问答

1答疑

[Critical Reasoning]

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题目：

In a study conducted in Canada, servers in various restaurants wrote "Thank you" on randomly selected bills before presenting the bills to their customers. Tips on these bills were an average of three percentage points higher than bps on bills without the message. Therefore, if servers in Canada regularly wrote "Thank you" on restaurant bills, their average income from tips would be significantly higher than it otherwise would have been.
Which of the following is an assumption on which the argument relies?

选项:

A、The "Thank you" messages would have the same impact on regular patrons of a restaurant as they would on occasional patrons of the same restaurant. 
B、Regularly seeing "Thank you" written on their bills would not lead restaurant patrons to revert to their earlier tipping habits. 
C、The written "Thank you" reminds restaurant patrons that tips constitute a significant part of the income of many food servers. 
D、The rate at which people tip food servers in Canada does not vary with how expensive a restaurant is. 
E、Virtually al patrons of the Canadian restaurants in the study who were given a bill with "Thank you" written on it left a larger tip than they otherwise would have.

答案:

B
1答疑

[Problem Solving]

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题目：

选项:

A、Cub-carrying behavior has been observed in many non-myrmecophagous mammals.
B、Many of the largest myrmecophagous mammals do not typically exhibit cub-carrying behavior.
C、Some sloth bears have home ranges that are smaller in size than the average home ranges of black bears.
D、The locomotion of black bears is significantly more efficient than the locomotion of sloth bears.
E、The habitat of black bears consists of terrain that is significantly more varied than that of the habitat of sloth bears.

答案:

D
1答疑

[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:

答案:

D
1答疑

[Critical Reasoning]

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题目：

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 times that more are delivered?
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 general. 
B、The delivery of letters is the primary activity of the postal service. 
C、Productivity should be ascribed to categories of workers, not to individuals.
D、The quality of services rendered can appropriately be ignored in computing productivity. 
E、The number of letters delivered is relevant to measuring the productivity of postal workers.

答案:

D
1答疑

[Critical Reasoning]

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题目：

Many leadership theories have provided evidence that leaders affect group success rather than the success of particular individuals. So it is irrelevant to analyze the effects of supervisor traits on the attitudes of individuals whom they supervise. Instead, assessment of leadership effectiveness should occur only at the group level.

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

选项:

答案:

E
1答疑

[Problem Solving]

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题目：

What is the smallest integer n for which  ?

选项:

A、67
B、8
C、9
D、10

答案:

B
1答疑

[Sentence Correction]

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题目：

Like those of the African white and black rhinos, the Sumatran rhino has two horns, but the front one is generally less than a foot long and the second is so small that it often appears to be missing.

选项:

A、Like those of the African white and black rhinos
B、Similar to that of the African white and black rhinos
C、Like that of the African white and black rhinos
D、As with the African white and black rhinos'
E、 Like the African white and black rhinos

答案:

E
1答疑

[Data Sufficiency]

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题目：

Can a certain rectangular sheet of glass be positioned on a rectangular tabletop so that it covers the entire tabletop and its edges are parallel to the edges of the tabletop?
(1)   The tabletop is 36 inches wide by 60 inches long.
(2)   The area of one side of the sheet of glass is 2400 square inches.

选项:

答案:

E
1答疑

[Reading Comprehension]

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文章：

题目：

The passage suggests that Lebsock believes that compared to nineteenth-century American women, eighteenth-century American women were

选项:

A、in many respects less powerful in relation to men
B、more likely to own real estate
C、generally more economically independent
D、more independent in conducting their private lives
E、less likely to work as school superintendents

答案:

C
1答疑

[Critical Reasoning]

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文章：

Treatment for hypertension forestalls certain medical expenses by preventing strokes and heart disease.Yet any money so saved amounts to only one-fourth of the expenditures required to treat the hypertensive population.Therefore, there is no economic 1ustification for preventive treatment for hypertension.

题目：

Which of the following, if true, is most damaging to the conclusion above?

选项:

A、The many fatal strokes and heart attacks resulting from untreated hypertension cause insignificant medical expenditures but large economic losses of other sorts.The cost, per patient, of preventive treatment for hypertension would remain constant even if such treatment were instituted on a large scale.
B、In matters of health care.Economic considerations should ideally not be dominant. 
C、Effective prevention presupposes early diagnosis, and programs to ensure early diagnosis are costly.
D、The net savings in medical resources achieved by some preventive health measures are smaller than the net losses attributable to certain other measures of this kind.

答案:

A
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340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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1295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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1470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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569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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1320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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942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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631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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640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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151260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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158368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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