问答

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[Critical Reasoning]

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题目：

In the United States, of the people who moved from one state to another when they retired, the percentage who retired to Florida has decreased by three percentage points over the past ten years.  Since many local businesses in Florida cater to retirees, this decline is likely to have a noticeably negative economic effect on these businesses.
 
Which of the following, if true, most seriously weakens the argument?

选项:

A、Florida attracts more people who move from one state to another when they retire than does any other state.
B、The number of people who move out of Florida to accept employment in other states has increased over the past ten years.
C、There are far more local businesses in Florida that cater to tourists than there are local businesses that cater to retirees.
D、The total number of people who retired and moved to another state for their retirement has increased significantly over the past ten years.
E、The number of people who left Florida when they retired to live in another state was greater last year than it was ten years ago.

答案:

D
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[Critical Reasoning]

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题目：

Increased use of incineration is sometimes advocated as a safe way to dispose of chemical waste. But opponents of incineration point to the 40 incidents involving unexpected releases of dangerous chemical agents that were reported just last year at two existing incinerators commissioned to destroy a quantity of chemical waste material. Since designs for proposed new incinerators include no additional means of preventing such releases, leaks will only become more prevalent if use of incineration increases.

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

选项:

A、At the two incinerators at which leaks were reported, staff had had only cursory training on the proper procedures for incinerating chemical waste.
B、Other means of disposing of chemical waste, such as chemical neutralization processes, have not been proven safer than incineration.
C、The capacity of existing incinerators is sufficient to allow for increased incineration of chemical waste without any need for new incinerators.
D、The frequency of reports of unexpected releases of chemical agents at newly built incinerators is about the same as the frequency at older incinerators.
E、In only three of the reported incidents of unexpected chemical leaks did the releases extend outside the property on which the incinerators were located.

答案:

A
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[Sentence Correction]

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题目：

To attract the most talented workers, some companies are offering a wider range of benefits, letting employees pick those most important to them.

选项:

答案:

A
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[Sentence Correction]

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题目：

It is unclear whether chimpanzees are unique among nonhuman species in their ability to learn behaviors from one another, or if, when other animals are studied in as much depth, similar patterns would be found.

选项:

A、 if, when other animals are studied in as much depth, similar patterns would be found
B、 if other animals were studied with as much depth they would exhibit similar patterns
C、 would similar patterns be found in other animals if they were studied in as much depth
D、 whether similar patterns would be exhibited in other animals that were studied with as much depth
E、 whether other animals would exhibit similar patterns if they were studied in as much depth

答案:

E
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[Sentence Correction]

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题目：

Hans Christian Andersen wrote fairy tales, which have been some of the most frequently translated works in literary history, while he wrote plays, novels, poems, and travel books, as well as several autobiographies, which remained almost unknown outside his native Denmark.
 

选项:

A、 Hans Christian Andersen wrote fairy tales, which have been some of the most frequently translated works in literary history, while he wrote plays, novels, poems, and travel books, as well as several autobiographies, which remained
B、 Hans Christian Andersen wrote fairy tales, which, while among the most frequently translated works in literary history, his plays, novels, poems, and travel books, as well as several autobiographies remain
C、 Even as Hans Christian Andersen's fairy tales have been among the most frequently translated works in literary history, still his plays, novels, poems, and travel books, as well as several autobiographies, remain
D、 Unlike the fairy tales written by Hans Christian Andersen, which are some of the most frequently translated works in literary history, he wrote plays, novels, poems, and travel books, as well as several autobiographies, which remained
E、 Although Hans Christian Andersen wrote fairy tales that are among the most frequently translated works in literary history, his plays, novels, poems, and travel books, as well as several autobiographies, remain

答案:

E
6答疑

[Reading Comprehension]

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文章：

The general density dependence model can be applied to explain the founding of specialist firms (those attempting to serve a narrow target market).  According to this model, specialist foundings hinge on the interplay between legitimation and competitive forces, both of which are functions of the density (total number) of firms in a particular specialist population.  Legitimation occurs as a new type of firm moves from being viewed as unfamiliar to being viewed as a natural way to organize.  At low density levels, each founding increases legitimation, reducing barriers to entry and easing subsequent foundings.  Competition occurs because the resources that firms seek--customers, suppliers, and employees--are limited, but as long as density is low relative to plentiful resources, the addition of another firm has a negligible impact on the intensity of competition.  At high density levels, however, competitive effects outweigh legitimation effects, discouraging foundings.  The more numerous the competitors, the fiercer the competition will be and the smaller will be the incentive for new firms to enter the field.
 
While several studies have found a significant correspondence between the density dependence model and actual patterns of foundings, other studies have found patterns not consistent with the model.  A possible explanation for this inconsistency is that legitimation and competitive forces transcend national boundaries, while studies typically restrict their analysis to the national level.  Thus a national-level analysis can understate the true legitimation and competitive forces as well as the number of foundings in an industry that is internationally integrated.  Many industries are or are becoming international, and since media and information easily cross national borders, so should legitimation and its effects on overseas foundings.  For example, if a type of firm becomes established in the United States, that information transcends borders, reduces uncertainties, and helps foundings of that type of firm in other countries.  Even within national contexts, studies have found more support for the density dependence model when they employ broader geographic units of analysis--for example, finding that the model's operation is seen more clearly at the state and national levels than at city levels.

题目：

The primary purpose of the passage is to

选项:

A、question the validity of an economic model
B、point out some inconsistencies within an economic model
C、outline an economic model and suggest revisions to it
D、describe an economic model and provide specific examples to illustrate its use
E、explain why an economic model remains valid despite inconsistent research results

答案:

E
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[Critical Reasoning]

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题目：

Debater: The average amount of overtime per month worked by an employee in the manufacturing division of the Haglut Corporation is 14 hours. Most employees of the Haglut Corporation work in the manufacturing division. Furthermore, the average amount of overtime per month worked by any employee in the company generally does not fluctuate much from month to month. Therefore, each month, most employees of the Haglut Corporation almost certainly work at least some overtime.

The debater's argument is most vulnerable to criticism on which of these grounds?

选项:

A、It takes for granted that the manufacturing division is a typical division of the corporation with regard to the average amount of overtime its employees work each month.
B、It takes for granted that if a certain average amount of overtime is worked each month by each employee of the Haglut Corporation, then approximately the same amount of overtime must be worked each month by each employee of the manufacturing division.
C、It confuses a claim from which the argument's conclusion about the Haglut Corporation would necessarily follow with a claim that would follow from the argument's conclusion only with a high degree of probability.
D、It overlooks the possibility that even if, on average, a certain amount of overtime is worked by the members of some group, many members of that group may work no overtime at all.
E、It overlooks the possibility that even if most employees of the corporation work some overtime each month, any one corporate employee may, in some months, work no overtime.

答案:

D
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[Sentence Correction]

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题目：

Scientists have recently found evidence that black holes—regions of space in which matter is so concentrated and the pull of gravity so powerful that nothing, not even light, can emerge from them— probably exist at the core of nearly all galaxies and the mass of each black hole is proportional to its host galaxy.

选项:

A、exist at the core of nearly all galaxies and the mass of each black hole is proportional to
B、exist at the core of nearly all galaxies and that the mass of each black hole is proportional to that of
C、exist at the core of nearly all galaxies, and that the mass of each black hole is proportional to
D、exists at the core of nearly all galaxies, and that the mass of each black hole is proportional to that of
E、exists at the core of nearly all galaxies and the mass of each black hole is proportional to that of

答案:

B
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[Critical Reasoning]

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题目：

The heavy traffic in Masana is a growing drain on the city’s economy—the clogging of the streets of the central business district alone cost the economy more than $1.2 billion over the past year. In order to address this problem, officials plan to introduce congestion pricing, by which drivers would pay to enter the city’s most heavily trafficked areas during the busiest times of the day.

Which of the following, if true, would most strongly indicate that the plan will be a success?

选项:

答案:

C
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[Sentence Correction]

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题目：

Until a few centuries ago, any large bones discovered in the fields or caves of Europe, now known to be large prehistoric animals, were usually assumed to be the remains of giants and were often displayed as curiosities in castles, palaces, town halls, churches, and monasteries.

选项:

A、now known to be large prehistoric animals, were usually assumed to be
B、presently known as from large prehistoric animals, were usually assumed as
C、bones now known to be those of large prehistoric animals, were usually assumed to be
D、bones known at present as of large prehistoric animals, were usually assumed as those of
E、currently known as those of large prehistoric animals, were usually assumed to be those of

答案:

C
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437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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1476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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1659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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630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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1453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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1027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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683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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701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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165004浏览

[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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172118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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