问答

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[Reading Comprehension]

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文章：

Line         Ecoefficiency (measures to minimize environmental
  impact through the reduction or elimination of waste
  from production processes) has become a goal for
  companies worldwide, with many realizing significant
(5) cost savings from such innovations. Peter Senge and
  Goran Carstedt see this development as laudable
  but suggest that simply adopting ecoefficiency
  innovations could actually worsen environmental
  stresses in the future. Such innovations reduce
(10) production waste but do not alter the number of
  products manufactured nor the waste generated
  from their use and discard; indeed, most companies
  invest in ecoefficiency improvements in order to
  increase profits and growth. Moreover, there is no
(15) guarantee that increased economic growth from
  ecoefficiency will come in similarly ecoefficient
  ways, since in today’s global markets, greater profits
  may be turned into investment capital that could easily
  be reinvested in old-style eco-inefficient industries.
(20) Even a vastly more ecoefficient industrial system
  could, were it to grow much larger, generate more
  total waste and destroy more habitat and species
  than would a smaller, less ecoefficient economy.
  Senge and Carstedt argue that to preserve the global
(25) environment and sustain economic growth,
  businesses must develop a new systemic approach
  that reduces total material use and total accumulated
  waste. Focusing exclusively on ecoefficiency, which
  offers a compelling business case according to
(30) established thinking, may distract companies from
  pursuing radically different products and business
  models.


题目：

The passage implies that which of the following is a possible consequence of a company’s adoption of innovations that increase its ecoefficiency?

选项:

A、Company profits resulting from such innovations may be reinvested in that company with no guarantee that the company will continue to make further improvements in ecoefficiency.
B、Company growth fostered by cost savings from such innovations may allow that company to manufacture a greater number of products that will be used and discarded, thus worsening environmental stress.
C、A company that fails to realize significant cost savings from such innovations may have little incentive to continue to minimize the environmental impact of its production processes.
D、A company that comes to depend on such innovations to increase its profits and growth may be vulnerable in the global market to competition from old-style eco-inefficient industries.
E、A company that meets its ecoefficiency goals is unlikely to invest its increased profits in the development of new and innovative ecoefficiency measures.

答案:

B
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[Critical Reasoning]

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题目：

While many people think of genetic manipulation of food crops as being aimed at developing larger and larger plant varieties, some plant breeders have in fact concentrated on discovering or producing dwarf varieties, which are roughly half as tall as normal varieties.

Which of the following would, if true, most help to explain the strategy of the plant breeders referred to above?

选项:

A、Plant varieties used as food by some are used as ornamentals by others.
B、The wholesale prices of a given crop decrease as the supply of it increases.
C、Crops once produced exclusively for human consumption are often now used for animal feed.
D、Short plants are less vulnerable to strong wind and heavy rains.
E、Nations with large industrial sectors tend to consume more processed grains.

答案:

D
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[Data Sufficiency]

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题目：

In quadrilateral ABCD, is angle BCD a right angle?
(1)   Angle ABC is a right angle.
(2) Angle ADC is a right angle.

选项:

答案:

E
2答疑

[Reading Comprehension]

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文章：

Line        Conodonts, the spiky phosphatic remains (bones
 and teeth composed of calcium phosphate) of
 tiny marine animals that probably appeared about
 520 million years ago, were once among the most
(5)controversial of fossils. Both the nature of the
 organism to which the remains belonged and the
 function of the remains were unknown. However,
 since the 1981 discovery of fossils preserving not
 just the phosphatic elements but also other remains
(10)of the tiny soft-bodied animals (also called conodonts)
 that bore them, scientists' reconstructions of the
 animals' anatomy have had important implications
 for hypotheses concerning the development of the
 vertebrate skeleton.
(15)     The vertebrate skeleton had traditionally been
 regarded as a defensive development, champions of
 this view postulating that it was only with the much
 later evolution of jaws that vertebrates became
 predators. The first vertebrates, which were soft-
(20)bodied, would have been easy prey for numerous
 invertebrate carnivores, especially if these early
 vertebrates were sedentary suspension feeders.
 Thus, traditionalists argued, these animals developed
 coverings of bony scales or plates, and teeth were
(25)secondary features, adapted from the protective
 bony scales. Indeed, external skeletons of this
 type are common among the well-known fossils of
 ostracoderms, jawless vertebrates that existed from
 approximately 500 to 400 million years ago.
(30)However, other paleontologists argued that many of
 the definitive characteristics of vertebrates, such as
 paired eyes and muscular and skeletal adaptations
 for active life, would not have evolved unless the
(35)first vertebrates were predatory. Teeth were more
 primitive than external armor according to this view,
 and the earliest vertebrates were predators.
      The stiffening notochord along the back of the
 body, V-shaped muscle blocks along the sides,
(40)and posterior tail fins help to identify conodonts as
 among the most primitive of vertebrates. The lack of
 any mineralized structures apart from the elements
 in the mouth indicates that conodonts were more
 primitive than the armored jawless fishes such as the
(45)ostracoderms. It now appears that the hard parts that
 first evolved in the mouth of an animal improved its
 efficiency as a predator, and that aggression rather
 than protection was the driving force behind the origin
 of the vertebrate skeleton.

题目：

According to the passage, the anatomical evidence provided by the preserved soft bodies of conodonts led scientists to conclude that

选项:

答案:

D
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[Critical Reasoning]

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文章：

Kitchen magazine plans to license the use of its name by a line of cookware. For a magazine, licensing the use of its name for products involves some danger, since if the products disappoint consumers, the magazine's reputation suffers, with consequent reductions in circulation and advertising. However, experts have evaluated the cookware and found it superior to all other cookware advertised in Kitchen. Therefore, Kitchen can collect its licensing fee without endangering its other revenues.

题目：

The argument above assumes which of the following?

选项:

A、No other line of cookware is superior to that which will carry the Kitchen name. Kitchen will not license the use of its name for any products other than the line of cookware. 
B、Makers of cookware will not find Kitchen a less attractive advertising vehicle because the magazine's name is associated with a competing product. 
C、Consumers who are not regular readers of Kitchen magazine will be attracted to the cookware by the Kitchen name.
D、Kitchen is one of the most prestigious cooking-related magazines.

答案:

C
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[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 among employees, 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：

The passage suggests that WIDC differed from WTUL in which of the following ways?
             

选项:

A、WIDC believed that the existing safety regulations were adequate to protect women's health, whereas WTUL believed that such regulations needed to be strengthened.
B、WIDC believed that unions could not succeed in pressuring employers to comply with such regulations, whereas WTUL believed that unions could succeed in doing so.
C、WIDC believed that lead poisoning in white lead factories could be avoided by controlling conditions there, whereas WTUL believed that lead poisoning in such factories could not be avoided no matter how stringently safety regulations were enforced.
D、At the time that the legislation concerning white lead factories was proposed, WIDC was primarily concerned with addressing health conditions in white lead factories, whereas WTUL was concerned with improving working conditions in all types of factories.
E、At the time that WIDC was opposing legislative attempts to restrict women's labor, WTUL had already ceased to do so.

答案:

E
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[Problem Solving]

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题目：

As shown in the figure above, a thin conveyor belt 15 feet long is drawn tightly around two circular wheels each 1 foot in diameter. What is the distance, in feet, between the centers of the two wheels?

选项:

A、(15-π)/2 
B、5π/4
C、15-2π
D、15-π
E、2π

答案:

A
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[Reading Comprehension]

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文章：

In a new book about the antiparty feeling of the early political leaders of the United States, Ralph Ketcham argues that the first six Presidents differed decisively from later Presidents because the first six held values inherited from the classical humanist tradition of eighteenth-century England. In this view, government was designed not to satisfy the private desires of the people but to make them better citizens; this tradition stressed the disinterested devotion of political leaders to the public good.  Justice, wisdom, and courage were more important qualities in a leader than the ability to organize voters and win elections.  Indeed, leaders were supposed to be called to office rather than to run for office.  And if they took up the burdens of public office with a sense of duty, leaders also believed that such offices were naturally their due because of their social preeminence or their contributions to the country.  Given this classical conception of leadership, it is not surprising that the first six Presidents condemned political parties.  Parties were partial by definition, self-interested, and therefore serving something other than the transcendent public good.
 
Even during the first presidency (Washington's), however, the classical conception of virtuous leadership was being undermined by commercial forces that had been gathering since at least the beginning of the eighteenth century.  Commerce--its profit-making, its self-interestedness, its individualism--became the enemy of these classical ideals.  Although Ketcham does not picture the struggle in quite this way, he does rightly see Jackson's tenure (the seventh presidency) as the culmination of the acceptance of party, commerce, and individualism.  For the Jacksonians, nonpartisanship lost its relevance, and under the direction of Van Buren, party gained a new legitimacy.  The classical ideals of the first six Presidents became identified with a privileged aristocracy, an aristocracy that had to be overcome in order to allow competition between opposing political interests.  Ketcham is so strongly committed to justifying the classical ideals, however, that he underestimates the advantages of their decline.  For example, the classical conception of leadership was incompatible with our modern notion of the freedoms of speech and press, freedoms intimately associated with the legitimacy of opposing political parties.

题目：

The passage is primarily concerned with

选项:

A、describing and comparing two theories about the early history of the United States
B、describing and analyzing an argument about the early history of the United States
C、discussing new evidence that qualifies a theory about the early history of the United States
D、refuting a theory about political leadership in the United States
E、resolving an ambiguity in an argument about political leadership in the United States

答案:

B
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[Sentence Correction]

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题目：

Constructed at least as early as the Sui dynasty (A.D. 581-618), the Altar of Heaven is the oldest known altar used in Chinese state religious practice, more than 1,000 years older than a similar one in Beijing, it is the only altar found so far that predates the Qing dynasty (A.D. 1644-1912).

选项:

A、Constructed at least as early as the Sui dynasty (A.D. 581-618), the Altar of Heaven is the oldest known altar used in Chinese state religious practice, more than 1,000 years older than a similar one in Beijing, it is
B、Constructed at least as early as the Sui dynasty (A.D. 581-618), the Altar of Heaven, the oldest known altar used in Chinese state religious practice, is more than 1,000 years older than a similar one in Beijing and is
C、The Altar of Heaven, having been constructed at least as early as the Sui dynasty (A.D. 581-618) and the oldest known altar used in Chinese state religious practice, is more than 1,000 years older than a similar one in Beijing and
D、The Altar of Heaven, which was constructed at least as early as the Sui dynasty (A.D. 581-618) and is the oldest known altar used in Chinese state religious practice, more than 1,000 years older than a similar one in Beijing and is
E、The oldest known altar used in Chinese state religious practice, more than 1,000 years older than a similar one in Beijing, the Altar of Heaven, which was constructed at least as early as the Sui dynasty (A.D. 581-618) and is

答案:

B
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[Critical Reasoning]

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题目：

Exporters in Country X are facing lower revenues due to a shortage of the large metal shipping containers in which they send their goods by sea to other countries. Fewer containers arrive in Country X due to reductions in imports. This has meant lost orders, costly delays, and a scramble for alternatives, such as air freight, all of which are costlier. Moreover, the revenues of exporters in Country X will probably continue to decline in the near future. This is because other countries are likely to find it increasingly unprofitable to export their goods to Country X, and because __________.

Which of the following would most logically complete the passage?

选项:

A、production of shipping containers in Country X is growing rapidly as a response to the shortage
B、shipping companies are willing to move containers from country to country only when the containers are full
C、the cost of shipping alternatives such as air freight is likely to stabilize in the near future
D、consumers in Country X are purchasing more products than ever before
E、the worldwide demand for goods made in Country X has only recently begun to rise after a long decline

答案:

B
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969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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2798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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3075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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2405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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1666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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1068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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1140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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261711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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268828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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