问答

1答疑

[Two-part Analysis]

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试题详情

题目：

For each positive integer n, the quantity sn is defined such that sn + 2 = (sn)2 – sn + 1. In addition, s2 = 1.

In the table, select values for s1 and s4 that are jointly compatible with these conditions. Select only two values, one in each column.

选项:

A、–12
B、–7
C、–3
D、–1

答案:

C B
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：

The “past research” mentioned in line 25 suggests which of the following about perceived performance risk?

选项:

A、The more expensive a new product is, the more likely consumers may be to credit advertised claims about that product.
B、The more familiar consumers are with a particular manufacturer, the more willing they may be to assume some risk in the purchase of a new product being advertised by that manufacturer.
C、Consumers’ perception of the performance risk associated with a new product being advertised may be influenced by an interplay between the product’s price and the manufacturer’s credibility.
D、Consumers may be more likely to believe that a product will function as it is advertised to do when they have bought products from a particular manufacturer before.
E、The price of a particular advertised product may have less impact than the manufacturer’s credibility on consumers’ assessment of the performance risk associated with that product.

答案:

C
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[Sentence Correction]

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题目：

Of all the vast tides of migration that have swept through history, maybe none is more concentrated as the wave that brought 12 million immigrants onto American shores in little more than three decades.

选项:

A、maybe none is more concentrated as
B、it may be that none is more concentrated as
C、perhaps it is none that is more concentrated than
D、maybe it is none that was more concentrated than
E、perhaps none was more concentrated than

答案:

E
1答疑

[Reading Comprehension]

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文章：

Line The fact that superior service can generate a
competitive advantage for a company does not
mean that every attempt at improving service will
create such an advantage. Investments in service,
(5) like those in production and distribution, must be
balanced against other types of investments on the
basis of direct, tangible benefits such as cost
reduction and increased revenues. If a company is
already effectively on a par with its competitors
(10) because it provides service that avoids a damaging
reputation and keeps customers from leaving at an
unacceptable rate, then investment in higher
service levels may be wasted, since service is a
deciding factor for customers only in extreme
(15) situations.
This truth was not apparent to managers of one
regional bank, which failed to improve its
competitive position despite its investment in
reducing the time a customer had to wait for a
(20) teller. The bank managers did not recognize the
level of customer inertia in the consumer banking
industry that arises from the inconvenience of
switching banks. Nor did they analyze their service
improvement to determine whether it would attract
(25) new customers by producing a new standard of
service that would excite customers or by proving
difficult for competitors to copy. The only merit of
the improvement was that it could easily be
described to customers.

题目：

The discussion of the regional bank in the second paragraph serves which of the following functions within the passage as a whole?

选项:

答案:

E
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[Sentence Correction]

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题目：

Schistosomiasis, a disease caused by a parasitic worm, is prevalent in hot, humid climates, and it has become more widespread as irrigation projects have enlarged the habitat of the freshwater snails that are the parasite's hosts for part of its life cycle.

选项:

答案:

A
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[Problem Solving]

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题目：

If 2 is the greatest number that will divide evenly into both x and y, what is the greatest number that will divide evenly into both 5x and 5y? 

选项:

A、A2
B、B4
C、C6
D、D8
E、E10

答案:

E
1答疑

[Critical Reasoning]

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题目：

Absolute, or perfect, pitch—the ability to identify the pitch of an isolated musical note—is rare in the general population, but relatively common among trained musicians.  A survey of fifteen-year-old music students showed that absolute pitch was more common among those who had been studying music since a very early age than among those who started studying a few years later.  Thus very early musical training aids in the development of absolute pitch.
 
Which of the following, if true, most seriously weakens the argument?
椠

选项:

A、Young children with absolute pitch might not realize that they have it until they become adolescents.
B、Possession of absolute pitch can hamper a person's enjoyment of musical performances.
C、Most musicians who have absolute pitch started their training before age seven.
D、It is never the goal of early musical training to develop absolute pitch.

答案:

A
1答疑

[Reading Comprehension]

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文章：

The storms most studied by climatologists have been those that are most easily understood by taking atmospheric measurements.  Hurricanes and tornadoes, for example, are spatially confined, the forces that drive them are highly concentrated, and they have distinctive forms and readily quantifiable characteristics.  Consequently, data about them are abundant, and their behavior is relatively well understood, although still difficult to predict.
 
Hurricanes and tornadoes are also studied because they are highly destructive storms, and knowledge about their behavior can help minimize injury to people and property.  But other equally destructive storms have not been so thoroughly researched, perhaps because they are more difficult to study.  A primary example is the northeaster, a type of coastal storm that causes significant damage along the eastern coast of North America.  Northeasters, whose diffuse nature makes them difficult to categorize, are relatively weak low-pressure systems with winds that rarely acquire the strength of even the smallest hurricane.  Although northeasters are perceived to be less destructive than other storms, the high waves associated with strong northeasters can cause damage comparable to that of a hurricane, because they can affect stretches of coast more than 1,500 kilometers long, whereas hurricanes typically threaten a relatively small ribbon of coastline--roughly 100 to 150 kilometers.

题目：

According to the passage, which of the following is true of northeasters?

选项:

A、They have only recently been identified as a distinct storm type.
B、They are more destructive than tornadoes.
C、They are low-pressure systems.
D、They affect a relatively small segment of the eastern coast of North America.
E、Their winds are typically as strong as those of small hurricanes.

答案:

C
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[Reading Comprehension]

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题目：

The passage suggests which of the following about merchants in the post-Civil War southern United States?

选项:

A、They sought to preserve pre-Civil War social conditions.
B、Their numbers in the legislatures had been diminished.
C、Their businesses had suffered from a loss of collateral.
D、They were willing to make business arrangements with former slaves.
E、Their profits had declined because planters defaulted on debts for supply advances.

答案:

D
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[Sentence Correction]

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题目：

Regardless of their form or function, all aerodynamically enhanced, curved objects made for throwing have been called boomerangs by non-Australians ever since 1788, when Europeans saw Dharug-speaking men tossing "bumariny" in the area later known as Sydney.

选项:

A、Regardless of their form or function, all aerodynamically enhanced, curved objects made for throwing have been called boomerangs by non-Australians ever since 1788,
B、Regardless of their form or function, any aerodynamically enhanced, curved object made for throwing has been called a boomerang by non-Australians ever since 1788,
C、Ever since 1788, non-Australians have called all aerodynamically enhanced, curved objects made for throwing boomerangs, regardless of their form or function, from
D、Ever since 1788, any aerodynamically enhanced, curved object made for throwing has been called a boomerang by non-Australians, regardless of its form or function, from
E、Non-Australians have called all aerodynamically enhanced, curved objects made for throwing boomerangs ever since 1788, regardless of their form or function, from

答案:

A
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343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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1301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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1480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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572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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1326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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945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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633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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640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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151619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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158727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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