问答

3答疑

[Reading Comprehension]

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题目：

Which of the following can be inferred from the passage concerning the environmentalists mentioned in line 8?

选项:

A、They are organized in opposition to the generation of income produced by the sale of ecological services.
B、They are fewer in number but better organized and better connected to the media than their opponents.
C、They have sometimes been charged with failing to use a particular strategy in their pursuit of conservational goals.
D、They have been in the forefront of publicizing the extent of worldwide environmental degradation.
E、They define environmental progress differently and more conservatively than do other organized groups of environmentalists.

答案:

C
3答疑

[Data Sufficiency]

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题目：

A box contains 10 light bulbs, fewer than half of which are defective. Two bulbs are to be drawn simultaneously from the box.  If n of the bulbs in box are defective, what is the value of n?
(1)   The probability that the two bulbs to be drawn will be defective is 1/15.
(2) The probability that one of the bulbs to be drawn will be defective and the other will not be defective is 7/15.

选项:

答案:

D
3答疑

[Problem Solving]

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题目：

A certain business produced x rakes each month form November through February and shipped rakes at the beginning of each month from March through October.  The business paid no storage costs for the rakes from November through February, but it paid storage costs of $0.10 per rake each month from March through October for the rakes that had not been shipped.  In terms of x, what was the total storage cost, in dollars, that the business paid for the rakes for the 12 months form November through October?

选项:

A、0.40x
B、1.20x
C、1.40x
D、1.60x
E、3.20x

答案:

C
3答疑

[Data Sufficiency]

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题目：

One kilogram of a certain coffee blend consists of x kilogram of type I coffee and y kilogram of type II coffee.  The cost of the blend is C dollars per kilogram, where C = 6.5x + 8.5y.  Is x0.8?
(1)     y0.15
(2)     C  7.30

选项:

答案:

B
3答疑

[Sentence Correction]

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题目：

Caribou are wary animals with excellent hearing, so stalking them over the treeless landscape, getting close enough to kill it with nothing but a handheld lance, as Dorset people did, required exceptional hunting skill.

选项:

A、so stalking them over the treeless landscape, getting close enough to kill it
B、so to stalk them over the treeless landscape and get close enough to kill one
C、so in order to stalk them over the treeless landscape and get close enough to kill one
D、and so in order to stalk it over the treeless landscape, getting close enough to kill it
E、and so stalking them over the treeless landscape and getting close enough in order to kill it

答案:

B
3答疑

[Sentence Correction]

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题目：

Defying efforts by polio makers on both sides of the Atlantic at restraining it, the United States dollar, continuing its rise, reaching its highest level in six years against the German mark.

选项:

A、at restraining it, the United States dollar, continuing its rise, reaching
B、at restraining it, the rise of the United States dollar continued, to reach 
C、at restraining it, the United States dollar continued rising, and it reached 
D、to restrain it, the United States dollar continued its rise, reaching 
E、to restrain it, the United States dollar is continuing its rise, and to reach

答案:

D
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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[Sentence Correction]

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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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1284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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3631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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4008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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1333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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2989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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2073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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1331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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1400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
0评分
330514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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337640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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