问答

1答疑

[Data Sufficiency]

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题目：

The diagram consists of a rhombus with sides AD, DB, BC, and CA. Two right angled triangles that form this rhombus are DAB and ACB.

In the figure above, is the area of triangular region ABC equal to the area of triangular region DBA ?

  1. (AC)2 = 2(AD)2
  2. Δ ABC is isosceles.

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
1答疑

[Data Sufficiency]

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题目：

For what percent of those tested for a certain infection was the test accurate; that is, positive for those who had the infection and negative for those who did not have the infection?
(1) Of those who tested positive for the infection, 1/8 did not have the infection.
(2) Of those tested for the infection, 90 percent tested negative.

选项:

答案:

E
1答疑

[Sentence Correction]

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题目：

Today's technology allows manufacturers to make small cars more fuel-efficient now than at any time in their production history.

选项:

A、small cars more fuel-efficient now than at any time in their
B、small cars that are more fuel-efficient than they were at any time in their
C、small cars that are more fuel-efficient than those at any other time in
D、more fuel-efficient small cars than those at any other time in their
E、more fuel-efficient small cars now than at any time in

答案:

C
1答疑

[Data Sufficiency]

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题目：

选项:

A、with the simple thesis of consumers having
B、which had the simple thesis of consumers having
C、where the thesis was simple: consumers having
D、with a thesis that is a simple one: consumers have
E、whose thesis was simple: consumers have

答案:

C
1答疑

[Sentence Correction]

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题目：

Unlike battery-powered electric cars, automakers say that cars with fuel cells, which supply them with electricity, can provide driving range and performance similar to the internal combustion engine.

选项:

A、Unlike battery-powered electric cars, automakers say that cars with fuel cells, which supply them with electricity, can provide driving range and performance similar to
B、Unlike battery-powered electric cars, automakers say that cars with electricity supplied by fuel cells can exhibit driving range and performance similar to those provided by
C、Unlike battery-powered electric cars, fuel cells that supply cars with electricity can provide driving range and performance that automakers say is similar to
D、Automakers say that unlike battery-powered electric cars, fuel cells that supply cars with electricity can provide driving range and performance similar to
E、Automakers say that unlike battery-powered electric cars, cars with electricity supplied by fuel cells can exhibit driving range and performance similar to those provided by

答案:

E
1答疑

[Data Sufficiency]

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题目：

If the average (arithmetic mean) of n consecutive odd integers is 10, what is the least of the integers?
  1. The range of the n integers is 14.
  2. The greatest of the n integers is 17.

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 (1) and (2) 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:

D
1答疑

[Problem Solving]

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题目：

If 9x = 27y, which of the following expresses x in terms of y?

选项:

A、3y
B、3y-1
C、32y-1
D、32y-3
E、33y-2

答案:

E
1答疑

[Critical Reasoning]

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题目：

A major network news organization experienced a drop in viewership in the week following the airing of a controversial report on the economy. The network also received a very large number of complaints regarding the report. The network, however, maintains that negative reactions to the report had nothing to do with its loss of viewers.

Which of the following, if true, most strongly supports the network's position?

选项:

A、The other major network news organizations reported similar reductions in viewership during the same week.
B、The viewers who registered complaints with the network were regular viewers of the news organization's programs.
C、Major network news organizations publicly attribute drops in viewership to their own reports only when they receive complaints about those reports.
D、This was not the first time that this network news organization has aired a controversial report on the economy that has inspired viewers to complain to the network.
E、Most network news viewers rely on network news broadcasts as their primary source of information regarding the economy.

答案:

A
1答疑

[Table Analysis]

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文章：

A scholar examined certain characteristics of a sample of 8 artworks selected from the collection of an art museum in the southwestern United States. These characteristics are summarized in the table; the term figurative is applied to works that depict the human figure.

Work On view? (yes/no) Hispanic or Native American artist? (yes/no) Gender of artist (F/M) Year created Medium Figurative? (yes/no)
Back to the Blanket no yes M 2008 textile yes
Canyon de Chelly no no M 1983 photograph yes
Flight Field no no M 1974 photograph no
Jaynelle Across the Sea no no M 2006 charcoal/mixed media yes
My Children yes no M 1920 oil on canvas yes
Portrait of the Eternal no yes M 1934 photograph yes
Roadside Stand Near Birmingham no no M 1936 photograph no
Sibylle Binder no no F 1928 photograph yes

题目：

For each of the following statements concerning the works in this sample, select Yes if the statement is supported by the information provided; otherwise, select No.

选项:

A、The majority of the photographs are figurative.
B、The figurative photographs were all created prior to 1950.
C、There is at least one artwork by a female artist who is either Hispanic or Native American.

答案:

A B B
1答疑

[Multi-Source Reasoning]

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文章：

Kenyan IPO pricing

    Researchers recently examined the initial public offering (IPO)—a private firm's first sale of stock shares to the public—of firms listed on Kenya's Nairobi Stock Exchange (NSE) between 1994 and 2008. During this time, the number of IPOs listed per year varied from zero to four The researchers wanted to exam­ine the extent to which four different variables—investor sentiment, firm size, board prestige, and firm age—affected the IPO stock share price, which is set by the firm. They hypothesized that all four variables would show a strong positive correlation with this IPO asking price. However, after examining the firms listed, they were surprised to find that none of the variables showed a strong positive correlation with IPO pricing, and in fact investor sentiment and board prestige both showed a strong negative correlation.

    The researchers also discovered that nearly all of these IPOs were underpriced by an aver­age of 50 percent, which is to say the IPO share prices were about half of what the share prices were at the close of that first day of trading. Such underpricing constitutes a loss to the listed firm because the firm could have immediately raised more money with a higher price. The researchers noted that firms should take care to set an IPO price low enough to capture investor interest but high enough to generate sufficient capital for the firm.

Kenyan IPOs, 1994-2008

    The table lists companies, examined by the researchers, that had their IPO on the NSE between 1994 and 2008, together with the IPO share price, first day closing price, and percent underpricing. Prices are in Kenyan shillings.

题目：

8. For each of the following statements, select Supported if the statement is supported by the information provided about NSE IPOs. Otherwise select Not supported.

选项:

A、The board of Safaricom was likely considered more prestigious than that of Co-Operative Bank at the time of their IPOs.
B、Kenya Re and Eveready were approximately the same size firms at the time of their IPOs.
C、When their IPO prices were set, investor sentiment was likely more favorable toward Kengen than toward Scangroup or Eveready.

答案:

A B B
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334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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1289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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1467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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565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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1318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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941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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631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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637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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150844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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157952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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