问答

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[Problem Solving]

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题目：

A doctor prescribed 18 cubic centimeters of a certain drug to a patient whose body weight was 120 pounds. If the typical dosage is 2 cubic centimeters per 15 pounds of body weight, by what percent was the prescribed dosage greater than the typical dosage?

选项:

A、8%
B、9%
C、11%
D、12.5%
E、14.8%

答案:

D
2答疑

[Reading Comprehension]

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文章：

(This passage was adapted from an article written in 1990.)

    Research data indicate that there is a great deal of poverty in the United States among singleparent families headed by women. This problem could result from the fact that women's wages are only 60 percent of men's. Some economists believe that rigorous enforcement of existing equal pay laws would substantially decrease this wage inequity. But equal pay laws are ineffectual when women and men are concentrated in different occupations because such laws require only that women and men doing the same jobs be paid the same. Since gender concentration exists (for example, 80 percent of clerical workers are women), other economists argue that a comparable worth standard, which would mandate that women and men in any jobs that require comparable training and responsibility be paid the same, should be applied instead. But some policy analysts assert that, although comparable worth would virtually equalize male and female wages, many singleparent families headed by women would remain in poverty because many men earn wages that are below the poverty line. These policy analysts believe that the problem is not caused primarily by wage inequity but rather by low wages coupled with single parenthood, regardless of sex. As a solution, they challenge the government's assumption that a family's income should depend primarily on wages and urge the government to provide generous wage supplements (child and housing allowances) to single parents whose wages are low.

题目：

According to the passage, some economists believe that, in the United States, there would be smaller differences between the wages of women and men who do the same jobs if

选项:

A、equal pay laws were enforced more fully
B、more stringent equal pay laws were passed
C、a more rigorous comparable worth standard were developed and applied
D、more men entered the occupations in which women are concentrated
E、women received the same kind and amount of job training that men receive

答案:

A
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[Critical Reasoning]

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题目：

In 1563, in Florence's Palazzo Vecchio, Giorgio Vasari built in front of an existing wall a new wall on which he painted a mural. Investigators recently discovered a gap between Vasari's wall and the original, large enough to have preserved anything painted on the original. Historians believe that Leonardo da Vinci had painted, but left unfinished, a mural on the original wall; some historians had also believed that by 1563 the mural had been destroyed. However, it is known that in the late 1560s, when renovating another building, Santa Maria Novella, Vasari built a façade over its frescoes, and the frescoes were thereby preserved. Thus, Leonardo's Palazzo Vecchio mural probably still exists behind Vasari's wall.

Which of the following is an assumption on which the argument depends?

选项:

A、Leonardo rarely if ever destroyed artworks that he left unfinished.
B、Vasari was likely unaware that the mural in the Palazzo Vecchio had willingly been abandoned by Leonardo.
C、Vasari probably would not have built the Palazzo Vecchio wall with a gap behind it except to preserve something behind the new wall.
D、Leonardo would probably have completed the Palazzo Vecchio mural if he had had the opportunity to do so.
E、When Vasari preserved the frescoes of Santa Maria Novella he did so secretly.

答案:

C
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[Sentence Correction]

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题目：

A middleweight black hole weighs in at roughly 500 solar masses, hundreds of times more massive than the lightweight black holes produced by the collapse of individual stars, but thousands or even millions of times less in its mass as the heavyweight giants that lurk in the centers of galaxies.

选项:

A、thousands or even millions of times less in its mass as
B、it is thousands or even millions of times less massive as
C、thousands or even millions of times less massive than
D、yet it is thousands or even millions times less massive than
E、yet it is thousands or even millions of times less in its mass than

答案:

C
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[Critical Reasoning]

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题目：

The contingency-fee system, which allows lawyers and their clients to agree that the lawyer will be paid only in the event of success, does not increase the number of medical malpractice lawsuits brought against doctors. As attorneys must cover the costs for their time and research, they want to be assured that any medical malpractice case they accept on a contingency-fee basis has substantial merit. Consequently, attorneys turn away many people who come to see them, for lack of a good case.

The argument above is most vulnerable to criticism on the grounds that it fails to

选项:

A、specify the criteria attorneys use to judge the merits of a medical malpractice case
B、consider whether, in the absence of a contingency-fee option, even people with meritorious cases are much less likely to initiate litigation if they believe they might incur large legal fees
C、note whether, in successful medical malpractice lawsuits, the average monetary award after legal costs have been deducted is less under contingency-fee arrangements than otherwise
D、consider the effect of the contingency-fee system on the number of lawsuits sought for reasons other than medical malpractice
E、acknowledge the rising cost of medical malpractice insurance

答案:

B
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[Data Sufficiency]

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题目：

If S is a set of odd integers and 3 and –1 are in S, is –15 in S ?
  1. 5 is in S.
  2. Whenever two numbers are in S, their product is in S.

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
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[Sentence Correction]

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题目：

On the tournament roster are listed several tennis students, most all of which play as good as their instructors.

选项:

A、
A. most all of which play as good
B、
B. most all of whom play as good
C、
C. almost all of which play as well
D、
D. almost all of whom play as good
E、
E. almost all of whom play as well

答案:

E
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[Data Sufficiency]

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题目：

In the decimal representation of x, where 0 < x < 1, is the tenths digit of x nonzero?
(1)     16x is an integer.
(2)     8x is an integer.

选项:

答案:

B
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[Problem Solving]

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题目：

For which of the following functions f is f(x) = f(1-x) for all x?

选项:

A、f(x) = 1 - x
B、f(x) = 1 - x2
C、f(x) = x2 - (1-x)2
D、f(x) = x2(1-x)2
E、f(x) = x / (1-x)

答案:

D
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[Problem Solving]

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题目：

[2(4-1)2]/2(3-2)

选项:

A、28  
B、27
C、26
D、25
E、24

答案:

A
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1129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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3201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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3538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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1181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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2705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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1857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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1197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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1254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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297357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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[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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