问答

2答疑

[Critical Reasoning]

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题目：

Manufacturing plants in Arundia have recently been acquired in substantial numbers by investors from abroad. Arundian politicians are proposing legislative action to stop such investment, justifying the proposal by arguing that foreign investors, opportunistically exploiting a recent fall in the value of the Arundian currency, were able to buy Arundian assets at less than their true value.

Which of the following, if true, casts the most serious doubt on the adequacy of the Arundian politicians' justification for the proposed legislation?

选项:

A、The Arundian government originally welcomed the fall in the value of the Arundian currency because the fall made Arundian exports more competitive on international markets.
B、Foreign investors who acquired Arundian manufacturing plants generally did so with no intention of keeping and running those plants over the long term.
C、Without the recent fall in the value of the Arundian currency, many of the Arundian assets bought by foreign investors would have been beyond the financial reach of those investors.
D、In Concordia, a country broadly similar to Arundia, the share of manufacturing assets that is foreign-controlled is 60 percent higher than it is in Arundia.
E、The true value of an investment is determined by the value of the profits from it, and the low value of the Arundian currency has depressed the value of any profits earned by foreign investors from Arundian assets.

答案:

E
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[Problem Solving]

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题目：

A teacher gave the same test to three history classes:  A , B , and C .  The average (arithmetic mean) scores for the three classes were 65, 80, and 77, respectively.  The ratio of the numbers of students in each class who took the test was 4 to 6 to 5, respectively.  What was the average score for the three classes combined?

选项:

A、74
B、75
C、76
D、77
E、78

答案:

B
2答疑

[Data Sufficiency]

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题目：

From May 1 to May 30 in the same year, the balance in a checking account increased. What was the balance in the checking account on May 30?
(1)   If, during this period of time, the increase in the balance in the checking account had been 12 percent, then the balance in the account on May 30 would have been $504
(2)   During this period of time, the increase in the balance in the checking account was 8 percent.

选项:

答案:

C
2答疑

[Reading Comprehension]

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题目：

The passage is primarily concerned with

选项:

A、 describing some effects of the professionalization of the study of history on the writing of women's history
B、 explaining some reasons for the professionalization of the writing of history
C、 discussing the kinds of historical writing traditionally practiced by women
D、 contrasting the approach to the writing of history taken by women with the approach taken by men
E、 criticizing certain changes that occurred in the writing of history during the second half of the nineteenth century

答案:

A
2答疑

[Critical Reasoning]

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题目：

In emerging economies in Africa and other regions, large foreign banks that were set up during the colonial era have long played a major economic role. These institutions have tended to confine their business to the wealthier of banks’ potential customers. But development of these countries’ economies requires financing of the small businesses that dominate their manufacturing, farming, and services sectors. So economic growth will be likely to occur if local banks take on this portion of the financial services markets, since __________.

Which of the following completions would produce the strongest argument?

选项:

A、local banks tend not to strive as much as large foreign banks to diversify their investments
B、small farming and manufacturing businesses contribute to economic growth if they obtain adequate investment capital
C、large foreign banks in emerging economies could, with local employees and appropriate local consultation, profitably expand their business to less wealthy clients
D、some small businesses are among the wealthier customers of foreign banks in emerging economies
E、local banks in emerging economies tend to be less risk-averse than foreign banks

答案:

B
2答疑

[Critical Reasoning]

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题目：

A moderately large city is redesigning its central downtown area and is considering a plan that would reduce the number of lanes for automobiles and trucks and increase those for bicycles and pedestrians. The intent is to attract more workers and shoppers to downtown businesses by making downtown easier to reach and more pleasant to move around in.

Which of the following would, if true, most strongly support the prediction that the plan would achieve its goal?

选项:

A、People who make a habit of walking or bicycling whenever feasible derive significant health benefits from doing so.
B、Most people who prefer to shop at suburban malls instead of downtown urban areas do so because parking is easier and cheaper at the former.
C、In other moderately sized cities where measures were taken to make downtowns more accessible for walkers and cyclists, downtown businesses began to thrive.
D、If the proposed lane restrictions on drivers are rigorously enforced, more people will likely be attracted to downtown businesses than would otherwise be.
E、Most people who own and frequently ride bicycles for recreational purposes live at a significant distance from downtown urban areas.

答案:

C
2答疑

[Reading Comprehension]

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文章：

    Years before the advent of plate tectonics―the widely accepted theory, developed in the mid-1960's, the holds that the major features of Earth's surface are created by the horizontal motions of Earth's outer shell, or lithosphere a similar theory was rejected by the geological community. In 1912, Alfred Wegener proposed, in a widely debate theory that came to be called continental drift, that Earth's continents were mobile. To most geologists today, Wegener's The origin of Continents and Oceans appears an impressive and prescient document, containing several of the essential presumptions underlying plate tectonics theory: the horizontal mobility of pieces of Earth's crust; the essential difference between oceanic and conti nental crust; and a causal connection between horizontal displacements and the formation of mountain chains. Yet despite the considerable overlap between Wegener's concepts and the later widely embraced plate tectonics theory, and despite the fact that continental drift theory presented a possible solution to the problem of the origin of mountains at a time when existing explanations were seriously in doubt, in its day Wegener's theory was rejected by the vast majority of geologists.

    Most geologists and many historians today believe that Wegener's theory was rejected because of its lack of an adequate mechanical basis. Stephen Jay Gould, for example, argues that continental drift theory was rejected because it did not explain how continent could move through an apparently solid oceanic floor. However, as Anthony Hallam has pointed out, many scientific phenomena, such as the ice ages, have been accepted before they could be fully explained. The most likely cause for the rejection of continental drift―a cause that has been largely ignored because we consider Wegener's theory to have been validated by the theory of plate tectonics―is the nature of the evidence that was put forward to support it. Most of Wegener's evidence consisted of homologies-similarities of patterns and forms based on direct observations of rocks in the field, supported by the use of hammers, hand lenses, and field notebooks. In contrast, the data supporting plate tectonics were impressively geophysical-instrumental determinations of the physical properties of Earth garnered through the use of seismographs, magnetometers, and computers.

题目：

The author cites Hallam (in the highlighted text) on the ice ages primarily in order to

选项:

A、provide an example of a geologic phenomenon whose precise causes are not fully understood by geologists today
B、criticize the geological community for an apparent lack of consistency in its responses to new theories
C、offer evidence held to undermine a common view of why Wegener's theory was not accepted in its day
D、give an example of a modern scientist who believes that Wegener's theory was rejected because it failed to adequately explain the mechanical basis of continental drift
E、support Gould's rationale for why Wegener's theory was rejected by most geologists in the early twentieth century

答案:

C
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[Sentence Correction]

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题目：

Cost cutting and restructuring has allowed the manufacturing company to lower its projected losses for the second quarter, and they are forecasting a profit before the end of the year.

选项:

A、has allowed the manufacturing company to lower its projected losses for the second quarter, and they are forecasting
B、has allowed for the manufacturing company to lower its projected losses in the second quarter and to forecast
C、have allowed that the manufacturing company can lower the projected losses for the second quarter, and to forecast
D、have allowed the manufacturing company to lower its projected second-quarter losses and to forecast
E、have allowed for the manufacturing company to lower the projected losses in the second quarter, as well as forecasting

答案:

D
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[Data Sufficiency]

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题目：

What is the greatest common factor of the positive integers j  and k ?
(1)     k  = j  + 1
(2)     jk  is divisible by 5.

选项:

答案:

A
2答疑

[Data Sufficiency]

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题目：


 
In the figure, points A, B, C, D, and E lie on a line.  A is on both circles, B is the center of the smaller circle, C is the center of the larger circle, D is on the smaller circle, and E is on the larger circle.  What is the area of the region inside the larger circle and outside the smaller circle?
(1)     AB = 3 and BC =2
(2)     CD =1 and DE = 4                  

选项:

答案:

D
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416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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1441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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1611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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618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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1422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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1004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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670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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689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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159739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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166848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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