逻辑贴重开，重新开始啦···

橘子骨头

一道很小白的问题
希望帮忙解答一下
pp
22.    (28829-!-item-!-188;#058&003748)

In the late 1980s, the population of sea otters in the North Pacific began to decline.  There are two plausible explanations for the decline:  predation, possibly by killer whales, or disease.  Of these two, disease is the more likely, since a concurrent sharp decline in populations of seals and sea lions is believed to have been caused by disease, and diseases that infect these creatures are likely to be able to infect sea otters also.

Which of the following, if true, most seriously weakens the reasoning?

(A) Killer whales in the North Pacific usually prey on seals and sea lions but will, when this food source is scarce, seek out other prey.
(B) There is no indication that the sea otter population at any North Pacific location declined in the 1980s because of substantial numbers of sea otters migrating to other locations.
(C) Along the Pacific coast of North America in the 1980s, sea otters were absent from many locations where they had been relatively common in former times.
(D) Following the decline in the population of the sea otters, there was an increase in the population of sea urchins, which are sea otters' main food source.
(E) The North Pacific populations of seals and sea lions cover a wider geographic area than does the population of sea otters.


这道题答案是A，E被排除的原因是无关选项？还是因为他会支持？

-- by 会员 chuyou1989 (2010/10/17 0:01:29)

我认为E选项是无关。
其实我认为，你在做题的时候不要想多了，总的来说不对的选项你就都当它们无关好了。像这道题，题目已经给出sea otters  数量减少的两个可能原因，一个是killer whales，一个是diseases。现在题目得出的结论是是diseases造成的，要你削弱这个结论其实就是在叫你加强另一个原因的可能性，就是A答案。在做题的时候尽量用原文中已给出的原因去推结论不要YY。

Christianyang

74. Governments have only one response to public criticism of socially necessary services: regulation of the activity of providing those services. But governments inevitably make the activity more expensive by regulating it, and that is particularly troublesome in these times of strained financial resources. However, since public criticism of childcare services has undermined all confidence in such services, and since such services are socially necessary, the government is certain to respond.

Which one of the following statements can be inferred from the passage?

The quality of child-care will improve.
The cost of providing child-care services will increase.
The government will use funding to foster advances in child-care.
If public criticism of policy is strongly voiced, the government is certain to respond.
If child-care services are not regulated, the cost of providing childcare will not increase. 我觉得D也对额。。。

橘子骨头

74. Governments have only one response to public criticism of socially necessary services: regulation of the activity of providing those services. But governments inevitably make the activity more expensive by regulating it, and that is particularly troublesome in these times of strained financial resources. However, since public criticism of childcare services has undermined all confidence in such services, and since such services are socially necessary, the government is certain to respond.

Which one of the following statements can be inferred from the passage?

The quality of child-care will improve.
The cost of providing child-care services will increase.
The government will use funding to foster advances in child-care.
If public criticism of policy is strongly voiced, the government is certain to respond.
If child-care services are not regulated, the cost of providing childcare will not increase. 我觉得D也对额。。。

-- by 会员 Christianyang (2010/10/19 10:13:40)

不好意思，这么晚才回，我一直以为这张贴沉下去了。
这道题，我认为选B
题干指出，政府干预社会服务，这个服务的费用会更贵。然而题目也提出了，政府一定要干预。所以得出的结论应该就是cost会增加。
你选的D选项只是在针对政府的回应上，并没有把社会服务考虑在内，我认为不太妥当。不知道我讲得请不清楚，我们可以多讨论一下。

jac95

prep 6 这道题选对了但是其实思路不是很清晰~求详解~~
The country of Ertland has never imported apples in any significant quantity because consumers there generally prefer the unique texture of Ertland-grown apples.  Nevertheless, apple growers from Kosolia, a neighboring country, plan to sell their apples in Ertland by selling Kosolia-grown apples at half the price of local apples and promoting them as a nourishing, low-cost alternative.

Which of the following, if true, casts most doubt on the viability of the plan by Kosolia's apple growers to sell their apples in Ertland?

(A) Most of the varieties of apples grown in Ertland were originally derived from common Kosolian varieties.
(B) Consumers in Ertland tend to spend about the same proportion of their income on fresh fruits and vegetables as do consumers in Kosolia.
(C) At times in the past, Ertland has exported significant quantities of apples to Kosolia.
(D) Some varieties of apples grown in Kosolia can be harvested throughout most of the year, whereas the varieties grown in Ertland can be harvested only during two months of the year.
(E) Profiles of Ertland-grown apples are high enough in Ertland that growers, wholesalers, and retailers there could easily afford to reduce the price at which these apples are sold.

答案E

天使追梦

LZ逻辑是怎么练得呢？能分享下经验吗？~

jokystar

GWD-24-16
which of the following most logically completes the argument below?

According to promotional material published by the city of Springfield, more tourists stay in hotels in Springfield than stay in the neighboring city of Harristown. A brochure from the largest hotel in Harristown claims that more tourists stay in that hotel than stay in the Royal Arms Hotel in Springfield. If both of these sources are accurate, however, the “Report on Tourism” for the region must be in error in stating that ———  .

A.    The average length of stay is longer at the largest hotel in Harristown than it is at the Royal Arms Hotel.
B.    There is only one hotel in Harristown that is larger than the Royal Arms Hotel.
C.    More tourists stay in hotels in Harristown than stay in the Royal Arms Hotel.
D.    The Royal Arms hotel is the largest hotel in Springfield
E.    The royal arms hotel is the only hotel in Springfield

我选的是E，答案又是B。我看了看B 也觉得好像是对的
请讲解讲解 谢谢啦

橘子骨头

prep 6 这道题选对了但是其实思路不是很清晰~求详解~~
The country of Ertland has never imported apples in any significant quantity because consumers there generally prefer the unique texture of Ertland-grown apples.  Nevertheless, apple growers from Kosolia, a neighboring country, plan to sell their apples in Ertland by selling Kosolia-grown apples at half the price of local apples and promoting them as a nourishing, low-cost alternative.

Which of the following, if true, casts most doubt on the viability of the plan by Kosolia's apple growers to sell their apples in Ertland?

(A) Most of the varieties of apples grown in Ertland were originally derived from common Kosolian varieties.
(B) Consumers in Ertland tend to spend about the same proportion of their income on fresh fruits and vegetables as do consumers in Kosolia.
(C) At times in the past, Ertland has exported significant quantities of apples to Kosolia.
(D) Some varieties of apples grown in Kosolia can be harvested throughout most of the year, whereas the varieties grown in Ertland can be harvested only during two months of the year.
(E) Profiles of Ertland-grown apples are high enough in Ertland that growers, wholesalers, and retailers there could easily afford to reduce the price at which these apples are sold.

答案E

-- by 会员 jac95 (2010/10/20 15:28:35)

首先这道题的目的是削弱kosolia’s apple growers的plan。看清楚这点后呢，就可以分析题干，题干说这个plan成功的条件是K可以降一半的价钱和有新鲜的口味。那么要削弱的话也要找准这两点下手，那么就是他降价没用，或者新鲜的口味没用。
选项里面关于口味的都不对，但是关于讲价的E选项呢，说的是在Erland的苹果供应商和零售商都能承受降价一半去销售他们的苹果，这样K的降价方案就完全不起作用了，因为E降价的话就跟K又是一样的了，那当地人还是依旧会选择E不会选择K。

橘子骨头

LZ逻辑是怎么练得呢？能分享下经验吗？~

-- by 会员 天使追梦 (2010/10/20 21:21:22)

我的逻辑其实没怎么练，刚开始上手的时候就不错。但是呢，我做完了旧prep 1,2里的逻辑，主要都错在了BF题，我BF题真的特别差。我自己在总结错题的时候，我有觉得仔细分析正确选项是很重要的，我就是很认真的分析了我错题的正确选项，我觉得逻辑题的正确选项都有其惯性，一致性。我希望你能多做题，多分析，这样你看到正确选项的那一刹那，真的就有种似曾相识的感觉，然后就能立马选了。

橘子骨头

GWD-24-16
which of the following most logically completes the argument below?

According to promotional material published by the city of Springfield, more tourists stay in hotels in Springfield than stay in the neighboring city of Harristown. A brochure from the largest hotel in Harristown claims that more tourists stay in that hotel than stay in the Royal Arms Hotel in Springfield. If both of these sources are accurate, however, the “Report on Tourism” for the region must be in error in stating that ———  .

A.    The average length of stay is longer at the largest hotel in Harristown than it is at the Royal Arms Hotel.
B.    There is only one hotel in Harristown that is larger than the Royal Arms Hotel.
C.    More tourists stay in hotels in Harristown than stay in the Royal Arms Hotel.
D.    The Royal Arms hotel is the largest hotel in Springfield
E.    The royal arms hotel is the only hotel in Springfield

我选的是E，答案又是B。我看了看B 也觉得好像是对的
请讲解讲解 谢谢啦

-- by 会员 jokystar (2010/10/20 23:58:11)

不好意思啊··我觉得你这道题是不是看错答案了呀，因为我也认为选E

如果E的条件成立， 那么springfield 的 旅游人数就等于Royal Arms Hotel里的旅客人数， 因为Royal Arms Hotel是该地方的唯一旅店
题目中又说Harristown的最大的hotel的人数比Royal Arms Hotel的旅客人数多，那么言下之意就是Harristown的旅客总人数一定比springfield 人数多。这显然与第一句话 “more tourists stay in hotels in Springfield than stay in the neighboring city of Harristown.”相矛盾
此题故选E
你可以再去确定一下答案。

jokystar

谢谢啦