问答

4答疑

[Sentence Correction]

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题目：

The new image of Stone Age people as systematic hunters of large animals, rather than merely scavenging for meat, have emerged from the examination of tools found in Germany, including three wooden spears that archaeologists believe to be about 400,000 years old.

选项:

A、merely scavenging for meat, have emerged from the examination of tools found in Germany, including
B、as merely scavenging for meat, have emerged from examining tools found in Germany, which include
C、as mere meat scavengers, has emerged from examining tools found in Germany that includes
D、mere scavengers of meat, has emerged from the examination of tools found in Germany, which includes
E、mere scavengers of meat, has emerged from the examination of tools found in Germany, including

答案:

E
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[Critical Reasoning]

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题目：

The violent crime rate (number of violent crimes per 1,000 residents) in Meadowbrook is 60 percent higher now than it was four years ago.  The corresponding increase for Parkdale is only 10 percent.  These figures support the conclusion that residents of Meadowbrook are more likely to become victims of violent crime than are residents of Parkdale.
 
The argument above is flawed because it fails to take into account

选项:

A、changes in the population density of both Parkdale and Meadowbrook over the past four years
B、how the rate of population growth in Meadowbrook over the past four years compares to the corresponding rate for Parkdale
C、the ratio of violent to nonviolent crimes committed during the past four years in Meadowbrook and Parkdale
D、the violent crime rates in Meadowbrook and Parkdale four years ago
E、how Meadowbrook's expenditures for crime prevention over the past four years compare to Parkdale's expenditures

答案:

D
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[Critical Reasoning]

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题目：

The total market value of real estate in Altonville has steadily declined over the past four years.  This decline has meant that the overall figure on which the city's property tax is based—the assessed value of that real estate—has also declined.  The percentage of assessed value that was paid as property taxes to the city, however, did not change from year to year during this period.
 
The information above most strongly supports which of the following?

选项:

A、The percentage of Altonville's yearly revenue that comes from money collected in property taxes did not change over the past four years.
B、The percentage of Altonville's yearly revenue that comes from money collected in property taxes has declined steadily over the past four years.
C、The amount of revenue that Altonville collected from property taxes was lower last year than it was four years ago.
D、During the past four years, Altonville officials increased tax rates on other sources of revenue such as retail sales and business profits.
E、Altonville will soon require property owners to pay a higher percentage of the assessed value of their property as property tax.

答案:

C
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[Reading Comprehension]

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文章：

    Firms traditionally claim that they downsize (i.e., make permanent personnel cuts) for economic reasons, laying off supposedly unnecessary staff in an attempt to become more efficient and competitive. Organization theory would explain this reasoning as an example of the "economic rationality" that it assumes underlies all organizational activities. There is evidence that firms believe they are behaving rationally whenever they downsize; yet recent research has shown that the actual economic effects of downsizing are often negative for firms. Thus, organization theory cannot adequately explain downsizing; non-economic factors must also be considered.

    One such factor is the evolution of downsizing into a powerful business myth: managers simply believe that downsizing is efficacious. Moreover, downsizing nowadays is greeted favorably by the business press; the press often refers to soaring stock prices of downsizing firms (even though research shows that stocks usually rise only briefly after downsizing and then suffer a prolonged decline).

    Once viewed as a sign of desperation, downsizing is now viewed as a signal that firms are serious about competing in the global marketplace; such signals are received positively by key actors-financial analysts, consultants, shareholders who supply firms with vital organizing resources. Thus, even if downsizers do not become economically more efficient, downsizing's mythic properties give them added prestige in the business community, enhancing their survival prospects.

题目：

The primary purpose of the passage is to

选项:

A、criticize firms for engaging in the practice of downsizing
B、analyze the negative economic impact of downsizing on firms
C、offer an alternative to a traditional explanation for the occurrence of downsizing
D、chronicle how perceptions of downsizing have changed over time
E、provide evidence disputing the prevalence of downsizing

答案:

C
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[Problem Solving]

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文章：

题目：

Pat will walk from Intersection X to Intersection Y along a route that is confined to the square grid of four streets and three avenues shown in the map above. How many routes from X to Y can Pat take that have the minimum possible length?

选项:

A、68
B、10
C、14
D、16

答案:

C
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[Reading Comprehension]

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文章：

Line        Conodonts, the spiky phosphatic remains (bones
 and teeth composed of calcium phosphate) of
 tiny marine animals that probably appeared about
 520 million years ago, were once among the most
(5)controversial of fossils. Both the nature of the
 organism to which the remains belonged and the
 function of the remains were unknown. However,
 since the 1981 discovery of fossils preserving not
 just the phosphatic elements but also other remains
(10)of the tiny soft-bodied animals (also called conodonts)
 that bore them, scientists' reconstructions of the
 animals' anatomy have had important implications
 for hypotheses concerning the development of the
 vertebrate skeleton.
(15)     The vertebrate skeleton had traditionally been
 regarded as a defensive development, champions of
 this view postulating that it was only with the much
 later evolution of jaws that vertebrates became
 predators. The first vertebrates, which were soft-
(20)bodied, would have been easy prey for numerous
 invertebrate carnivores, especially if these early
 vertebrates were sedentary suspension feeders.
 Thus, traditionalists argued, these animals developed
 coverings of bony scales or plates, and teeth were
(25)secondary features, adapted from the protective
 bony scales. Indeed, external skeletons of this
 type are common among the well-known fossils of
 ostracoderms, jawless vertebrates that existed from
 approximately 500 to 400 million years ago.
(30)However, other paleontologists argued that many of
 the definitive characteristics of vertebrates, such as
 paired eyes and muscular and skeletal adaptations
 for active life, would not have evolved unless the
(35)first vertebrates were predatory. Teeth were more
 primitive than external armor according to this view,
 and the earliest vertebrates were predators.
      The stiffening notochord along the back of the
 body, V-shaped muscle blocks along the sides,
(40)and posterior tail fins help to identify conodonts as
 among the most primitive of vertebrates. The lack of
 any mineralized structures apart from the elements
 in the mouth indicates that conodonts were more
 primitive than the armored jawless fishes such as the
(45)ostracoderms. It now appears that the hard parts that
 first evolved in the mouth of an animal improved its
 efficiency as a predator, and that aggression rather
 than protection was the driving force behind the origin
 of the vertebrate skeleton.

题目：

It can be inferred that on the basis of the 1981 discovery of conodont remains, paleontologists could draw which of the following conclusions?

选项:

答案:

B
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[Critical Reasoning]

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题目：

In a study conducted in Pennsylvania, servers in various restaurants wrote "Thank you" on randomly selected bills before presenting the bills to their customers.  Tips on these bills were an average of three percentage points higher than tips on bills without the message.  Therefore, if servers in Pennsylvania regularly wrote "Thank you" on restaurant bills, their average income from tips would be significantly higher than it otherwise would have been.
 
Which of the following is an assumption on which the argument relies?

选项:

A、The 'Thank you' messages would have the same impact on regular patrons of a restaurant as they would on occasional patrons of the same restaurant.
B、Regularly seeing 'Thank you' written on their bills would not lead restaurant patrons to revert to their earlier tipping habits.
C、The written 'Thank you' reminds restaurant patrons that tips constitute a significant part of the income of many food servers.
D、The rate at which people tip food servers in Pennsylvania does not vary with how expensive a restaurant is.
E、Virtually all patrons of the Pennsylvania restaurants in the study who were given a bill with 'Thank you' written on it left a larger tip than they otherwise would have.

答案:

B
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[Sentence Correction]

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题目：

At the annual stockholders meeting, investors heard a presentation on the numerous challenges facing the company, including among them the threat from a rival's multibillion-dollar patent-infringement suit and the declining sales for the company's powerful microprocessor chip.

选项:

A、including among them the threat from a rival's multibillion-dollar patent-infringement suit and the declining sales for
B、which includes the threat of a rival's multibillion-dollar patent-infringement suit and declining sales of
C、included among these the threat from a rival's multibillion-dollar patent-infringement suit as well as a decline in sales for
D、among them the threat of a rival's multibillion-dollar patent-infringement suit and the decline in sales of
E、among these the threat from a rival's multibillion-dollar patent-infringement suit as well as the decline in sales for

答案:

D
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[Critical Reasoning]

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题目：

In virtually any industry, technological improvements increase labor productivity, which is the output of goods and services per person-hour worked. In Parland’s industries, labor productivity is significantly higher than it is in Vergia’s industries. Clearly, therefore, Parland’s industries must, on the whole, be further advanced technologically than Vergia’s are.

The argument is most vulnerable to which of the following criticisms?

选项:

A、It offers a conclusion that is no more than a paraphrase of one of the pieces of information provided in its support.
B、It presents as evidence in support of a claim information that is inconsistent with other evidence presented in support of the same claim.
C、It takes one possible cause of a condition to be the actual cause of that condition without considering any other possible causes.
D、It takes a condition to be the effect of something that happened only after the condition already existed.
E、It makes a distinction that presupposes the truth of the conclusion that is to be established.

答案:

C
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[Sentence Correction]

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题目：

Gusty westerly winds will continue to usher in a seasonably cool air mass into the region, as a broad area of high pressure will build and bring fair and dry weather for several days.

选项:

A、to usher in a seasonably cool air mass into the region, as a broad area of high pressure will build and
B、ushering in a seasonably cool air mass into the region and a broad area of high pressure will build that
C、to usher in a seasonably cool air mass to the region, a broad area of high pressure building, and
D、ushering a seasonably cool air mass in the region, with a broad area of high pressure building and
E、to usher a seasonably cool air mass into the region while a broad area of high pressure builds, which will

答案:

E
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[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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[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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[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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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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2703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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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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