问答

3答疑

[Critical Reasoning]

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题目：

Over the past five years, the price gap between name-brand cereals and less expensive store-brand cereals has become so wide that consumers have been switching increasingly to store brands despite the name brands' reputation for better quality.  To attract these consumers back, several manufacturers of name-brand cereals plan to narrow the price gap between their cereals and store brands to less than what it was five years ago.
 
Which of the following, if true, most seriously calls into question the likelihood that the manufacturers' plan will succeed in attracting back a large percentage of consumers who have switched to store brands?

选项:

A、There is no significant difference among manufacturers of name-brand cereals in the prices they charge for their products.
B、Consumers who have switched to store-brand cereals have generally been satisfied with the quality of those cereals.
C、Many consumers would never think of switching to store-brand cereals because they believe the name brand cereals to be of better quality.
D、Because of lower advertising costs, stores are able to offer their own brands of cereals at significantly lower prices than those charged for name-brand cereals.
E、Total annual sales of cereals-including both name-brand and store-brand cereals-have not increased significantly over the past five years.

答案:

B
3答疑

[Reading Comprehension]

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文章：

    The term "episodic memory" was introduced by Tulving to refer to what he considered a uniquely human capacity-the ability to recollect specific past events, to travel back into the past in one's own mind-as distinct from the capacity simply to use information acquired through past experiences. Subsequently, Clayton et al. developed criteria to test for episodic memory in animals. According to these criteria, episodic memories are not of individual bits of information; they involvemultiple components of a single event "bound" together. Clayton sought to examine evidence of scrub jays' accurate memory of "what," "where," and "when" information and their binding of this information. In the wild, these birds store food for retrieval later during periods of food scarcity. Clayton's experiment required jays to remember the type, location, and freshness of stored food based on a unique learning event. Crickets were stored in one location and peanuts in another. Jays prefer crickets, but crickets degrade more quickly. Clayton's birds switched their preference from crickets to peanuts once the food had been stored for a certain length of time, showing that they retain information about the what, the where, and the when. Such experiments cannot, however, reveal whether the birds were reexperiencing the past when retrieving the information. Clayton acknowledged this by using the term "episodic-like" memory.

题目：

In order for Clayton's experiment to show that scrub jays have episodic-like memory, which of the following must be true in the experiment?

选项:

A、Some of the jays retrieved stored peanuts on the first occasion they were allowed to retrieve food.
B、All the crickets were retrieved before any of the peanuts were.
C、The peanuts were stored further away than the crickets.
D、When a jay attempted to retrieve a cricket or a peanut, the jay was prevented from eating it.
E、Throughout the experiment the jays were fed at levels typical of a time of scarcity.

答案:

E
3答疑

[Critical Reasoning]

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题目：

In order to raise revenue, the federal government planned a tax amnesty program that allows tax delinquents to pay all owed tax without added financial penalty. However, economists projected that the federal government would collect a far lower percentage of total tax owed by delinquents than did state governments implementing similar programs.
 
Which of the following, if true, would most contribute to an explanation of the economists' projections?

选项:

A、Tax amnesty programs are only successful if they are widely publicized.
B、Most people who honestly pay their state tax are equally honest in paying their federal tax.
C、Although federal tax delinquents usually must pay high financial penalties, the states require far lower financial penalties.
D、The state tax rate varies considerably from state to state, but the federal tax is levied according to laws which apply to citizens of all the states.
E、Unlike most federal tax delinquents, most state tax delinquents fail to pay state tax because of an oversight rather than a decision not to pay.

答案:

E
3答疑

[Sentence Correction]

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题目：

Gasoline marketing is undergoing major changes as stations often not only add convenience stores but also combine with major fast-food chains to build complexes where customers can shop and eat as well as buy gasoline.

选项:

A、 not only add convenience stores but also combine with major fast-food chains to build
B、 not only add convenience stores but also they combine with major fast-food chains to build
C、 are not only adding convenience stores but also in combination with major fast-food chains they build
D、 add not only convenience stores, but also combining with major fast-food chains to build
E、 are not only adding convenience stores, but also in combining with major fast-food chains they build

答案:

A
3答疑

[Problem Solving]

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题目：

If M is the least common multiple of 90, 196, and 300, which of the following is NOT a factor of M?

选项:

A、600
B、 700
C、900
D、2,100
E、4,900

答案:

A
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[Sentence Correction]

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题目：

1998 saw several new ventures promoting online distance learning both at the college and graduate level, but also faculty members in large numbers began questioning whether the computer screen was an adequate replacement for the classroom.

选项:

A、 1998 saw several new ventures promoting online distance learning both at the college and graduate level, but also faculty members in large numbers began
B、 In 1998 several new ventures were promoting online distance learning for both college-and for graduate-level courses, but it was also a year for a large number of faculty members who began
C、 With several new ventures promoting online distance learning both for college and graduate courses in 1998, it was also a year when a large number of faculty members had begun
D、 Although 1998 saw several new ventures promoting online distance learning for both college- and graduate-level courses, it was also a year when a large number of faculty members began
E、 Several new ventures were promoting online distance learning in 1998, at both the college level as well as the graduate, but it was also a year for faculty members to begin in large numbers

答案:

D
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[Sentence Correction]

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题目：

According to scholars, the earliest writing was probably not a direct rendering of speech, but was more likely to begin as a separate and distinct symbolic system of communication, and only later merged with spoken language.

选项:

A、was more likely to begin as
B、more than likely began as
C、more than likely beginning from
D、it was more than likely begun from
E、it was more likely that it began

答案:

B
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[Sentence Correction]

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题目：

Rivaling the pyramids of Egypt or even the ancient cities of the Maya as an achievement, the army of terra-cotta warriors created to protect Qin Shi Huang, China's first emperor, in his afterlife is more than 2,000 years old and took 700,000 artisans more than 36 years to complete them.

选项:

A、took 700,000 artisans more than 36 years to complete them
B、took 700,000 artisans more than 36 years to complete it
C、took 700,000 artisans more than 36 years to complete
D、700,000 artisans took more than 36 years to complete
E、to complete them took 700,000 artisans more than 36 years

答案:

C
3答疑

[Reading Comprehension]

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文章：

    Acting on the recommendation of a British government committee investigating the high incidence in white lead factories of illness amongemployees, most of whom were women, the Home Secretary proposed in 1895 that Parliament enact legislation that would prohibit women from holding most jobs in white lead factories. Although the Women's Industrial Defence Committee (WIDC), formed in 1892 in response to earlier legislative attempts to restrict women's labor, did not discount the white lead trade's potential health dangers, it opposed the proposal, viewing it as yet another instance of limiting women's work opportunities. Also opposing the proposal was the Society for Promoting the Employment of Women (SPEW), which attempted to challenge it by investigating the causes of illness in white lead factories. SPEW contended, and WIDC concurred, that controllable conditions in such factories were responsible for the development of lead poisoning.SPEW provided convincing evidence that lead poisoning could be avoided if workers were careful and clean and if already extant workplace safety regulations were stringently enforced. However, the Women's Trade Union League (WTUL), which had ceased in the late 1880's to oppose restrictions on women's labor, supported the eventually enacted proposal, in part because safety regulations were generally not being enforced in white lead factories, where there were no unions (and little prospect of any) to pressure employers to comply with safety regulations.

题目：

Which of the following, if true, would most clearly support the contention attributed to SPEW in the highlighted text ?

选项:

A、Those white lead factories that most strongly enforced regulations concerning worker safety and hygiene had the lowest incidences of lead poisoning among employees.
B、The incidence of lead poisoning was much higher among women who worked in white lead factories than among women who worked in other types of factories.
C、There were many household sources of lead that could have contributed to the incidence of lead poisoning among women who also worked outside the home in the late nineteenth century.
D、White lead factories were more stringent than were certain other types of factories in their enforcement of workplace safety regulations.
E、Even brief exposure to the conditions typically found in white lead factories could cause lead poisoning among factory workers.

答案:

A
3答疑

[Reading Comprehension]

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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 is primarily concerned with

选项:

A、demonstrating the relationship between bubonic plague and the Black Death
B、interpreting historical and scientific works on the origins of the Black Death
C、employing the Black Death as a case study of disease transmission in medieval Europe
D、presenting aspects of past and current debate on the historical importance of the Black Death
E、analyzing the differences between capitalist and Marxist interpretations of the historical significance of the Black Death

答案:

D
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571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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1719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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1922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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720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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1633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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1147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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770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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789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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181129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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188243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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