问答

1答疑

[Data Sufficiency]

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题目：

What is the total number of coins that Bert and Claire have?
  1. Bert has 50 percent more coins than Claire.
  2. The total number of coins that Bert and Claire have is between 21 and 28.

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:

C
1答疑

[Reading Comprehension]

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题目：

The primary purpose of the passage is to

选项:

A、compare the adaptive responses of several species of columnar cacti in the Sonoran Desert with those in the arid tropical regions of southern Mexico
B、discuss some of the possible causes of the relatively low abundance of migratory nectar-feeding bats in the Sonoran Desert
C、provide a possible explanation for a particular evolutionary change in certain species of columnar cacti in the Sonoran Desert
D、present recent findings that challenge a particular theory as to why several species of columnar cacti in the Sonoran Desert have expanded their range of pollinators
E、compare the effectiveness of nocturnal and diurnal pollination for several different species of columnar cacti in the Sonoran Desert

答案:

C
1答疑

[Reading Comprehension]

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文章：

    In the 1930's and 1940's, African American industrial workers in the southern United States, who constituted 80 percent of the unskilled factory labor force there, strongly supported unionization. While the American Federation of Labor (AFL) either excluded African Americans or maintained racially segregated unions, the Congress of Industrial Organizations (CIO) organized integrated unions nationwide on the basis of a stated policy of equal rights for all, and African American unionists provided the CIO's backbone. Yet it can be argued that through contracts negotiated and enforced by White union members, unions—CIO unions not excluded—were often instrumental in maintaining the occupational segregation and other forms of racial discrimination that kept African Americans socially and economically oppressed during this period. However, recognizing employers' power over workers as a central factor in African Americans' economic marginalization, African American workers saw the need to join with White workers in seeking change despite White unionists' toleration of or support for racial discrimination. The persistent efforts of African American unionists eventually paid off: many became highly effective organizers, gaining the respect of even racist White unionists by winning victories for White as well as African American workers. African American unionists thus succeeded in strengthening the unions while using them as instruments of African Americans' economic empowerment.

题目：

The passage is primarily concerned with

选项:

A、demonstrating that unions failed to address the concerns of African American workers during a particular period
B、arguing that African American workers' participation in unions during a particular period was ultimately beneficial to them
C、contrasting the treatment of African American workers by two different labor organizations during a particular period
D、giving reasons for the success of African American unionists in winning victories for both African American and White workers during a particular period
E、questioning one explanation for the attitudes of African American workers toward unionization during a particular period

答案:

B
1答疑

[Critical Reasoning]

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文章：

Airline: Newly developed collision-avoidance systems, although not fully tested to discover potential malfunctions, must be installed immediately in passenger planes. Their mechanical warnings enable pilots to avoid crashes. Pilots: Pilots will not fly in planes with collision-avoidance systems that are not fully tested. Malfunctioningsystems could mislead pilots, causing crashes.

题目：

The pilots' objection is most strengthened if which of the following is true?

选项:

A、It is always possible for mechanical devices to malfunctionJet engines, although not fully tested when first put into use, have achieved exemplary performance and safety records
B、Although collision-avoidance systems will enable pilots to avoid some crashes, the likely malfunctions of the not-fully-tested systems will cause even more crashes.
C、Many airline collisions are caused in part by the exhaustion of overworked pilots.
D、Collision-avoidance systems, at this stage of development, appear to have worked better in passenger planes than in cargo planes during experimental flights made over a six-month period.

答案:

C
1答疑

[Data Sufficiency]

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题目：

Is x  greater than y  ?
(1)  
(2)  

选项:

答案:

C
1答疑

[Sentence Correction]

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题目：

Researchers are using computer images to help surgeons plan difficult operations and to develop programs that will work for doctors and nurses in the same way that flight simulators do for pilots, letting medical personnel practice their techniques and test their reflexes before they ever see a patient.

选项:

A、plan difficult operations and to develop programs that will work for doctors and nurses in the same way that flight simulators do
B、plan difficult operations and develop programs to work for doctors and nurses the same way as with flight simulators
C、to plan difficult operations and to develop programs that will work for doctors and nurses like flight simulators
D、plan difficult operations and in developing programs to work for doctors and nurses the same way as flight simulators
E、to plan difficult operations and developing programs that will work for doctors and nurses like flight simulators do

答案:

A
1答疑

[Reading Comprehension]

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文章：

The premise with which the multiculturalists begin is unexceptional: that it is important to recognize and to celebrate the wide range of cultures that exist in the United States. In what sounds like a reflection of traditional American pluralism, the multiculturalists argue that we must recognize difference, that difference is legitimate; in its kindlier versions, multiculturalism represents the discovery on the part of minority groups that they can play a part in molding the larger culture even as they are molded by it. And on the campus multiculturalism, defined more locally as the need to recognize cultural variations among students, has tried with some success to talk about how a racially and ethnically diverse student body can enrich everyone’s education.
Phillip Green, a political scientist at Smith and a thoughtful proponent of multiculturalism, notes that for a significant portion of the students the politics of identity is all-consuming. Students he says "are unhappy with the thin gruel of rationalism. They require a therapeutic curriculum to overcome not straightforward racism but ignorant stereotyping."
(1) But multiculturalism’s hard-liners, who seem to make up the majority of the movement, damn as racism any attempt to draw the myriad of American groups into a common American culture. For these multiculturalists, differences are absolute, irreducible, intractable—occasions not for understanding but for separation. The multiculturalist, it turns out, is not especially interested in the great American hyphen, in the syncretistic (and therefore naturally tolerant) identities that allow Americans to belong to more than a single culture, to be both particularists and universalists.
The time-honored American mixture of assimilation and traditional allegiance is denounced as a danger to racial and gender authenticity. This is an extraordinary reversal of the traditional liberal commitment to a "truth" that transcends parochialisms. In the new race/class/gender formation, universality is replaced by, among other things, feminist science Nubian numerals (as part of an Afro-centric science), and what Marilyn Frankenstein of the University of Massachusetts-Boston describes as "ethno-mathematics," in which the cultural basis of counting comes to the fore.
The multiculturalists insist on seeing all perspectives as tainted by the perceiver’s particular point of view. Impartial knowledge, they argue, is not possible, because ideas are simply the expression of individual identity, or of the unspoken but inescapable assumptions that are inscribed in a culture or a language. The problem, (2) however, with this warmed-over Nietzscheanism is that it threatens to leave no ground for anybody to stand on. So the multi-culturalists make a leap, necessary for their own intellectual survival, and proceed to argue that there are some categories, such as race and gender, that do in fact embody an unmistakable knowledge of oppression. Victims are at least epistemologically lucky. Objectivity is a mask for oppression. And so an appalled former 1960s radical complained to me that self-proclaimed witches were teaching classes on witchcraft. "They’re not teaching students how to think," she said, "they’re telling them what to believe."

题目：

The author states that in a "kindlier version" of multiculturalism, minorities discover "that they can play a part in molding the larger culture even as they are molded by it." If no new ethnic groups were incorporated into the American culture for many centuries to come, which one of the following would be the most probable outcome of this "kindlier version"?

选项:

A、A. At some point in the future, there would be only one culture with no observable ethnic differences.
B、B. Eventually the dominant culture would overwhelm the minority cultures, who would then lose their ethnic identities.
C、C. The multiplicity of ethnic groups would remain but the characteristics of the different ethnic groups would change.
D、D. The smaller ethnic groups would remain, and they would retain their ethnic heritage.
E、E. The minority cultures would eventually overwhelm the dominant culture, which would then lose its identity.

答案:

A
1答疑

[Problem Solving]

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题目：

The numbers x  and y  are three-digit positive integers, and x + y  is a four-digit integer.  The tens digit of x  equals 7 and the tens digit of y  equals 5.  If x < y , which of the following must be true?
 
 
  I.  The units digit of x + y  is greater than the units digit of either x or y.
 II.  The tens digit of x + y  equals 2.
III.  The hundreds digit of y  is at least 5.

选项:

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

答案:

B
1答疑

[Data Sufficiency]

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题目：

In June 1989, what was the ratio of the number of sales transactions made by Salesperson X to the number of sales transactions made by Salesperson Y?
(1)   In June 1989, Salesperson X made 50 percent more sales transactions than Salesperson Y did in May 1989.
(2)   In June 1989, Salesperson Y made 25 percent more sales transactions than in May 1989.
                  

选项:

答案:

C
1答疑

[Reading Comprehension]

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文章：

Colonial historian David Allen's intensive study of five communities in seventeenth-century Massachusetts is a model of meticulous scholarship on the detailed microcosmic level, and is convincing up to a point.  Allen suggests that much more coherence and direct continuity existed between English and colonial agricultural practices and administrative organization than other historians have suggested.  However, he overstates his case with the declaration that he has proved "the remarkable extent to which diversity in New England local institutions was directly imitative of regional differences in the mother country."
 
Such an assertion ignores critical differences between seventeenth-century England and New England.  First, England was overcrowded and land-hungry; New England was sparsely populated and labor-hungry.  Second, England suffered the normal European rate of mortality; New England, especially in the first generation of English colonists, was virtually free from infectious diseases.  Third, England had an all-embracing state church; in New England membership in a church was restricted to the elect.  Fourth, a high proportion of English villagers lived under paternalistic resident squires; no such class existed in New England.  By narrowing his focus to village institutions and ignoring these critical differences, which studies by Greven, Demos, and Lockridge have shown to be so important, Allen has created a somewhat distorted picture of reality.
 
Allen's work is a rather extreme example of the "country community" school of seventeenth-century English history whose intemperate excesses in removing all national issues from the history of that period have been exposed by Professor Clive Holmes.  What conclusion can be drawn, for example, from Allen's discovery that Puritan clergy who had come to the colonies from East Anglia were one-third to one-half as likely to return to England by 1660 as were Puritan ministers from western and northern England?  We are not told in what way, if at all, this discovery illuminates historical understanding.  Studies of local history have enormously expanded our horizons, but it is a mistake for their authors to conclude that village institutions are all that mattered, simply because their functions are all that the records of village institutions reveal.

题目：

According to the passage, which of the following was true of most villages in seventeenth-century England?

选项:

A、The resident squire had significant authority.
B、Church members were selected on the basis of their social status within the community.
C、Low population density restricted agricultural and economic growth.
D、There was little diversity in local institutions from one region to another.
E、National events had little impact on local customs and administrative organization.

答案:

A
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[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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1265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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1444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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561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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1306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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931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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624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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633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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[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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156324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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