问答

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[Problem Solving]

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题目：

             150, 200, 250, n
 
Which of the following could be the median of the 4 integers listed above?
 
I.       175
II.      215
III.     235

选项:

A、I only
B、II only
C、I and II only
D、II and III only
E、I, II, and III

答案:

C
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[Sentence Correction]

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题目：

One report concludes that many schools do not have, or likely to have, enough computers to use them effectively.

选项:

A、 or
B、 nor
C、 or are
D、 nor are they
E、 nor are not

答案:

D
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[Sentence Correction]

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题目：

Ozone, a special form of oxygen that screens out harmful ultraviolet rays, reaches high concentrations twelve miles above Earth, where it has long appeared that it was immune from human influence; we have now realized, though, that emissions of industrial chlorofluorocarbons deplete the ozone layer.

选项:

A、has long appeared that it was immune from
B、has long appeared to have been immune from
C、has long appeared as being immune to
D、had long appeared immune to
E、had long appeared that it was immune to

答案:

D
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[Sentence Correction]

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题目：

With no natural predators and expanses of green suburban neighborhoods that allow no hunting, wildlife officials estimate the New Jersey deer population to have grown to exceed 175,000.

选项:

A、With no natural predators and expanses of green suburban neighborhoods that allow no hunting, wildlife officials estimate the New Jersey deer population to have
B、With no natural predators and with expanses of green suburban neighborhoods that do not allow hunting, wildlife officials' estimate of the deer population in New Jersey has
C、With no natural predators and with expanses of green suburban neighborhoods where there is no hunting, the deer population in New Jersey, wildlife officials estimate, has
D、Without natural predators and no hunting allowed in expanses of green suburban neighborhoods, New Jersey has a deer population that wildlife officials estimate to have
E、Without natural predators and with expanses of green suburban neighborhoods where there is no hunting, wildlife officials in New Jersey estimate a deer population that has

答案:

C
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[Sentence Correction]

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题目：

According to entomologists, single locusts are quiet creatures, but when locusts are placed with others of their species, they become excited, change color, vibrate, and even hum.

选项:

A、when locusts are placed with others of their species,
B、when placing them with others of their species, then
C、locusts, when placed with others of their species,
D、placing them with others of their species,
E、placed with others of their species, then

答案:

A
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[Critical Reasoning]

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题目：

As part of major renovations to Flowertown's Main Street train station, consultants to the train company proposed moving the station's entrance from its current valuable Main Street location to a low-rent adjoining side street and then leasing the high-rent entrance space to retail businesses.  In that way, the train company could easily pay for those and all other proposed renovations without negative impact on its tight budget.
 
Which of the following, if true, would most strongly support the consultants' proposal?

选项:

A、More train commuters are employed in businesses located on Main Street than in businesses located on the adjoining side street.
B、A reliable survey of Flowertown's commuters showed that virtually none of them would use the train any less frequently if the station's entrance were moved.
C、The high-rent block of Flowertown's Main Street includes several buildings whose owners currently seek to replace long-standing tenants lost in recent months.
D、If the station's entrance were moved, the train company would need to begin costly renovations to its Main Street entrance space.
E、Ridership on Flowertown trains declined only slightly from 1970 to 1985 while other train companies lost large numbers of commuters.

答案:

B
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[Critical Reasoning]

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题目：

Which of the following most logically completes the argument below?
The expansion of large-scale farming in Africa and Asia has destroyed much of the natural vegetation on which elephants have historically depended, forcing them to turn to cultivated land to satisfy their enormous appetites. As a result, farmers have lost millions of dollars worth of crops annually. Yet even if elephant sanctuaries were created on a widespread basis to guarantee elephants sufficient natural vegetation, the raiding would likely persist, since            

选项:

A、when elephants forage for food, they typically travel in herds.
B、Foraging elephants have been known to cause substantial damage even to plants that they do not eat.
C、Some of the land where crops have suffered extensive damage from elephants has been allowed to return to its natural state.
D、Elephants tend to prefer cultivated crops to wild vegetation as a food source.
E、Elephant sanctuaries are usually created in areas that are rich in the natural vegetation on which elephants have historically depended.

答案:

D
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[Data Sufficiency]

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题目：

Is the integer n odd?

(1)n is divisible by3.

(2)2n is divisible by twice as many positive integers as n.

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 statement 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:

B
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[Critical Reasoning]

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题目：

Which of the following most logically completes the passage?
 
Concerned about financial well-being of its elderly citizens, the government of Runagia decided two years ago to increase by 20 percent the government-provided pension paid to all Runagians over 65.  Inflation in the intervening period has been negligible,and the increase has been duly received by all eligible Runagians.  Nevertheless,many of them are no better off financially than they were before the increase, in large part because ________.

选项:

A、They rely entirely on the government pension for their income
B、Runagian banks are so inefficient that it can take up to three weeks to cash a pension check
C、They buy goods whose prices tend to rise especially fast in times of inflation
D、The pension was increased when the number of elderly Runagians below the poverty level reached an all-time high
E、In Runagia children typically supplement the income of elderly parents, but only by enough to provide them with a comfortable living 

答案:

E
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[Critical Reasoning]

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题目：

Brochure:  Help conserve our city's water supply.  By converting the landscaping in your yard to a water-conserving landscape, you can greatly reduce your outdoor water use.  A water-conserving landscape is natural and attractive, and it also saves you money.
 
Criticism:  For most people with yards, the savings from converting to a water-conserving landscape cannot justify the expense of new landscaping, since typically the conversion would save less than twenty dollars on a homeowner's yearly water bills.
 
Which of the following, if true, provides the best basis for a rebuttal of the criticism?

选项:

A、Even homeowners whose yards do not have water-conserving landscapes can conserve water by installing water-saving devices in their homes.
B、A conventional landscape generally requires a much greater expenditure on fertilizer and herbicide than does a water-conserving landscape.
C、A significant proportion of the residents of the city live in buildings that do not have yards.
D、It costs no more to put in water-conserving landscaping than it does to put in conventional landscaping.
E、Some homeowners use more water to maintain their yards than they use for all other purposes combined.

答案:

B
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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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[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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2701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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[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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[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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