问答

1答疑

[Problem Solving]

试题详情

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
1答疑

[Sentence Correction]

试题详情

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]

试题详情

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]

试题详情

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

[Reading Comprehension]

试题详情

文章:

题目:

According to the passage, Lebsock's work differs from Buel and Buel's work in that Lebsock's work

选项:

A、uses a large number of primary sources
B、ignores issues of women's legal status
C、refuses to take a position on women's status in the eighteenth century
D、addresses larger historiographical issues
E、fails to provide sufficient material to support its claims

答案:

D
1答疑

[Reading Comprehension]

试题详情

文章:

题目:

The passage suggests that which of the following is a function likely to be performed by an oligosaccharin?

选项:

A、 To stimulate a particular plant cell to become part of a plant's root system
B、 To stimulate the walls of a particular cell to produce other oligosaccharins
C、 To activate enzymes that release specific chemical messengers from plant cell walls
D、 To duplicate the gene complement in a particular plant cell
E、 To produce multiple effects on a particular subsystem of plant cells

答案:

A
1答疑

[Critical Reasoning]

试题详情

文章:

Correctly measuring the productivity of service workers is complex. Consider, for example, postal workers: they are often said to be more productive if more letters are delivered per postal worker. But is this really true? What if more letters are lost or delayed per worker at the same time that more are delivered?

题目:

The objection implied above to the productivity measure described is based on doubts about the truth of which of the following statements?

选项:

A、Postal workers are representative of service workers in generalThe delivery of letters is the primary activity of the postal service. 
B、Productivity should be ascribed to categories of workers, not to individuals.
C、The quality of services rendered can appropriately be ignored in computing productivity.
D、The number of letters delivered is relevant to measuring the productivity of postal workers.

答案:

D
1答疑

[Reading Comprehension]

试题详情

文章:

The storms most studied by climatologists have been those that are most easily understood by taking atmospheric measurements.  Hurricanes and tornadoes, for example, are spatially confined, the forces that drive them are highly concentrated, and they have distinctive forms and readily quantifiable characteristics.  Consequently, data about them are abundant, and their behavior is relatively well understood, although still difficult to predict.
 
Hurricanes and tornadoes are also studied because they are highly destructive storms, and knowledge about their behavior can help minimize injury to people and property.  But other equally destructive storms have not been so thoroughly researched, perhaps because they are more difficult to study.  A primary example is the northeaster, a type of coastal storm that causes significant damage along the eastern coast of North America.  Northeasters, whose diffuse nature makes them difficult to categorize, are relatively weak low-pressure systems with winds that rarely acquire the strength of even the smallest hurricane.  Although northeasters are perceived to be less destructive than other storms, the high waves associated with strong northeasters can cause damage comparable to that of a hurricane, because they can affect stretches of coast more than 1,500 kilometers long, whereas hurricanes typically threaten a relatively small ribbon of coastline--roughly 100 to 150 kilometers.

题目:

Which of the following can be inferred from the passage about storms that lend themselves to atmospheric measurements?

选项:

A、They are more likely than other storms to be studied by climatologists.
B、They are likely to be less highly concentrated than are other storms.
C、They are likely to be more difficult to predict than are other storms.
D、They occur less frequently along the eastern coast of North America than in other areas.
E、They tend to affect larger areas than do other storms.

答案:

A
1答疑

[Data Sufficiency]

试题详情

题目:

If x and y are positive integers and y =$${sqrt{9-x}}$$ , what is the value of y?

(1) x <8

(2) y > 1

选项:

答案:

E
1答疑

[Problem Solving]

试题详情

题目:

On a recent trip, Cindy drove her car 290 miles, rounded to the nearest 10 miles, and used 12 gallons of gasoline, rounded to the nearest gallon. The actual number of miles per gallon that Cindy's car got on this trip must have been between

选项:

A、 and  and 
B、 and 
C、 and 
D、 and 

答案:

D
0评分
1145浏览

[Undefined]

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?
0评分
3267浏览

[Undefined]

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
0评分
3621浏览

[Undefined]

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
0评分
1202浏览

[Undefined]

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?
0评分
2755浏览

[GWD]

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
0评分
1897浏览

[OG]

The primary purpose of the passage is to
为什么选E不选B
0评分
1215浏览

[Undefined]

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
0评分
1276浏览

[Undefined]

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
303079浏览

[Undefined]

Analytical!
请问may老师,这题该用什么思路来做?
0评分
310206浏览

[Undefined]

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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