问答

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[Sentence Correction]

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题目：

Birds known as honeyguides exhibit a unique pattern of behavior:  the bird leads another animal, such as a honey-badger or a human, to a bees' nest with their chattering when they fly ahead; after the larger animal takes honey, the bird eats the wax and bee larvae.

选项:

A、with their chattering when they fly
B、with chattering and its flying
C、by chattering as it flies
D、by chattering and its flying
E、by chattering as they are flying

答案:

C
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[Critical Reasoning]

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题目：

The population of desert tortoises in Targland's Red Desert has declined, partly because they are captured for sale as pets and partly because people riding all-terrain vehicles have damaged their habitat.  Targland plans to halt this population decline by blocking the current access routes into the desert and announcing new regulations to allow access only on foot.  Targland's officials predict that these measures will be adequate, since it is difficult to collect the tortoises without a vehicle.
 
Which of the following would it be most important to establish in order to evaluate the officials' prediction?

选项:

A、Whether possessing the tortoises as pets remains legally permissible in Targland
B、Whether Targland is able to enforce the regulations with respect to all-terrain vehicle entry at points other than the current access routes
C、Whether the Red Desert tortoises are most active during the day or at night
D、Whether people who travel on foot in the Red Desert often encounter the tortoises
E、Whether the Targland authorities held public hearings before restricting entry by vehicle into the Red Desert

答案:

B
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[Reading Comprehension]

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文章：

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 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 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 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 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 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 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：

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

答案:

B
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[Problem Solving]

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题目：

Each signal that a certain ship can make is comprised of 3 different flags hanging vertically in a particular order.  How many unique signals can be made by using 4 different flags?

选项:

A、10
B、12
C、20
D、24
E、36

答案:

D
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[Critical Reasoning]

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题目：

A sudden increase in the production of elephant ivory artifacts on the Mediterranean coast of North Africa occurred in the tenth century.  Historians explain this increase as the result of an area opening up as a new source of ivory and argue on this basis that the important medieval trade between North Africa and East Africa began at this period.
 
Each of following, if true, provides some support for the historians' account described above EXCEPT:

选项:

A、In East Africa gold coins from Mediterranean North Africa have been found at a tenth-century site but at no earlier sites.
B、The many surviving letters of pre-tenth-century North African merchants include no mention of business transactions involving East Africa.
C、Excavations in East Africa reveal a tenth-century change in architectural style to reflect North African patterns.
D、Documents from Mediterranean Europe and North Africa that date back earlier than the tenth century show knowledge of East African animals.
E、East African carvings in a style characteristic of the tenth century depict seagoing vessels very different from those used by local sailors but of a type common in the Mediterranean.

答案:

D
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题目：

Before 1988, insurance companies in California were free to charge whatever rates the market would bear, needing no approval from regulators before raising rates.

选项:

A、needing no approval from regulators before raising
B、and it needed no approval by regulators before raising
C、and needing no approval from regulators before they raised
D、with approval not needed by regulators before they raised
E、with no approval needed from regulators before the raising of

答案:

A
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[Sentence Correction]

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题目：

Many of them chiseled from solid rock centuries ago, the mountainous regions of northern Ethiopia are dotted with hundreds of monasteries.

选项:

A、Many of them chiseled from solid rock centuries ago, the mountainous regions of northern Ethiopia are dotted with hundreds of monasteries.
B、Chiseled from solid rock centuries ago, the mountainous regions of northern Ethiopia are dotted with many hundreds of monasteries.
C、Hundreds of monasteries, many of them chiseled from solid rock centuries ago, are dotting the mountainous regions of northern Ethiopia.
D、The mountainous regions of northern Ethiopia are dotted with hundreds of monasteries, many of which are chiseled from solid rock centuries ago.
E、The mountainous regions of northern Ethiopia are dotted with hundreds of monasteries, many of them chiseled from solid rock centuries ago.

答案:

E
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[Problem Solving]

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题目：

Does x2 = ?
(1) yx3 = 1
(2) x2 + y2 = (x − y)2

选项:

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

答案:

A
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[Critical Reasoning]

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题目：

A product that represents a clear technological advance over competing products can generally command a high price.  Because technological advances tend to be quickly surpassed and companies want to make large profits while they still can, many companies charge the greatest price the market will bear when they have such a product.  But large profits on the new product will give competitors a strong incentive to quickly match the mew product's capabilities.  Consequently, the strategy to maximize overall profit from a new product is to charge less than the greatest possible price.
 
In the argument above, the two portions in boldface play which of the following roles?

选项:

A、The first is an assumption that forms the basis for a course of action that the argument criticizes; the second presents the course of action endorsed by the argument.
B、The first is a consideration raised to explain the appeal of a certain strategy; the second is a consideration raised to call into question the wisdom of adopting that strategy.
C、The first is an assumption that has been used to justify a certain strategy; the second is a consideration that is used to cast doubt on that assumption.
D、The first is a consideration raised in support of a strategy the argument endorses; the second presents grounds in support of that consideration.
E、The first is a consideration raised to show that adopting a certain strategy is unlikely to achieve the intended effect; the second is presented to explain the appeal of that strategy.

答案:

B
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[Reading Comprehension]

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文章：

Line         When Jamaican-born social activist Marcus
  Garvey came to the United States in 1916, he
  arrived at precisely the right historical moment.
  What made the moment right was the return of
(5) African American soldiers from the First World War
  in 1918, which created an ideal constituency for
  someone with Garvey’s message of unity, pride,
  and improved conditions for African American
  communities.
(10)      Hoping to participate in the traditional American
  ethos of individual success, many African American
  people entered the armed forces with enthusiasm,
  only to find themselves segregated from white
  troops and subjected to numerous indignities. They
(15) returned to a United States that was as segregated
  as it had been before the war. Considering similar
  experiences, anthropologist Anthony F. C. Wallace
  has argued that when a perceptible gap arises
  between a culture’s expectations and the reality of
(20) that culture, the resulting tension can inspire a
  revitalization movement: an organized, conscious
  effort to construct a culture that fulfills longstanding
  expectations.
       Some scholars have argued that Garvey created
(25) the consciousness from which he built, in the 1920s,
  the largest revitalization movement in
  African American history. But such an argument only
  tends to obscure the consciousness of
  identity, strength, and sense of history that already
(30) existed in the African American community. Garvey
  did not create this consciousness; rather, he gave
  this consciousness its political expression.


题目：

It can be inferred from the passage that the “scholars” mentioned in line 24 believe which of the following to be true?

选项:

A、Revitalization resulted from the political activism of returning African American soldiers following the First World War.
B、Marcus Garvey had to change a number of prevailing attitudes in order for his mass movement to find a foothold in the United States.
C、The prevailing sensibility of the African American community provided the foundation of Marcus Garvey’s political appeal.
D、Marcus Garvey hoped to revitalize consciousness of cultural and historical identity in the African American community.
E、The goal of the mass movement that Marcus Garvey helped bring into being was to build on the pride and unity among African Americans.

答案:

B
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[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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[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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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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[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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[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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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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Analytical!
请问may老师，这题该用什么思路来做？
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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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Analytical!
请问老师，这道题为什么second part是”evidence”? 还有、不确定First part到底是background info还是premise?
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