its profit margins decline steadily.  Aiming to improve profit margins, the company's head of engineering has decided that he must find a new source for the raw material.

Which of the following, if true, would cast the most doubt on the validity of the head of engineering's decision?

New competitors have entered the market every six months for the past two years, resulting in price wars that have progressively driven down revenues across the market.

Although the earthquake occurred two years ago, the region's mines have still not recovered to pre-earthquake production capacity.

There are several other regions in the world where the raw material is mined, but those regions do not produce as much of the raw material as the current source region.

The company could use a completely different raw material to make its product.

Recent advances in mining technology will make mining the raw material much more efficient and cost-effective in the future.








答案:A
跟上一题类似,A感觉像无关项,E更靠谱,结果解释说:E没有给出准确的时间,而且就算成本降低了,卖给company的价格也未必会降低

3.
Educator: Like many other difficult pursuits, music requires intense study and practice from an early age in order for one to become proficient. But many school music programs encourage only children who demonstrate early aptitude to continue studying music, while children who do not appear especially musical are directed towards other activities. Having learned to think of themselves as musically inept, these children do not devote any time to music, and thus some of them deprive themselves of the opportunity to develop latent but potentially significant musical talent.

The educator's statements, if true, would best support which of the following conclusions?

Music education should not devote special attention to talented students.

Everyone has the potential to learn music.

The number of proficient adult musicians is less than it could be.

Children are particularly sensitive to criticism from adults.

All children should study music.






答案:C
误选了A


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