问答

1答疑

[Sentence Correction]

试题详情

题目:

In an effort to increase profits, the company moved itself from emphasizing its chemicals business to expand into high-growth pharmaceuticals and futuristic biotechnologies.

选项:

A、itself from emphasizing its chemicals business to expand
B、itself from emphasizing its chemicals business then to expanding
C、from an emphasis on its chemicals business and to expanding
D、from an emphasis on its chemicals business and to expand
E、from emphasizing its chemicals business to expanding

答案:

E
1答疑

[Problem Solving]

试题详情

题目:

In the xy-coordinate plane, which of the following points must lie on the line kx + 3y = 6 for every possible value of k ?

选项:

A、(1,1)
B、(0,2)
C、(2,0)
D、(3,6)
E、(6,3)

答案:

B
1答疑

[Reading Comprehension]

试题详情

文章:

题目:

The author of the passage mentions the supervision of schools primarily in order to

选项:

A、remind readers of the role education played in the cultural changes of the nineteenth century in the United States
B、suggest an area in which nineteenth-century American women were relatively free to exercise power
C、provide an example of an occupation for which accurate data about women’s participation are difficult to obtain
D、speculate about which occupations were considered suitable for United States women of the nineteenth century
E、illustrate how the answers to questions about women’s status depend on particular contexts

答案:

E
1答疑

[Critical Reasoning]

试题详情

文章:

Insurance Company X is considering issuing a new policy to cover services required by elderly people who suffer from diseases that afflict the elderly. Premiums for the policy must be low enough to attract customers. Therefore, Company X is concerned that the income from the policies would not be sufficient to pay for the claims that would be made.

题目:

Which of the following strategies would be most likely to minimize Company X’s losses on the policies?

选项:

A、Attracting middle-aged customers unlikely to submit claims for benefits for many yearsInsuring only those individuals who did not suffer any serious diseases as children
B、Including a greater number of services in the policy than are included in other policies of lower cost 
C、Insuring only those individuals who were rejected by other companies for similar policies
D、Insuring only those individuals who are wealthy enough to pay for the medical services

答案:

A
1答疑

[Data Sufficiency]

试题详情

题目:

Last year the average (arithmetic mean) salary of the 10 employees of Company X was $42,800. What is the average salary of the same 10 employees this year?
(1) For 8 of the 10 employees, this year's salary is 15 percent greater than last year's salary.
(2) For 2 of the 10 employees, this year's salary is the same as last year's salary.

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
1答疑

[Critical Reasoning]

试题详情

文章:

Until now, only injectable vaccines against influenza have been available. They have been used primarily by older adults, who are at risk for complications from influenza. A new vaccine administered in a nasal spray has proven effective in preventing influenza in children. Since children are significantly more likely than adults to contract and spread influenza, making the new vaccine widely available for children will greatly reduce the spread of influenza across the population.

题目:

Which of the following, if true, most strengthens the argument?

选项:

A、If a person receives both the injectable and the nasal-spray vaccine, the two vaccines do not interfere with each other.The new vaccine uses the same mechanism to ward off influenza as injectable vaccines do
B、Government subsidies have kept the injectable vaccine affordable for all older adults.
C、Of the older adults who contract influenza, relatively few contract it from children with influenza
D、Many parents would be more inclined to have their children vaccinated against influenza if the vaccination did not require an injection.

答案:

E
1答疑

[Reading Comprehension]

试题详情

文章:

 

The modern multinational corporation is described as having originated when the owner-managers of nineteenth-century British firms carrying on international trade were replaced by teams of salaried managers organized into hierarchies. Increases in the volume of transactions in such firms are commonly believed to have necessitated this structural change. Nineteenth-century inventions like the steamship and the telegraph, by facilitating coordination of managerial activities, are described as key factors. Sixteenth- and seventeenth-century chartered trading companies, despite the international scope of their activities, are usually considered irrelevant to this discussion: the volume of their transactions is assumed to have been too low and the communications and transport of their day too primitive to make comparisons with modern multinationals interesting.

In reality, however, early trading companies successfully purchased and outfitted ships, built and operated offices and warehouses, manufactured trade goods for use abroad, maintained trading posts and production facilities overseas, procured goods for import, and sold those goods both at home and in other countries. The large volume of transactions associated with these activities seems to have necessitated hierarchical management structures well before the advent of modern communications and transportation. For example, in the Hudson's Bay Company, each far-flung trading outpost was managed by a salaried agent, who carried out the trade with the Native Americans, managed day-to-day operations, and oversaw the post's workers and servants. One chief agent, answerable to the Court of Directors in London through the correspondence committee, was appointed with control over all of the agents on the bay.

The early trading companies did differ strikingly from modern multinationals in many respects. They depended heavily on the national governments of their home countries and thus characteristically acted abroad to promote national interests. Their top managers were typically owners with a substantial minority share, whereas senior managers' holdings in modern multinationals are usually insignificant. They operated in a preindustrial world, grafting a system of capitalist international trade onto a premodern system of artisan and peasant production. Despite these differences, however, early trading companies organized effectively in remarkably modern ways and merit further study as analogues of more modern structures.

题目:

 With which of the following generalizations regarding management structures would the author of the passage most probably agree?

选项:

A、Hierarchical management structures are the most efficient management structures possible in a modern context. 
B、Firms that routinely have a high volume of business transactions find it necessary to adopt hierarchical management structures. 
C、Hierarchical management structures cannot be successfully implemented without modern communications and transportation. 
D、Modern multinational firms with a relatively small volume of business transactions usually do not have hierarchically organized management structures.
E、Companies that adopt hierarchical management structures usually do so in order to facilitate expansion into foreign trade.

答案:

B
1答疑

[Data Sufficiency]

试题详情

题目:

If n  is an integer, is ?
(1)
(2)  

选项:

答案:

E
1答疑

[Data Sufficiency]

试题详情

题目:

What is the probability that event E or event F or both will occur?

(1) The probability that event E will occur is 0.6.

(2) The probability that event F will occur is 0.4.

选项:

答案:

E
1答疑

[Reading Comprehension]

试题详情

文章:

The Black Death, a severe epidemic that ravaged fourteenth-century Europe, has intrigued scholars ever since Francis Gasquet's 1893 study contending that this epidemic greatly intensified the political and religious upheaval that ended the Middle Ages.  Thirty-six years later, historian George Coulton agreed but, paradoxically, attributed a silver lining to the Black Death:  prosperity engendered by diminished competition for food, shelter, and work led survivors of the epidemic into the Renaissance and subsequent rise of modern Europe.
 
In the 1930s, however, Evgeny Kosminsky and other Marxist historians claimed the epidemic was merely an ancillary factor contributing to a general agrarian crisis stemming primarily from the inevitable decay of European feudalism.  In arguing that this decline of feudalism was economically determined, the Marxist asserted that the Black Death was a relatively insignificant factor.  This became the prevailing view until after the Second World War, when studies of specific regions and towns revealed astonishing mortality rates ascribed to the epidemic, thus restoring the central role of the Black Death in history.
 
This central role of the Black Death (traditionally attributed to bubonic plague brought from Asia) has been recently challenged from another direction.  Building on bacteriologist John Shrewsbury's speculations about mislabeled epidemics, zoologist Graham Twigg employs urban case studies suggesting that the rat population in Europe was both too sparse and insufficiently migratory to have spread plague.  Moreover, Twigg disputes the traditional trade-ship explanation for plague transmissions by extrapolating from data on the number of dead rats aboard Nile sailing vessels in 1912.  The Black Death, which he conjectures was anthrax instead of bubonic plague, therefore caused far less havoc and fewer deaths than historians typically claim.
 
Although correctly citing the exacting conditions needed to start or spread bubonic plague, Twigg ignores virtually a century of scholarship contradictory to his findings and employs faulty logic in his single-minded approach to the Black Death.  His speculative generalizations about the numbers of rats in medieval Europe are based on isolated studies unrepresentative of medieval conditions, while his unconvincing trade-ship argument overlooks land-based caravans, the overland migration of infected rodents, and the many other animals that carry plague.

题目:

The passage suggests that Twigg believes that rats could not have spread the Black Death unless which of the following were true?

选项:

A、The rats escaped from ships that had been in Asia.
B、The rats were immune to the diseases that they carried.
C、The rat population was larger in medieval Europe than Twigg believes it actually was.
D、The rat population primarily infested densely populated areas.
E、The rats interacted with other animals that Twigg believes could have carried plague.

答案:

C
0评分
1146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
3270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
3625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
1203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
2758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
1898浏览

[OG]

The primary purpose of the passage is to
为什么选E不选B
0评分
1216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
1279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
303428浏览

[Undefined]

Analytical!
请问may老师,这题该用什么思路来做?
0评分
310555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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