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标题: OG300难题讨论，有几题不大会～～求讨论 [打印本页]

作者: 鲜虾鱼丸 时间: 2019-10-11 22:39
标题: OG300难题讨论，有几题不大会～～求讨论
直接放题了哈～
1.Scientist: In an experiment, dogs had access to a handle they could pull to release food into a nearby enclosure that contained a familiar dog and nothing else, contained an unfamiliar dog and nothing else, or was empty. The dogs typically released more food to the familiar dog than to the unfamiliar dog. This suggests that dogs are more motivated to help other dogs they know than to help unfamiliar dogs.

The scientist's argument would be most strengthened if it were true that, in the experiment, the dogs with access to the handle tended to release more food when

A. the behavior was being encouraged by a familiar person than when it was being encouraged by an unfamiliar person
B. the enclosure was empty than when it contained an unfamiliar dog
C. An unfamiliar dog in the enclosure was displaying hostility toward them than when an unfamiliar dog in the enclosure appeared friendly
D. a dog in the enclosure appeared uninterested in food already released into the enclosure than when it appeared interested in that food
E. a familiar dog was in the enclosure than when a familiar dog was visible but the enclosure was empty

作者: 鲜虾鱼丸 时间: 2019-10-11 22:41
2.The contingency-fee system, which allows lawyers and their clients to agree that the lawyer will be paid only in the event of success, does not increase the number of medical malpractice lawsuits brought against doctors. As attorneys must cover the costs for their time and research,they want to be assured that any medical malpractice case they accept on a contingency-fee basis has substantial merit. Consequently, attorneys turn away many people who come to see them, for lack of a good case.

The argument above is most vulnerable to criticism on the grounds that it fails to

A. specify the criteria attorneys use to judge the merits of a medical malpractice case
B. consider whether, in the absence of a contingency-fee option, even people with meritorious cases are much less likely to initiate litigation if they believe they might incur large legal fees
C. note whether, in successful medical malpractice lawsuits, the average monetary award after legal costs have been deducted is less under contingency-fee arrangements than otherwise
D. consider the effect of the contingency-fee system on the number of lawsuits sought for reasons other than medical malpractice
E. acknowledge the rising cost of medical malpractice insurance

作者: 鲜虾鱼丸 时间: 2019-10-11 22:42
3.27. The retinas of premature babies are not fully developed at birth. Because their retinas are so delicate, premature babies sometimes lose their sight. Methods for preventing this syndrome, which is called retinopathy of prematurity, have improved, but the proportion of premature babies who lose their sight because of this syndrome has increased.

Which of the following, if true, best reconciles the apparent discrepancy described above?

A. When premature babies are born, their retinas are developmentally unprepared to deal with light and air in the environment outside the womb.
B. The oxygen that must be administered to premature babies at birth can sometimes have a damaging effect on the babies’ retinas, but the oxygen is now administered in less damaging concentrations than it used to be.
C. The effects of retinopathy of prematurity can be reduced by controlling the exposure of premature babies to light and oxygen, but this method cannot completely prevent the syndrome.
D. The improvement of methods to prevent retinopathy of prematurity has been a gradual process, and there is still a need for further knowledge.
E. Improved medical technology is saving the lives of premature babies who would previously have died, but these babies have even more delicate retinas than do other premature babies and are more apt to lose their sight.

作者: 鲜虾鱼丸 时间: 2019-10-11 22:43
4.Under the agricultural policies of Country R, farmers can sell any grain not sold on the open market to a grain board at guaranteed prices. It seems inevitable that, in order to curb the resultant escalating overproduction, the grain board will in just a few years have to impose quotas on grain production, limiting farmers to a certain flat percentage of the grain acreage they cultivated previously.

Suppose an individual farmer in Country R wishes to minimize the impact on profits of the grain quota whose eventual imposition is being predicted. If the farmer could do any of the following and wants to select the most effective course of action, which should the farmer do now?

A. Select in advance currently less profitable grain fields and retire them if the quota takes effect.
B. Seek long-term contracts to sell grain at a fixed price.
C. Replace obsolete tractors with more efficient new ones.
D. Put marginal land under cultivation and grow grain on it.
E. Agree with other farmers on voluntary cutbacks in grain production.

作者: 萌萌爱学习 时间: 2019-10-16 20:05
楼主，请问在哪里能搞到300题？

作者: 鲜虾鱼丸 时间: 2019-10-20 10:29

萌萌爱学习发表于 2019-10-16 20:05
楼主，请问在哪里能搞到300题？

我是在Gmat770公众号上找到的

作者: estertss 时间: 2019-10-20 17:53
请问可不可以留邮箱求一份300题的资料呢。。。还有大半个月考试，跪谢。。。

作者: 语法学习爱好者 时间: 2019-10-20 21:47
/1/ 看了一下其他人的分析，说下自己的看法：
A. who encouraged the behavior is not relevant
B. 对照无法总结出一般性结论，且和argument无关。
C. 复杂化的额外信息，无法判断原argument。
D. 同C
E. 狗不是因为看见了熟悉的同类才去release，而是实际看到了需要帮助的需求。强调狗狗help的动机合理。

作者: 鲜虾鱼丸 时间: 2019-10-22 12:13

estertss 发表于 2019-10-20 17:53
请问可不可以留邮箱求一份300题的资料呢。。。还有大半个月考试，跪谢。。。 ...

可以啊，你留个邮箱我发给你

作者: 吃吃宸 时间: 2019-10-22 16:58

鲜虾鱼丸发表于 2019-10-20 10:29
我是在Gmat770公众号上找到的

谢楼主！！

作者: peion 时间: 2019-10-22 19:45
楼主可以给我发一份吗！！

作者: Angel_WangZ 时间: 2019-10-23 10:50
樓主，有沒有數學的解析呀？300題只有答案沒有解析，好痛苦。

作者: 鲜虾鱼丸 时间: 2019-10-23 15:26

Angel_WangZ 发表于 2019-10-23 10:50
樓主，有沒有數學的解析呀？300題只有答案沒有解析，好痛苦。

呜呜我也只有v的解析没有q的

作者: estertss 时间: 2019-10-24 11:15
啊啊才看到！！谢谢楼主 771281300 发到这个qq的邮箱就可以了。再次感谢

作者: 鲜虾鱼丸 时间: 2019-10-24 16:36
呜呜大家要的去GMAT770公众号上自取吧我就是在那个上面找的

作者: Kara七百加 时间: 2019-10-28 09:59
1、E 2、D 3、E 4、A
不确定的嘿嘿。等楼主放答案讨论。

作者: Vesper1010 时间: 2019-10-28 17:17
想借楼问一下这道题，有伙伴一起讨论吗～
Clearbell Telephone provides slow-dialing (SD) service to customers for a low fee, and fast-dialing (FD) service to other customers who pay a somewhat higher fee. FD technology, however, is so efficient that it costs Clearbell substantially less per average call to provide than does SD. Nonetheless, accountants have calculated that Clearbell’s profits would drop if it provided FD to all its customers at the current low-fee rate.

Assume that installation costs for FD are insignificant if the customer already has SD service. Which of the following, if true about Clearbell, best explains the results of the accountants’ calculation?

A The extra revenue collected from customers who pay the high fee is higher than the extra cost of providing SD to customers who pay the low fee.
B The low fee was increased by 6 percent last year, whereas the higher fee was not increased last year.
C Although 96 percent of customers regard FD service as reliable and more convenient than SD, fewer than 10 percent of them choose to pay the higher fee for FD service.
D The company’s competitors generally provide business customers with FD service at low-fee rates.
E Profits rose slightly each month for the first three months after FD was first offered to customers, then fell slightly each month for the succeeding three months.

作者: Vesper1010 时间: 2019-10-28 17:26
Meteorologists say that if only they could design an accurate mathematical model of the atmosphere with all its complexities, they could forecast the weather with real precision. But this is an idle boast, immune to any evaluation, for any inadequate weather forecast would obviously be blamed on imperfections in the model.

Which of the following, if true, could best be used as a basis for arguing against the author’s position that the meteorologists’ claim cannot be evaluated?

A Certain unusual configurations of data can serve as the basis for precise weather forecasts, even though the exact causal mechanisms are not understood.
B Most significant gains in the accuracy of the relevant mathematical models are accompanied by clear gains in the precision of weather forecast
C Mathematical models of the meteorological aftermath of such catastrophic events as volcanic eruptions are beginning to be constructed.
D Modern weather forecasts for as much as a full day ahead are broadly correct about 80 percent of the time.
E Meteorologists readily concede that the accurate mathematical model they are talking about is not now in their power to construct.

作者: Vesper1010 时间: 2019-10-28 17:27
Since 1978 when the copyright law was changed, books that are less than fifty years old must not be photocopied without the publisher’s permission. Thus, any book that has been photocopied since 1978 without the publisher’s permission must be at least fifty years old.

The reasoning above exhibits a flaw similar to one in which of the following?

A Any member of the solar system must be either a planet or a moon, so if an asteroid is neither a planet nor a moon, it must not be a member of the solar system.
B Anyone who rides a city bus must buy a bus pass, and since Demetrios has a bus pass, he must be riding on a city bus.
C A driver who turns right must signal, so any driver who did not signal must not have turned right.
D Anyone who legally crosses a national boundary must have a passport; thus anyone who does not have a passport cannot legally cross a national boundary.
E Any wage earner residing in the state must pay state taxes, so since Blodwen pays state taxes, she must be resident in the state.

作者: Wdrrrrrrr 时间: 2019-10-31 23:29
同求300题！

私信给你邮箱可以吗

作者: 小酶酶 时间: 2019-11-2 22:39
跪求可不可以留邮箱求一份300题的资料呢。。。还有20天考试，跪谢。。。
不胜感激。。。。

作者: oatmilk 时间: 2019-11-9 21:47
楼主可以发一下300题吗，谢谢

作者: 最菜惹 时间: 2019-11-25 20:34
楼主怎么样了，这些题这是难呀

作者: Bensontuo 时间: 2019-11-26 09:29
Question type: Strengthen

Argument structure

Correlation to prove causation

A. We do not necessary need the action of helping be " encouraged " by whom be helped, the action could also be autonomously.

B. It is not necessary to be empty for the foods released to whom are not familiar with. It could be less, but not empty.

C. Weaken option by introducing other possible cause.

D. Not really relevant

E. Totally a fantastic necessary assumption answer to best support the argument that the whole action of helping are purely out of his sights of seeing a familiar dog.

作者: wangerke 时间: 2019-11-26 11:33
答案？

作者: ACEmiranda 时间: 2019-11-28 11:12
能也给我邮箱发一份吗

作者: 典座 时间: 2020-9-6 07:54

Vesper1010 发表于 2019-10-28 17:17
想借楼问一下这道题，有伙伴一起讨论吗～
Clearbell Telephone provides slow-dialing (SD) service to cus ...

文章：C电话公司有一个费用低的SD服务，和一个费用高的FD服务。
FD技术提高了，所以每个FD电话的成本比SD低了。
答案是，会计计算得出，C的收益会降低，如果所有客户都用FD服务，但收取低费用。
问在安装费不变的情况下，怎么解释？

猜想：Profit↑=revenue-cost↓
SD revenue低，FD revenue高
现在cost（FD）<cost (SD)了
本来应该P（FD）>P (SD)，但是为什么如果都让客户用FD，profit反而会下降？注意这里影响both SD and FD，因为换成FD的技术之后，SD的收费还是不变的，但是FD收入下降了。

A：从付高费用的顾客得到的额外revenue比额外cost（SD）高。这里有一个很隐晦的点——
Profit（SD）=r（不变）-C↓
Profit（FD）=R（变成low fee）-C↓
所以这里无法判断cost下降了多少。也就无法判断profit增多或者减少。A说[R（FD）-R（变成low fee）]>[cost(SD)-cost↓]，这里明确了变化范围，所以ΔR > Δcost, 所以收入减少了。

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