问答

3答疑

[Sentence Correction]

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题目：

The yield of natural gas from Norway's Troll gas field is expected to increase annually until the year2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for 50 years' production.

选项:

A、2005 and then to stabilize at six billion cubic feet a day, which will allow such an extraction rate at least for2005 and then to stabilize at six billion cubic feet a day, an extraction rate that will allow at least
B、2005 and then stabilizing at six billion cubic feet a day, with such an extraction rate at the least allowing
C、2005, then stabilizing at six billion cubic feet a day, allowing such an extraction rate for at least
D、2005, then stabilizing at six billion cubic feet a day, which will allow such an extraction rate for at least

答案:

B
3答疑

[Critical Reasoning]

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题目：

Which of the following most logically completes the argument below?

Using broad-spectrum weed killers on weeds that are competing with crops for sunlight, water, and nutrients presents a difficulty: how to keep the crop from being killed along with the weeds. For at least some food crops, specially treated seed that produces plants resistant to weed killers is under development. This resistance wears off as the plants mature. Therefore, the special seed treatment will be especially useful for plants that ________.

选项:

A、produce their crop over an extended period of time, as summer squash does
B、produce large seeds that are easy to treat individually, as corn and beans do
C、provide, as they approach maturity, shade dense enough to keep weeds from growing
D、are typically grown in large tracts devoted to a single crop
E、are cultivated specifically for the seed they produce rather than for their leaves or roots

答案:

C
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[Sentence Correction]

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题目：

Shrinking faster than any other nation's, the projected decline of Japan's population is 17 percent during the next half century.

选项:

A、 Shrinking faster than any other nation's, the projected decline of Japan's population is
B、 Shrinking faster than any other nation, Japan's population has a projected decline of
C、 The population of Japan is shrinking faster than that of any other nation and is projected to decline by
D、 The Japanese population is shrinking faster than any other nation, and it has a projected decline at
E、 Japan's population is shrinking faster than that of any other nation, with a projected decline at

答案:

C
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题目：

In 1995 Richard Stallman, a well-known critic of the patent system, testified in Patent Office hearings that, to test the system, a colleague of his had managed to win a patent for one of Kirchhoff’s laws, an observation about electric current first made in 1845 and now included in virtually every textbook of elementary physics.

选项:

A、laws, an observation about electric current first made in 1845 and
B、laws, which was an observation about electric current first made in 1845 and it is
C、laws, namely, it was an observation about electric current first made in 1845 and
D、laws, an observation about electric current first made in 1845, it is
E、laws that was an observation about electric current, first made in 1845, and is

答案:

A
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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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[Problem Solving]

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题目：

An equilateral triangle that has an area of 9 3^1/2 is inscribed in a circle. What is the area of the circle?

选项:

A、6pi
B、9pi
C、12 pi
D、9pi 3^1/2
E、18pi 3^1/2

答案:

C
3答疑

[Data Sufficiency]

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题目：

If n is an integer and , what is the value of x ?
(1) x is an integer.
(2)  

选项:

答案:

E
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[Critical Reasoning]

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题目：

People who have spent a lot of time in contact with animals often develop animal-induced allergies, a significant percentage of which are quite serious.  In a survey of current employees in major zoos, about 30 percent had animal-induced allergies.  However, a zoo employee who develops a serious animal-induced allergy is very likely to switch to some other occupation.
 
Which of the following hypotheses receives the strongest support from the information given?

选项:

A、The incidence of serious animal-induced allergies among current zoo employees is lower than that among the general population.
B、Zoo employees tend to develop animal-induced allergies that are more serious than those of other people who spend equally large amounts of time with animals.
C、Exposure to domestic pets is, on the whole, less likely to cause animal-induced allergy than is exposure to the kinds of animals that are kept in zoos.
D、There is no occupation for which the risk of developing an animal-induced allergy is higher than 30 percent.
E、Among members of the general population who have spent as much time with animals as zoo employees typically have, the percentage with animal-induced allergies is significantly more than 30 percent.

答案:

E
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[Problem Solving]

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题目：

For a certain race, 3 teams were allowed to enter 3 members each. A team earned points whenever one of its members finished in nth place, where .  There were no ties, disqualifications, or withdrawals.  If no team earned more than 6 points, what is the least possible score a team could have earned?

选项:

A、1
B、2
C、3
D、4

答案:

D
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[Data Sufficiency]

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题目：

If p, s, and t are positive, is |ps – pt| > p(s – t) ?
  1. p < s
  2. s < t

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 statements (1) and (2) 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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569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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1711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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1915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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719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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1627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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1145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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769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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785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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180845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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187959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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