问答

1答疑

[Critical Reasoning]

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文章：

Companies O and P each have the same number of employees who work the same number of hours per week. According to records maintained by each company, the employees of Company O had fewer job-related accidents last year than did the employees of Company P. Therefore, employees of Company O are less likely to have job-related accidents than are employees of Company P

题目：

Which of the following, if true, would most weaken the conclusion above?

选项:

A、The employees of Company P lost more time at work due to job-related accidents than did the employees of Company O.Company P considered more types of accidents to be job-related than did Company O
B、The employees of Company P were sick more often than were the employees of Company O. 
C、Several employees of Company O each had more than one job-related accident.
D、The majority of job-related accidents at Company O involved a single machine.

答案:

B
1答疑

[Problem Solving]

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题目：

Team A and Team B are competing against each other in a game of tug-of-war. Team A, consisting of 3 males and 3 females, decides to line up male, female, male, female, male, female. The lineup that Team A chooses will be one of how many different possible lineups?

选项:

A、    9
B、  12
C、  15
D、  36
E、720

答案:

D
1答疑

[Critical Reasoning]

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题目：

Which of the following most logically completes the argument?

A photograph of the night sky was taken with the camera shutter open for an extended period. The normal motion of stars across the sky caused the images of the stars in the photograph to appear as streaks. However, one bright spot was not streaked. Even if the spot were caused, as astronomers believe, by a celestial object, that object could still have been moving across the sky during the time the shutter was open, since __________.

选项:

A、
A. the spot was not the brightest object in the photograph
B、
B. the photograph contains many streaks that astronomers can identify as caused by noncelestial objects
C、
C. stars in the night sky do not appear to shift position relative to each other
D、
D. the spot could have been caused by an object that emitted a flash that lasted for only a fraction of the time that the camera shutter was open
E、
E. if the camera shutter had not been open for an extended period, it would have recorded substantially fewer celestial objects

答案:

D
1答疑

[Reading Comprehension]

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题目：

Which of the following best describes the purpose of the sentence in highlight text?

选项:

A、Introduce a definition
B、Signal a transition in focus
C、Summarize the preceding paragraph
D、Draw a contrast between two different theories.
E、Present information that contradicts the Preceding paragraph.

答案:

B
1答疑

[Critical Reasoning]

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题目：

The country of Ertland has never imported apples in any significant quantity because consumers there generally prefer the unique texture of Ertland-grown apples.  Nevertheless, apple growers from Kosolia, a neighboring country, plan to sell their apples in Ertland by selling Kosolia-grown apples at half the price of local apples and promoting them as a nourishing, low-cost alternative.
 
Which of the following, if true, casts most doubt on the viability of the plan by Kosolia's apple growers to sell their apples in Ertland?

选项:

A、Most of the varieties of apples grown in Ertland were originally derived from common Kosolian varieties.
B、Consumers in Ertland tend to spend about the same proportion of their income on fresh fruits and vegetables as do consumers in Kosolia.
C、At times in the past, Ertland has exported significant quantities of apples to Kosolia.
D、Some varieties of apples grown in Kosolia can be harvested throughout most of the year, whereas the varieties grown in Ertland can be harvested only during two months of the year.
E、profit of Ertland-grown apples are high enough in Ertland that growers, wholesalers, and retailers there could easily afford to reduce the price at which these apples are sold.

答案:

E
1答疑

[Data Sufficiency]

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题目：

What is the number of cans that can be packed in a certain carton?
  1. The interior volume of this carton is 2,304 cubic inches.
  2. The exterior of each can is 6 inches high and has a diameter of 4 inches.

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:

E
1答疑

[Data Sufficiency]

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题目：

The figure shows a T-hexagon whose interior is divided into equilateral triangles of 24 unit side.

A six-sided mosaic contains 24 triangular pieces of tile of the same size and shape, as shown in the figure above. If the sections of tile fit together perfectly, how many square centimeters of tile are in the mosaic?

  1. Each side of each triangular piece of tile is 9 centimeters long.
  2. The mosaic can be put inside a rectangular frame that is 40 centimeters wide.

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:

A
1答疑

[Reading Comprehension]

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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：

According to the passage, the studies referred to in line 12 reported which of the following about the effect of price on consumers’ perception of the performance risk associated with a new product?

选项:

A、Although most consumers regard price as an important factor, their perception of the performance risk associated with a new product is ultimately determined by the manufacturer’s reputation.
B、Price interacts with the presentation of an advertised message to affect perceived performance risk.
C、Price does not significantly affect consumers’ perception of the performance risk associated with a new product.
D、Consumers tend to regard price as more important than the manufacturer’s credibility when they are buying from that manufacturer for the first time.
E、Consumers are generally less concerned about a new product’s performance risk when that product is relatively expensive.

答案:

C
1答疑

[Reading Comprehension]

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文章：

题目：

According to the passage, feminist scholars cite Burckhardt’s view of Renaissance women primarily for which of the following reasons?

选项:

A、Burckhardt’s view forms the basis for most arguments refuting Kelly’s point of view.
B、Burckhardt’s view has been discredited by Kelly.
C、Burckhardt’s view is one that many feminist scholars wish to refute.
D、Burckhardt’s work provides rich historical evidence of inequality between Renaissance women and men.
E、Burckhardt’s work includes historical research supporting the arguments of the feminist scholars.

答案:

C
1答疑

[Reading Comprehension]

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文章：

Line In 1971 researchers hoping to predict earthquakes in
the short term by identifying precursory phenomena
(those that occur a few days before large quakes
but not otherwise) turned their attention to changes
(5) in seismic waves that had been detected prior to
earthquakes. An explanation for such changes was
offered by “dilatancy theory,” based on a well-known
phenomenon observed in rocks in the laboratory:
as stress builds, microfractures in rock close,
(10) decreasing the rock’s volume. But as stress
continues to increase, the rock begins to crack and
expand in volume, allowing groundwater to seep in,
weakening the rock. According to this theory, such
effects could lead to several precursory phenomena in
(15) the field, including a change in the velocity of seismic
waves, and an increase in small, nearby tremors.
Researchers initially reported success in identifying
these possible precursors, but subsequent analyses
of their data proved disheartening. Seismic waves
(20) with unusual velocities were recorded before some
earthquakes, but while the historical record confirms
that most large earthquakes are preceded by minor
tremors, these foreshocks indicate nothing about
the magnitude of an impending quake and are
(25) indistinguishable from other minor tremors that occur
without large earthquakes.
In the 1980s, some researchers turned their
efforts from short-term to long-term prediction.
Noting that earthquakes tend to occur repeatedly in
(30) certain regions, Lindh and Baker attempted to identify
patterns of recurrence, or earthquake cycles, on which
to base predictions. In a study of earthquake-prone
sites along the San Andreas Fault, they determined
that quakes occurred at intervals of approximately 22
(35) years near one site and concluded that there was a
95 percent probability of an earthquake in that area
by 1992. The earthquake did not occur within the time
frame predicted, however.
Evidence against the kind of regular
(40) earthquake cycles that Lindh and Baker tried
to establish has come from a relatively new
field, paleoseismology. Paleoseismologists
have unearthed and dated geological features
such as fault scarps that were caused by
(45) earthquakes thousands of years ago. They have
determined that the average interval between ten
earthquakes that took place at one site along the
San Andreas Fault in the past two millennia was
132 years, but individual intervals ranged greatly,
(50) from 44 to 332 years.

题目：

The author implies which of the following about the ability of the researchers mentioned in line 18 to predict earthquakes?

选项:

A、
They can identify when an earthquake is likely to occur but not how large it will be.
B、
They can identify the regions where earthquakes are likely to occur but not when they will occur.
C、
They are unable to determine either the time or the place that earthquakes are likely to occur.
D、
They are likely to be more accurate at short-term earthquake prediction than at long-term earthquake prediction.
E、
They can determine the regions where earthquakes have occurred in the past but not the regions where they are likely to occur in the future.

答案:

C
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1157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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3310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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3654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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1220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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2791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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[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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1292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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[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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312827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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