问答

2答疑

[Problem Solving]

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题目：

The operation Ä is defined for all nonzero numbers a and b by a Ä b = a/b – b/a.  If x and y are nonzero numbers, which of the following statements must be true?
 
 
I.                  x Ä xy = x(1 Ä y)
II.                 x Ä y = -(y Ä x)
III.               1/x Ä 1/y = y Ä x
 

选项:

A、I only
B、II only
C、III only
D、I and II
E、II and III

答案:

E
2答疑

[Data Sufficiency]

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题目：

Leo can buy a certain computer for p1 dollars in State A, where the sales tax is t1 percent, or he can buy the same computer for p2 dollars in State B, where the sales tax is t2 percent. Is the total cost of the computer greater in State A than in State B ?
(1)     t1 ＞ t2
(2)     p1t1 ＞ p2t2

选项:

答案:

E
2答疑

[Data Sufficiency]

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题目：

If a and b are integers, and b > 0, does  ?
  1. a = b – 4
  2. a = –b

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:

B
2答疑

[Sentence Correction]

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题目：

Thomas Mann's novel Doctor Faustus offers an examination not only of how difficult it is to reconcile reason, will, and passion together in any art form, but also a skillfully navigated exploration of the major concerns of modernism.

选项:

A、an examination not only of how difficult it is to reconcile reason, will, and passion together in any art form, but
B、an examination not only about the difficulty of reconciling reason, will, and passion in any art form, and
C、not only an examination of how difficult it is to reconcile reason, will, and passion in any art form, and
D、not only an examination about the difficulty with reconciling reason, will, and passion together in any art form, but
E、not only an examination of the difficulty of reconciling reason, will, and passion in any art form, but

答案:

E
2答疑

[Reading Comprehension]

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文章：

题目：

The author of the passage discusses Krontiris primarily to provide an example of a writer who

选项:

A、is highly critical of the writings of certain Renaissance women
B、supports Kelly’s view of women’s status during the Renaissance
C、has misinterpreted the works of certain Renaissance women
D、has rejected the views of both Burckhardt and Kelly
E、has studied Renaissance women in a wide variety of social and religious contexts

答案:

D
2答疑

[Reading Comprehension]

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文章：

The general density dependence model can be applied to explain the founding of specialist firms (those attempting to serve a narrow target market).  According to this model, specialist foundings hinge on the interplay between legitimation and competitive forces, both of which are functions of the density (total number) of firms in a particular specialist population.  Legitimation occurs as a new type of firm moves from being viewed as unfamiliar to being viewed as a natural way to organize.  At low density levels, each founding increases legitimation, reducing barriers to entry and easing subsequent foundings.  Competition occurs because the resources that firms seek--customers, suppliers, and employees--are limited, but as long as density is low relative to plentiful resources, the addition of another firm has a negligible impact on the intensity of competition.  At high density levels, however, competitive effects outweigh legitimation effects, discouraging foundings.  The more numerous the competitors, the fiercer the competition will be and the smaller will be the incentive for new firms to enter the field.
 
While several studies have found a significant correspondence between the density dependence model and actual patterns of foundings, other studies have found patterns not consistent with the model.  A possible explanation for this inconsistency is that legitimation and competitive forces transcend national boundaries, while studies typically restrict their analysis to the national level.  Thus a national-level analysis can understate the true legitimation and competitive forces as well as the number of foundings in an industry that is internationally integrated.  Many industries are or are becoming international, and since media and information easily cross national borders, so should legitimation and its effects on overseas foundings.  For example, if a type of firm becomes established in the United States, that information transcends borders, reduces uncertainties, and helps foundings of that type of firm in other countries.  Even within national contexts, studies have found more support for the density dependence model when they employ broader geographic units of analysis--for example, finding that the model's operation is seen more clearly at the state and national levels than at city levels.

题目：

In the second paragraph, the author is primarily concerned with

选项:

A、noting various exceptions to a certain general finding
B、examining the impact of one type of industry on another
C、proposing a possible explanation for an inconsistency
D、providing specific examples of a particular phenomenon
E、defending the validity of a particular study's conclusions

答案:

C
2答疑

[Reading Comprehension]

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文章：

Line Despite their many differences of temperament and
of literary perspective, Emerson, Thoreau, Hawthorne,
Melville, and Whitman shared certain beliefs. Common
to all these writers is their humanistic perspective.
(5) Its basic premises are that humans are the spiritual
center of the universe and that in them alone is the
clue to nature, history, and ultimately the cosmos.
Without denying outright the existence of a deity, this
perspective explains humans and the world in terms
(10) of humanity.
This common perspective is almost always
universalized. It emphasizes the human as universal,
freed from the accidents of time, space, birth, and
talent. Thus, for Emerson, the “American Scholar”
(15) turns out to be simply “Man Thinking,” while, for
Whitman, the “Song of Myself” merges imperceptibly
into a song of all the “children of Adam,” where “every
atom belonging to me as good belongs to you.”
Also common to all five writers is the belief
(20) that self-realization depends on the harmonious
reconciliation of two universal psychological
tendencies: first, the self-asserting impulse of
the individual to be responsible only to himself or
herself, and second, the self-transcending impulse
(25) of the individual to know and become one with
that world. These conflicting impulses can be seen
in the democratic ethic. Democracy advocates
individualism, the preservation of the individual's
freedom and self-expression. But the democratic self
(30) is torn between the duty to self, which is implied by
the concept of liberty, and the duty to society, which
is implied by the concepts of equality and fraternity.
A third assumption common to the five writers is
that intuition and imagination offer a surer road to
(35) truth than does abstract logic or scientific method. It
is illustrated by their emphasis upon introspection—
their belief that the clue to external nature is to be
found in the inner world of individual psychology—and
by their interpretation of experience as, in essence,
(40) symbolic. Both these stresses presume an organic
relationship between the self and the cosmos of
which only intuition and imagination can properly take
account. These writers’ faith in the imagination and
in themselves led them to conceive of the writer as a
(45) seer.

题目：

It can be inferred that the idea of "an organic relationship between the self and the cosmos" (see lines 44–45) is necessary to the thinking of the five writers because such a relationship

选项:

A、enables them to assert the importance of the democratic ethic
B、justifies their concept of the freedom of the individual
C、sustains their faith in the existence of a deity
D、is the foundation of their humanistic view of existence
E、is the basis for their claim that the writer is a seer

答案:

D
2答疑

[Reading Comprehension]

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文章：

The identification of femininity with morality and a belief in the innate moral superiority of women were fundamental to the cult of female domesticity in the nineteenth-century United States.  Ironically, this ideology of female benevolence empowered women in the realm of social activism, enabling them to escape the confines of their traditional domestic spheres and to enter prisons, hospitals, battlefields, and slums.  By following this path, some women came to wield considerable authority in the distribution of resources and services in their communities.
 
The sentimentalized concept of female benevolence bore little resemblance to women's actual work, which was decidedly unsentimental and businesslike, in that it involved chartering societies, raising money, and paying salaries.  Moreover, in the face of legal limitations on their right to control money and property, women had to find ingenious legal ways to run and finance organized philanthropy.  In contrast to the day-to-day reality of this work, the idealized image of female benevolence lent a sentimental and gracious aura of altruism to the very real authority and privilege that some women commanded--which explains why some women activists clung tenaciously to this ideology.  But clinging to this ideology also prevented these women from even attempting to gain true political power because it implied a moral purity that precluded participation in the messy world of partisan politics.

题目：

According to the passage, the ideology of female benevolence was consistent with women taking part in each of the following spheres of activity EXCEPT

选项:

A、organized philanthropy
B、domestic life
C、electoral politics
D、fund-raising for worthy causes
E、social work

答案:

C
2答疑

[Reading Comprehension]

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文章：

Line Critics maintain that the fiction of Herman Melville
(1819–1891) has limitations, such as its lack
of inventive plots after Moby-Dick (1851) and its
occasionally inscrutable style. A more serious, yet
(5) problematic, charge is that Melville is a deficient
writer because he is not a practitioner of the “art of
fiction,” as critics have conceived of this art since the
late nineteenth-century essays and novels of Henry
James. Indeed, most twentieth-century commentators
(10) regard Melville not as a novelist but as a writer of
romance, since they believe that Melville’s fiction
lacks the continuity that James viewed as essential
to a novel: the continuity between what characters
feel or think and what they do, and the continuity
(15) between characters’ fates and their pasts or original
social classes. Critics argue that only Pierre (1852),
because of its subject and its characters, is close to
being a novel in the Jamesian sense.
However, although Melville is not a Jamesian
(20) novelist, he is not therefore a deficient writer. A more
reasonable position is that Melville is a different
kind of writer, who held, and should be judged
by, presuppositions about fiction that are quite
different from James’s. It is true that Melville wrote
(25) “romances”; however, these are not the escapist
fictions this word often implies, but fictions that
range freely among very unusual or intense human
experiences. Melville portrayed such experiences
because he believed these best enabled him to
(30) explore moral questions, an exploration he assumed
was the ultimate purpose of fiction. He was content
to sacrifice continuity or even credibility as long
as he could establish a significant moral situation.
Thus Melville’s romances do not give the reader
(35) a full understanding of the complete feelings and
thoughts that motivate actions and events that shape
fate. Rather, the romances leave unexplained the
sequence of events and either simplify or obscure
motives. Again, such simplifications and obscurities
(40) exist in order to give prominence to the depiction of
sharply delineated moral values, values derived from
a character’s purely personal sense of honor, rather
than, as in a Jamesian novel, from the conventions of
society.

题目：

The author probably mentions Melville’s Pierre to

选项:

A、refute those literary critics who have made generalizations about the quality of Melville’s fiction
B、argue that the portrayal of characters is one of Melville’s more accomplished literary skills
C、give an example of a novel that was thought by James to resemble his own fiction
D、suggest that literary critics find few exceptions to what they believe is a characteristic of Melville’s fiction
E、reinforce the contention of literary critics

答案:

D
2答疑

[Problem Solving]

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题目：

If two of the four expressions x + y, x + 5y, x – y, and 5x – y are chosen at random, what is the probability that their product will be of the form of x2 – (by)2, where b is an integer?

选项:

A、
B、
C、
D、
E、

答案:

E
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1929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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5017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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5699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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1909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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4127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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2889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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1912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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2001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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426546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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433684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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