问答

1答疑

[Data Sufficiency]

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题目：

Guy's net income equals his gross income minus his deductions.  By what percent did Guy's net income change on January 1, 1989, when both his gross income and his deductions increased?
(1)       Guy's gross income increased by 4 percent on January 1, 1989.
(2)       Guy's deductions increased by 15 percent on January 1, 1989.

选项:

答案:

E
1答疑

[Problem Solving]

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题目：

If $2,000 in a savings account earned the equivalent of 8½ percent simple annual interest, how much interest did the amount earn in one year?

选项:

A、$160
B、$170
C、$180
D、$240
E、$260

答案:

B
1答疑

[Critical Reasoning]

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题目：

Certain genetically modified strains of maize produce a powerful natural insecticide. The insecticide occurs throughout the plant, including its pollen. Maize pollen is dispersed by the wind and frequently blows onto milkweed plants that grow near maize fields. Caterpillars of monarch butterflies feed exclusively on milkweed leaves. When these caterpillars are fed milkweed leaves dusted with pollen from modified maize plants, they die. Therefore, by using genetically modified maize, farmers put monarch butterflies at risk.

Which of the following would it be most useful to determine in order to evaluate the argument?

选项:

A、Whether the natural insecticide is as effective against maize-eating insects as commercial insecticides typically used on maize are
B、Whether the pollen of genetically modified maize contains as much insecticide as other parts of these plants
C、Whether monarch butterfly caterpillars are actively feeding during the part of the growing season when maize is releasing pollen
D、Whether insects that feed on genetically modified maize plants are likely to be killed by insecticide from the plant’s pollen
E、Whether any maize-eating insects compete with monarch caterpillars for the leaves of milkweed plants growing near maize fields

答案:

C
1答疑

[Reading Comprehension]

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文章：

Line         Two works published in 1984 demonstrate
  contrasting approaches to writing the history of
  United States women. Buel and Buel’s biography
  of Mary Fish (1736–1818) makes little effort to
(5) place her story in the context of recent
  historiography on women. Lebsock, meanwhile,
  attempts not only to write the history of women in
  one southern community, but also to redirect two
  decades of historiographical debate as to
(10) whether women gained or lost status in the
  nineteenth century as compared with the
  eighteenth century. Although both books offer the
  reader the opportunity to assess this controversy
  regarding women’s status, only Lebsock’s deals with
(15) it directly. She examines several different aspects
  of women’s status, helping to refine and resolve the
  issues. She concludes that while
  women gained autonomy in some areas,
  especially in the private sphere, they lost it in
(20) many aspects of the economic sphere. More
  importantly, she shows that the debate itself
  depends on frame of reference: in many respects,
  women lost power in relation to men, for example,
  as certain jobs (delivering babies, supervising
(25) schools) were taken over by men. Yet women also
  gained power in comparison with their previous
  status, owning a higher proportion of real estate,
  for example. In contrast, Buel and Buel’s
  biography provides ample raw material for
(30) questioning the myth, fostered by some
  historians, of a colonial golden age in the
  eighteenth century but does not give the reader
  much guidance in analyzing the controversy over
  women’s status.


题目：

The passage suggests that Buel and Buel’s biography of Mary Fish provides evidence for which of the following views of women’s history?

选项:

A、Women have lost power in relation to men since the colonial era.
B、Women of the colonial era were not as likely to be concerned with their status as were women in the nineteenth century.
C、The colonial era was not as favorable for women as some historians have believed.
D、Women had more economic autonomy in the colonial era than in the nineteenth century.
E、Women’s occupations were generally more respected in the colonial era than in the nineteenth century.

答案:

C
1答疑

[Problem Solving]

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题目：

A manufacturer of a certain product can expect that between 0.3 percent and 0.5 percent of the units manufactured will be defective. If the retail price is $2,500 per unit and the manufacturer offers a full refund for defective units, how much money can the manufacturer expect to need to cover the refunds on 20,000 units?

选项:

A、Between $15,000 and $25,000
B、Between $30,000 and $50,000
C、Between $60,000 and $100,000
D、Between $150,000 and $250,000
E、Between $300,000 and $500,000

答案:

D
1答疑

[Reading Comprehension]

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文章：

Line         In Winters v. United States (1908), the Supreme
  Court held that the right to use waters flowing through
  or adjacent to the Fort Belknap Indian Reservation
  was reserved to American Indians by the treaty
(5) establishing the reservation. Although this treaty did
  not mention water rights, the Court ruled that the
  federal government, when it created the reservation,
  intended to deal fairly with American Indians by
  reserving for them the waters without which their
(10) lands would have been useless. Later decisions, citing
  Winters, established that courts can find federal rights
  to reserve water for particular purposes if (1) the
  land in question lies within an enclave under exclusive
  federal jurisdiction, (2) the land has been formally
(15) withdrawn from federal public lands—i.e., withdrawn
  from the stock of federal lands available for private
  use under federal land use laws—and set aside
  or reserved, and (3) the circumstances reveal the
  government intended to reserve water as well as land
(20) when establishing the reservation.
       Some American Indian tribes have also established
  water rights through the courts based on their
  traditional diversion and use of certain waters prior
  to the United States’ acquisition of sovereignty. For
(25) example, the Rio Grande pueblos already existed
  when the United States acquired sovereignty over
  New Mexico in 1848. Although they at that time
  became part of the United States, the pueblo lands
  never formally constituted a part of federal public
(30) lands; in any event, no treaty, statute, or executive
  order has ever designated or withdrawn the pueblos
  from public lands as American Indian reservations.
  This fact, however, has not barred application of the
  Winters doctrine. What constitutes an American Indian
(35) reservation is a question of practice, not of legal
  definition, and the pueblos have always been treated
  as reservations by the United States. This pragmatic
  approach is buttressed by Arizona v. California (1963),
  wherein the Supreme Court indicated that the manner
(40) in which any type of federal reservation is created
  does not affect the application to it of the Winters
  doctrine. Therefore, the reserved water rights of
  Pueblo Indians have priority over other citizens’ water
  rights as of 1848, the year in which pueblos must be
(45) considered to have become reservations.


题目：

Which of the following most accurately summarizes the relationship between Arizona v. California in lines 38–42, and the criteria citing the Winters doctrine in lines 10–20 ?

选项:

A、Arizona v. California abolishes these criteria and establishes a competing set of criteria for applying the Winters doctrine.
B、Arizona v. California establishes that the Winters doctrine applies to a broader range of situations than those defined by these criteria.
C、Arizona v. California represents the sole example of an exception to the criteria as they were set forth in the Winters doctrine.
D、Arizona v. California does not refer to the Winters doctrine to justify water rights, whereas these criteria do rely on the Winters doctrine.
E、Arizona v. California applies the criteria derived from the Winters doctrine only to federal lands other than American Indian reservations.

答案:

B
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[Problem Solving]

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题目：

A case contains c cartons. Each carton contains b boxes, and each box contains 100 paper clips. How many paper clips are contained in 2 cases?

选项:

A、
B、
C、
D、
E、

答案:

C
1答疑

[Critical Reasoning]

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题目：

The symptoms that United States President Zachary Taylor began showing five days before his death are consistent with arsenic poisoning.  Recent examination of Taylor's bones, however, revealed levels of arsenic comparable to those found in the bones of Taylor's contemporaries.  These levels are much lower than the levels of arsenic that remain in the bones of arsenic poisoning victims who live for more than a day after ingesting a lethal dose of the poison.
Which of the following is most strongly supported by the statements given?

选项:

A、The symptoms that Taylor began showing five days before his death are consistent with poisoning other than arsenic poisoning.
B、Taylor's death was not the result of any kind of poisoning.
C、The symptoms that Taylor began showing five days before his death were not caused by a lethal dose of arsenic.
D、The symptoms that Taylor began showing five days before his death grew more severe each day.
E、It is unusual for a person who has ingested a lethal dose of arsenic to survive for more than a day.

答案:

C
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[Problem Solving]

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题目：

In Country C, the unemployment rate among construction workers dropped from 16 percent on September 1, 1992, to 9 percent on September 1, 1996. If the number of construction workers was 20 percent greater on September 1, 1996, than on September 1, 1992, what was the approximate percent change in the number of unemployed construction workers over this period?

选项:

A、50% decrease
B、30% decrease
C、15% decrease
D、30% increase
E、55% increase

答案:

B
1答疑

[Sentence Correction]

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题目：

For many revisionist historians, Christopher Columbus has come to Personify devastation and enslavement in the name of progress that Has decimated native peoples of the Western Hemisphere.

选项:

A、devastation and enslavement in the name of progress that has decimated native peoples of the Western Hemisphere
B、devastation and enslavement in the name of progress by which native peoples of the Western Hemisphere have been decimated
C、devastating and enslaving in the name of progress those native peoples of the Western Hemisphere that have been decimated
D、devastating and enslaving those native peoples of the Western hemisphere which in the name of progress are decimated.
E、the devastation and enslavement in the name of progress that have decimated the native peoples of the Western Hemisphere.

答案:

E
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1935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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5028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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5711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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1916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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4138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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2903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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1919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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2005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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427613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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434751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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