问答

1答疑

[Reading Comprehension]

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文章：

The view has prevailed for the better part of the twentieth century that small firms do not perform an important role in Western economies.  Official policies in many countries have favored large units of production because there were strong reasons to believe that large firms were superior to small firms in virtually every aspect of economic performance--productivity, technological progress, and job security and compensation.  However, in the 1970s, evidence began to suggest that small firms in some countries were outperforming their larger counterparts.  Perhaps the best example of this trend was in the steel industry, where new firms entered the market in the form of "mini-mills," and small-firm employment expanded, while many large companies shut down plants and reduced employment.  Although no systematic evidence exists to determine unequivocally whether smaller units of production are as efficient as large firms or are, in fact, more efficient, some researchers have concluded that the accumulated evidence to date indicates that small firms are at least not burdened with an inherent size disadvantage.
 
Thus, an alternative view has emerged in the economics literature, arguing that small firms make several important contributions to industrial markets.  First, small firms are often the source of the kind of innovative activity that leads to technological change.  Small firms generate market turbulence that creates additional dimensions of competition, and they also promote international competition through newly created niches.  Finally, small firms in recent years have generated the preponderant share of new jobs.
 
However, empirical knowledge about the relative roles of large and small firms is generally based upon anecdotal evidence and case studies, and such evidence has proved inadequate to answer major questions concerning the role of small firms across various industries and nations.  An additional difficulty is that it is not obvious what criteria one should use to distinguish small firms from large ones.  While a "small firm" is often defined as an enterprise with fewer than 500 employees, research studies of small firms use a wide variety of definitions.

题目：

According to the passage, an important contribution of small firms to industrial markets is that small firms

选项:

A、operate more efficiently than large firms
B、offer high job security and compensation
C、cause international competition to decrease
D、help prevent market turbulence from affecting competition
E、frequently undertake activities that result in technological change

答案:

E
1答疑

[Critical Reasoning]

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题目：

City Official:  At City Hospital, uninsured patients tend to have shorter stays and fewer procedures performed than do insured patients, even though insured patients, on average, have slightly less serious medical problems at the time of admission to the hospital than uninsured patients have.  Critics of the hospital have concluded that the uninsured patients are not receiving proper medical care.  However, this conclusion is almost certainly false.  Careful investigation has recently shown two things:  insured patients have much longer stays in the hospital than necessary, and they tend to have more procedures performed than are medically necessary.
 
In the city official's argument, the two boldface portions play which of the following roles?

选项:

A、The first states the conclusion of the city official's argument; the second provides support for that conclusion.
B、The first is used to support the conclusion of the city official's argument; the second states that conclusion.
C、The first was used to support the conclusion drawn by hospital critics; the second states the position that the city official's argument opposes.
D、The first was used to support the conclusion drawn by hospital critics; the second provides support for the conclusion of the city official's argument.
E、The first states the position that the city official's argument opposes; the second states the conclusion of the city official's argument.

答案:

E
1答疑

[Reading Comprehension]

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文章：

题目：

The passage is primarily concerned with

选项:

A、presenting various groups’ views of the motives of those proposing certain legislation
B、contrasting the reasoning of various groups concerning their positions on certain proposed legislation
C、tracing the process whereby certain proposed legislation was eventually enacted
D、assessing the success of tactics adopted by various groups with respect to certain proposed legislation
E、evaluating the arguments of various groups concerning certain proposed legislation

答案:

B
1答疑

[Problem Solving]

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题目：

A bowl contains one marble labeled 0, one marble labeled 1, one marble labeled 2, and one marble labeled 3. The bowl contains no other objects. If two marbles are drawn randomly without replacement, what is the probability that they will add up to 3? 

选项:

A、1/12
B、1/8
C、1/6
D、1/4
E、1/3

答案:

E
1答疑

[Problem Solving]

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题目：

If Q is an odd number and the median of Q consecutive integers is 120, what is the largest of these integers?

选项:

A、
B、
C、
D、
E、

答案:

A
1答疑

[Reading Comprehension]

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文章：

Line         Manufacturers have to do more than build large
  manufacturing plants to realize economies of scale.
  It is true that as the capacity of a manufacturing
  operation rises, costs per unit of output fall as plant
(5) size approaches “minimum efficient scale,” where the
  cost per unit of output reaches a minimum,
  determined roughly by the state of existing technology
  and size of the potential market. However, minimum
  efficient scale cannot be fully realized unless a steady
(10) “throughput” (the flow of materials through a plant) is
  attained. The throughput needed to maintain the
  optimal scale of production requires careful
  coordination not only of the flow of goods through the
  production process, but also of the flow of input from
(15) suppliers and the flow of output to wholesalers and
  final consumers. If throughput falls below a critical
  point, unit costs rise sharply and profits disappear. A
  manufacturer’s fixed costs and “sunk costs” (original
  capital investment in the physical plant) do not
(20) decrease when production declines due to inadequate
  supplies of raw materials, problems on the factory
  floor, or inefficient sales networks. Consequently,
  potential economies of scale are based on the
  physical and engineering characteristics of the
(25) production facilities—that is, on tangible capital—but
  realized economies of scale are operational and
  organizational, and depend on knowledge, skills,
  experience, and teamwork—that is, on organized
  human capabilities, or intangible capital.
(30)      The importance of investing in intangible capital
  becomes obvious when one looks at what happens in
  new capital-intensive manufacturing industries. Such
  industries are quickly dominated, not by the first firms
  to acquire technologically sophisticated plants of
(35) theoretically optimal size, but rather by the first to
  exploit the full potential of such plants. Once some
  firms achieve this, a market becomes extremely hard
  to enter. Challengers must construct comparable
  plants and do so after the first movers have already
(40) worked out problems with suppliers or with new
  production processes. Challengers must create
  distribution networks and marketing systems in
  markets where first movers have all the contacts and
  know-how. And challengers must recruit management
(45) teams to compete with those that have already
  mastered these functional and strategic activities.


题目：

In the context of the passage as a whole, the second paragraph serves primarily to

选项:

A、provide an example to support the argument presented in the first paragraph
B、evaluate various strategies discussed in the first paragraph
C、introduce evidence that undermines the argument presented in the first paragraph
D、anticipate possible objections to the argument presented in the first paragraph
E、demonstrate the potential dangers of a commonly used strategy

答案:

A
1答疑

[Graphics Interpretation]

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题目：

On Days 1 through 4 of a recent week, Product X was out of stock at Retailer R. Day 1 shoppers are those shoppers who came to Retailer R on Day 1 of that week seeking Product X. For each of the first 3 days of that week, the graph shows the subsequent behavior of all the Day 1 shoppers who came to Retailer R seeking Product X on that day. Shoppers at Retailer R who purchased a different item in lieu of Product X paid an average of 30% more for the item.

From each drop-down menu, select the option that creates the most accurate statement based on the information provided.

选项:

% of Day 1 shoppers returned to the store on Day 3.

Shoppers at Retailer R who purchased substitute items from other manufacturers on Day 1 paid a total amount that was approximately % of the total all Day 1 shoppers would have paid had each of them been able to purchase Product X on Day 1.

答案:

B B
1答疑

[Problem Solving]

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题目：

On a recent trip, Cindy drove her car 290 miles, rounded to the nearest 10 miles, and used 12 gallons of gasoline, rounded to the nearest gallon. The actual number of miles per gallon that Cindy's car got on this trip must have been between

选项:

A、
B、
C、
D、
E、

答案:

D
1答疑

[Problem Solving]

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题目：

In a certain game, a large container is filled with red, yellow, green, and blue beads worth, respectively, 7, 5, 3, and 2 points each. A number of beads are then removed from the container. If the product of the point values of the removed beads is 147,000, how many red beads were removed?

选项:

A、5
B、4
C、3
D、2
E、0

答案:

D
1答疑

[Sentence Correction]

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题目：

Mixed with an equal part of water, ethylene glycol, a compound commonly used as automotive an antifreeze, is effective at temperatures as low as -30 degrees Fahrenheit.

选项:

A、temperatures as low
B、temperatures so low 
C、as low temperatures 
D、as few 
E、as little

答案:

A
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1156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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3299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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3645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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1213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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2785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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1903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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1224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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1288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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305036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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312162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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