问答

1答疑

[Data Sufficiency]

试题详情

题目:

If $$x$$ and $$y$$ are positive integers, what is the value of $$x$$?

(1)$${3}^{x}{5}^{y}={1},{125}$$

(2)$$y = 3$$

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 statement 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:

A
1答疑

[Problem Solving]

试题详情

题目:

A merchant paid $300 for a shipment of x identical calculators. The merchant used two of the calculators as demonstrators and sold each of the others for $5 more than the average (arithmetic mean) cost of the x calculators. If the total revenue from the sale of the calculators was $120 more than the cost of the shipment, how many calculators were in the shipment?

选项:

A、24
B、25
C、26
D、28
E、30

答案:

E
1答疑

[Problem Solving]

试题详情

题目:

The cost C, in dollars, to remove p percent of a certain pollutant from a pond is estimated by using the formula . According to this estimate, how much more would it cost to remove 90 percent of the pollutant from the pond than it would cost to remove 80 percent of the pollutant?

选项:

A、$500,000
B、$100,000
C、$50,000
D、$10,000
E、$5,000

答案:

A
1答疑

[Reading Comprehension]

试题详情

文章:

Line         Much research has been devoted to investigating
  what motivates consumers to try new products.
  Previous consumer research suggests that both the
  price of a new product and the way it is advertised
(5) affect consumers’ perceptions of the product’s
  performance risk (the possibility that the product will
  not function as consumers expect and/or will not
  provide the desired benefits). Some of this research
  has concluded that a relatively high price will reduce
(10) a consumer’s perception of the performance risk
  associated with purchasing a particular product,
  while other studies have reported that price has little
  or no effect on perceived performance risk. These
  conflicting findings may simply be due to the nature
(15) of product advertisements: a recent study indicates
  that the presentation of an advertised message has a
  marked effect on the relationship between price and
  perceived performance risk.
       Researchers have identified consumers’ perception
(20) of the credibility of the source of an advertised
  message—i.e., the manufacturer—as another factor
  affecting perceived performance risk: one study
  found that the greater the source credibility, the lower
  the consumer’s perception of the risk of purchasing
(25) an advertised new product. However, past research
  suggests that the relationship between source
  credibility and perceived performance risk may be
  more complex: source credibility may interact with
  price in a subtle way to affect consumers’ judgments
(30) of the performance risk associated with an advertised
  product.


题目:

Which of the following, if true, would most tend to weaken the conclusions drawn from “some of this research” (see line 8)?

选项:

A、In a subsequent study, consumers who were asked to evaluate new products with relatively low prices had the same perception of the products’ performance risk as did consumers who were shown the same products priced more expensively.
B、In a subsequent study, the quality of the advertising for the products that consumers perceived as having a lower performance risk was relatively high, while the quality of the advertising for the products that consumers perceived as having a higher performance risk was relatively poor.
C、In a subsequent study, the products that consumers perceived as having a lower performance risk were priced higher than the highest priced products in the previous research.
D、None of the consumers involved in this research had ever before bought products from the manufacturers involved in the research.
E、Researchers found that the higher the source credibility for a product, the more consumers were willing to pay for it.

答案:

A
1答疑

[Critical Reasoning]

试题详情

文章:

Corporate officers and directors commonly buy and sell, for their own portfolios, stock in their own corporations. Generally, when the ratio of such inside sales to inside purchases falls below 2 to 1 for a given stock, a rise in stock prices is imminent. In recent days, while the price of MEGA Corporation stock has been falling, the corporation's officers and directors have bought up to nine times as much of it as they have sold.

题目:

The facts above best support which of the following predictions?

选项:

A、The imbalance between inside purchases and inside sales of MEGA stock will grow even further. Inside purchases of MEGA stock are about to cease abruptly. 
B、The price of MEGA stock will soon begin to go up. 
C、The price of MEGA stock will continue to drop, but less rapidly.
D、The majority of MEGA stock will soon be owned by MEGA's own officers and directors.

答案:

C
1答疑

[Reading Comprehension]

试题详情

文章:

    In Winters v. United States (1908), the Supreme Court held that the right to use waters flowing through or adjacent to the Fort Berthold Indian Reservation was reserved to American Indians by the treaty establishing the reservation. Although this treaty did not mention water rights, the Court ruled that the federal government, when it created the reservation, intended to deal fairly with American Indians by preserving for them the waters without which their lands would have been useless. Later decisions, citing Winters, established that courts can find federal rights to reserve water for particular purposes if (1) the land in question lies within an enclave under exclusive federal jurisdiction, (2) the land has been formally withdrawn from federal public lands—i.e., withdrawn from the stock of federal lands available for private use under federal land use laws-and set aside or reserved, and (3) the circumstances reveal the government intended to reserve water as well as land when establishing the reservation.

    Some American Indian tribes have also established water rights through the courts based on their traditional diversion and use of certain waters prior to the United States' acquisition of sovereignty. For example, the Rio Grande pueblos already existed when the United States acquired sovereignty over New Mexico in 1848. Although they at that time became part of the United States, the pueblo lands never formally constituted a part of federal public lands; in any event, no treaty, statute, or executive order has ever designated or withdrawn the pueblos from public lands as American Indian reservations. This fact, however, has not barred application of the Winters doctrine. What constitutes an American Indian reservation is a question of practice, not of legal definition, and the pueblos have always been treated as reservations by the United States.This pragmatic approach is buttressed by Arizona v. California (1963), wherein the Supreme Court indicated that the manner in which any type of federal reservation is created does not affect the application to it of the Winters doctrine. Therefore, the reserved water rights of Pueblo Indians have priority over other citizens' water rights as of 1848, the year in which pueblos must be considered to have become reservations.

题目:

The passage suggests that, if the criteria discussed in the highlighted test were the only criteria for establishing a reservation's water rights, which of the following would be true?

选项:

A、The water rights of the inhabitants of the Fort Berthold Indian Reservation would not take precedence over those of other citizens.
B、Reservations established before 1848 would be judged to have no water rights.
C、There would be no legal basis for the water rights of the Rio Grande pueblos.
D、Reservations other than American Indian reservations could not be created with reserved water rights.
E、Treaties establishing reservations would have to mention water rights explicitly in order to reserve water for a particular purpose.

答案:

C
1答疑

[Reading Comprehension]

试题详情

文章:

  Historians have identified two dominant currents in the Russian women's movement of the late tsarist period. ''Bourgeois" feminism, so called by its more radical opponents, emphasized ''individualist" feminist goals such as access to education, career opportunities, and legal equality. ''Socialist" feminists, by contrast, emphasized class, rather than gender, as the principal source of women's inequality and oppression, and socialist revolution, not legal reform, as the only road to emancipation and equality.
  However, despite antagonism between bourgeois feminists and socialist feminists, the two movements shared certain underlying beliefs. Both regarded paid labor as the principal means by which women might attain emancipation: participation in the workplace and economic self-sufficiency, they believed, would make women socially useful and therefore deserving of equality with men. Both groups also recognized the enormous difficulties women faced when they combined paid labor with motherhood. In fact, at the First All-Russian Women's Congress in 1908, most participants advocated maternity insurance and paid maternity leave, although the intense hostility between some socialists and bourgeois feminists at the Congress made it difficult for them to recognize these areas of agreement. Finally, socialist feminists and most bourgeois feminists concurred in subordinating women's emancipation to what they considered the more important goal of liberating the entire Russian population from political oppression, economic backwardness, and social injustice.

题目:

According to the passage, Russian socialists within the women's movement and most bourgeois feminists disagreed about which of the following?

选项:

A、Whether legal reform was central to the achievement of feminist goals
B、Whether paid employment was important for the achievement of equality 
C、Whether maternity insurance was desirable for working mothers 
D、Whether working mothers faced obstacles 
E、Whether women's emancipation should be subordinated to the liberation of the Russian population

答案:

A
1答疑

[Problem Solving]

试题详情

题目:

Of the 200 students at College T majoring in one or more of the sciences, 130 are majoring in chemistry and 150 are majoring in biology. If at least 30 of the students are not majoring in either chemistry or biology, then the number of students majoring in both chemistry and biology could be any number from

选项:

A、 20 to 50
B、 40 to 70
C、 50 to 130
D、110 to 130
E、110 to 150

答案:

D
1答疑

[Reading Comprehension]

试题详情

文章:

Prior to 1975, union efforts to organize public-sector clerical workers, most of whom are women, were somewhat limited. The factors favoring unionization drives seem to have been either the presence of large numbers of workers, as in New York City, to make it worth the effort, or the concentration of small numbers in one or two locations, such as a hospital, to make it relatively easy, Receptivity to unionization on the workers, part was also a consideration, but when there were large numbers involved or the clerical workers were the only unorganized group in a jurisdiction, the multioccupational unions would often try to organize them regardless of the workers' initial receptivity. The strategic reasoning was based, first, on the concern that politicians and administrators might play off unionized against nonunionized workers, and, second, on the conviction that a fully unionized public work force meant power, both at the bargaining table and in the legislature. In localities where clerical workers were few in number, were scattered in several workplaces, and expressed no interest in being organized, unions more often than not ignored them in the pre-1975 period. But since the mid-1970's, a different strategy has emerged. In 1977, 34 percent of government clerical workers were represented by a labor organization, compared with 46 percent of government professionals, 44 percent of government blue-collar workers, and 41 percent of government service workers. Since then, however, the biggest increases in public-sector unionization have been among clerical workers. Between 1977and 1980, the number of unionized government workers in blue-collar and service occupations increased only about 1.5 percent, while in the white-collar occupations the increase was 20 percent and among clerical workers in particular, the increase was 22 percent.

What accounts for this up surge in unionization among clerical workers? First, more women have entered the work force in the past few years, and more of them plan to remain working until retirement age. Consequently, they are probably more concerned than their predecessors were about job security and economic benefits. Also, the women's movement has succeeded in legitimizing the economic and political activism of women ontheir own behalf, thereby producing a more positive attitude toward unions. The absence of any comparable increase in unionization among private-sector clerical workers, however, identifies the primary catalyst-the structural change in the multioccupational public-sectorunions themselves. Over the past twenty years, the occupational distribution in these unions has been steadily shifting from predominantly blue-collar to predominantly white-collar. Because there are far more women in white-collar jobs, an increase in the proportion of female members has accompanied the occupational shift and has altered union policy-making in favor of organizing women and addressing women's issues.

题目:

The author cites union efforts to achieve a fully unionized work force (highlight text) in order to account for why

选项:

A、politicians might try to oppose public-sector union organizingpublic-sector unions have recently focused on organizing women
B、early organizing efforts often focused on areas where there were large numbers of workers
C、union efforts with regard to public-sector clerical workers increased dramatically after 1975
D、unions sometimes tried to organize workers regardless of the workers' initial interest in unionization

答案:

E
1答疑

[Critical Reasoning]

试题详情

题目:

Letter to the editor: If the water level in the Searle River Delta continues to drop, the rising sea level will make the water saltier and less suitable for drinking. Currently, 40 percent of the water from upstream tributaries is diverted to neighboring areas. To keep the delta’s water level from dropping any further, we should end all current diversions from the upstream tributaries. Neighboring water utilities are likely to see higher costs and diminished water supplies, but these costs are necessary to preserve the delta.

Which of the following would, if true, indicate a serious potential weakness of the suggested plan of action?

选项:

A、Desalination equipment would allow water from the delta to be used for drinking even it if became saltier.
B、Water level is only one factor that affects salinity in the delta.
C、The upstream tributaries’ water levels are controlled by systems of dams and reservoirs.
D、Neighboring areas have grown in population since the water was first diverted from upstream tributaries.
E、Much of the recent drop in the delta’s water level can be attributed to a prolonged drought that has recently ended.

答案:

E
0评分
326浏览

[Undefined]

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?
0评分
1267浏览

[Undefined]

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
0评分
1444浏览

[Undefined]

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
0评分
561浏览

[Undefined]

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?
0评分
1306浏览

[GWD]

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
0评分
931浏览

[OG]

The primary purpose of the passage is to
为什么选E不选B
0评分
624浏览

[Undefined]

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
0评分
633浏览

[Undefined]

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
0评分
149232浏览

[Undefined]

Analytical!
请问may老师,这题该用什么思路来做?
0评分
156340浏览

[Undefined]

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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