问答

1答疑

[Data Sufficiency]

试题详情

题目:

If (y+3)(y-1) – (y-2)(y-1) = r(y-1), what is the value of y?
(1) r2 = 25
(2)   r = 5

选项:

答案:

E
1答疑

[Problem Solving]

试题详情

题目:

If 2x + y = –31, what is the value of x?
(1) (y − 2) × (y − 2) − 4 = 0
(2) y = 2

选项:

A、A. if statement (1) ALONE is sufficient to answer the question but statement (2) alone is not sufficient;
B、B. if statement (2) ALONE is sufficient to answer the question but statement (1) alone is not sufficient;
C、C. if the two statements TAKEN TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient;
D、D. if EACH statement ALONE is sufficient to answer the question;
E、E. if the two statements TAKEN TOGETHER are still NOT sufficient to answer the question.

答案:

B
1答疑

[Sentence Correction]

试题详情

题目:

Until recently, the Inuit people led a nomadic existence, sheltering in
igloos, the ice-block domes that are peculiar to north-central Canada,
and in structures made of stones, bones, driftwood, and skins.

选项:

A、Until recently, the Inuit people led a nomadic existence, sheltering
B、During recent times, the Inuit people lead a nomadic existence, sheltering.
C、In the times that are recent, the Inuit people led a nomadic existence, sheltered.
D、Up until recently, the Inuit people, leading a nomadic existence, have sheltered.
E、Until recent time, leading a nomadic existence, the Inuit people were sheltered.

答案:

A
1答疑

[Data Sufficiency]

试题详情

题目:

Is x< 0?
(1) -2x> 0
(2) x3 < 0

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 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:

D
1答疑

[Problem Solving]

试题详情

题目:

A certain list consists of 21 different numbers.  If n is in the list and n is 4 times the average (arithmetic mean) of the other 20 numbers in the list, then n is what fraction of the sum of the 21 numbers in the list?

选项:

A、
B、
C、
D、
E、

答案:

B
1答疑

[Reading Comprehension]

试题详情

文章:

题目:

The information in the passage suggests that which of the following statements from hypothetical sociological studies of change in industry most clearly exemplifies the social constructivists' version of technological determinism?

选项:

A、It is the available technology that determines workers' skills, rather than workers' skills influencing the application of technology.
B、All progress in industrial technology grows out of a continuing negotiation between technological possibility and human need.
C、Some organizational change is caused by people; some is caused by computer chips.
D、Most major technological advances in industry have been generated through research and development.
E、Some industrial technology eliminates jobs, but educated workers can create whole new skills areas by the adaptation of the technology.

答案:

A
1答疑

[Critical Reasoning]

试题详情

题目:

Jay: Of course there are many good reasons to support the expansion of preventive medical care, but arguments claiming that it will lead to greater societal economic gains are misguided. Some of the greatest societal expenses arise from frequent urgent-care needs for people who have attained a long life due to preventive care.

Sunil: Your argument fails because you neglect economic gains outside the health care system: society suffers an economic loss when any of its productive members suffer preventable illnesses.

Sunil's response to Jay makes which of the following assumptions?

选项:

A、
A. Those who receive preventive care are not more likely to need urgent care than are those who do not receive preventive care.
B、
B. Jay intends the phrase “economic gains” to refer only to gains accruing to institutions within the health care system.
C、
C. Productive members of society are more likely than others to suffer preventable illnesses.
D、
D. The economic contributions of those who receive preventive medical care may outweigh the economic losses caused by preventive care.
E、
E. Jay is incorrect in stating that patients who receive preventive medical care are long-lived.

答案:

D
1答疑

[Reading Comprehension]

试题详情

文章:

In a new book about the antiparty feeling of the early political leaders of the United States, Ralph Ketch am argues that the first six Presidents differed decisively from later Presidents because the first six held values inherited from the classical humanist tradition of eighteenth-century England. In this view, government was designed not to satisfy the private desires of the people but to make them better citizens; this tradition stressed the disinterested devotion of political leaders to the public good. Justice, wisdom, and courage were more important qualities in a leader than the ability to organize voters and win elections. Indeed, leaders were supposed to be called to office rather than to run for office. And if they took up the burdens of public office with a sense of duty, leaders also believed that such offices were naturally their due because of their social preeminence or their contributions to the country. Given this classical conception of leadership, it is not surprising that the first six Presidents condemned political parties. Parties were partial by definition, self-interested, and therefore serving something other than the transcendent public good.


Even during the first presidency (Washington's), however, the classical conception of virtuous leadership was being undermined by commercial forces that had been gathering since at least the beginning of the eighteenth century. Commerce—its profit-making, its self-interestedness, its individualism—became the enemy of these classical ideals. Although Ketch am does not picture the struggle in quite this way, he does rightly see Jackson's tenure (the seventh presidency) as the culmination of the acceptance of party, commerce, and individualism. For the Jacksonians, nonpartisanship lost its relevance, and under the direction of Van Buren, party gained a new legitimacy. The classical ideals of the first six Presidents became identified with a privileged aristocracy, an aristocrat that had to be overcome in order to allow competition between opposing political interests. Ketcham is so strongly committed to justifying the classical ideals, however, that he underestimates the advantages of their decline. For example, the classical conception of leadership was incompatible with our modem notion of the freedoms of speech and press, freedoms intimately associated with the legitimacy of opposing political patties.

题目:

Which of the following best describes the attitude of the first six Presidents toward political parties as it is discussed in the passage?

选项:

A、Political parties were essential to the notions of democracy on which the United States government was based. 
B、Personal character in leadership was as important as affiliation with a political party. 
C、Political parties were one way to ensure that government could meet the needs of all citizens. 
D、Political parties, though undesirable, were inevitable in a democratic political system. 
E、Political parties represented opposing political interests rather than the general public good.

答案:

E
1答疑

[Graphics Interpretation]

试题详情

题目:

For each of the years 2000, 2003, 2006, and 2009, the graph shows the carbon dioxide emissions produced by the consumption of petroleum for 9 countries. Emissions are measured in millions of metric tons of carbon dioxide, where 1 million= 10^6



From each drop-down menu, select the option that creates the most accurate statement based on the information provided.

选项:

Median carbon dioxide emissions for the 9 countries increased by million metric tons from 2000 to 2009.

In 2006, the range of carbon dioxide emissions for the 9 countries was approximately million metric tons.

答案:

A B
1答疑

[Data Sufficiency]

试题详情

题目:

Jack wants to use a circular rug on his rectangular office floor to cover two small circular stains, each less than square feet in area and each more than 3 feet from the nearest wall. Can the rug be placed to cover both stains?
  1. Jack’s rug covers an area of 9π square feet.
  2. The centers of the stains are less than 4 feet apart.

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 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:

C
0评分
1937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
5042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
5715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
1920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
4147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
2911浏览

[OG]

The primary purpose of the passage is to
为什么选E不选B
0评分
1922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
2011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
428049浏览

[Undefined]

Analytical!
请问may老师,这题该用什么思路来做?
0评分
435187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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