问答

4答疑

[Problem Solving]

试题详情

题目:

A certain characteristic in a large population has a distribution that is symmetric about the mean m. If 68 percent of the distribution lies within one standard deviation d of the mean, what percent of the distribution is less than m + d ?

选项:

A、16%
B、32%
C、48%
D、84%
E、92%

答案:

D
4答疑

[Critical Reasoning]

试题详情

题目:

Critics of certain pollution-control regulations have claimed that the money spent over the last decade in order to reduce emissions of carbon monoxide and of volatile organic compounds has been wasted.  The evidence they offer in support of this claim might appear compelling:  despite the money spent, annual emissions of these pollutants have been increasing steadily.  This evidence is far from adequate, however, since over the last decade a substantial number of new industrial facilities that emit these pollutants have been built.
 
In the reasoning given, the two portions in boldface play which of the following roles?

选项:

A、The first identifies a claim that the reasoning seeks to show is false; the second is evidence that has been cited by others in support of that claim.
B、The first identifies a claim that the reasoning seeks to show is false; the second is a position for which the reasoning seeks to provide support.
C、The first is a position that the reasoning contends is inadequately supported by the evidence; the second is a position for which the reasoning seeks to provide support.
D、The first is a position that the reasoning contends is inadequately supported by the evidence; the second is evidence used to support the reasoning's contention.
E、The first is a position that the reasoning contends is inadequately supported by the evidence; the second is evidence that has been used to support that position.

答案:

D
4答疑

[Sentence Correction]

试题详情

题目:

According to one expert, the cause of genetic irregularities in many breeds of dog is not so much that dogs are being bred for looks or to meet other narrow criteria as that the breeds have relatively few founding members.

选项:

A、the cause of genetic irregularities in many breeds of dog is not so much that dogs are being bred for looks or to meet other narrow criteria
B、the cause of genetic irregularities in many breeds of dog is not as much their being bred for looks or meeting other narrow criteria as much
C、it is not so much the cause of genetic irregularities in many breeds of dog that they are being bred for looks or meeting other narrow criteria as much
D、it is not so much that the cause of genetic irregularities in many breeds of dog is their being bred for looks or meeting other narrow criteria so much
E、it is not so much the cause of genetic irregularities in many breeds of dog to be bred for looks or to meet other narrow criteria

答案:

A
4答疑

[Sentence Correction]

试题详情

题目:

Building on civilizations that preceded them in coastal Peru, the Mochica developed their own elaborate society, based on cultivating such crops like corn and beans, the harvesting of fish and shellfish, and exploiting other wild and domestic resources.

选项:

A、based on cultivating such crops like corn and beans, the harvesting of fish and shellfish, and exploiting
B、based on the cultivation of such crops as corn and beans, the harvesting of fish and seafood, and the exploitation of
C、and basing it on the cultivation of crops like corn and beans, harvesting fish and seafood, and the exploiting of
D、and they based it on their cultivation of crops such as corn and beans, the harvest of fish and seafood, and exploiting
E、and they based it on their cultivating such crops like corn and beans, their harvest of fish and shellfish, and they exploited

答案:

B
4答疑

[Problem Solving]

试题详情

题目:

选项:

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

答案:

B
4答疑

[Problem Solving]

试题详情

题目:

The probability that event M will not occur is 0.8 and the probability that event R will not occur is 0.6. If events M and R cannot both occur, which of the following is the probability that either event M or event R will occur?

选项:

A、
B、
C、
D、
E、

答案:

C
4答疑

[Critical Reasoning]

试题详情

题目:

Suncorp, a new corporation with limited funds, has been clearing large sections of the tropical Amazon forest for cattle ranching. This practice continues even though greater profits can be made from rubber tapping, which does not destroy the forest, than from cattle ranching, which does destroy the forest.

Which of the following, if true, most helps to explain why Suncorp has been pursuing the less profitable of the two economic activities mentioned above?

选项:

A、The soil of the Amazon forest is very rich in nutrients that are important in the development of grazing lands.
B、Cattle-ranching operations that are located in tropical climates are more profitable than cattle-ranching operations that are located in cold-weather climates.
C、In certain districts, profits made from cattle ranching are more heavily taxed than profits made from any other industry.
D、Some of the cattle that are raised on land cleared in the Amazon are killed by wildcats.
E、The amount of money required to begin a rubber-tapping operation is twice as high as the amount needed to begin a cattle ranch.

答案:

E
4答疑

[Reading Comprehension]

试题详情

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:

Which of the following, if true, provides the LEAST support for the author's argument about commerce and political parties during Jackson's presidency?

选项:

A、Many supporters of Jackson resisted the commercialization that could result from participation in a national economy.
B、Protest against the corrupt and partisan nature of political parties in the United States subsided during Jackson's presidency.
C、During Jackson's presidency the use of money became more common than bartering of goods and services.
D、More northerners than southerners supported Jackson because southerners were opposed to the development of a commercial economy.
E、Andrew Jackson did not feel as strongly committed to the classical ideals of leadership as George Washington had felt.

答案:

A
4答疑

[Data Sufficiency]

试题详情

题目:

If m and n are positive integers, what is the value of
  1. mn = 12
  2. is in lowest terms and is in lowest terms.

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
4答疑

[Sentence Correction]

试题详情

题目:

With a new park, stadium, and entertainment complex along the Delaware River, Trenton, New Jersey, is but one of a large number of communities that is looking to use its waterfront as a way for it to improve the quality of urban life and attract new businesses.

选项:

A、is looking to use its waterfront as a way for it to improve the quality of urban life and attract
B、is looking at using its waterfront to improve the quality of urban life and attract
C、are looking to use their waterfronts to improve the quality of urban life and attract
D、are looking to use its waterfront as a way of improving the quality of urban life and attracting
E、are looking at using their waterfronts as a way of improving the quality of urban life and attract

答案:

C
0评分
946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
2753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
3041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
1037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
2366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
1641浏览

[OG]

The primary purpose of the passage is to
为什么选E不选B
0评分
1056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
1118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
258690浏览

[Undefined]

Analytical!
请问may老师,这题该用什么思路来做?
0评分
265807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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