问答

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[Problem Solving]

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题目：

A rectangular photograph is surrounded by a border that is 1 inch wide on each side. The total area of the photograph and the border is M  square inches.  If the border had been 2 inches wide on each side, the total area would have been (M + 52) square inches.  What is the perimeter of the photograph, in inches?

选项:

A、34
B、36
C、38
D、40
E、42

答案:

D
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[Critical Reasoning]

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题目：

For similar cars and comparable drivers, automobile insurance for collision damage has always cost more in Greatport than in Fairmont. Police studies, however, show that cars owned by Greatport residents are, on average, slightly less likely to be involved in a collision than cars in Fairmont. Clearly, therefore, insurance companies are making a greater profit on collision-damage insurance in Greatport than in Fairmont.

In evaluating the argument, it would be most useful to compare

选项:

A、the level of traffic congestion in Greatport with the level of traffic congestion in Fairmont
B、the cost of repairing collision damage in Greatport with the cost of repairing collision damage in Fairmont
C、the rates Greatport residents pay for other forms of insurance with the rates paid for similar insurance by residents of Fairmont
D、the condition of Greatport's roads and streets with the condition of Fairmont's roads and streets
E、the cost of collision-damage insurance in Greatport and Fairmont with that in other cities

答案:

B
1答疑

[Data Sufficiency]

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题目：

选项:

A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are NOT sufficient.

答案:

D
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[Critical Reasoning]

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题目：

In the past year Harborville has had an unusually high rate of new cases of a certain disease.  An investigation revealed that over the past five years Harborville's public water supply has had a high level of pollutants.  Medical researchers have hypothesized that Harborville's water is responsible for the high rate of new cases of the disease.
Each of the following, if true, provides additional support for the researchers' hypothesis EXCEPT:

选项:

A、Most of the people afflicted with new cases of the disease had regularly drunk larger quantities of Harborville's water than had other Harborville residents.
B、The same type of pollutants that were found in Harborville's water have independently been linked to occurrences in other towns of high rates of the disease.
C、Some of the people with newly diagnosed cases of the disease began to develop the disease before Harborville's water became polluted.
D、The rate of new cases of the disease among residents of Harborville who get their water from private sources is not unusually high.
E、 Towns with geographic and demographic characteristics similar to those of Harborville but without polluted water do not have as high a rate of the disease as does Harborville.

答案:

C
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[Reading Comprehension]

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题目：

Which of the following can be inferred regarding the "gender ideology" mentioned in the highlighted text?

选项:

A、It prevented women from making significant contributions to the establishment of industrial unions.
B、It resulted from the marginalization of women in industrial unions.
C、It had a significant effect on the advancement of women's issues within industrial unions.
D、Its primary tenets were nondiscrimination and inclusion.
E、Its effects were mitigated by the growth of industrial unions.

答案:

C
1答疑

[Data Sufficiency]

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题目：

If s4v3x7 < 0, is svx < 0?
(1)     v < 0
(2)     x > 0

选项:

答案:

E
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[Critical Reasoning]

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题目：

Aroca City currently funds its public schools through taxes on property.  In place of this system, the city plans to introduce a sales tax of three percent on all retail sales in the city.  Critics protest that three percent of current retail sales falls short of the amount raised for schools by property taxes.  The critics are correct on this point.  Nevertheless, implementing the plan will probably not reduce the money going to Aroca's schools.  Several large retailers have selected Aroca City as the site for huge new stores, and these are certain to draw large numbers of shoppers from neighboring municipalities, where sales are taxed at rates of six percent and more.  In consequence, retail sales in Aroca City are bound to increase substantially.
 
In the argument given, the two potions in boldface play which of the following roles?

选项:

A、The first presents a plan that the argument seeks to defend against a certain criticism; the second gives part of the basis for that criticism.
B、The first presents a plan that the argument seeks to defend against a certain criticism; the second gives part of the basis for that defense.
C、The first presents a plan that the argument criticizes; the second is a consideration raised by the argument in support of that criticism.
D、The first presents a plan that the argument criticizes; the second presents a consideration that has been raised against that criticism.
E、The first presents a plan whose consequences the argument seeks to evaluate; the second is presented by the argument as one likely consequence that is undesirable.

答案:

B
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[Reading Comprehension]

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文章：

题目：

The passage suggests which of the following about the identification of a species as a keystone species?

选项:

A、Such an identification depends primarily on the species' relationship to the dominant species.
B、Such an identification can best be made by removing the species from a particular ecosystem and observing changes that occur in the ecosystem.
C、Such an identification is likely to be less reliable as an ecosystem becomes less diverse.
D、Such an identification seems to depend on various factors within the ecosystem.
E、Such an identification can best be made by observing predation behavior.

答案:

D
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[Critical Reasoning]

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题目：

Consumers planning to buy recreational equipment tend to buy higher quality, more expensive equipment when the economy is strong than when it is weak. Hill and Dale is a business that sells high-quality, expensive camping and hiking equipment in Boravia. Although all the signs are that Boravia's economy is now entering a period of sustained strength, the managers of the business do not expect a substantial increase in sales.

Which of the following, if true, would provide the strongest justification for the managers' judgment?

选项:

A、A significant proportion of Hill and Dale's sales are made to customers who enter the store in order to buy one particular item but, once there, find other items to buy as well.
B、In Boravia when the economy is strong, those who might otherwise go camping tend to take vacations overseas.
C、The economic upturn is likely to allow Boravia's national parks, where most of the camping and hiking is done, to receive extra funding to improve their visitor facilities.
D、Advances in materials technology have led to the development of hiking and camping equipment that is more comfortable and lightweight than before.
E、Many people in Boravia not only are committed to preserving the country's wilderness areas but also are interested in spending some time in them.

答案:

B
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[Problem Solving]

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题目：

If A@B=A^2+B^2 for all real numbers A and B. then (A@B)@C=

选项:

A、A^2+B^2+C^2
B、2A^2+2B^2+C^2
C、A^4+B^4+C^2
D、A^4+B^4+2A^2B^2+C^2

答案:

D
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334浏览

[Undefined]

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Art historian: Unlike many artistic traditions that sought to depict plants native to the local area in a seasonally appropriate way (for example, depicting scenes of spring with the plants in the appropriate stages of development for that season), seventeenth-century Dutch artists specializing in flower paintings almost exclusively chose to depict exotic species of flowers from outside the local area. Painting such species was worthwhile primarily because the art-buying public had developed a strong preference for images of the exotic. The great botanical centers of the time gave the artists direct access to such flowers, which the artists would freely combine in a single painting, regardless of whether the combined species occurred together in the wild, and depicted each in full bloom, regardless of whether those species bloomed at the same time in nature.

Statement: The art historian makes the point that the species of flowers these Dutch artists chose to paint were 1 largely because the species were 2 .

Select for 1 and for 2 the options that complete the statement so that it is most strongly supported by the information provided. Make only two selections, one in each column.
我选的CE，和EC有什么区别？怎么选出EC的？
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1289浏览

[Undefined]

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An unusually severe winter occurred in Europe after the continent was blanketed by a blue haze resulting from the eruption of the Laki Volcano in the European republic of Iceland in the summer of 1984.  Thus, it is evident that major eruptions cause the atmosphere to become cooler than it would be otherwise.
Which of the following statements, if true, most seriously weakens the argument above?
C选项为什么就不会有张冠李戴的问题呢，1984和1982的气候情况能一样吗，C里的火山就可以试用于原文的火山吗
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1467浏览

[Undefined]

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The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100 percent, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?
为什么这个题一定是相乘不能是相加呢？y=k1A方-k2B （k1,k2大于0 ），也满足题目说的与A方成正比与B成反比啊？但是这道题只有相乘的情况才能选出正确答案
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565浏览

[Undefined]

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Tiger beetles are such fast runners that they can capture virtually any nonflying insect.  However, when running toward an insect, the beetles intermittently stop, and then, a moment later, resume their attack.  Perhaps they cannot maintain their pace and must pause for a moment's rest; but an alternative hypothesis is that while running tiger beetles are unable to process the resulting rapidly changing visual information, and so quickly go blind and stop.
 
Which of the following, if discovered in experiments using artificially moved prey insects, would support one of the two hypotheses and undermine the other?
答案C是怎么支持一个猜想又削弱另一个猜想的？
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1318浏览

[GWD]

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The author of the passage implies that which of the following is a possible partial explanation for acquisition behavior during the 1970's and 1980's?
请解释这道题为什么不选C或E，除了正确选项B，我认为文中也正确地提到了这两个选项可以解释acquisition behavior during 1970s and 80s
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941浏览

[OG]

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The primary purpose of the passage is to
为什么选E不选B
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631浏览

[Undefined]

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Club X has more than 10 but fewer than 40 members. Sometimes the members sit at tables with 3 members at one table and 4 members at each of the other tables, and sometimes they sit at tables with 3 members at one table and 5 members at each of the other tables. If they sit at tables with 6 members at each table except one and fewer than 6 members at that one table, how many members will be at the table that has fewer than 6 members?
提问小梅老师 这道题求讲一下 我没什么思路 带入数字得的是3
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637浏览

[Undefined]

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A photography dealer ordered 60 Model X cameras to be sold for $250 each, which represents a 20 percent markup over the dealer's initial cost for each camera. Of the cameras ordered, 6 were never sold and were returned to the manufacturer for a refund of 50 percent of the dealer's initial cost. What was the dealer's approximate profit or loss as a percent of the dealer's initial cost for the 60 cameras?
请问小梅老师 这道题讲讲一下 我算的是19% 原来成本是200每个 亏了6个 每个亏100. 最后得不出答案
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[Undefined]

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Analytical!
请问may老师，这题该用什么思路来做？
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157952浏览

[Undefined]

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Analytical!
请问张老师，这道题为什么D不对？我有我觉得second paragraph最后一句话特别指向D
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