问答

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[Problem Solving]

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题目：

Of the 32 students in a certain class, 15 are in a music club and 20 are in a dance club. If 10 of the students are not in either club, how many of the students are in only one of the two clubs?

选项:

A、5
B、9
C、10
D、17
E、25

答案:

B
1答疑

[Argument Essay]

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题目：

Read the statement and the instructions that follow it,and then make any notes that will help you plan your response.Begin typing your response in the box at the bottom of the screen.
 
The following appeared m the letters-to-the-editor section of a local newspaper.
 
"Muscle Monthly, a fitness magazine that regularly features pictures of bodybuilders using state-of-the-art exercise machines, frequently sells out, according  to the owner of Skyview Newsstand. To help maximize fitness levels in our town's residents, we should, therefore, equip our new community fitness center with such machines."
 
Discuss how well reasoned.., etc.

选项:

答案:

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[Problem Solving]

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题目：

Mary's income is 60 percent more than Tim's income, and Tim's income is 40 percent less than Juan's income. What percent of Juan's income is Mary's income?

选项:

A、124%120%
B、96%
C、80%
D、64%

答案:

C
1答疑

[Reading Comprehension]

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文章：

Citing the fact that the real gross domestic product (GDP) per capita was higher in 1997 than ever before, some journalists have argued that the United States economy performed ideally in 1997. However, the real GDP is almost always higher than ever before; it falls only during recessions. One point these journalists overlooked is that in 1997, as in the twenty-four years immediately preceding it, the real GDP per capita grew nearly one-half percent a year more slowly than it had on average between 1873 and 1973. Were the 1997 economy as robust as claimed, the growth rate of real GDP per capita in 1997 would have surpassed the average growth rate of real GDP per capita between 1873 and 1973 because over fifty percent of the population worked for wages in 1997 whereas only forty percent worked for wages between 1873 and 1973. If the growth rate of labor productivity (output per hour of goods and services) in 1997 had equaled its average growth rate between 1873 and 1973 of more than two percent, then, given the proportionately larger workforce that existed in 1997, real GDP per capita in 1997 would have been higher than it actually was, since output is a major factor in GDP. However, because labor productivity grew by only one percent in 1997, real GDP per capita grew more slowly in 1997 than it had on average between 1873 and 1973.

题目：

It can be inferred from the passage that which of the following is the reason that the author faults the journalists referred to in the highlighted text?

选项:

A、They believe that the real GDP per capita in 1997 was higher than the real GDP per capita had ever been before.
B、They argue that the rate at which real GDP per capita grew in 1997 was faster than the average rate at which it had grown between 1873 and 1973. 
C、They overestimate the effect of labor productivity on the real GDP per capita in 1997. 
D、They overestimate the amount by which real GDP per capita in 1997 surpassed real GDP per capita in earlier years. 
E、They fail to consider the real GDP per capita in 1997 within an appropriate historical context.

答案:

E
1答疑

[Reading Comprehension]

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文章：

Line        The argument for “monetizing”—or putting a
 monetary value on—ecosystem functions may be
 stated thus: Concern about the depletion of natural
 resources is widespread, but this concern, in the
(5)absence of an economic argument for conservation,
 has not translated into significant conservational
 progress. Some critics blame this impasse on
 environmentalists, whom they believe fail to address
 the economic issues of environmental degradation.
(10)Conservation can appear unprofitable when compared
 with the economic returns derived from converting
 natural assets (pristine coastlines, for example) into
 explicitly commercial ones (such as resort hotels).
 But according to David Pearce, that illusion stems
(15)from the fact that “services” provided by ecological
 systems are not traded on the commodities market,
 and thus have no readily quantifiable value. To
 remedy this, says Pearce, one has to show that all
 ecosystems have economic value—indeed, that all
(20)ecological services are economic services. Tourists
 visiting wildlife preserves, for example, create
 jobs and generate income for national economies;
 undisturbed forests and wetlands regulate water
 runoff and act as water-purifying systems, saving
(25)millions of dollars worth of damage to property
 and to marine ecosystems. In Gretchen Daily’s
 view, monetization, while unpopular with many
 environmentalists, reflects the dominant role that
 economic considerations play in human behavior,
(30)and the expression of economic value in a common
 currency helps inform environmental decision-making
 processes.


题目：

According to the passage, Daily sees monetization as an indication of which of the following?

选项:

A、 has been dated to be 3.47 billion years old and thus is
B、has been dated at 3.47 billion years old and thus
C、have been dated to be 3.47 billion years old and thus are
D、have been dated as being 3.47 billion years old and thus
E、have been dated at 3.47 billion years old and thus are

答案:

A
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[Sentence Correction]

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题目：

In late 1997, the chambers inside the pyramid of the Pharaoh Menkaure at Giza were closed to visitors for cleaning and repair due to moisture exhaled by tourists, which raised its humidity to such levels so that salt from the stone was crystallizing and fungus was growing on the walls.

选项:

A、due to moisture exhaled by tourists, which raised its humidity to such levels so that salt from the stone was crystallizing
B、due to moisture that tourists had exhaled, thereby raising its humidity to such levels that salt from the stone would crystallize
C、because tourists were exhaling moisture, which had raised the humidity within them to levels such that salt from the stone would crystallize
D、because of moisture that was exhaled by tourists raising the humidity within them to levels so high as to make the salt from the stone crystallize
E、because moisture exhaled by tourists had raised the humidity within them to such levels that salt from the stone was crystallizing

答案:

E
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[Reading Comprehension]

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文章：

Line    According to economic signaling theory,
  consumers may perceive the frequency with
  which an unfamiliar brand is advertised as a cue
  that the brand is of high quality. The notion that
(5) highly advertised brands are associated with
  high-quality products does have some empirical
  support. Marquardt and McGann found that
  heavily advertised products did indeed rank high
  on certain measures of product quality. Because
(10) large advertising expenditures represent
  a significant investment on the part of a
  manufacturer, only companies that expect to
  recoup these costs in the long run, through
  consumers’ repeat purchases of the product,
(15) can afford to spend such amounts.
       However, two studies by Kirmani have found
  that although consumers initially perceive expensive
  advertising as a signal of high brand quality,
  at some level of spending the manufacturer’s
(20) advertising effort may be perceived as unreasonably
  high, implying low manufacturer confidence in
  product quality. If consumers perceive excessive
  advertising effort as a sign of a manufacturer’s
  desperation, the result may be less favorable
(25) brand perceptions. In addition, a third study by
  Kirmani, of print advertisements, found that the
  use of color affected consumer perception of
  brand quality. Because consumers recognize that
  color advertisements are more expensive than
(30) black and white, the point at which repetition of an
  advertisement is perceived as excessive comes
  sooner for a color advertisement than for a blackand-
  white advertisement.


题目：

The primary purpose of the passage is to

选项:

A、present findings that contradict one explanation for the effects of a particular advertising practice
B、argue that theoretical explanations about the effects of a particular advertising practice are of limited value without empirical evidence
C、discuss how and why particular advertising practices may affect consumers’ perceptions
D、contrast the research methods used in two different studies of a particular advertising practice
E、explain why a finding about consumer responses to a particular advertising practice was unexpected

答案:

C
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[Sentence Correction]

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题目：

A Labor Department study states that the numbers of women employed outside the home grew by more than a thirty-five percent increase in the past decade and accounted for more than sixty-two percent of the total growth in the civilian work force.

选项:

A、numbers of women employed outside the home grew by more than a thirty-five percent increasenumbers of women employed outside the home grew more than thirty-five percent
B、numbers of women employed outside the home were raised by more than thirty-five percent
C、number of women employed outside the home increased by more than thirty-five percent
D、number of women employed outside the home was raised by more than a thirty-five percent increase

答案:

D
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[Problem Solving]

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题目：

If x2 – 2 < 0, which of the following specifies all the possible values of x?

选项:

A、0 < x < 2
B、
C、
D、–2 < x < 0
E、–2 < x < 2

答案:

C
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[Critical Reasoning]

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题目：

Commentator: The theory of trade retaliation states that countries closed out of any of another country’s markets should close some of their own markets to the other country in order to pressure the other country to reopen its markets. If every country acted according to this theory, no country would trade with any other.

The commentator’s argument relies on which of the following assumptions?

选项:

A、No country actually acts according to the theory of trade retaliation.
B、No country should block any of its markets to foreign trade.
C、Trade disputes should be settled by international tribunal.
D、For any two countries, at least one has some market closed to the other.
E、Countries close their markets to foreigners to protect domestic producers.

答案:

D
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1145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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3269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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3624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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[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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[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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[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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[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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[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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[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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