问答

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[Reading Comprehension]

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文章：

Line         Among the myths taken as fact by the
  environmental managers of most corporations is
  the belief that environmental regulations affect all
  competitors in a given industry uniformly. In reality,
(5) regulatory costs—and therefore compliance—
  fall unevenly, economically disadvantaging some
  companies and benefiting others. For example, a
  plant situated near a number of larger
  noncompliant competitors is less likely to attract
(10) the attention of local regulators than is an isolated
  plant, and less attention means lower costs.
       Additionally, large plants can spread compliance
  costs such as waste treatment across a larger
  revenue base; on the other hand, some smaller
(15) plants may not even be subject to certain
  provisions such as permit or reporting
  requirements by virtue of their size. Finally, older
  production technologies often continue to generate
  toxic wastes that were not regulated when the
(20) technology was first adopted. New regulations
  have imposed extensive compliance costs on
  companies still using older industrial coal-fired
  burners that generate high sulfur dioxide and
  nitrogen oxide outputs, for example, whereas new
(25) facilities generally avoid processes that would
  create such waste products. By realizing that they
  have discretion and that not all industries are
  affected equally by environmental regulation,
  environmental managers can help their companies
(30) to achieve a competitive edge by anticipating
  regulatory pressure and exploring all possibilities for
  addressing how changing regulations will affect their
  companies specifically.


题目：

Which of the following best describes the relationship of the statement about large plants (lines 12–17) to the passage as a whole?

选项:

A、It presents a hypothesis that is disproved later in the passage.
B、It highlights an opposition between two ideas mentioned in the passage.
C、It provides examples to support a claim made earlier in the passage.
D、It exemplifies a misconception mentioned earlier in the passage.
E、It draws an analogy between two situations described in the passage.

答案:

C
2答疑

[Critical Reasoning]

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题目：

The difference in average annual income in favor of employees who have college degrees, compared with those who do not have such degrees, doubled between 1980 and 1990. Some analysts have hypothesized that increased competition between employers for employees with college degrees drove up income for such employees.

Which of the following, if true, most seriously undermines the explanation described above?

选项:

A、During the 1980s a growing percentage of college graduates, unable to find jobs requiring a college degree, took unskilled jobs.
B、The average age of all employees increased slightly during the 1980s.
C、The unemployment rate changed very little throughout most of the 1980s.
D、From 1980 to 1990 the difference in average income between employees with advanced degrees and those with bachelor’s degrees also increased.
E、During the 1980s there were some employees with no college degree who earned incomes comparable to the top incomes earned by employees with a college degree.

答案:

A
2答疑

[Data Sufficiency]

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题目：

If x and y are positive integers and r is the remainder when is divided by 10, what is the value of r ?
(1) x = 25
(2)  y = 1

选项:

答案:

B
2答疑

[Problem Solving]

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题目：

Of the 150 houses in a certain development, 60 percent have air- conditioning, 50 percent have a sunporch, and 30 percent have a swimming pool. If 5 of the houses have all three of these amenities and 5 have none of them, how many of the houses have exactly two of these amenities?

选项:

A、10
B、45
C、50
D、55
E、65

答案:

D
2答疑

[Sentence Correction]

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题目：

Obtaining an investment-grade rating will keep the county's future borrowing costs low, protect its already-tattered image, and increase its ability to buy bond insurance.

选项:

A、 Obtaining an investment-grade rating will keep the county's future borrowing costs low, protect
B、 To obtain an investment-grade rating will keep the county's future borrowing costs low, and protect
C、 Having obtained an investment-grade rating will, in keeping the county's future borrowing costs low, protect
D、 To obtain an investment-grade rating would keep the county's future borrowing costs low, protecting
E、 Obtaining an investment-grade rating, keeping the county's borrowing costs low, would be protecting

答案:

A
2答疑

[Reading Comprehension]

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文章：

Dendrochronology, the study of tree-ring records to glean information about the past, is possible because each year a tree adds a new layer of wood between the existing wood and the bark.  In temperate and subpolar climates, cells added at the growing season's start are large and thin-walled, but later the new cells that develop are smaller and thick-walled; the growing season is followed by a period of dormancy.  When a tree trunk is viewed in cross section, a boundary line is normally visible between the small-celled wood added at the end of the growing season in the previous year and the large-celled spring wood of the following year's growing season.  The annual growth pattern appears as a series of larger and larger rings.  In wet years rings are broad; during drought years they are narrow, since the trees grow less.  Often, ring patterns of dead trees of different, but overlapping, ages can be correlated to provide an extended index of past climate conditions.
 
However, trees that grew in areas with a steady supply of groundwater show little variation in ring width from year to year; these "complacent" rings tell nothing about changes in climate.  And trees in extremely dry regions may go a year or two without adding any rings, thereby introducing uncertainties into the count.  Certain species  sometimes add more than one ring in a single year, when growth halts temporarily and then starts again.

题目：

The passage is primarily concerned with

选项:

A、evaluating the effect of climate on the growth of trees of different species
B、questioning the validity of a method used to study tree-ring records
C、explaining how climatic conditions can be deduced from tree-ring patterns
D、outlining the relation between tree size and cell structure within the tree
E、tracing the development of a scientific method of analyzing tree-ring patterns

答案:

C
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[Sentence Correction]

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题目：

Often visible as smog, ozone is formed in the atmosphere from hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight.

选项:

A、 ozone is formed in the atmosphere from
B、 ozone is formed in the atmosphere when
C、 ozone is formed in the atmosphere, and when
D、 ozone, formed in the atmosphere when
E、 ozone, formed in the atmosphere from

答案:

B
2答疑

[Data Sufficiency]

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题目：

If a building has 6,000 square meters of floor space, how many offices are in the building?
  1. Exactly of the floor space is not used for offices.
  2. There are exactly 20 executive offices and each of these occupies 3 times as much floor space as the average for all of the remaining offices.

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:

E
2答疑

[Reading Comprehension]

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文章：

    Extensive research has shown that the effects of short-term price promotions on sales are themselves short-term. Companies' hopes that promotions might have a positive aftereffect have not been borne out for reasons that researchers have been able to identify. A price promotion entices only a brand's long-term or "loyal" customers; people seldom buy an unfamiliar brand merely because the price is reduced. They simply avoid paying more than they have to when one of their customary brands is temporarily available at a reduced price. A price promotion does not increase the number of long-term customers of a brand, as it attracts virtually no new customers in the first place. Nor do price promotions have lingering aftereffects for a brand, even negative ones such as damage to a brand's reputation or erosion of customer loyalty, as is often feared.

    So why do companies spend so much on price promotions? Clearly price promotions are generally run at a loss, otherwise there would be more of them. And the bigger the increase in sales at promotion prices, the bigger the loss. While short-term price promotions can have legitimate uses, such as reducing excess inventory, it is the recognizable increase in sales that is their main attraction to management, which is therefore reluctant to abandon this strategy despite its effect on the bottom line.

题目：

According to the passage, which of the following is the reason why short-term price promotions do not attract new long-term customers to a brand?

选项:

A、Short-term price promotions do not produce an increase in sales.
B、Customers come to regard the promotional price as the fair price and the regular price as excessive.
C、Most customers select among competing products largely on the basis of price and very few are loyal to any particular brand.
D、Customers who have not previously bought the promoted brand are almost never persuaded to do so by the short-term price promotions.
E、Any customers that a brand gains by means of a short-term price promotion are liable to be lost when a competing brand has a similar promotion.

答案:

D
2答疑

[Data Sufficiency]

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题目：

What is the greatest common divisor of positive integers m and n ?
(1)m is a prime number.
(2)2n = 7m

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:

C
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1136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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3235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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3578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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1186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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2730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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1878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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1206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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1262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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300187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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307314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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