问答

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[Critical Reasoning]

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题目：

Since 1990 the percentage of bacterial sinus infections in Aqadestan that are resistant to the antibiotic perxicillin has increased substantially. Bacteria can quickly develop resistance to an antibiotic when it is prescribed indiscriminately or when patients fail to take it as prescribed. Since perxicillin has not been indiscriminately prescribed, health officials hypothesize that the increase in perxicillin-resistant sinus infections is largely due to patients' failure to take this medication as prescribed.

Which of the following, if true of Aqadestan, provides most support for the health officials' hypothesis?

选项:

A、
A. Resistance to several other commonly prescribed antibiotics has not increased since 1990 in Aqadestan.
B、
B. A large number of Aqadestanis never seek medical help when they have a sinus infection.
C、
C. When it first became available, perxicillin was much more effective in treating bacterial sinus infections than any other antibiotic used for such infections at the time.
D、
D. Many patients who take perxicillin experience severe side effects within the first few days of their prescribed regimen.
E、
E. Aqadestani health clinics provide antibiotics to their patients at cost.

答案:

D
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[Sentence Correction]

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题目：

With surface temperatures estimated at minus 230 degrees Fahrenheit, Jupiter's moon Europa has long been considered far too cold to support life, and with 60 square miles of water thought to be frozen from top to bottom.

选项:

A、Europa has long been considered far too cold to support life, and with
B、Europa has long been considered far too cold to support life, its
C、Europa has long been considered as far too cold to support life and has
D、Europa, long considered as far too cold to support life, and its
E、Europa, long considered to be far too cold to support life, and to have

答案:

B
2答疑

[Reading Comprehension]

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文章：

The United States hospital industry is an unusual market in that nonprofit and for-profit producers exist simultaneously.  Theoretical literature offers conflicting views on whether nonprofit hospitals are less financially efficient.  Theory suggests that nonprofit hospitals are so much more interested in offering high-quality service than in making money that they frequently input more resources to provide the same output of service as for-profit hospitals.  This priority might also often lead them to be less vigilant in streamlining their services--eliminating duplication between departments, for instance.  Conversely, while profit motive is thought to encourage for-profit hospitals to attain efficient production, most theorists admit that obstacles to that efficiency remain.  For-profit hospital managers, for example, generally work independently of hospital owners and thus may not always make maximum financial efficiency their highest priority.  The literature also suggests that widespread adoption of third-party payment systems may eventually eliminate any such potential differences between the two kinds of hospitals.
 
The same literature offers similarly conflicting views of the efficiency of nonprofit hospitals from a social welfare perspective. Newhouse (1970) contends that nonprofit hospital managers unnecessarily expand the quality and quantity of hospital care beyond the actual needs of the community, while Weisbrod (1975) argues that nonprofit firms--hospitals included--contribute efficiently to community welfare by providing public services that might be inadequately provided by government alone.

题目：

The passage suggests which of the following about the managers mentioned in the highlighted text?

选项:

A、They have generally been motivated to streamline hospital services as a result of direct intervention by hospital owners.
B、They are more likely than managers of nonprofit hospitals to use unnecessary amounts of resources to provide services.
C、Their most important self-acknowledged goal is to achieve maximum financial efficiency so that hospitals show a profit.
D、Their decisions regarding services provided by their hospitals may not reflect hospital owners' priorities.
E、They do not place a high priority on maximizing profits, despite their desire to achieve efficiency.

答案:

D
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[Reading Comprehension]

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文章：

题目：

Which of the following, if true, would most clearly support the argument about keystone status advanced in the last sentence of the passage (lines 24–31)?

选项:

A、A species of bat is primarily responsible for keeping insect populations within an ecosystem low, and the size of the insect population in turn affects bird species within that ecosystem.
B、A species of iguana occupies a keystone role on certain tropical islands, but does not play that role on adjacent tropical islands that are inhabited by a greater number of animal species.
C、Close observation of a savannah ecosystem reveals that more species occupy keystone roles within that ecosystem than biologists had previously believed.
D、As a keystone species of bee becomes more abundant, it has a larger effect on the ecosystem it inhabits.
E、A species of moth that occupies a keystone role in a prairie habitat develops coloration patterns that camouflage it from potential predators.

答案:

B
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[Sentence Correction]

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题目：

Nobody knows exactly how many languages there are in the world, partly because of the difficulty of distinguishing between a language and the sublanguages or dialects within it, but those who have tried to count typically have found about five thousand.

选项:

A、and the sublanguages or dialects within it, but those who have tried to count typically have found
B、and the sublanguages or dialects within them, with those who have tried counting typically finding
C、and the sublanguages or dialects within it, but those who have tried counting it typically find
D、or the sublanguages or dialects within them, but those who tried to count them typically found
E、or the sublanguages or dialects within them, with those who have tried to count typically finding

答案:

A
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[Reading Comprehension]

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文章：

    The fields of antebellum (pre-Civil War) political history and women's history use separate sources and focus on separate issues. Political historians, examining sources such as voting records, newspapers, and politicians' writings, focus on the emergence in the1840's of a new "American political nation," and since women were neither voters nor politicians, they receive little discussion. Women's historians, meanwhile, have shown little interest in the subject of party politics, instead drawing on personal papers, legal records such as wills, and records of female associations to illuminate women's domestic lives, their moral reform activities, and the emergence of the woman's rights movement.

    However, most historians have underestimated the extent and significance of women's political allegiance in the antebellum period. For example, in the presidential election campaigns of the 1840's, the Virginia Whig party strove to win the allegiance of Virginia's women by inviting them to rallies and speeches. According to Whig propaganda, women who turned out at the party's rallies gathered information that enabled them to mold party-loyal families, reminded men of moral values that transcended party loyalty, and conferred moral standing on the party. Virginia Democrats, in response, began to make similar appeals to women as well. By the mid-1850's the inclusion of women in the rituals of party politics had become common-place, and the ideology that justified such inclusion had been assimilated by the Democrats.

题目：

The author of the passage would be most likely to agree with which of the following statements regarding most historians of the antebellum period?

选项:

A、They have failed to adequately contrast the differing roles that women played in the Democratic and Whig parties in the 1850's.
B、They have failed to see that political propaganda advocating women's political involvement did not reflect the reality of women's actual roles.
C、They have incorrectly assumed that women's party loyalty played a small role in Whig and Democratic party politics.
D、They have misinterpreted descriptions of women's involvement in party politics in records of female associations and women's personal papers.
E、They have overlooked the role that women's political activities played in the woman's rights movement.

答案:

C
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[Sentence Correction]

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题目：

Those skeptical of the extent of global warming argue that short-term temperature data are an inadequate means of predicting long-term trends and point out that the scientific community remains divided on whether significant warming will occur and what impact will it have if it does.

选项:

A、on whether significant warming will occur and what impact will it have if it does
B、on whether warming that occurs will be significant and the impact it would have
C、as to whether significant warming will occur or the impact it would have if it did
D、over whether there will be significant warming or the impact it will have
E、over whether significant warming will occur and what impact it would have

答案:

E
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[Problem Solving]

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题目：

The graph above shows the combined revenue, in billions of dollars, of a chain of food stores for each year over a four-year period. In 1994 a certain store's revenue accounted for 2.0 percent of the combined revenue for that year, and in the 1995 the same store accounted for 2.3 percent of the combined revenue for that year. What was the approximate percent increase in revenue for this store from 1994 to 1995 ?

选项:

A、0.3%
B、15.0%
C、25.0%
D、30.4%
E、43.8%

答案:

E
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[Critical Reasoning]

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题目：

Although the earliest surviving Greek inscriptions written in an alphabet date from the eighth century B.C., a strong case can be made that the Greeks actually adopted alphabetic writing at least two centuries earlier.  Significantly, the text of these earliest surviving Greek inscriptions sometimes runs from right to left and sometimes from left to right.  Now, the Greeks learned alphabetic writing from the Phoenicians, and in the process they would surely have adopted whatever convention the Phoenicians were then using with respect to the direction of writing.  Originally, Phoenician writing ran in either direction, but by the eighth century B.C. it had been consistently written from right to left for about two centuries.
 
In the argument given, the two portions in boldface play which of the following roles?

选项:

A、The first is the position that the argument seeks to establish; the second reports a discovery that has been used to support a position that the argument opposes.
B、The first is the position that the argument seeks to establish; the second presents an assumption on which the argument relies.
C、The first presents evidence that is used in support of the position that the argument seeks to establish; the second presents an assumption on which the argument relies.
D、The first is an objection raised against a position that the argument opposes; the second is the position that the argument seeks to establish.
E、The first is an objection raised against a position that the argument opposes; the second is evidence that has been used to support that position.

答案:

B
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[Sentence Correction]

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题目：

In contrast to some fish eggs requiring months to incubate, the Rio Grande silvery minnow produces eggs that hatch in about 24 hours, yielding larvae that can swim in just three to four days.

选项:

A、 some fish eggs requiring months to incubate
B、 some fish, whose eggs require months to incubate
C、 some fish that have eggs requiring months to incubate
D、 the requirement of months of incubation for some fish eggs
E、 requiring months of incubation, as some fish eggs do

答案:

B
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792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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2412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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2641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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[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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2117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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[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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[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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[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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[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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