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[GMAT逻辑] 【SWU】OG12逻辑每日一题   [复制链接]

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    发表于 2010-1-14 13:59:16 |显示全部楼层
    本帖最后由 ShareWithU 于 2011-7-19 17:17 编辑


    每日为你逐题点评OG12,题号顺序按OG12,希望对大家有用。


    1.
    "Life expectancy" is the average age at death of theentire live-born population. In the middle of the nineteenth century, life expectancy in North America was 40 years, whereas now it is nearly 80 years.Thus, in those days, people must have been considered old at an age that we now consider the prime of life.


    Which of the following, if true, undermines the argument above?

    (A)In the middle of the nineteenth century, the population of North America was significantly smaller than it is today.
    (B)Most of the gains in life expectancy in the last 150 years have come from reductions in the number of infants who die in their first year of life.
    (C)Many of the people who live to an advanced age today do so only because of medical technology that was unknown in the nineteenth century.
    (D)The proportion of people who die in their seventies is significantly smaller today than is the proportion of people who die in their eighties.
    (E)More people in the middle of the nineteenth century engaged regularly in vigorous physical activity than do so today.

    OG解释:
    Argument Evaluation
    Situation
    Life expectancy in mid-nineteenth century North America was 40 years; now it is almost
    80. What we think of as the prime of life must have been considered old in that earlier era.
    Reasoning
    What point weakens this argument? The argument is discussing life expectancy over theentire population of those born alive. The argument relies on the idea that if 40 years was
    the average life expectancy, then the usual length of life must have been around
    40. But averages can be misleading. What if, in the nineteenth century, the number of infants born alive but not surviving their first year was far higher than it is today? If this were so, it would significantly reduce the average age at time ofdeath of the population as a whole—but of course that population could have contained many who lived well into their seventies or eighties. Thus, if we add the information that first-year infant mortality was quite high 150 years ago, the conclusion that 40 years was considered old then would be much less well supported.
    A
    The size of the population is irrelevant to the argument.

    B
    Correct.
    Greatly reducing first-year infant mortality will have a
    large impact on the average life expectancy of the population as a whole. That, rather than grown adults living twice as long, is enough to account for a large portion of the doubling in average life expectancy.
    C
    This point supports rather than weakens the argument.

    D
    This point supports the argument.


    版主点评:人均预期寿命是算出来的,出生婴儿的死亡率降低,会直接拉高预期寿命。因此此题属于典型的他因削弱+数学。


    掌握要点:遇到数量变化,多从分子、分母是否有变化角度考虑。

    难度级别::) (没有星星的图标,用笑脸代替)

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    发表于 2010-1-14 23:16:43 |显示全部楼层
    本帖最后由 欣欣向荣 于 2010-1-15 09:32 编辑

    2.    Scientists propose placing seismic stations on the floor of the Pacific Ocean to warn threatened coastal
    communities on the northwestern coast of the United States of approaching tidal waves caused by earthquakes.
    Since forewarned communities could take steps to evacuate, many of the injuries and deaths that would
    otherwise occur could be avoided if the government would implement this proposal.
    The answer to which of the following questions would be most important in determining whether implementing
    the proposal would be likely to achieve the desired result?
    (A)        When was the last time that the coastal communities were threatened by an approaching tidal wave?
    (B)        How far below sea level would the stations be located?
    (0   Would there be enough time after receiving warning of an approaching tidal wave for communities to
    evacuate safely?
    (D)        How soon after a tidal wave hits land is it safe for evacuees to return to their communities?
    (E)        Can the stations be equipped to collect and relay information about phenomena other than tidal waves
    caused by earthquakes?
    OG解释:
    Evaluation of a Plan
    Situation     Scientists plan to place on the floor of the Pacific Ocean seismic stations that can sense
    earthquakes and warn threatened coastal communities when they will be threatened by
    tidal waves. Communities that receive warning that tidal waves are approaching could
    evacuate, and injuries and deaths that the tidal wave would most likely cause could be
    avoided, under this plan.
    Reasoning    What would it be most important to know in determining whether implementing the plan
    will achieve its desired result, preventing injuries and deaths? Communities must actually
    evacuate for the plan to achieve the desired result, and that evacuation must be
    accomplished without itself causing injuries or deaths. For this to happen, the proposed
    seismic stations' warnings must come early enough to enable the communities to perform
    a safe evacuation.
    A    Knowing the last time that coastal communities were threatened by an approaching tidal wave
    might be useful in determining whether the seismic stations are a good use of resources (because
    it might indicate how often tidal waves pose a threat), but it does not help determine whether the
    stations' warnings would lead to evacuations preventing injuries and deaths when a tidal wave
    does hit.
    B    The plan is to install the seismic stations on the floor of the Pacific Ocean. Knowing the floor's
    depth would not help determine whether the seismic stations would help prevent injuries and
    deaths when a tidal wave hits.
    C    Correct. If the answer to this question is yes, it will indicate that the plan is more likely to
    achieve its desired result. If the answer is no, it will show that the plan will not do so.
    D    Knowing when evacuees could safely return to their communities is irrelevant to the desired
    result of the plan as described in the passage.
    E    While it might be useful to know whether the seismic stations could be used to gather data on
    phenomena other than tidal waves, this does not speak to the issue of whether the stations would
    help prevent injuries and deaths caused by tidal waves.
    The correct answer is C.

    版主点评:
    本题题干中信息简化之后就是这样的,如果装了可以发地震预警的观测站,那么当地居民就能及时撤走,因此可以避免许多伤亡。
    问题是,以下哪一个问题的答案对于judge题干中所描述的措施是否有效是有意义的。

    浏览以下选项之后便会发觉。。。。A.B.D.E其实都是无关选项,因此排除,而C选项中受到预警之后是否有时间撤走确实是决定该项措施是否有效的决定因素。所以选C。

    题目难度:。。。在英语意思理解的情况下。。。。零。。。。

    meus pectus pectoris pello pepulli pulsum vobis.

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    本帖最后由 欣欣向荣 于 2010-1-15 10:28 编辑

    3.
    Homeowners aged 40 to 50 are more likely to purchase ice cream and are more likely to purchase it in larger amounts than are members of any other demographic group. The popular belief that teenagers eat more ice cream than adults must, therefore, be false.

    The argument is flawed primarily because the author


    (A)fails to distinguish between purchasing and consuming


    (B)does not supply information about homeowners in age groups other than 40 to 50


    (C)depends on popular belief rather than on documented research findings


    (D)does not specify the precise amount of ice cream purchased by any demographic group


    (E)discusses ice cream rather than more nutritious and healthful foods

    OG解释:


    Argument Evaluation


    Situation
    Adults aged 40 to SO
    buy more ice cream than does any other demographic group (for example, teenagers). Does this mean that adults consume more ice cream than teenagers do?
    Reasoning A flawed assumption underlies the reasoning: the assumption that the buyers of the ice cream are also the eaters of the ice cream. Although the demographic group homeowners aged 40 to
    50
    purchases more ice cream than does any other demographic group, it is quite likely that much of the ice cream purchased by those homeowners is for consumption by family members rather than for exclusive consumption by the purchaser. This leaves open the possibility that teenagers may indeed be the largest consumers of ice cream.


    A Correct. The failure to make this distinction led to the making of the flawed assumption.
    B This is false: The argument tells us (indirectly) that homeowners aged 40 to 50 buy more ice cream than does any other group—which allows us to infer that they buy more than do homeowners aged 30 to 40, for example. But even if the argument had stated such information explicitly, it would not have offered any better support for its conclusion.
    C There is nothing in the argument to suggest that the information given is based on popular belief.
    D Providing precise information about the quantity of ice cream purchased by homeowners aged 40 to 50 would not improve the argument at all.
    E The subject is ice cream, not nutrition, so this point is irrelevant.


    版主点评:

            可怜天下父母心。父母买得多,吃得却少。答案说的就是这个意思。

    把握要点:好好努力,孝敬父母。

    难度级别:这个难度的题目在考试中几乎不可能出现,因为easy级别太高。

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    发表于 2010-1-15 14:36:53 |显示全部楼层
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    我来点名,请Anderuth斑斑做明日(1月16日,周六)点评。

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    发表于 2010-1-15 14:39:18 |显示全部楼层
    本帖最后由 anderuth 于 2010-1-16 12:49 编辑

    4. According to a prediction of the not-so-distant future published in 1940, electricity would revolutionize
    agriculture. Electrodes would be inserted into the soil, and the current between them would kill bugs and weeds
    and make crop plants stronger.
    Which of the following, if true, most strongly indicates that the logic of the prediction above is fl awed?
    (A) In order for farmers to avoid electric shock while working in the fi elds, the current could be turned off at
    such times without diminishing the intended effects.
    (B) If the proposed plan for using electricity were put into practice, farmers would save on chemicals now
    being added to the soil.
    (C) It cannot be taken for granted that the use of electricity is always benefi cial.
    (D) Since weeds are plants, electricity would affect weeds in the same way as it would affect crop plants.
    (E) Because a planting machine would need to avoid coming into contact with the electrodes, new parts for
    planting machines would need to be designed.

    OG解释:

    Evaluation of a Plan
    Situation In 1940, electricity was predicted to revolutionize agriculture. Th is prediction suggested
    that electric current running between electrodes inserted into the soil would kill bugs
    and weeds while encouraging the growth of crop plants.
    Reasoning Which point most suggests that the logic used in formulating the prediction is fl awed? Electricity
    will revolutionize agriculture, it is said, because current can be run through electrodes
    placed in the soil. Th is current will kill bugs and weeds while strengthening plants. But
    how will the current accomplish this feat? More specifi cally, how will it kill one kind of
    plant (weeds) while strengthening another (crop plants)?
    A Th e logic of the prediction has nothing to do with whether the current can be turned on and off ;
    rather, it is concerned with the current itself and its eff ects.
    B Rather than suggesting that the logic of the prediction is fl awed, this serves to support the
    prediction: Farmers’ saving on chemicals would be part of the predicted agricultural revolution.
    C Th e argument does not take for granted that the use of electricity is always benefi cial; it merely
    suggests that it would be of great benefi t to agriculture.
    D Correct. Th is statement properly identifi es a problem with the prediction: It provides no reason
    to believe that the electricity would aff ect crop plants and weeds diff erently.
    E Rather than suggesting that the logic of the prediction is fl awed, this serves to support the
    prediction: Changes in planting machines would be part of the predicted agricultural revolution.
    Th e correct answer is D.

    版主点评:

    我们看这道题的逻辑,提干中给出了这样一个逻辑:
    电流可以杀死小虫子和杂草——庄稼可以长得更好——电力的应用会给农业带来革命性的影响。

    要使得这一逻辑成立,必须能够让上面的两个逻辑链条成立,第一个链条就是电流杀死小虫子和杂草能够使得庄稼长得更好,第二个链条是庄稼长得更好可以证明电力应用给农业带来革命性的影响。

    D选项说,杂草也是作物的一种,电流既然可以杀死杂草,也可能会杀死庄稼。这样就破坏了第一个逻辑链条,削弱了提干的逻辑。

    当然,削弱提干逻辑的可能还有许多,比如说电流杀死了小虫子,但有些小虫子对于庄稼生长有益,这样也削弱了第一个逻辑链条。
    同样,如果用电流杀虫的成本高过农药,那么从成本角度电力也无法应用到农业中,从而削弱了第二个逻辑链条。

    所以,面对逻辑题目的时候,大家可以思考一下提干的逻辑由哪几个链条组成,这样会对于解题很有帮助。

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    发表于 2010-1-16 16:16:43 |显示全部楼层
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    也欢迎网友们来点评,可以自己点自己名哦。
    1、可以在版主基础上继续点评;
    2、可以自己选题点评(没有OG的可以跟我联系)

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    发表于 2010-1-16 17:05:01 |显示全部楼层
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    轮到我点名,请skyzhang做明日(1月17日,周日)的点评。

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    发表于 2010-1-20 19:09:45 |显示全部楼层
    本帖最后由 雨落秋池 于 2010-1-20 19:43 编辑

    6.The amount of time it takes for most of a worker's occupational knowledge and skills to become obsolete has been declining because of the introduction of advanced manufacturing technology(ATM). Given the rate at which ATM is currently being introduced in manufacturing, the average worker's old skills become obsolete and new skills are required within as little as five years.

    Which of the following plans, if feasible, would allow a company to prepare most effectiviely for the rapid obsolescence of skills described above.

    (a)The company will develop a program to offer selected employees the opportunity to receive training six years after  they were orininally hired.

    (b)The company will increase its investment in ATM every year for a period of at least five year.

    (c)The company will periodically survey its employees to determine how the introduction of AMT has affected them.

    (d)Before the introduction of ATM, the company will institute an educational program to inform its employees of the probable consequences of the introduction of ATM.

    (e)The company will ensure that it can offer its employees any training necessary for meeting their job requirements.

    Evaluation of a Plan


    Situation
    Tne introduction of AMT is making workers' occupational skills obsolete within as little
    as five years.

    Reasoning
    Which plan will be most effective in helping the company preparefor the expected rapid
    obsolescence in occupational knowledge and skills?
    It should be clear that some type of
    training or retraining will be involved, since (at least in certain types of industry) it is
    unlikely that any company in that industry can afford to avoid introducing AMT if its
    market competitors are doing so.

    A
    Providing training only to
    selected
    employees and only after their skills have already become
    obsolete is not likely to be an effective response.

    B
    This plan only accelerates the problem and does not address the employees' skills.

    C
    Periodic surveys may provide information to employers but will not be enough to prevent
    employees' skills from becoming obsolete.

    D
    Having knowledge of the consequences does not prevent those consequences; employees' skills
    will still become obsolete.

    E
    Correct.
    This would ensure that all employees have the most current occupational knowledge
    and skills needed for their jobs

    The
    correct answer is E.



    本题的意思是:ATM的引进使得一项技术变得过时的时间缩短了。(比如原来某人掌握一项技能以后,可以靠它吃10年的饭,因为10年内技术都不会过时;但ATM引进后,这项技能可能5年就过时了。)

    问的是,哪种方法可以最有效地使公司应对这种快速的技术更新?

    答案很明显选E:及时给员工提供培训,让他们掌握新技术,适应变化

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    发表于 2010-1-21 09:54:17 |显示全部楼层
    呵呵,欢迎飞鹰斑竹回来,我就点他吧~~:)

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    发表于 2010-1-21 13:47:56 |显示全部楼层
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    本帖最后由 飞鹰 于 2010-1-21 13:52 编辑

    问一下你们都从哪里找来的原题啊??
    我从google上好不容易扫到NO.7

    7. Traverton’s city council wants to minimize the city’s average yearly expenditures on its traffi c signal lights and so
    is considering replacing the incandescent bulbs currently in use with arrays of light-emitting diodes (LEDs) as the
    incandescent bulbs burn out. Compared to incandescent bulbs, LED arrays consume signifi cantly less energy
    and cost no more to purchase. Moreover, the costs associated with the conversion of existing fi xtures so as to
    accept LED arrays would be minimal.
    Which of the following would it be most useful to know in determining whether switching to LED arrays would be
    likely to help minimize Traverton’s yearly maintenance costs?
    (A) Whether the expected service life of LED arrays is at least as long as that of the currently used
    incandescent bulbs
    (B) Whether any cities have switched from incandescent lights in their traffi c signals to lighting elements other
    than LED arrays
    (C) Whether the company from which Traverton currently buys incandescent bulbs for traffi c signals also sells
    LED arrays
    (D) Whether Traverton’s city council plans to increase the number of traffi c signal lights in Traverton
    (E) Whether the crews that currently replace incandescent bulbs in Traverton’s traffi c signals know how to
    convert the existing fi xtures so as to accept LED arrays

    答案是A, 看得懂题目的人就知道怎么回事吧!

    GMAT CR里头这种题很多的,属于典型的题,有的题situation复杂一点,其实还是换汤不换药。

    主要思考方式:

    1.抓住题目的落脚点:换LED后的cost下降。落脚点是cost!无关cost的一概排除!

    2.寻找影响cost的因素:题目中讲了购买成本不会高,使用成本很低, 还有一个因素是使用寿命,如果老要更换,那么成本也就高了。

    其他的选项和成本无关,或者主体不是traffic lighting cost。

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    发表于 2010-1-21 13:50:49 |显示全部楼层
    12# 飞鹰

    一个轮回了,小叮当 重新率先挂甲出马。。。。

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    发表于 2010-1-24 19:51:24 |显示全部楼层
    GMAT
    一定要顶一下,实在太好了!

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    发表于 2010-1-25 22:28:00 |显示全部楼层
    12# 飞鹰  

    一个轮回了,小叮当 重新率先挂甲出马。。。。
    飞鹰 发表于 2010-1-21 13:50

    我才看到。。。我错了。。。。


    8.A report that many apples contain a cancer-causing preservative called Alar apparently had little effect on consumers. Few consumers planned to change their apple-buying habits as a result of the report. Nonetheless, sales of apples in grocery stores fell sharply in March, a month after the report was issued.
    Which of the following, if true, best explains the reason for the apparent discrepancy described above?
    (A)        In March, many grocers removed apples from their shelves in order to demonstrate concern about their customers' health.
    (B)        Because of a growing number of food-safety warnings, consumers in March were indifferent to such warnings.
    (C)      The report was delivered on television and also appeared in newspapers.
    (D)       The report did not mention that any other fruit contains Alar, although the preservative is used on other fruit.
    (E)        Public health officials did not believe that apples posed a health threat because only minute traces of Alar were present in affected apples.

    Argument Construction

    Situation
    Despite a report that Alar, used to preserve many apples, could cause cancer, few

    consumers planned to stop buying apples. However, sales of apples in grocery stores fell
    sharply a month after the report.

    Reasoning
    How can this apparent discrepancy be explained? If consumers did not intend to change

    their buying habits, then some other change must have been responsible for the decline
    in apple sales. If apples were not available to buy in grocery stores, then retail sales would
    obviously fall. The decision of many grocers to remove apples from their shelves in the
    month following the report would explain the decline in retail sales.

    A
    Correct.
    This would be sufficient to explain why sales fell even though consumers did not plan to
    stop buying apples.

    B
    This point explains why consumers did not intend to change their apple-buying habits—but not
    why sales fell.

    C
    How consumers may have heard about the report throws no light on the discrepancy between
    their response and the decline in sales.

    D
    Fruits other than apples are not a part of the discussion.

    E
    The health officials' opinion, if indeed known to consumers, would likely lead to stable apple
    sales—so this point does not explain the decline in apple sales.

    The correct answer is A.


    首先判断这是解释题,解释题说到底就是搭桥题,将逻辑链补充完整。
    题干中的信息为:一份说苹果中有要害物质的报告并没有影响消费者购买苹果,极少数人改变了他们买苹果的习惯,但是三月的苹果销量急剧下降,解释这一现象。A中指出因为销售水果的人为了表示对顾客身体健康的关注而将苹果撤柜,这会直接影响苹果的销量,因此很好地搭建了这一逻辑桥。因此A为正确选项。
    meus pectus pectoris pello pepulli pulsum vobis.

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    发表于 2010-1-27 21:50:10 |显示全部楼层
    (9.           

    9.  In order to reduce the number of items damaged while in transit to customers, packaging consultants recommended that the TrueSave mail-order company increase the amount of packing material so as to fill any empty spaces in its cartons. Accordingly, TrueSave officials instructed the company's packers to use more packing material than before, and the packers zealously acted on these instructions and used as much as they could. Nevertheless, customer reports of damaged items rose somewhat.


    Which of the following, if true, most heips to explain why acting on the consultants' recommendation failed to achieve its goal?

    (A)
    The change in packing policy led to an increase in expenditure on packing material and labor.


    (B)
    When packing material is compressed too densely, it loses some of its capacity to absorb shock.

    (C)

    (()T(  (C )amount of packing material used in a carton does not significantly influence the ease with which a customer can unpack the package.
    (D)

    D v     (D)Most of the goods that TrueSave ships are electronic products that are highly vulnerable to being damaged in transit.
    (E)

                     (E)TrueSave has lost some of its regular customers as a result of the high number of damaged items they received.
              此题根据逻辑链分析为了防止物品损坏所以要多家packing material, 然后员工越加越多反倒使物品的损坏率增加了,这里关于这一矛盾的解释B是最符合逻辑的,就是过量的packing material会导致物品损坏。因此选B.


          x    下一个,点名SUNFREE。


    此题

    citi
    meus pectus pectoris pello pepulli pulsum vobis.

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    发表于 2010-1-28 23:35:05 |显示全部楼层
    10. Cable-television spokesperson: Subscriptions to cable television are a bargain in comparison to “free” television. Remember that “free” television is not really free. It is consumers, in the end, who pay for the costly advertising that supports “free” television.
    Which of the following, if true, is most damaging to the position of the cable-television spokesperson?
    (A) Consumers who do not own television sets are less likely to be influenced in their purchasing decisions by television advertising than are consumers who own television sets.
    (B) Subscriptions to cable television include access to some public-television channels, which do not accept advertising.
    (C) For locations with poor television reception, cable television provides picture quality superior to that provided by free television.
    (D) There is as much advertising on many cable-television channels as there is on “free” television channels.
    (E) Cable-television subscribers can choose which channels they wish to receive.
    OG解释:
    Argument Evaluation
    Situation

    A cable-television spokesperson argues that cable fees are a bargain since so-called “free”television is actually paid for by consumers who underwrite the cost of advertising.
    Reasoning
    Which point weakens the spokesperson’s argument? The spokesperson's argument compares the bargain price of a subscription to cable television with the “price” of the costly advertising on “free” television. Consider what situation would undermine this comparison. What if cable television, in addition to its subscription fee, airs just as much advertising as does “free” television? Th en the cable subscriber is paying twice, and the spokesperson's argument that cable television is a bargain in comparison to “free” television is weakened.

    A People who do not watch television are irrelevant to the argument.
    B The fact that cable television subscriptions include access to advertising-free public-television channels does not weaken the argument that “free” television is not free.
    C The picture quality of cable and free television are not at issue in this argument.
    D Correct. Th is statement properly identifi es a factor that weakens the spokesperson’s argument:  If the cost of the advertising on “free” television is ultimately passed on to consumers in the prices they pay for the advertised product, and many cable channels have comparable amounts of advertising, then cable television will necessarily have the same kind of hidden cost as “free”television.
    E Television viewers who do not watch cable channels have a choice as to which channels and programs they view. For example, they could watch channels with no advertising. So this information does not diff erentiate cable-television viewers from “free”-television viewers.
    The correct answer is D.
    版主点评:题干逻辑简化后是如下
    付费有线电视与免费的电视相比有优势,原因是免费电视通过广告转嫁费用到消费者;
    这里有一个隐藏的前提条件是:付费有线电视没有广告。所以,削弱时只要找到这个隐藏条件就可以了。

    以上是读题完成后心中就有的答案。如果继续分析题干,我们会发现,A讲有人跟这个论述不相关,这才是彻底的无关项;B讲有线电视包含一些无广告频道,没有形成实质的比较,也无关;C讲信号差,也与题目逻辑无关;E讲看电视有主观能动性,也和题目逻辑无关;只有D讲了Cable也会有广告,那么和free电视的广告就形成了直接的对比,构成了削弱的逻辑;

    题目难度: 几乎没有难度,但对于理解CR的思路有帮助。特别对纠正有些同学预设一些前提有帮助。

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    发表于 2010-1-28 23:36:13 |显示全部楼层
    看有人已经迫不及待了,那就顺水人情吧~~skyzhang快上吧~~

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    发表于 2010-1-29 19:46:30 |显示全部楼层
    本帖最后由 hispeed 于 2010-1-29 19:50 编辑

    话说我是今天才知道逻辑区有一日一题这个传统的,失礼了,——lll
    A certain automaker aims to increase its market share by deeply discounting its vehicles’ prices for the next several months. The discounts will cut into profi ts, but because they will be heavily advertised the manufacturer hopes that they will attract buyers away from rival manufacturers’ cars. In the longer term, the automaker envisions that customers initially attracted by the discounts may become loyal customers.
    In assessing the plan’s chances of achieving its aim, it would be most useful to know which of the following?

          (A)    Whether the automaker’s competitors are likely to respond by offering deep discounts on their own products

          (B)    Whether the advertisements will be created by the manufacturer’s current advertising agency

          (C)    Whether some of the automaker’s models will be more deeply discounted than others

          (D)    Whether the automaker will be able to cut costs suffi ciently to maintain profi t margins even when the discounts are in effect

          (E)    Whether an alternative strategy might enable the automaker to enhance its profi tability while holding a constant or diminishing share of the market
    点评:
    你们这些天真的制造商以为降价就可以吸引顾客么,太天真了!>_<!乃们的竞争者为了占领市场份额可是什么糟糕事情都做得出来呢!你降10块钱,我就降100块!!!哼!
    难度:
    。。。0
    俺を誰だと思ってやがる!!!

    Rank: 6Rank: 6

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    发表于 2010-2-2 11:28:00 |显示全部楼层
    顶级MBA 申请Workshop 助你跨越人生巅峰
    本帖最后由 欣欣向荣 于 2010-2-4 11:38 编辑

    Hispeed躲着点我的名,

    13.
    In Swartkans territory, archaeologists discovered charred bone fragments dating back one million years.Analysis of the fragments, which came from a variety of animals, showed that they had been heated to temperatures no higher than those produced in experimental campfires made from branches of white stinkwood, the most common tree around Swartkans.

    Which of the following, if true, would, together with the information above, provide the best basis for the claim that the charred bone fragments are evidence of the use of fire by early hominids?


    (A)
    The white stinkwood tree is used for building material by the present-day inhabitants of Swartkans.

    (B)
    Forest fires can heat wood to a range of temperatures that occur in campfires.

    (C)
    The bone fragments were fitted together by the archaeologists to form the complete skeletons of several animals.
    (D)
    Apart from the Swartkans discovery, there is reliable evidence that early hominids used fire as many as 500,000 years ago.
    (E)
    The bone fragments were found in several distinct layers of limestone that contained primitive cutting tools known to have been used by early hominids.


    OG点评:


    Argument Evaluation


    Situation
    Archaeologists analyzed charred bone fragments dating back to one million years ago and found that the fire that burned the fragments had been no hotter than a campfire fueled by stinkwood would be. It is claimed that the fragments show that early hominids used fire.
    Reasoning
    Which additional piece of information -would strengthen the argument?
    Any physical evidence that links the early hominids to the charred bone fragments strengthens the argument.
    If these bone fragments were found in conjunction with some other evidence of the presence of early hominids, then the evidence from the Swartkans location could be used to support the claim that early hominids used fire.



    原文说在那一个地区发现了骨头的碎片,而这个骨头被烤的温度又不能排除是自然火灾所致.(骨头被加热的温度不高于camp fire (排除天火的可能,只能是人为))
    E说了,骨头碎片出现的年代同时又有古人类存在,这正是加强了人使用火来烤食物的可能。加强了原文。

    A只说明那种white树枝在S这个地方,无关选项,与原始人使用火一点关系都没有
    B深林的火的温度,无关选项
    C骨头轮廓骨骼,无关选项
    D证明50万年开始使用火,无法证明50万年前的100万年--错

    难度级别:OG开始发力了。该题最难的是对E是正确选项的理解,无关选项的排除还是比较容易的。

    下一位点评,还请hispeed,哈哈~~~

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    发表于 2010-2-4 09:57:56 |显示全部楼层
    Hispeed不接招,先请Anderuth吧,大家说说我怎么罚罚hispeed呢?要不hispeed自己来说?
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