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[Sentence Correction]

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题目：

Digging in sediments in northern China, evidence has been gathered by scientists suggesting that complex life-forms emerged much earlier than they had previously thought.

选项:

A、evidence has been gathered by scientists suggesting that complex life-forms emerged much earlier than they had
B、evidence gathered by scientists suggests a much earlier emergence of complex life-forms than had been
C、scientists have gathered evidence suggesting that complex life-forms emerged much earlier than
D、scientists have gathered evidence that suggests a much earlier emergence of complex life-forms than that which was
E、scientists have gathered evidence which suggests a much earlier emergence of complex life-forms than that

答案:

C
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[Critical Reasoning]

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题目：

As a construction material, bamboo is as strong as steel and sturdier than concrete. Moreover, in tropical areas bamboo is a much less expensive construction material than either steel or concrete and is always readily available. In tropical areas, therefore, building with bamboo makes better economic sense than building with steel or concrete, except where land values are high.

Which of the following, if true, most helps to explain the exception noted above?

选项:

A、Buildings constructed of bamboo are less likely to suffer earthquake damage than are steel and concrete buildings.
B、Bamboo is unsuitable as a building material for multistory buildings.
C、In order to protect it from being damaged by termites and beetles, bamboo must be soaked, at some expense, in a preservative.
D、In some tropical areas, bamboo is used to make the scaffolding that is used during large construction projects.
E、Bamboo growing in an area where land values are increasing is often cleared to make way for construction.

答案:

B
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题目：

Which of the following most logically completes the argument given?

Asthma, a chronic breathing disorder, is significantly more common today among adult competitive swimmers than it is among competitive athletes who specialize in other sports. Although chlorine is now known to be a lung irritant and swimming pool water is generally chlorinated, it would be rash to assume that frequent exposure to chlorine is the explanation of the high incidence of asthma among these swimmers, since __________.

选项:

答案:

D
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题目：

The soft drink company's flat earnings for the second quarter reflect the
success of both its restructured global bottling system and the extent to
which poor currency exchange rates keep down profits for multinational
companies

选项:

A、reflect the success of both its restructured global bottling system and the extent to which poor currency exchange rates keep
B、reflect both the success of its restructured global bottling system and the extent to which poor currency exchange rates are keeping
C、reflect both the success of its restructured global bottling system and the extent of poor currency exchange rates keeping
D、both reflect the success of its restructured global bottling system and to what extant poor currency exchange rates are keeping
E、both reflect the success of its restructured global bottling system and to what extent poor currency exchange rages are keeping

答案:

B
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[Data Sufficiency]

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题目：

A school administrator will assign each student in a group of n students to one of m classrooms. If 3 < m < 13 < n, is it possible to assign each of the n students to one of the m classrooms so that each classroom has the same number of students assigned to it?
(1)   It is possible to assign each of 3n students to one of m classrooms so that each classroom has the same number of students assigned to it.
(2)   It is possible to assign each of 13n students to one of m classrooms so that each classroom has the same number of students assigned to it.

选项:

答案:

B
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题目：

Which of the following most logically completes the passage below?
 
Heavy rains during Centralia's corn planting season prevented some farmers there from planting corn.  It is now the planting season for soybeans, another of Centralia's principal crops, and those fields originally intended for corn are dry enough for planting.  Nonetheless, even though soybean prices are unusually high at present, the farmers will leave most of these fields empty rather than plant them with soybeans, since            .　　

选项:

A、the extensive rains have led to an increase in the price of corn
B、some Centralian farmers anticipate serious financial losses due to the extremely wet spring planting season
C、chemicals that were used to prepare the fields for corn planting would stunt the growth of soybeans
D、the majority of Centralia's corn farmers were able to plant corn as they had intended, despite the wet planting season
E、many Centralian farmers grow both corn and soybeans

答案:

C
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题目：

Both weakened by concern about the government's agreement with the International Monetary Fund and by growing fears of a rise in inflation, the country's currency continued its slide to a record low against the dollar, which forced the central bank to intervene for the fourth time in a week.

选项:

A、(A) Both weakened by concern about the government's agreement with the International Monetary Fund and by growing fears of a rise in inflation, the country's currency continued its slide to a record low against the dollar, which forced
B、(B) Both concern about the government's agreement with the International Monetary Fund and the growing fears of a rise in inflation weakened the country's currency, continuing its slide to a record low against the dollar, which forced
C、(C) Both because it was weakened by concern about the government's agreement with the International Monetary Fund and by growing fears of a raise in inflation, the country's currency continued its slide to a record low against the dollar, forcing
D、(D) The country's currency, weakened both by concern about the government's agreement with the International Monetary Fund and by growing fears of a rise in inflation, continued its slide to a record low against the dollar, forcing
E、(E) The country's currency, weakened by both concern about the government's agreement with the International Monetary Fund and growing fears of a raise in inflation, continued its slide to a record low against the dollar, which forced

答案:

D
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题目：

Veterinarians generally derive some of their income from selling several manufacturers' lines of pet-care products. Knowing that pet owners rarely throw away mail from their pet's veterinarian unread, one manufacturer of pet-care products offered free promotional materials on its products to veterinarians for mailing to their clients. Very few veterinarians accepted the offer, however, even though the manufacturer's products are of high quality.

Which of the following, if true, most helps to explain the veterinarians' reaction to the manufacturer's promotional scheme?

选项:

A、Most of the veterinarians to whom the free promotional materials were offered were already selling the manufacturer's pet-care products to their clients.
B、The special promotional materials were intended as a supplement to the manufacturer's usual promotional activities rather than as a replacement for them.
C、The manufacturer's products, unlike most equally good competing products sold by veterinarians, are also available in pet stores and in supermarkets.
D、Many pet owners have begun demanding quality in products they buy for their pets that is as high as that in products they buy for themselves.
E、Veterinarians sometimes recommend that pet owners use products formulated for people when no suitable product specially formulated for animals is available.

答案:

C
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题目：

Hea Sook: One should not readily believe urban legends. Most legends are propagated because the moral lesson underlying them supports a political agenda. People will repeat a tale if it fits their purpose. They may not deliberately spread untruths, but neither are they particularly motivated to investigate deeply to determine if the tale they are telling is true.

Kayla: But people would not repeat stories that they did not believe were true. Therefore, one can safely assume that if a story has been repeated by enough people then it is more likely to be true.

Kayla's reply is most vulnerable to the criticism that it

选项:

A、does not specify how many people need to repeat a story before someone is justified believing it
B、overstates the significance of political agendas in the retelling of stories
C、fails to address the claim that people will not verify the truth of a story that fits their purpose
D、implicitly supports the claim that the people repeating legends are not deliberately spreading untruths
E、cannot distinguish people's motivations for repeating urban legends from their motivations for repeating other types of story

答案:

C
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题目：

An overwhelming proportion of the most productive employees at SaleCo's regional offices work not eight hours a day, five days a week, as do other SaleCo employees, but rather ten hours a day, four days a week, with Friday off.  Noting this phenomenon, SaleCo's president plans to increase overall productivity by keeping the offices closed on Fridays and having all employees work the same schedule—ten hours a day, four days a week.
 
Which of the following, if true, provides the most reason to doubt that the president's plan, if implemented, will achieve its stated purpose?
 

选项:

A、Every employee of SaleCo who has been there for at least a year is entitled to three weeks of vacation each year and must be paid his or her regular salary for that time off.
B、None of the employees who work four days a week had volunteered to work that schedule, but all were assigned to it by their supervisors.
C、Working ten hours a day has allowed the most productive employees to work two hours alone each day in their respective offices relatively undisturbed by fellow employees.
D、Employees at SaleCo are compensated not on the basis of how many hours a week they work but on the basis of how productive they are during the hours they are at work.
E、Some of SaleCo's employees have indicated to company officials that they would quit if not allowed to work the same hours as the company's most productive employees.

答案:

C
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1917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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4981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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5670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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1899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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4115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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2875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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1903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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1993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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425131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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432268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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