问答

2答疑

[Critical Reasoning]

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题目：

Loss of the Gocha mangrove forests has caused coastal erosion, reducing fish populations and requiring the Gocha Fishing Cooperative (GFC) to partially fund dredging and new shore facilities. However, as part of its subsidiary businesses, the GFC has now invested in a program to replant significant parts of the coast with mangrove trees. Given income from a controlled harvest of wood with continuing replanting, the mangrove regeneration effort makes it more likely that the cooperative will increase its net income.

Which of the following, if true, would most strengthen the argument that mangrove replanting will increase the Gocha cooperative's net income?

选项:

A、The cost of dredging and shore facilities was shared with the local government.
B、The GFC will be able to hire local workers to assist with the mangrove replanting.
C、The GFC derives 10 percent of its revenue from salt-production facilities in an area previously cleared of mangroves.
D、Mangrove forests tend to increase the commercial fish populations in coastal fishing grounds.
E、A controlled harvesting of mangrove wood by the GFC would have little effect on coastal erosion.

答案:

D
2答疑

[Critical Reasoning]

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题目：

Printwell's Ink Jet Division manufactures ink-jet printers and the ink cartridges they use.  Sales of its ink-jet printers have increased.  Monthly revenues from those sales, however, have not increased, because competition has forced Printwell to cut the prices of its printers.  Unfortunately, Printwell has been unable to bring down the cost of manufacturing a printer.  Thus, despite the increase in printer sales, the Ink Jet Division must be providing the company with much smaller than it used to.
 
Which of the following, if true, most seriously weakens the argument?

选项:

A、Ink-jet printers in regular use frequently need new ink cartridges, and Printwell's printers only accept Printwell's ink cartridges.
B、Unlike some competing companies, Printwell sells all of its printers through retailers, and these retailers' costs account for a sizable proportion of the printers' ultimate retail price.
C、Some printer manufacturers have been forced to reduce the sale price of their ink-jet printers even more than Printwell has.
D、In the past year, no competing manufacturer of ink-jet printers has had as great an increase in unit sales of printers as Printwell has.
E、In the past year, sales of Printwell's ink-jet printers have increased more than sales of any other type of printer made by Printwell.

答案:

A
2答疑

[Data Sufficiency]

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题目：

How many different prime numbers are factors of the positive integer n ?

(1) Four different prime numbers are factors of 2n.

(2) Four different prime numbers are factors of $${n}^{2}$$.

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 statement 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:

B
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[Critical Reasoning]

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题目：

Fish currently costs about the same at seafood stores throughout Eastville and its surrounding suburbs. Seafood stores buy fish from the same wholesalers and at the same prices, and other business expenses have also been about the same. But new tax breaks will substantially lower the cost of doing business within the city. Therefore, in the future, profit margins will be higher at seafood stores within the city than at suburban seafood stores.
 
For the purposes of evaluating the argument, it would be most useful to know whether.

选项:

A、more fish wholesalers are located within the city than in the surrounding suburbs.
B、Any people who currently own seafood stores in the suburbs surrounding Eastville will relocate their businesses nearer to the city
C、The wholesale price of fish is likely to fall in the future
D、Fish has always cost about the same at seafood stores throughout Eastville and its surrounding suburbs.
E、Seafood stores within the city will in the future set prices that are lower than those at suburban seafood stores.

答案:

E
2答疑

[Sentence Correction]

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题目：

The features of the floor of the Kasei Valles on Mars look just like those at the base of Antarctic ice streams, so it suggests that possibly it was flowing ice that carved the giant Martian channels previously attributed to cataclysmic floods.

选项:

A、so it suggests that possibly it was flowing ice that
B、a suggestion that flowing ice may have
C、to suggest flowing ice as possibly having
D、suggesting that flowing ice may have
E、which is suggestive of flowing ice having possibly

答案:

D
2答疑

[Reading Comprehension]

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文章：

    A pressing need in the study of organizations is for more research into how an organization's values (anLine organization's guiding principles and beliefs as perceived by its members) affect managerial decision-making. Traditional theories have been based on a "rational model," which focuses on the decision-maker and either ignores the organizational value climate or conveniently assumes that the organization's values are consistent or clearly prioritized. In reality, however, decisions are shaped not only by a manager's own values, but also by those of the corporate culture and of organizational superiors. A recent study found that managers' most stressful decisions involved "valuecontention" (conflicts among any of these sets of values). Furthermore, different types of organizational value systems were associated with different frequencies of contending values as well as with different types of managerial response. Explicit corporate values, for example, produced a greater percentage of decisions that were stressful due to value contention. Hidden values (those that an organization practices but does not acknowledge or which a superior furtively pursues in opposition to the values of the organization) produced a lower level of value contention. Although explicit values created more value contention, they were nonetheless more likely to produce flexible, well-reasoned decisions. Conversely, managers perplexed by hidden values reported feeling unable to identify an appropriate range of options.

题目：

The passage suggests that which of the following has resulted from the influence of the rational model (in the highlighted text) ?

选项:

A、It has deflected researchers' attention from a critical factor affecting managerial decision-making.
B、It has focused decision-making procedures on managers' presumed ability to prioritize key corporate values.
C、It has diverted attention from the need for orientation of nonsupervisory employees to organizational values.
D、It has hampered communication between academic researchers and mangers of organizations.
E、It has produced theories that are practicable for analyzing decision-making processes only in relatively large organizations.

答案:

A
2答疑

[Reading Comprehension]

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文章：

After the Second World War, unionism in the Japanese auto industry was company-based, with separate unions in each auto company.  Most company unions played no independent role in bargaining shop-floor issues or pressing autoworkers' grievances.  In a 1981 survey, for example, fewer than 1 percent of workers said they sought union assistance for work-related problems, while 43 percent said they turned to management instead.  There was little to distinguish the two in any case: most union officers were foremen or middle-level managers, and the union's role was primarily one of passive support for company goals.  Conflict occasionally disrupted this cooperative relationship--one company union's opposition to the productivity campaigns of the early 1980s has been cited as such a case.  In 1986, however, a caucus led by the Foreman's Association forced the union's leadership out of office and returned the union's policy to one of passive cooperation.  In the United States, the potential for such company unionism grew after 1979, but it had difficulty taking hold in the auto industry, where a single union represented workers from all companies, particularly since federal law prohibited foremen from joining or leading industrial unions.
 
The Japanese model was often invoked as one in which authority decentralized to the shop floor empowered production workers to make key decisions.  What these claims failed to recognize was that the actual delegation of authority was to the foreman, not the workers.  The foreman exercised discretion over job assignments, training, transfers, and promotions; worker initiative was limited to suggestions that fine-tuned a management-controlled production process.  Rather than being proactive, Japanese workers were forced to be reactive, the range of their responsibilities being far wider than their span of control.  For example, the founder of one production system, Taichi Ohno, routinely gave department managers only 90 percent of the resources needed for production.  As soon as workers could meet production goals without working overtime, 10 percent of remaining resources would be removed.  Because the "OH! NO!" system continually pushed the production process to the verge of breakdown in an effort to find the minimum resource requirement, critics described it as "management by stress."

题目：

The author of the passage mentions the "OH! NO!" system primarily in order to

选项:

A、indicate a way in which the United States industry has become more like the Japanese auto industry
B、challenge a particular misconception about worker empowerment in the Japanese auto industry
C、illustrate the kinds of problem-solving techniques encouraged by company unions in Japan
D、suggest an effective way of minimizing production costs in auto manufacturing
E、provide an example of the responsibilities assumed by a foreman in the Japanese auto industry

答案:

B
2答疑

[Problem Solving]

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题目：

If P(r)=8r/(1-r), for what value of r does P(r)=1/2(P(3))?

选项:

A、6
B、3
C、–3
D、–6

答案:

D
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[Problem Solving]

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题目：

A certain university will select 1 of 7 candidates eligible to fill a position in the mathematics department and 2 of 10 candidates eligible to fill 2 identical positions in the computer science department.  If none of the candidates is eligible for a position in both departments, how many different sets of 3 candidates are there to fill the 3 positions?

选项:

A、42
B、70
C、140
D、165
E、315

答案:

E
2答疑

[Reading Comprehension]

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文章：

    Frazier and Mosteller assert that medical research could be improved by a move toward larger, simpler clinical trials of medical treatments. Currently, researchers collect far more background information on patients than is strictly required for their trials—substantially more than hospitals collect-thereby escalating costs of data collection, storage, and analysis. Although limiting information collection could increase the risk that researchers will overlook facts relevant to a study, Frazier and Mosteller contend that such risk, never entirely eliminable from research, would still be small in most studies. Only in research on entirely new treatments are new and unexpected variables likely to arise.

    Frazier and Mosteller propose not only that researchers limit data collection on individual patients but also that researchers enroll more patients in clinical trials, thereby obtaining a more representative sample of the total population with the disease under study. Often researchers restrict study participation to patients who have no ailments besides those being studied. A treatment judged successful under these ideal conditions can then be evaluated under normal conditions. Broadening the range of trial participants, Frazier and Mosteller suggest, would enable researchers to evaluate a treatment's efficacy for diverse patients under various conditions and to evaluate its effectiveness for different patient subgroups. For example, the value of a treatment for a progressive disease may vary according to a patient's stage of disease. Patients' ages may also affect a treatment's efficacy.

题目：

The passage is primarily concerned with

选项:

A、identifying two practices in medical research that may affect the accuracy of clinical trials
B、describing aspects of medical research that tend to drive up costs
C、evaluating an analysis of certain shortcomings of current medical research practices
D、describing proposed changes to the ways in which clinical trials are conducted
E、explaining how medical researchers have traditionally conducted clinical trials and how such trials are likely to change

答案:

D
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1927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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5014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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5697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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1908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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4126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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2886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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1910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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2000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
0评分
426322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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433460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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