问答

2答疑

[Critical Reasoning]

试题详情

题目:

The chemical adenosine is released by brain cells when those cells are active. Adenosine then binds to more and more sites on cells in certain areas of the brain, as the total amount released gradually increases during wakefulness. During sleep, the number of sites to which adenosine is bound decreases. Some researchers have hypothesized that it is the cumulative binding of adenosine to a large number of sites that causes the onset of sleep.
 
Which of the following, if true, provides the most support for the researchers' hypothesis?

选项:

A、Even after long periods of sleep when adenosine is at its lowest concentration in the brain, the number of brain cells bound with adenosine remains very large.
B、Caffeine, which has the effect of making people remain wakeful, is known to interfere with the binding of adenosine to sites on brain cells.
C、Besides binding to sites in the brain, adenosine is known to be involved in biochemical reactions throughout the body.
D、Some areas of the brain that are relatively inactive nonetheless release some adenosine.
E、Stress resulting from a dangerous situation can preserve wakefulness even when brain levels of bound adenosine are high.

答案:

B
2答疑

[Reading Comprehension]

试题详情

文章:

    Linda Kerber argued in the mid-1980's that after the American Revolution (1775-1783), an ideology of "republican motherhood" resulted in a surge of educational opportunities for women in the United States. Kerber maintained that the leaders of the new nation wanted women to be educated in order to raise politically virtuous sons. A virtuous citizenry was considered essential to the success of the country's republican form of government; virtue was to be instilled not only by churches and schools, but by families, where the mother's role was crucial. Thus, according to Kerber, motherhood became pivotal to the fate of the republic, providing justification for an unprecedented attention to female education.

    Introduction of the republican motherhood thesis dramatically changed historiography. Prior to Kerber's work, educational historians barely mentioned women and girls; Thomas Woody's 1929 work is the notable exception. Examining newspaper advertisements for academies. Woody found that educational opportunities increased for both girls and boys around 1750. pointing to "An Essay on Woman" (1753) as reflecting a shirt in view. Woody also claimed that practical education for females had many advocates before the Revolution, Woody's evidence challenges the notion that the Revgolution changed attiludes regarding female education, although it may have accelerated earlier trends. Historians' reliance on Kerber's "republican mother hood" thesis may have obscured the presence of these trends, making it difficult to determine to what extent the Revolution really changed women's lives.

题目:

According to the passage. Kerber argued That political leaders thought that the form Of government adopted by the United States After the American Revolution depended on Which of the following for its success?

选项:

A、Women assuming the sole responsi-bility for instilling political virtue in Children.
B、Girls becoming the primary focus of A reformed educational system that emphasized political virtue
C、The family serving as one of the pri-Mary means by which children were Imbued with political virtue
D、The family assuming many of the Functions previously performed by Schools and churches.
E、Men and women assuming equal responsibility for the management of schools, churches, and the family

答案:

C
2答疑

[Sentence Correction]

试题详情

题目:

Blaming its recent troubles on a widening recession and slow rate of technology spending, the computer company announced that it would cut 10 percent of its workforce--more than 2,000 jobs--and expected to report a loss in its third quarter.

选项:

A、company announced that it would cut 10 percent of its workforce--more than 2,000 jobs--and expected to report a
B、company announced that there would be a cut--10 percent of its workforce, which was more than 2,000 jobs--and expected a reported
C、company announced the cutting of its workforce by 10 percent, more than 2,000 jobs, and it expected a reported
D、company's announcement included the cutting of its workforce by 10 percent, or more than 2,000 jobs, and expecting to report a
E、company's announcement included cutting its workforce--which is more than 2,000 jobs--and expecting there to be a reported

答案:

A
2答疑

[Reading Comprehension]

试题详情

文章:

    Many managers are influenced by dangerous myths about pay that lead to counterproductive decisions about how their companies compensate employees. One such myth is that labor rates, the rate per hour paid to workers, are identical with labor costs, the money spent on labor in relation to the productivity of the labor force. This myth leads to the assumption that a company can simply lower its labor costs by cutting wages. But labor costs and labor rates are not in fact the same: one company could pay its workers considerably more than another and yet have lower labor costs if that company's productivity were higher due to the talent of its workforce, the efficiency of its work processes, or other factors. The confusion of costs with rates persists partly because labor rates are a convenient target for managers who want to make an impact on their company's budgets. Because labor rates are highly visible, managers can easily compare their company's rates with those of competitors. Furthermore, labor rates often appear to be a company's most malleable financial variable: cutting wages appears an easier way to control costs than such options as reconfiguring work processes or altering product design.

    The myth that labor rates and labor costs are equivalent is supported by business journalists, who frequently confound the two. For example, prominent business journals often remark on the "high" cost of German labor, citing as evidence the average amount paid to German workers. The myth is also perpetuated by the compensation consulting industry, which has its own incentives to keep such myths alive. First, although some of these consulting firms have recently broadened their practices beyond the area of compensation, their mainstay continues to be advising companies on changing their compensation practices. Suggesting that a company's performance can be improved in some other way than by altering its pay system may be empirically correct but contrary to the consultants' interests. Furthermore, changes to the compensation system may appear to be simpler to implement than changes to other aspects of an organization, so managers are more likely to find such advice from consultants palatable. Finally, to the extant that changes in compensation create new problems, the consultants will continue to have work solving the problems that result from their advice.

题目:

The author of the passage mentions business journals (in the highlighted text) primarily in order to

选项:

A、demonstrate how a particular kind of evidence can be used to support two different conclusions
B、cast doubt on a particular view about the average amount paid to German workers
C、suggest that business journalists may have a vested interest in perpetuating a particular view
D、identify one source of support for a view common among business managers
E、indicate a way in which a particular myth could be dispelled

答案:

D
2答疑

[Reading Comprehension]

试题详情

文章:

According to P. F. Drucker, the management philosophy known as Total Quality Management (TQM), which is designed to be adopted consistently throughout an organization and to improve customer service by using sampling theory to reduce the variability of a product's quality, can work successfully in conjunction with two older management systems.  As Drucker notes, TQM's scientific approach is consistent with the statistical sampling techniques of the "rationalist" school of scientific management, and the organizational structure associated with TQM is consistent with the social and psychological emphases of the "human relations" school of management.
 
However, TQM cannot simply be grafted onto these systems or onto certain other non-TQM management systems.  Although, as Drucker contends, TQM shares with such systems the ultimate objective of increasing profitability, TQM requires fundamentally different strategies.  While the other management systems referred to use upper management decision-making and employee specialization to maximize shareholder profits over the short term, TQM envisions the interests of employees, shareholders, and customers as convergent.  For example, lower prices not only benefit consumers but also enhance an organization's competitive edge and ensure its continuance, thus benefiting employees and owners.  TQM's emphasis on shared interests is reflected in the decentralized decision-making, integrated production activity, and lateral structure of organizations that achieve the benefits of TQM.

题目:

The primary purpose of the passage is to

选项:

A、point out contradictions in a new management system
B、compare and contrast the objectives of various management systems
C、identify the organizational features shared by various management systems
D、explain the relationship of a particular management system to certain other management systems
E、explain the advantages of a particular management system over certain other management systems

答案:

D
2答疑

[Problem Solving]

试题详情

题目:

The residents of Town X participated in a survey to determine the number of hours per week each resident spent watching television. The distribution of the results of the survey had a mean of 21 hours and a standard deviation of 6 hours. The number of hours that Pat, a resident of Town X, watched television last week was between 1 and 2 standard deviations below the mean. 
Which of the following could be the number of hours that Pat watched television last week?

选项:

A、30 
B、20 
C、18 
D、12 
E、6

答案:

D
2答疑

[Critical Reasoning]

试题详情

题目:

Vargonia has just introduced a legal requirement that student-teacher ratios in government-funded schools not exceed a certain limit. All Vargonian children are entitled to education, free of charge, in these schools. When a recession occurs and average incomes fall, the number of children enrolled in government-funded schools tends to increase. Therefore, though most employment opportunities contract in economic recessions, getting a teaching job in Vargonia’s government-funded schools will not be made more difficult by a recession.

Which of the following would be most important to determine in order to evaluate the argument?

选项:

A、Whether in Vargonia there are any schools not funded by the government that offer children an education free of charge
B、Whether the number of qualified applicants for teaching positions in government-funded schools increases significantly during economic recessions
C、What the current student-teacher ratio in Vargonia’s government-funded schools is
D、What proportion of Vargonia’s workers currently hold jobs as teachers in government-funded schools
E、Whether in the past a number of government-funded schools in Vargonia have had student-teacher ratios well in excess of the new limit

答案:

B
2答疑

[Reading Comprehension]

试题详情

文章:

Line        When asteroids collide, some collisions cause
 an asteroid to spin faster; others slow it down. If
 asteroids are all monoliths—single rocks—undergoing
 random collisions, a graph of their rotation rates
(5)should show a bell-shaped distribution with statistical
 “tails” of very fast and very slow rotators. If asteroids
 are rubble piles, however, the tail representing the
 very fast rotators would be missing, because any
 loose aggregate spinning faster than once every few
(10)hours (depending on the asteroid’s bulk density)
 would fly apart. Researchers have discovered that
 all but five observed asteroids obey a strict limit on
 rate of rotation. The exceptions are all smaller than
 200 meters in diameter, with an abrupt cutoff for
(15)asteroids larger than that.
      The evident conclusion—that asteroids larger than
 200 meters across are multicomponent structures
 or rubble piles—agrees with recent computer modeling
 of collisions, which also finds a transition at that
(20)diameter. A collision can blast a large asteroid to bits,
 but after the collision those bits will usually move
 slower than their mutual escape velocity. Over several
 hours, gravity will reassemble all but the fastest
 pieces into a rubble pile. Because collisions among
(25)asteroids are relatively frequent, most large bodies
 have already suffered this fate. Conversely, most
 small asteroids should be monolithic, because impact
 fragments easily escape their feeble gravity.


题目:

The discovery of which of the following would call into question the conclusion mentioned in line 16?

选项:

答案:

D
2答疑

[Reading Comprehension]

试题详情

文章:

Jon Clark’s study of the effect of the modernization of a telephone exchange on exchange maintenance work and workers is a solid contribution to a debate that encompasses two lively issues in the history and sociology of technology: technological determinism and social constructivism.

Clark makes the point that the characteristics of a technology have a decisive influence on job skills and work organization. Put more strongly, technology can be a primary determinant of social and managerial organization. Clark believes this possibility has been obscured by the recent sociological fashion, exemplified by Braverman’s analysis, that emphasizes the way machinery reflects social choices. For Braverman, the shape of a technological system is subordinate to the manager’s desire to wrest control of the labor process from the workers. Technological change is construed as the outcome of negotiations among interested parties who seek to incorporate their own interests into the design and configuration of the machinery. This position represents the new mainstream called social constructivism.

The constructivists gain acceptance by misrepresenting technological determinism: technological determinists are supposed to believe, for example, that machinery imposes appropriate forms of order on society. The alternative to constructivism, in other words, is to view technology as existing outside society, capable of directly influencing skills and work organization.

Clark refutes the extremes of the constructivists by both theoretical and empirical arguments. Theoretically he defines "technology" in terms of relationships between social and technical variables. Attempts to reduce the meaning of technology to cold, hard metal are bound to fail, for machinery is just scrap unless it is organized functionally and supported by appropriate systems of operation and maintenance. At the empirical level Clark shows how a change at the telephone exchange from maintenance-intensive electromechanical switches to semi-electronic switching systems altered work tasks, skills, training opportunities, administration, and organization of workers. Some changes Clark attributes to the particular way management and labor unions negotiated the introduction of the technology, whereas others are seen as arising from the capabilities and nature of the technology itself. Thus Clark helps answer the question: "When is social choice decisive and when are the concrete characteristics of technology more important?"

题目:

The information in the passage suggests that which of the following statements from hypothetical sociological studies of change in industry most clearly exemplifies the social constructivists’ version of technological determinism?

选项:

A、It is the available technology that determines workers' skills, rather than workers' skills influencing the application of technology.All progress in industrial technology grows out of a continuing negotiation between technological possibility and human need.
B、Some organizational change is caused by people; some is caused by computer chips.
C、Most major technological advances in industry have been generated through research and development.
D、Some industrial technology eliminates jobs, but educated workers can create whole new skills areas by the adaptation of the technology.

答案:

A
2答疑

[Sentence Correction]

试题详情

题目:

That educators have not anticipated the impact of microcomputer technology can hardly be said that it is their fault: Alvin Toffler, one of the most prominent students of the future, did not even mention microcomputers in Future Shock, published in 1970.

选项:

A、That educators have not anticipated the impact of microcomputer technology can hardly be said that it is their faultThat educators have not anticipated the impact of microcomputer technology can hardly be said to be at fault
B、It can hardly be said that it is the fault of educators who have not anticipated the impact of microcomputer technology
C、It can hardly be said that educators are at fault for not anticipating the impact of microcomputer technology
D、The fact that educators are at fault for not anticipating the impact of microcomputer technology can hardly be said

答案:

D
0评分
445浏览

[Undefined]

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?
0评分
1493浏览

[Undefined]

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
0评分
1684浏览

[Undefined]

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
0评分
635浏览

[Undefined]

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?
0评分
1461浏览

[GWD]

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
0评分
1037浏览

[OG]

The primary purpose of the passage is to
为什么选E不选B
0评分
692浏览

[Undefined]

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
0评分
704浏览

[Undefined]

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
0评分
166086浏览

[Undefined]

Analytical!
请问may老师,这题该用什么思路来做?
0评分
173200浏览

[Undefined]

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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