问答

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

[Sentence Correction]

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题目：

As a result of a supernova explosion, every human being on Earth was bombarded on February 23, 1987, by about 100 billion neutrinos; fortunately, neutrinos are harmless elementary particles that are produced in nuclear reactions and that interact very weakly with matter.

选项:

A、 neutrinos are harmless elementary particles that are produced in nuclear reactions and that
B、 neutrinos, which are harmless, are elementary particles produced in nuclear reactions and which
C、 neutrinos are harmless elementary particles produced in nuclear reactions and which
D、 these harmless elementary particles are produced in nuclear reactions, and neutrinos
E、 these elementary particles, harmless products of nuclear reactions, are neutrinos that

答案:

A
2答疑

[Critical Reasoning]

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文章：

One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream. Accordingly, entrepreneurs have begun selling at gymnasiums and health clubs bottles of drinking water, labeled "SuperOXY," that has extra oxygen dissolved in the water. Such water would be useless in improving physical performance, however, since the amount of oxygen in the blood of someone who is exercising is already more than the muscle cells can absorb.

题目：

Which of the following, if true, would serve the same function in the argument as the statement in boldface?

选项:

A、world-class athletes turn in record performances without such waterfrequent physical exercise increases the body's ability to take in and use oxygen 
B、the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs 
C、lack of oxygen is not the only factor limiting human physical performance
D、the water lost in exercising can be replaced with ordinary tap water

答案:

C
2答疑

[Data Sufficiency]

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题目：

If a, b, c, and d are positive numbers, is ?

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

[Critical Reasoning]

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题目：

The recycling of municipal solid waste is widely seen as an environmentally preferable alternative to the prevailing practices of incineration and of dumping in landfills. Recycling is profitable, as the recycling programs already in operation demonstrate. A state legislator proposes that communities should therefore be required to adopt recycling and to reach the target of recycling 50 percent of all solid waste within 5 years.

Which of the following, if true, most seriously calls into question the advisability of implementing the proposal?

选项:

A、Existing recycling programs have been voluntary, with citizen participation ranging from 30 percent in some communities to 80 percent in others.
B、Existing recycling programs have been restricted to that 20 percent of solid waste that, when reprocessed, can match processed raw materials in quality and price.
C、Existing recycling programs have had recurrent difficulties finding purchasers for their materials, usually because of quantities too small to permit cost-effective pickup and transportation.
D、Some of the materials that can be recycled are the very materials that, when incinerated, produce the least pollution.
E、Many of the materials that cannot be recycled are also difficult to incinerate.

答案:

B
2答疑

[Data Sufficiency]

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题目：

S  is a set of points in the plane. How many distinct triangles can be drawn that have three of the points in S as vertices?
(1)   The number of distinct points in S  is 5.
(2)   No three of the points in S  are collinear.

选项:

答案:

C
2答疑

[Critical Reasoning]

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题目：

Automobile emissions are a significant source of air pollutants, and cars over five years old typically generate significantly greater amounts of pollutants than newer cars.  In Torinia, which has recently built its first automobile manufacturing plant, most cars are over five years old.  Aiming to boost Torinia's economy and reduce air pollution, the government plans to introduce incentives for Torinians to scrap their old cars every five years and replace them with new ones.
 
Which of the following, if true, most seriously undermines the likelihood that the planned incentives, if implemented, will achieve both of the cited aims?

选项:

A、Without the implementation of the planned incentives, most Torinians who own an old car would be unlikely to buy a new car.
B、Torinia's automobile plant manufactures car models that typically generate smaller amounts of air pollutants than most similarly sized car models manufactured elsewhere.
C、The new cars produced in Torinia are not likely to be exported to other countries.
D、The largest source of atmospheric pollutants in Torinia is not automobile emissions, but emissions from power plants.
E、The manufacture and the scrapping of cars each generate significant amounts of air pollutants.

答案:

E
2答疑

[Reading Comprehension]

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文章：

    Linda Kerber argued in the mid-1980's that after the American Revolution (1775-1783), an ideology of "republican motherhood" resulted in a surge of educational opportunities for women in the United States. Kerber maintained that the leaders of the new nation wanted women to be educated in order to raise politically virtuous sons. A virtuous citizenry was considered essential to the success of the country's republican form of government; virtue was to be instilled not only by churches and schools, but by families, where the mother's role was crucial. Thus, according to Kerber, motherhood became pivotal to the fate of the republic, providing justification for an unprecedented attention to female education.

    Introduction of the republican motherhood thesis dramatically changed historiography. Prior to Kerber's work, educational historians barely mentioned women and girls; Thomas Woody's 1929 work is the notable exception. Examining newspaper advertisements for academies, Woody found that educational opportunities increased for both girls and boys around 1750. Pointing to "An Essay on Woman" (1753) as reflecting a shift in view, Woody also claimed that practical education for females had many advocates before the Revolution. Woody's evidence challenges the notion that the Revolution changed attitudes regarding female education, although it may have accelerated earlier trends. Historians' reliance on Kerber's "republican motherhood" thesis may have obscured the presence of these trends, making it difficult to determine to what extent the Revolution really changed women's lives.

题目：

The passage suggests that, with regard to the history of women's education in the United States, Kerber's work differs from Woody's primarily concerning which of the following?

选项:

A、The extent to which women were interested in pursuing educational opportunities in the eighteenth century
B、The extent of the support for educational opportunities for girls prior to the American Revolution
C、The extent of public resistance to educational opportunities for women after the American Revolution
D、Whether attitudes toward women's educational opportunities changed during the eighteenth century
E、Whether women needed to be educated in order to contribute to the success of a republican form of government

答案:

B
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792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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2412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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2641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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923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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2119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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1459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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948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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984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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230619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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237743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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