问答

3答疑

[Argument Essay]

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题目：

Read the statement and the instructions that follow it, and then make any notes that will help you plan your response. Begin typing your response in the box at the bottom of the screen.
 
"When choosing whether to work in color or in black-~and-white, the photographer .  who wishes to be successful should keep in mind that because color photographs are more true-to-life, magazines use more color photographs than black-and-white ones ,and  many newspapers are also starting to use color photographs. The realism of color also accounts for the fact that  most portrait studios use more color film than black -and-white film. Furthermore, there are more types of color film than black-and-white film available today. Clearly, photographers who work in color have an advantage over those who work in black-and-white."
 
Discuss how well reasoned. . .etc

选项:

答案:

3答疑

[Critical Reasoning]

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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 of scientists who produce highly creative work beyond the age of forty, a disproportionately large number 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 aged but rather that scientists over forty have generally spent too long in their field.

In the argument given, the two portions in boldface play which of the following roles?

选项:

A、The first is a claim, the accuracy of which is at issue in the argument; the second is a conclusion drawn on the basis of that claim.
B、The first is an objection that has been raised against a position defended in the argument; the second is that position.
C、The first is evidence that has been used to support an explanation that the argument challenges; the second is that explanation.
D、The first is evidence that has been used to support an explanation that the argument challenges; the second is a competing explanation that the argument favors.
E、The first provides evidence to support an explanation that the argument favors; the second is that explanation.

答案:

E
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[Sentence Correction]

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题目：

Rejecting the apprenticeship model of training social workers in philanthropic agencies, twentieth-century reformer Edith Abbott was convinced of social work education belonging in the university so that students could be offered a broad range of courses dealing with social issues. 

选项:

A、of social work education belonging in the university so that
B、that social work education should be in the university, and that
C、about the importance of social work education belonging in the university while
D、that social work education belonged in the university, where
E、of the necessity of social work education being in the university and

答案:

D
3答疑

[Critical Reasoning]

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题目：

Last year all refuse collected by Shelbyville city services was incinerated. This incineration generated a large quantity of residual ash. In order to reduce the amount of residual ash Shelbyville generates this year to half of last year’s total, the city has revamped its collection program. This year city services will separate for recycling enough refuse to reduce the number of truckloads of refuse to be incinerated to half of last year’s number.

Which of the following is required for the revamped collection program to achieve its aim?

选项:

A、This year, no materials that city services could separate for recycling will be incinerated.
B、Separating recyclable materials from materials to be incinerated will cost Shelbyville less than half what it cost last year to dispose of the residual ash.
C、Refuse collected by city services will contain a larger proportion of recyclable materials this year than it did last year.
D、The refuse incinerated this year will generate no more residual ash per truckload incinerated than did the refuse incinerated last year.
E、The total quantity of refuse collected by Shelbyville city services this year will be no greater than that collected last year.

答案:

D
3答疑

[Critical Reasoning]

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题目：

Normally, the pineal gland governs a person’s sleep-wake cycle by secreting melatonin in response to the daily cycle of light and darkness as detected by the eye. Nonetheless, many people who are totally blind due to lesions in the visual cortex of the brain easily maintain a 24-hour sleep-wake cycle. So the neural pathway by which the pineal gland receives information from the eye probably does not pass through the visual cortex.

For purposes of evaluating the argument it would be most useful to establish which of the following?

选项:

A、Whether melatonin supplements help people who have difficulty maintaining a 24-hour sleep cycle to establish such a pattern
B、Whether the melatonin levels of most totally blind people who successfully maintain a 24-hour sleep-wake cycle change in response to changes in exposure to light and darkness
C、Whether melatonin is the only substance secreted by the pineal gland
D、Whether most people who do not have a 24-hour sleep-wake cycle nevertheless have a cycle of consistent duration
E、Whether there are any people with normal vision whose melatonin levels respond abnormally to periods of light and darkness

答案:

B
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[Sentence Correction]

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题目：

Unlike most severance packages, which require workers to stay
until the last day scheduled to collect, workers at the automobile
company are eligible for its severance package even if they find
a new job before they are terminated.

选项:

A、the last day scheduled to collect, workers at the automobile company are eligible for its severance package.
B、the last day they are scheduled to collect, workers are eligible for the automobile company's severance package
C、their last scheduled day to collect, the automobile company offers its severance package to workers.
D、their last scheduled day in order to collect, the automobile company's severance package is available to workers.
E、the last day that they are scheduled to collect, the automobile company's severance package is available to workers.

答案:

D
3答疑

[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
3答疑

[Reading Comprehension]

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文章：

    Two opposing scenarios, the "arboreal" hypothesis and the "cursorial" hypothesis, have traditionally been put forward concerning the origins of bird flight. The "arboreal" hypothesis holds that bird ancestors began to fly by climbing frees and gliding down from branches with the help of incipient feathers: the height of trees provides a good starting place for launching flight, especially through gliding. As feathers became larger over time, flapping flight evolved and birds finally became fully air-borne. This hypothesis makes intuitive Sense, but certain aspects are Troubling. Archaeopteryx (the earliest known bird) and its maniraptoran dinosaur cousins have no obviously arboreal adaptations, such as feet fully adapted for perching. Perhaps some of them could climb trees, but no convincing analysis has demonstrated how Archaeopteryx would have both climbed and flown with its forelimbs, and there were no plants taller than a few meters in the environments where Archaeopteryx fossils have been found. Even if the animals could climb trees, this ability is not synonymous with gliding ability. (Many small animals, and even some goats and kangaroos, are capable of climbing trees but are not gliders.) Besides, Archaeopteryx shows no obvious features of gliders, such as a broad membrane connecting forelimbs and hind limbs.

    The "cursorial"(running) hypothesis holds that small dinosaurs ran along the ground and stretched out their arms for balance as they leaped into the air after insect prey or, perhaps, to avoid predators. Even rudimentary feathers on forelimbs could have expanded the arm's surface area to enhance lift slightly. Larger feathers could have increased lift incrementally, until sustained flight was gradually achieved. Of course, a leap into the air does not provide the acceleration produced by dropping out of a tree; an animal would have to run quite fast to take off. Still, some small terrestrial animals can achieve high speeds. The cursorial hypothesis is strengthened by the fact that the immediate theropod dinosaur ancestors of birds were terrestrial, and they had the traits needed for high lift off speeds: they were small, agile, lightly built, long-legged, and good runners. And because they were bipedal, their arms were free to evolve flapping flight, which cannot be said for other reptiles of their time.

题目：

Which of the following is included in the discussion of the cursorial hypothesis but not in the discussion of the arboreal hypothesis?

选项:

A、A discussion of some of the features of Archaeopteryx
B、A description of the environment known to have been inhabited by bird ancestors
C、A possible reason why bird ancestors might have been engaging in activities that eventually evolved into flight
D、A description of the obvious features of animals with gliding ability
E、An estimate of the amount of time it took for bird ancestors to evolve the kind of flapping flight that allowed them to become completely airborne

答案:

C
3答疑

[Sentence Correction]

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题目：

The principal feature of the redesigned checks is a series of printed instructions that the company hopes will help merchants confirm a check's authenticity, which includes reminders to watch the endorsement, compare signatures, and view the watermark while holding the check to the light.

选项:

A、which includes reminders to watch the endorsement, compare signatures, and view
B、which include reminders for watching the endorsement, to compare signatures and view
C、by including reminders for watching the endorsement, comparing signatures, and viewing
D、including reminders to watch the endorsement, comparing signatures and viewing
E、including reminders to watch the endorsement, compare signatures, and view

答案:

E
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[Sentence Correction]

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题目：

The commission's office of compliance, inspections, and investigations plans to intensify its scrutiny of stock analysts to investigate not only whether research is an independent function at brokerage firms, but also whether conflicts result when analysts own the stocks they write about or when they are paid for their work by a firm's investment banking division.
 

选项:

A、to investigate not only whether research is an independent function at brokerage firms, but also whether conflicts result when analysts own the stocks they write about or when they are
B、to investigate not only whether research is an independent function at brokerage firms, but also if conflicts result when analysts own the stocks they write about or they are
C、to not only investigate whether or not research is an independent function at brokerage firms, but also if conflicts result when analysts own the stocks they write about or are
D、not only to investigate whether or not research is an independent function at brokerage firms, but also whether conflicts result when analysts own the stocks they write about or are
E、not only to investigate whether research is an independent function at brokerage firms, but also whether conflicts result when analysts own the stocks they write about or when

答案:

A
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569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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1713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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1915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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719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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1627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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1145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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769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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788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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180988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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188102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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