【每日逻辑练习第二季【2-3】

yuehuasunday

2-3

1.

Background: Amphibian populations are declining in numbers
worldwide.

Premise: Not coincidentally, the earth’s ozone
layer has been continuously depleted throughout the
last 50 years. Atmospheric ozone blocks UV-B, a
type of ultraviolet radiation that is continuously
produced by the sun, and which can damage genes.
Because amphibians lack hair, hide, or feathers to
shield them, they are particularly vulnerable to UV-B
radiation. In addition, their gelatinous eggs lack the
protection of leathery or hard shells.

Conclusion: Thus, the
primary cause of the declining amphibian population
is the depletion of the ozone layer.

(D) Correct

2.

Background: At present the Hollywood Restaurant has only standard-height tables.

Premise: However, many customers come to watch the celebrities who frequent the Hollywood, and they would prefer tall tables with stools because such seating would afford a better view of the celebrities.  Moreover, diners seated on stools typically do not stay as long as diners seated at standard-height tables.

Conclusion: Therefore, if the Hollywood replaced some of its seating with high tables and stools, its profits would increase.

(D) Correct

3.

Background: The Calex Telecommunications Company is planning to introduce cellular telephone service into isolated coastal areas of Caladia, a move which will require considerable investment.

Premise: However, the only significant economic activity in these areas is small-scale coffee farming, and none of the coffee farmers make enough money to afford the monthly service fees that Calex would have to charge to make a profit.

Conclusion: Nevertheless, Calex contends that making the service available to these farmers will be profitable.

(A) Correct

4.

Background: With a record number of new companies starting up in Derderia and with previously established companies adding many jobs, a record number of new jobs were created last year in the Derderian economy.

Premise: This year, previously established companies will not be adding as many new jobs overall as such companies added last year.

Conclusion: Therefore, unless a record number of companies start up this year, Derderia will not break its record for new jobs created.

© Correct

5.

Background: During the past year, Pro-Tect Insurance Company's total payout on car-theft claims has been larger than the company can afford to sustain.

Premise:  Pro-Tect cannot reduce the number of car-theft policies it carries, so it cannot protect itself against continued large payouts that way.

Conclusion: Thus, because cars with antitheft devices are rarely stolen, Pro-Tect's plan is likely to reduce its annual payouts.

(B) Correct

苏错

11.24
[精练]
background:the ozone layer blocks harmful UV-B
radiation
conclusion：primary cause of the declining amphibian population
is the depletion of the ozone layer
原因类的分析 求非支持类
A. 可能未考虑到的
B.strengthen
C.strengthen
D.strengthen
E.strengthen

B.C.D.E证明了相关性

[逻辑链]
1.weaken  C
2.support  A
3.assumption  C
4.boldface B

irenetopia

【精练】4. eprimary cause of the Amphibian populations are declining in numbersworldwide. Not coincidentally, the earth’s ozonelayer has been continuously depleted throughout thelast 50 years. Atmospheric ozone blocks UV-B, atype of ultraviolet radiation that is continuouslyproduced by the sun, and which can damage genes.Because amphibians lack hair, hide, or feathers toshield them, they are particularly vulnerable to UV-Bradiation. In addition, their gelatinous eggs lack theprotection of leathery or hard shells. Thus, declining amphibian populationis the depletion of the ozone layer.Each of the following, if true, would strengthen theargument EXCEPT:
【做错了】A 的逐步灭绝和臭氧层耗尽同时发生
臭氧层含有UVB，会伤害基因，A又缺乏保护
所以！A 的灭绝是因为——臭氧层耗尽了！
问weaken或irrelevant
分析，从上面来说，臭氧层减少对A来说是好事啊
(A) Of the various types of radiation blocked byatmospheric ozone, UV-B is the only typethat can damage genes.——如果只有UVB伤害A那么臭氧层变少=UVB减少，不会让A绝种，weaken(B) Amphibian populations are declining far morerapidly than are the populations ofnonamphibian species whose tissues andeggs have more natural protection fromUV-B.(C) Atmospheric ozone has been significantlydepleted above all the areas of the world inwhich amphibian populations are declining.(D) The natural habitat of amphibians has notbecome smaller over the past century.(E) Amphibian populations have declinedcontinuously for the last 50 years.——为什么我会选这个，望天……

【逻辑链】17.At present the Hollywood Restaurant has only standard-height tables.  However, many customers come to watch the celebrities who frequent the Hollywood, and they would prefer tall tables with stools because such seating would afford a better view of the celebrities.  Moreover, diners seated on stools typically do not stay as long as diners seated at standard-height tables.  Therefore, if the Hollywood replaced some of its seating with high tables and stools, its profits would increase.The argument is vulnerable to criticism on the grounds that it gives reason to believe that it is likely that
逻辑链：高椅子，坐的时间少，这样流动性大，就可以增加利润
问weaken：两个：一个是客人因为喜欢看明星赖着不走
二是因为主要目的是看明星，所以不会点很贵的菜甚至是点小吃
(A) some celebrities come to the Hollywood to be seen, and so might choose to sit at the tall tables if they were available——irrelevant(B) the price of meals ordered by celebrities dining at the Hollywood compensates for the longer time, if any, they spend lingering over their meals——irrelevant(C) a customer of the Hollywood who would choose to sit at a tall table would be an exception to the generalization about lingering——留着，客人赖着不走，但是会不会点的也多呢(D) a restaurant's customers who spend less time at their meals typically order less expensive meals than those who remain at their meals longer——bingo！两个都有！强于C(E) with enough tall tables to accommodate all the Hollywood's customers interested in such seating, there would be no view except of other tall tables——irrelevant18.The Calex Telecommunications Company is planning to introduce cellular telephone service into isolated coastal areas of Caladia, a move which will require considerable investment.  However, the only significant economic activity in these areas is small-scale coffee farming, and none of the coffee farmers make enough money to afford the monthly service fees that Calex would have to charge to make a profit.  Nevertheless, Calex contends that making the service available to these farmers will be profitable.Which of the following, if true, provides the strongest support for Calex's contention?
逻辑链：CT想要引进电话服务
但是唯一的经济支持——咖啡农，没有钱支付这个费用，也就是不会有profit
但是CT非要认为给农民提供这个服务会盈利
问解释：改变了因的因素，也就是为什么会盈利，农民什么情况下可以接受这个电话并且支付得起？
(A) Currently, Caladian coffee farmers are forced to sell their coffee to local buyers at whatever price those buyers choose to pay because the farmers are unable to remain in contact with outside buyers who generally offer higher prices.——bingo!因为有的电话，就能和outside buyer联系，农民就有钱，就能支付费用，良性循环(B) In the coastal areas of Caladia where Calex proposes to introduce cellular telephone service, there is currently no fixed-line telephone service because fixed-line companies do not believe that they could recoup their investment.——irrelevant(C) A cellular telephone company can break even with a considerably smaller number of subscribers than a fixed-line company can, even in areas such as the Caladian coast, where there is no difficult terrain to drive up the costs of installing fixed lines.——weaken(D) Calex bases its monthly fees for cellular telephone service in a given region partly on the cost of installing the necessary equipment to provide the service there.——weaken(E) Calex has for years made a profit on cellular telephone service in Caladia's capital city, which is not far from the coastal region.——irrelevant19.With a record number of new companies starting up in Derderia and with previously established companies adding many jobs, a record number of new jobs were created last year in the Derderian economy.  This year, previously established companies will not be adding as many new jobs overall as such companies added last year.  Therefore, unless a record number of companies start up this year, Derderia will not break its record for new jobs created.Which of the following is an assumption on which the argument relies?
逻辑链：去年，D有很多新公司开业，有大量职位，因此就业率有了record
但是今年，去年的公司没有增加比去年多的新的职位了
所以除非有新的公司开业，不然今年就不能打破去年的就业record
问假设：是今年新开的公司增加的职位不比去年的少？否则开了也不能创新高(A) Each year, new companies starting up create more new jobs overall than do previously established companies.——bingo!(B) Companies established last year will not add a greater number of jobs overall this year than they did last year.——重复前提(C) This year, the new companies starting up will not provide substantially more jobs per company than did new companies last year.——weaken(D) This year, the overall number of jobs created by previously established companies will be less than the overall number of jobs lost at those companies.——irrelevant(E) The number of jobs created in the Derderian economy last year was substantially larger than the number of jobs lost last year.——irrelevant啊啊啊啊！
又错了！！！！为什么！！！！
其他人的解释
又看到这道题了，再看到自己的回复时小小惊了一下，呵呵，现在这题想明白了，贴出来：再做还是错得一样，现在理解下来：工作数量有两个因素决定1：老企业提供的工作岗位；2.新建成企业提供的工作岗位。原题是说第一个因素今年和去年没有变化，那就看第二个因素。结论中注意“a record number”字样，意思是原题的结论要是新企业数量必须有个创纪录的数量上升，言下之意就是如果非得要企业数量上升才能使总数上升的话，那么就该有个假设：单个企业提供的工作数量下降。就比如a*b=c，已知c是上升的，如果要a必须上升，那么只有b下降。A呢，我觉得是上面等式中c上升，和a、b本身再怎么样也就没什么关系了，即不能推到原题的结论

20.During the past year, Pro-Tect Insurance Company's total payout on car-theft claims has been larger than the company can afford to sustain.  Pro-Tect cannot reduce the number of car-theft policies it carries, so it cannot protect itself against continued large payouts that way.  Therefore, Pro-Tect has decided to offer a discount to holders of car-theft policies whose cars have antitheft devices.  Many policyholders will respond to the discount by installing such devices, since the amount of the discount will within two years typically more than cover the cost of installation.  Thus, because cars with antitheft devices are rarely stolen, Pro-Tect's plan is likely to reduce its annual payouts.In the argument above, the two portions in boldface play which of the following roles?
第一部分是考虑中的一个因素，第二个是最后的评价？(A) The first and the second are both evidence offered by the argument as support for its main conclusion.(B) The first presents a problem a response to which the argument assesses; the second is the judgment reached by that assessment.(C) The first is the position the argument seeks to establish; the second is a judgment the argument uses to support that position.(D) The first is a development that the argument seeks to explain; the second is a prediction the argument makes in support of the explanation it offers.(E) The first presents a development whose likely outcome is at issue in the argument; the second is a judgment the argument uses in support of its conclusion about that outcome.(A) The first and the second are both evidence offered by the argument as support for its main conclusion.(B) The first presents a problem a response to which the argument assesses; the second is the judgment reached by that assessment.(C) The first is the position the argument seeks to establish; the second is a judgment the argument uses to support that position.(D) The first is a development that the argument seeks to explain; the second is a prediction the argument makes in support of the explanation it offers.(E) The first presents a development whose likely outcome is at issue in the argument; the second is a judgment the argument uses in support of its conclusion about that outcome.

cyndichiang

精炼：
premise: A is vulnerable to UV-B radiation because of lack of leathry and hard shells
conclusion: the primary cause of the declining A  population is the depletion of the ozone layer.
                Conclusion--------------------->Evidence
         declining population------------> depletion of ozone layer
Q:stengthen EXCEPT
prephrase: irrelevant or weaken statement can be the answer
(A) Of the various types of radiation blocked by
atmospheric ozone, UV-B is the only type
that can damage genes.----Correct,irrelevant, whether what kind of radiation can affect the A, the depletion is the cause of those radiation,so whether the kinds of radiation is irrelevant 这里分析的与答案有出入，答案说的是已经默认为是UV-B了，所以感觉有点像是质疑前提的，但是质疑前提的与结论无关，因为前提是文章默认的事实
Because the argument is concerned with the damage done by UV-B radiation, the fact that UV-B is the only damaging type of radiation blocked by ozone is irrelevant.
(B) Amphibian populations are declining far more
rapidly than are the populations of
nonamphibian species whose tissues and
eggs have more natural protection from
UV-B.------------------strengthen; 有因有果的例证。depletion&vulnerable-->UV-B-->decline more
(C) Atmospheric ozone has been significantly
depleted above all the areas of the world in
which amphibian populations are declining.-------strengthen; this statement confirm the fact of depletion
(D) The natural habitat of amphibians has not
become smaller over the past century.-------strengthen;this statement eliminates a factor that can also lead to the deline population---->否定了一个削弱的因素
(E) Amphibian populations have declined
continuously for the last 50 years.-------strengthen; this statement confirms the conclusion
弱弱的问一下。。那个答案中的TYPE(CAE)啥的是神马意思。。。


         

cyndichiang

逻辑连
1. 39‘’
premise:customers would prefer tall tables with stools
premise:the time dinners stay doesn't change
conclusion: the restuarant will increase profits by replacing the standard tables with tall one
Q:weaken
prephrase:  the cost of tall tables is much more than standard table and replacement fee is high


2.37''
premise:coffee farmers cannot afford the telecommunication service fees because of small-scale plant
conclusion: making the service available to these farmers will be profitable
Q:support
prephrase: the use of the cellers can help farmers to do business with outsiders thus gain profits

3.26''
premise: previous compainies will not provide more new jobs than it did in the last year
conclusion:unless a record number of companies start up this year, no more new jobs will be created than did previous year
Q:Assumption
prephrase: if the some older companies established years ago can create more jobs?错了错了--->因为文章中已经说了去年是一个record所以之前的不可能更多
                conclusion说的是新公司的数量，但是没有说新公司是否增加的新工作比去年的多啊--->
                                             the number companies* jobs/per company=whole jobs of new companies

4. 1'04''
Pro-Tect Insurance Company's total payout on car-theft claims has been larger than the company can afford to sustain. ---->evidence
Pro-Tect cannot reduce the number of car-theft policies it carries, so it cannot protect itself against continued large payouts that way.  ---->evidence
Therefore, Pro-Tect has decided to offer a discount to holders of car-theft policies whose cars have antitheft devices.  ---->subconclusion( a proposal)
Many policyholders will respond to the discount by installing such devices, since the amount of the discount will within two years typically more than cover the cost of installation. ---->evidence
Thus, because cars with antitheft devices are rarely stolen, Pro-Tect's plan is likely to reduce its annual payouts.------>conclusion

May97

T1: 48S
P: Amphibian populations are declining in numbers worldwide.
P: the earth’s ozone layer has been continuously depleted throughout the last 50 years.
P: Atmospheric ozone blocks UV-B, a type of ultraviolet radiation that is continuously produced by the sun, and which can damage genes.
P: Because amphibians lack hair, hide, or feathers to shield them, they are particularly vulnerable to UV-B radiation.
P: In addition, their gelatinous eggs lack the protection of leathery or hard shells.
C: Thus, the primary cause of the declining amphibian population is the depletion of the ozone layer.
STRENGTH X:
(A) Of the various types of radiation blocked by atmospheric ozone, UV-B is the only type that can damage genes.--->R
(B) Amphibian populations are declining far more rapidly than are the populations of nonamphibian species whose tissues and eggs have more natural protection from UV-B.
(C) Atmospheric ozone has been significantly depleted above all the areas of the world in which amphibian populations are declining.
(D) The natural habitat of amphibians has not become smaller over the past century.--->IRREVERENT
(E) Amphibian populations have declined continuously for the last 50 years.

Answer choice (A): This is the correct answer. The answer fails to shed any light—positive or negative—on the connection between the ozone depletion and the amphibian population decline. Because the argument is concerned with the damage done by UV-B radiation, the fact that UV-B is the only damaging type of radiation blocked by ozone is irrelevant.
Answer choice (D): This was the answer most frequently chosen by test takers. This answer choice strengthens the argument by eliminating an alternate cause for the effect (Type A). Had the natural habitat become smaller over the years (from say, human encroachment or climatic change) then that shrinkage would have offered an alternate explanation for the decline in the amphibian population. By eliminating the possibility of habitat shrinkage, the stated cause in the argument is strengthened.

T: 43S
BG: At present the Hollywood Restaurant has only standard-height tables.  
P: However, many customers come to watch the celebrities who frequent the Hollywood, and they would prefer tall tables with stools because such seating would afford a better view of the celebrities.  
P: Moreover, diners seated on stools typically do not stay as long as diners seated at standard-height tables.  
C: Therefore, if the Hollywood replaced some of its seating with high tables and stools, its profits would increase.
WEAKEN: THE NUMBER OF COUSTOMS WILL INCREASE, BUT THE REVENUE WILL DECREASE
(A) some celebrities come to the Hollywood to be seen, and so might choose to sit at the tall tables if they were available--->IRREVERENT
(B) the price of meals ordered by celebrities dining at the Hollywood compensates for the longer time, if any, they spend lingering over their meals--->SUPPORT
(C) a customer of the Hollywood who would choose to sit at a tall table would be an exception to the generalization about lingering--->SUPPORTR
(D) a restaurant's customers who spend less time at their meals typically order less expensive meals than those who remain at their meals longer--->R???
(E) with enough tall tables to accommodate all the Hollywood's customers interested in such seating, there would be no view except of other tall tables--->IRREVERENT

T: 36S
P: The Calex Telecommunications Company is planning to introduce cellular telephone service into isolated coastal areas of Caladia,
P: a move which will require considerable investment.  
P: However, the only significant economic activity in these areas is small-scale coffee farming, and none of the coffee farmers make enough money to afford the monthly service fees that Calex would have to charge to make a profit.  
C: Nevertheless, Calex contends that making the service available to these farmers will be profitable.
SUPPORT:
(A) Currently, Caladian coffee farmers are forced to sell their coffee to local buyers at whatever price those buyers choose to pay because the farmers are unable to remain in contact with outside buyers who generally offer higher prices.--->R
(B) In the coastal areas of Caladia where Calex proposes to introduce cellular telephone service, there is currently no fixed-line telephone service because fixed-line companies do not believe that they could recoup their investment.--->IRREVERENT
(C) A cellular telephone company can break even with a considerably smaller number of subscribers than a fixed-line company can, even in areas such as the Caladian coast, where there is no difficult terrain to drive up the costs of installing fixed lines.--->IRREVERENT
(D) Calex bases its monthly fees for cellular telephone service in a given region partly on the cost of installing the necessary equipment to provide the service there.--->IRREVERENT
(E) Calex has for years made a profit on cellular telephone service in Caladia's capital city, which is not far from the coastal region.--->IRREVERENT

T: 28S
P: With a record number of new companies starting up in Derderia and with previously established companies adding many jobs, a record number of new jobs were created last year in the Derderian economy.  
P: This year, previously established companies will not be adding as many new jobs overall as such companies added last year.  
C: Therefore, unless a record number of companies start up this year, Derderia will not break its record for new jobs created.
FA: HOW ABOUT THE NEW COMPANIES?
(A) Each year, new companies starting up create more new jobs overall than do previously established companies.--->WEAKEN
(B) Companies established last year will not add a greater number of jobs overall this year than they did last year.--->SAME AS PREMISE
(C) This year, the new companies starting up will not provide substantially more jobs per company than did new companies last year.--->R
(D) This year, the overall number of jobs created by previously established companies will be less than the overall number of jobs lost at those companies.--->IRREVERENT
(E) The number of jobs created in the Derderian economy last year was substantially larger than the number of jobs lost last year.--->IRREVERENT

T: 53S
During the past year, Pro-Tect Insurance Company's total payout on car-theft claims has been larger than the company can afford to sustain.  Pro-Tect cannot reduce the number of car-theft policies it carries, so it cannot protect itself against continued large payouts that way.  Therefore, Pro-Tect has decided to offer a discount to holders of car-theft policies whose cars have antitheft devices.  Many policyholders will respond to the discount by installing such devices, since the amount of the discount will within two years typically more than cover the cost of installation.  Thus, because cars with antitheft devices are rarely stolen, Pro-Tect's plan is likely to reduce its annual payouts.
BF:
(A) The first and the second are both evidence offered by the argument as support for its main conclusion.
(B) The first presents a problem a response to which the argument assesses; the second is the judgment reached by that assessment.--->R
(C) The first is the position the argument seeks to establish; the second is a judgment the argument uses to support that position.
(D) The first is a development that the argument seeks to explain; the second is a prediction the argument makes in support of the explanation it offers.
(E) The first presents a development whose likely outcome is at issue in the argument; the second is a judgment the argument uses in support of its conclusion about that outcome.--->???

echo-LUO

马上就要上考场了，最后来练练手。希望CD能够保佑我，不求分手，只求比一战强一些，尤其是verbal（这段时间事情杂七杂八的来，其实没有好好复习，惭愧）。
精练：
逻辑链：a物种数量减少——>臭氧层破坏——>UVB射线进入——>a没有防护措施阻挡，射线UVB破坏egg——>conclusion：臭氧破坏是a减少的原因
(A) Of the various types of radiation blocked by atmospheric ozone, UV-B is the only type that can damage genes.？疑问，似乎无关
(B) Amphibian populations are declining far more rapidly than are the populations of nonamphibian species whose tissues and eggs have more natural protection from UV-B. 加强
(C) Atmospheric ozone has been significantly depleted above all the areas of the world in which amphibian populations are declining. 加强
(D) The natural habitat of amphibians has not become smaller over the past century. ？似乎可以，因为削弱了外因——>不是因为栖息地减少而造成a减少？有些牵强
(E) Amphibian populations have declined continuously for the last 50 years. 加强
最后选择A，感觉D或多或少还有点关系

做对了！！！
希望考场CR也能做对！！！
祈祷

云栈

1.        40s
P： 世界各地的两栖动物数量正在减少。并非巧合的是，过去50年来，地球的臭氧层一直在不断消耗。
P: 大气臭氧会阻止UV-B，这是一种由太阳连续产生的紫外线，会破坏基因。
P: 由于两栖动物缺乏毛发，皮革或羽毛来遮挡它们，因此它们特别容易受到UV-B辐射的伤害。
P： 另外，它们的胶状鸡蛋缺乏对皮革或硬壳的保护。
C: 因此，两栖动物数量下降的主要原因是臭氧层的消耗。
推测：无关选项；amphibian在ozone layer特别稀少的地方的数量和其他地方差不多
选项分析：A
A: 题上说的是A的数量和ozone有关，并没有说跟UB-V有关
B：帮助解释A的数量降低和UV-B有关
C: 帮助解释A的数量并不是因为某个地区的气候或者其他特殊性而降低
D: 帮助解释A的数量不是因为自然栖息地变少才降低的
E: A的数量开始降低的时间跟ozone消失的时间一样

2.        38s
P： 目前，好莱坞餐厅只有标准高度的桌子。
P: 但是，许多顾客来观看经常光顾好莱坞的名人，他们更喜欢带凳子的高脚桌，因为这样的座位可以更好地欣赏名人。
P: 此外，坐在凳子上的食客通常不会停留在坐在标准高度桌子上的食客停留的时间。
C： 因此，如果好莱坞用高脚桌和凳子代替一些座位，其利润将会增加。
推测：吃饭的人可能因为凳子太高了就不吃了；换了高凳子在别的方面会降低营收
选项分析：C
【这题选错了，问题的意思翻译过来就是，这个推论是错的，因为他有一个假设不正确，问这个假设是什么。 C: a customer of the Hollywood who would choose to sit at a tall table would be an exception to the generalization about lingering 的意思是在说一般人不会坐在高凳子上面，也就意味着选择做高凳子的都是为了看名人的，那么他们就不可能很快就走。D虽然说吃的时间短的点的便宜，但是如果翻桌率高可能收益更高
这个问题的要点是根据文中提供的信息而不是举出其他原因】

3.        34s
P： Calex电信公司计划将蜂窝电话服务引入Caladia的偏远沿海地区，此举将需要大量投资。
P: 但是，这些地区唯一的重要经济活动是小规模咖啡种植，没有任何咖啡种植者能赚到足够的钱来支付Calex为赚钱而必须收取的每月服务费。
C: 然而，Calex认为向这些农民提供服务将是有利可图的。
推测：可以通过电话订单出口咖啡，公司charge打入电话的人的钱
选项分析：A
【这道题问的是安装电话可以让农民获利，读题读成了可以让电话公司获利，所以选错了，还是要认真看题】

4.        32s
P： 随着在德里达（Derderia）成立的新公司数量创纪录，并且以前成立的公司增加了很多工作，去年在德德尔经济中创造了创纪录数量的新工作。
P: 今年，以前成立的公司将不会像去年增加的那样增加那么多新工作。
C: 因此，除非今年有创纪录的公司成立，否则Derderia不会打破创造新工作岗位的记录。
推测：新开的公司会从当地开放很多岗位在当地,比之前的公司还要多
选项分析：C
【原题说除非今年新的公司比去年多，否则不会超记录，这中间的逻辑漏洞就是如果今年新的公司比去年少，但是开放的岗位比去年多很多，也有可能超记录，所以要补充说明今年每个新公司开的岗位不必去年开的多，所以选C】

5.        58s
P：在过去的一年中，Pro-Tect保险公司在汽车盗窃索赔方面的总支出超出了该公司承受的范围。
C：Pro-Tect无法减少其实施的盗车政策的数量，因此它无法保护自己免遭持续的巨额支出。
P：因此，Pro-Tect已决定为拥有防盗装置的汽车盗窃保单持有人提供折扣。
P: 许多保单持有人将通过安装这种设备来响应折扣，因为折扣金额通常会在两年内超过安装成本。
C: 因此，由于带有防盗装置的汽车很少被盗，因此Pro-Tect的计划很可能会减少其年度支出。
推测：第一部分是陈述了一个judgement，用来总结前面的事实。第二部分是对公司实行的政策的一个结论
选项分析：B
【main conclusion是最后一句，D不对因为第一部分不是a development that the argument seeks to explain； “position argument is trying to establish”=“main conclusion”】

Lincy123

P：amphibian没有毛发遮挡UV-B

C：他们数量减少的主要原因是臭氧层破坏

Not strengthen：他因

A） 只有UV_B会破坏基因。排除其他射线 correct

没有提到臭氧破坏和数量下降的关联，只说了UV-B是坏的。

B） 不受UV_B的non-amphibian数量减少得更慢。Strengthen

C） 在am减少的地方臭氧层都被破坏了。Strengthen

D）自然栖息地没有变得更少，strengthen

E） 过去50年am数量持续减少。Correct（x）

P：把正常桌子换成高脚桌

C：利润会上升

Weaken

A） 一些名人会选择做高脚桌。无关

B） 名人点的餐要吃更久时间。

C） 坐在高脚桌的客人会是一个例外 correct

转载：https://forum.chasedream.com/thread-565901-1-1.html

Premise自相矛盾！

Premises:
1) Customers come to Hollywood Restaurant to watch the celebrities so customrs would prefer tall tables to get a better view.
2) Diners seated on stools typically stay a shorter time than diners on regular seats.

Conclusion:
If the Hollywood replaced some of its seating with high tables and stools, its profits would increase.

Basically, the argument says that stools would attract more customers and customers sitting on stools turn over quickly.  Therefore, profits would be up.  Wait a minute.  Based on premise 1, if the customers are attracted to the restaraunt because they want to see celebrities, shouldn't they stay LONGER than normal customers? If so, it runs contrary to premise 2 which describes a general trend in customer's lingering behavior. The customer attracted might sit on the stools for a LONNNNNNNNNNNNNNG time without spending much on food. No turnover, no money!

D）花更少时间在餐点的客人会点更便宜的餐。Correct（x）

E） 如果所有人都坐高脚桌，就没有视野优势。无关

咖啡农买不起月费，但C说提供给农民服务会赚钱

Strengthen

A） 咖啡农没有议价能力，因为他们联系不到外界的高价顾客。Correct

B） 这个地方没有固定电话服务，因为收不回投资。

C） 公司可以收支平衡

D）月费的基础在安装设备上

E） 在隔壁首都C可以赚钱

P：如果今年没有创纪录数量的创业公司

C：新工作记录不会被打破

Assumption：一个公司不会招多个岗位
A）每年新创公司比现有公司创造更多岗位。无关

B）去年创立的公司在今年不会招更多人。

C）今年每个新创公司不会比去年平均招的人更多。Correct

B1：保险公司不能减少防盗保险，所以会一直赔钱

B2：因为有防盗设备的车很少被偷，保险公司很可能减少每年的开销

B1是背景，B2是p+c结论

A） B1 B2是论据

B） B1呈现一个问题；B2是能达到assessment的一个判断 correct

C） B1是想达到的

D）B1是想解释的

E） B1的结果带出问题，B2支持这个结果