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题目：

A scrub jay can remember when it cached a particular piece of food in a particular place, researchers have discovered, and tend not to bother to recover a perishable treat if stored long enough to have rotted.

选项:

A、tend not to bother to recover a perishable treat if
B、they tend not to bother recovering a perishable treat
C、tending not to bother to recover a perishable treat it
D、tends not to bother recovering a perishable treat
E、tends not bothering to recover a perishable treat it

答案:

D
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[Critical Reasoning]

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题目：

Editorial: Our city's public transportation agency is facing a budget shortfall. The fastest growing part of the budget has been employee retirement benefits, which are exceptionally generous. Unless the budget shortfall is resolved, transportation service will be cut, and many transportation employees will lose their jobs. Thus, it would be in the employees’ best interest for their union to accept cuts in retirement benefits.

Which of the following is an assumption the editorial's argument requires?

选项:

A、The transportation employees’ union should not accept cuts in retirement benefits if doing so would not be in the employees’ best interest.
B、The only feasible way for the agency to resolve the budget shortfall would involve cutting transportation service and eliminating jobs.
C、Other things being equal, it is in the transportation employees’ interest to have exceptionally generous retirement benefits.
D、Cutting the retirement benefits would help resolve the agency's budget shortfall.
E、The transportation employees’ union will not accept cuts in retirement benefits if doing so will not allow more transportation employees to keep their jobs.

答案:

D
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题目：

A study published in the British Medical Journal showed that women who ate nuts more than five times a week were about one third less likely to suffer from coronary heart disease as those who ate no nuts at all.

选项:

A、as those who ate
B、as women who ate
C、as those eating
D、than women eating
E、than were those who ate

答案:

E
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[Problem Solving]

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题目：

In Town X, 64 percent of the population are employed, and 48 percent of the population are employed males.  What percent of the employed people in Town X are females?

选项:

A、 16%
B、 25%
C、 32%
D、 40%
E、 52%

答案:

B
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题目：

As its sales of computer products have surpassed those of measuring instruments, the company has become increasingly willing to compete for the mass market sales they would in the past have conceded to rivals.

选项:

A、they would in the past have conceded to rivals
B、they would have conceded previously to their rivals
C、that in the past would have been conceded previously to rivals
D、it previously would have conceded to rivals in the past
E、it would in the past have conceded to rivals

答案:

E
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题目：

Yellow jackets number among the 900 or so species of the world’s social wasps, wasps living in a highly cooperative and organized society where they consist almost entirely of females—the queen and her sterile female workers.

选项:

A、wasps living in a highly cooperative and organized society where they consist almost entirely of
B、wasps that live in a highly cooperative and organized society consisting almost entirely of
C、which means they live in a highly cooperative and organized society, almost all
D、which means that their society is highly cooperative, organized, and it is almost entirely
E、living in a society that is highly cooperative, organized, and it consists of almost all

答案:

B
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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：

According to the passage, which of the following statements about sulfur dioxide and nitrogen oxide outputs is true?

选项:

A、Older production technologies cannot be adapted so as to reduce production of these outputs as waste products.
B、Under the most recent environmental regulations, industrial plants are no longer permitted to produce these outputs.
C、Although these outputs are environmentally hazardous, some plants still generate them as waste products despite the high compliance costs they impose.
D、Many older plants have developed innovative technological processes that reduce the amounts of these outputs generated as waste products.
E、Since the production processes that generate these outputs are less costly than alternative processes, these less expensive processes are sometimes adopted despite their acknowledged environmental hazards.

答案:

C
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题目：

Whereas lines of competition are clearly defined in the more established industries, in the Internet industry they are blurred and indistinct, as companies that compete one day may be partners the next.

选项:

A、Whereas lines of competition are clearly defined in the more established industries, in the Internet industry they are blurred and indistinct, as companies that compete
B、Although the lines of competition are clearly defined in industries that are more established, they are blurred and indistinct in the Internet industry, as competing companies
C、The lines of competition are clearly defined in the more established industries, unlike the Internet where they are blurred and indistinct, as companies that compete
D、Unlike more established industries, where the lines of competition are clearly defined, they are burred and indistinct in the Internet industry, as companies that compete
E、Unlike more established industries, with clearly defined lines of competition, those of the Internet industry are blurred and indistinct, as competing companies

答案:

A
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题目：

Like Rousseau, Tolstoi rebelled against the unnatural complexity of human relations in modern society.

选项:

A、 Like Rousseau, Tolstoi rebelled
B、 Like Rousseau, Tolstoi's rebellion was
C、 As Rousseau, Tolstoi rebelled
D、 As did Rousseau, Tolstoi's rebellion was
E、 Tolstoi's rebellion, as Rousseau's, was

答案:

A
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[Critical Reasoning]

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题目：

Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens.  Both cattle and chickens raised for meat are often fed the type of feed that transmits the virus that causes the disease.  Animals infected with the virus take more than a year to develop symptoms of Lofgren's disease, however, and chickens commercially raised for meat, unlike cattle, are generally brought to market during their first year of life.
 
Which of the following is most strongly supported by the information provided?

选项:

A、The virus that causes Lofgren's disease cannot be transmitted to human beings by chickens.
B、There is no way to determine whether a chicken is infected with the Lofgren's disease virus before the chicken shows symptoms of the disease.
C、A failure to observe Lofgren's disease in commercial chicken populations is not good evidence that chickens are immune to the virus that causes this disease.
D、An animal that has been infected with the virus that causes Lofgren's disease but that has not developed symptoms cannot transmit the disease to an uninfected animal of the same species.
E、The feed that chickens and cattle are fed is probably not the only source of the virus that causes Lofgren's disease.

答案:

C
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[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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[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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2634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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[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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[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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[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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[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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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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Analytical!
请问may老师，这题该用什么思路来做？
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[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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