问答

1答疑

[Sentence Correction]

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题目：

Neither a rising standard of living nor balanced trade, by itself, establishes a country's ability to compete in the international marketplace.  Both are required simultaneously since standards of living can rise because of growing trade deficits and trade can be balanced by means of a decline in a country's standard of living.
If the facts stated in the passage above are true, a proper test of a country's ability to be competitive is its ability to

选项:

A、balance its trade while its standard of living rises
B、balance its trade while its standard of living falls
C、increase trade deficits while its standard of living rises
D、decrease trade deficits while its standard of living falls
E、keep its standard of living constant while trade deficits rise

答案:

A
1答疑

[Reading Comprehension]

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文章：

Line        The argument for “monetizing”—or putting a
 monetary value on—ecosystem functions may be
 stated thus: Concern about the depletion of natural
 resources is widespread, but this concern, in the
(5)absence of an economic argument for conservation,
 has not translated into significant conservational
 progress. Some critics blame this impasse on
 environmentalists, whom they believe fail to address
 the economic issues of environmental degradation.
(10)Conservation can appear unprofitable when compared
 with the economic returns derived from converting
 natural assets (pristine coastlines, for example) into
 explicitly commercial ones (such as resort hotels).
 But according to David Pearce, that illusion stems
(15)from the fact that “services” provided by ecological
 systems are not traded on the commodities market,
 and thus have no readily quantifiable value. To
 remedy this, says Pearce, one has to show that all
 ecosystems have economic value—indeed, that all
(20)ecological services are economic services. Tourists
 visiting wildlife preserves, for example, create
 jobs and generate income for national economies;
 undisturbed forests and wetlands regulate water
 runoff and act as water-purifying systems, saving
(25)millions of dollars worth of damage to property
 and to marine ecosystems. In Gretchen Daily’s
 view, monetization, while unpopular with many
 environmentalists, reflects the dominant role that
 economic considerations play in human behavior,
(30)and the expression of economic value in a common
 currency helps inform environmental decision-making
 processes.


题目：

Which of the following most clearly represents an example of an “ecological service” as that term is used in line 20?

选项:

A、Being that she was secretary of labor, Frances Perkins' considerable influence with Franklin D. Roosevelt was used preventing
B、As secretary of labor, Frances Perkins' considerable influence with Franklin D. Roosevelt was used to prevent
C、Being secretary of labor, Frances Perkins' considerable influence with Franklin D. Roosevelt was used preventing
D、As secretary of labor, Frances Perkins used her considerable influence with Franklin D. Roosevelt to prevent
E、Secretary of labor, Frances Perkins' considerable influence was used with Franklin D. Roosevelt preventing

答案:

C
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[Problem Solving]

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题目：

A border of uniform width is placed around a rectangular photograph that measures 8 inches by 10 inches. If the area of the border is 144 square inches, what is the width of the border, in inches?

选项:

A、3
B、4
C、6
D、8
E、9

答案:

A
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[Sentence Correction]

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题目：

One automobile manufacturer has announced plans to increase the average fuel efficiency of its sport utility vehicles by 25 percent over the next five years, amounting to roughly five miles per gallon, and representing the first significant change in the fuel efficiency of any class of passenger vehicle in almost two decades.
 

选项:

A、 amounting to roughly five miles per gallon, and representing
B、 amounting to roughly five miles per gallon, and it would represent
C、 an increase that would amount to roughly five miles per gallon and it would represent
D、 an increase that would amount to roughly five miles per gallon and would represent
E、 which is an increase amounting to roughly five miles per gallon, representing

答案:

D
1答疑

[Data Sufficiency]

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题目：

If r, s, and w are positive numbers such that w = 60r + 80s and r + s = 1, is w < 70?
(1)     r > 0.5
(2)     r > s

选项:

答案:

D
1答疑

[Reading Comprehension]

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文章：

题目：

With which of the following characterizations of Lebsock's contribution to the controversy concerning women's status in the nineteenth-century United States would the author of the passage be most likely to agree?

选项:

A、Lebsock has studied women from a formerly neglected region and time period.
B、Lebsock has demonstrated the importance of frame of reference in answering questions about women's status.
C、Lebsock has addressed the controversy by using women's current status as a frame of reference.
D、Lebsock has analyzed statistics about occupations and property that were previously ignored.
E、Lebsock has applied recent historiographical methods to the biography of a nineteenth-century woman.

答案:

B
1答疑

[Graphics Interpretation]

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题目：

The flowchart represents a mathematical algorithm that takes two positive integers as the input and returns a positive integer as the output. Processes are indicated in the rectangular symbols in the flowchart. Each process is symbolized by an equation, such as T = T +a. In this particular process, the current values of the variables T and a are added together and the sum then becomes the value of T. For example, if the value ofT is 3 and the value of a is 7 before the process T = T +ais completed, then the value of T is 10 and the value of a is 7 after the process is completed.
Use the drop-down menus to fill in the blanks in the following statements based on the algorithm represented by the flowchart.

选项:

If 24 and 35 are entered as the values for a and b, respectively, then the first nonzero value of T is

If 35 and 27 are entered as the values for a and b, respectively, then after the process b =b/2is completed for the second time, the value of b is

答案:

A B
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[Problem Solving]

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题目：

The number of defects in the first five cars to come through a new production line are 9, 7, 10, 4, and 6, respectively. If the sixth car through the production line has either 3, 7, or 12 defects, for which of theses values does the mean number of defects per car for the first six cars equal the median?
 
 
I.     3
II.    7
III.   12

选项:

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

答案:

D
1答疑

[Data Sufficiency]

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题目：

For each positive integer n , the integeris defined by. What is the value of the positive integer k  ?
(1)   When k  is divided by 4, the remainder is 1.
(2)  

选项:

答案:

B
1答疑

[Critical Reasoning]

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题目：

Maize contains the vitamin niacin, but not in a form the body can absorb. Pellagra is a disease that results from niacin deficiency. When maize was introduced into southern Europe from the Americas in the eighteenth century, it quickly became a dietary staple, and many Europeans who came to subsist primarily on maize developed pellagra. Pellagra was virtually unknown at that time in the Americas, however, even among people who subsisted primarily on maize.

Which of the following, if true, most helps to explain the contrasting incidence of pellagra described above?

选项:

A、Once introduced into southern Europe, maize became popular with landowners because of its high yields relative to other cereal crops.
B、Maize grown in the Americas contained more niacin than maize grown in Europe did.
C、Traditional ways of preparing maize in the Americas convert maize's niacin into a nutritionally useful form.
D、In southern Europe many of the people who consumed maize also ate niacin-rich foods.
E、Before the discovery of pellagra's link with niacin, it was widely believed that the disease was an infection that could be transmitted from person to person.

答案:

C
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1141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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3251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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3602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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1195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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2746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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1887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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[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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1272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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301914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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309041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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