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题目：

If -74 is written as an integer in base 10 notation, what is the sum of the digits in that integer?

选项:

A、424
B、433
C、440
D、449
E、467

答案:

C
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题目：

Ecologist:  The Scottish Highlands were once the site of extensive forests, but these forests have mostly disappeared and been replaced by peat bogs.  The common view is that the Highlands' deforestation was caused by human activity, especially agriculture. However, agriculture began in the Highlands less than 2,000 years ago.  Peat bogs, which consist of compressed decayed vegetable matter, build up by only about one foot per 1,000 years and, throughout the Highlands, remains of trees in peat bogs are almost all at depths great than four feet.  Since climate changes that occurred between 7,000 and 4,000 years ago favored the development of peat bogs rather than the survival of forests, the deforestation was more likely the result of natural processes than of human activity.
 
In the ecologist's argument the two portions in boldface play which of the following roles?

选项:

A、The first is evidence that has been used in support of a position that the ecologist rejects; the second is a finding that the ecologist uses to counter that evidence.
B、The first is evidence that, in light of the evidence provided in the second, serves as grounds for the ecologist's rejection of a certain position.
C、The first is a position that the ecologist rejects; the second is evidence that has been used in support of that position.
D、The first is a position that the ecologist rejects; the second provides evidence in support of that rejection.
E、The first is a position for which the ecologist argues; the second provides evidence to support that position.

答案:

B
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题目：

Scientists typically do their most creative work before the age of forty.  It is commonly thought that this happens because aging by itself brings about a loss of creative capacity.  However, studies show that a disproportionately large number of the scientists who produce highly creative work beyond the age of forty entered their field at an older age than is usual.  Since by the age of forty the large majority of scientists have been working in their field for at least fifteen years, the studies' finding strongly suggests that the real reason why scientists over forty rarely produce highly creative work is not that they have simply aged but rather that they generally have spent too long in a given field.
 
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 as a whole opposes; the second is an objection that has been raised against a position defended in the argument.
B、The first is a claim that has been advanced in support of a position that the argument opposes; the second is a finding that has been used in support of that position.
C、The first is an explanation that the argument challenges; the second is a finding that has been used in support of that explanation.
D、The first is an explanation that the argument challenges; the second is a finding on which that challenge is based.
E、The first is an explanation that the argument defends; the second is a finding that has been used to challenge that explanation.

答案:

D
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题目：

Often patients with ankle fractures that are stable, and thus do not require surgery, are given follow-up x-rays because their orthopedists are concerned about possibly having misjudged the stability of the frac- ture. When a number of follow-up x-rays were reviewed, however, all
the fractures that had initially been judged stable were found to have healed correctly. Therefore, it is a waste of money to order follow-up
x-rays of ankle fracture initially judged stable.
 
Which of the following, if true, most strengthens the argument?

选项:

A、Doctors who are general practitioners rather than orthopedists are less likely than orthopedists to judge the stability of an ankle frac-ture correctly.
B、Many ankle injuries for which an initial x-ray is ordered are revealed by the x-ray not to involve any fracture of the ankle.
C、X-rays of patients of many different orthopedists working in several hospitals were reviewed.
D、The healing of ankle fractures that have been surgically repaired is always checked by means of a follow-up x-ray.
E、Orthopedists routinely order follow-up x-rays for fractures of bone other than ankle bones.

答案:

C
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题目：

Even though her career was cut short when she was in her prime and the fifteen recordings she made were disappointing artistically as well as technically, Olive Fremstad (1871-1951) has never been entirely forgotten by opera aficionados.

选项:

A、though her career was cut short when she was in her prime and the fifteen recordings she made were
B、though her career was cut short while in her prime, with the fifteen recordings she made
C、as her career had been cut short when she was in her prime, with the fifteen recordings she had made
D、with her career having been cut short when she was in her prime, and the fifteen recordings she made were
E、with her career cut short while in her prime, and that the fifteen recordings she made were

答案:

A
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题目：

In 1926, in her second attempt to swim across the English Channel,
Gertrude Ederle not only crossed the Channel against currents that
Forced her to swim thirty-five miles instead of the minimal twenty-one,
but she set a record for speed as well, by swimming the distance in
almost two hours faster than anyone had yet done.

选项:

A、but she set a record for speed as well, by swimming the dis-tance in almost two hours faster than anyone had yet done.
B、but also set a record for speed, swimming the distance almost two hours faster than anyone had yet done.
C、but also swam the distance in almost two hours faster than any-anyone had yet done, and setting a record for speed
D、but also setting a record for speed by swimming the distance in almost two hours faster than anyone had yet done.
E、but, swimming the distance almost two hours faster than anyone had yet done, she also set a record for speed.

答案:

B
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题目：

Carbon-14 dating reveals that the megalithic monuments in Brittany are nearly 2,000 years as old as any of their supposed Mediterranean predecessors.

选项:

A、as old as any of their supposedolder than any of their supposed
B、as old as their supposed
C、older than any of their supposedly
D、as old as their supposedly

答案:

B
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In Berinia, the age at which people could begin to drink alcohol legally used to be 18.  In 1990, in an attempt to reduce alcohol consumption and thereby to reduce alcohol-related traffic deaths among Berinians under 21, the legal drinking age was raised to 21.  Alcohol-related traffic deaths among people under 21 have decreased significantly since 1990.  Nevertheless, surveys show that people in that age-group drink just as much alcohol as they did before 1990.
 
Which of the following, if true of Berinia, most helps to resolve the apparent discrepancy?

选项:

A、For the population as a whole, annual alcohol consumption is no lower now than it was in 1990.
B、Alcohol consumption away from home, for example in bars and restaurants, is much lower among people under 21 than it was in 1990.
C、The proportion of people under 21 who own a car is higher now than it was in 1990.
D、Alcohol consumption is lower among people under 21 than among adults in most other age-groups.
E、Alcohol-related traffic deaths among people over 21 have increased slightly since 1990.

答案:

B
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题目：

 What is the perimeter of Triangle ABC in the figure below?
 

选项:

A、A
B、B
C、C
D、D
E、E

答案:

B
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Personnel officer:  The exorbitant cost of our health-insurance benefits reflects the high dollar amount of medical expenses incurred by our employees.  Employees who are out of shape, as a group, have higher doctor bills and longer hospital stays than do their colleagues who are fit.  Therefore, since we must reduce our health-insurance costs, we should offer a rigorous fitness program of jogging and weight lifting to all employees, and require employees who are out of shape to participate.
 
The conclusion reached by the personnel officer depends on which of the following assumptions?

选项:

A、A person who is fit would receive a routine physical checkup by a doctor less regularly than would a person who is out of shape.
B、The medical expenses incurred by employees who are required to participate in the fitness program would be less than those incurred by employees who are not required to participate.
C、The strenuous activities required of out-of-shape employees by the program would not by themselves generate medical expenses greater than any reduction achieved by the program.
D、The fitness program would serve more employees who are out of shape than it would employees who are fit.
E、The employees who participate in the fitness program would be away from work because of illness less than would the employees who do not participate.

答案:

C
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[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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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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