问答

4答疑

[Sentence Correction]

试题详情

题目:

After more than four decades of research and development, a new type of jet engine is being tested that could eventually propel aircraft anywhere in the world within two hours or help boost cargoes into space at significantly lower costs than current methods permit.

选项:

A、tested that could eventually propel aircraft anywhere in the world within two hours or help
B、tested that could eventually have the capability of propelling aircraft anywhere in the world within two hours or to help
C、tested, eventually able to propel aircraft anywhere in the world within two hours, or helping
D、tested, and it eventually could propel aircraft anywhere in the world within two hours or helping
E、tested, and it could eventually have the capability to propel aircraft anywhere in the world within two hours or help

答案:

A
4答疑

[Reading Comprehension]

试题详情

文章:

Dendrochronology, the study of tree-ring records to glean information about the past, is possible because each year a tree adds a new layer of wood between the existing wood and the bark.  In temperate and subpolar climates, cells added at the growing season's start are large and thin-walled, but later the new cells that develop are smaller and thick-walled; the growing season is followed by a period of dormancy.  When a tree trunk is viewed in cross section, a boundary line is normally visible between the small-celled wood added at the end of the growing season in the previous year and the large-celled spring wood of the following year's growing season.  The annual growth pattern appears as a series of larger and larger rings.  In wet years rings are broad; during drought years they are narrow, since the trees grow less.  Often, ring patterns of dead trees of different, but overlapping, ages can be correlated to provide an extended index of past climate conditions.
 
However, trees that grew in areas with a steady supply of groundwater show little variation in ring width from year to year; these "complacent" rings tell nothing about changes in climate.  And trees in extremely dry regions may go a year or two without adding any rings, thereby introducing uncertainties into the count.  Certain species  sometimes add more than one ring in a single year, when growth halts temporarily and then starts again.

题目:

In the highlighted text, "uncertainties" refers to

选项:

A、dendrochronologists' failure to consider the prevalence of erratic weather patterns
B、inconsistencies introduced because of changes in methodology
C、some tree species' tendency to deviate from the norm
D、the lack of detectable variation in trees with complacent rings
E、the lack of perfect correlation between the number of a tree's rings and its age

答案:

E
4答疑

[Critical Reasoning]

试题详情

题目:

Senator Janice White is quietly lobbying to become chairman of one of the Senate’s most prestigious committees. However, that post currently belongs to Senator Dan Smith. If Senator Smith already has twenty senators committed to his continued chairmanship of the committee, then Senator White will consider another committee. If Senator Smith does not have that much support lined up yet, then Senator White will study Senator Smith’s past committee voting record for inconsistent and unpopular votes. If Senator White finds that Smith’s voting record is out of favor with today’s voter and publicizes it, then her chances of capturing the chairmanship would be increased, and she would publicly announce her interest in the chairmanship. If Senator Smith’s committee voting record is in keeping with current public sentiment and contains no inconsistencies, then Senator White will focus her attention on another committee chairmanship.
Based upon the information provided in the passage, which one of the following statements must be false?

选项:

A、A. Senator Smith has lined up only five votes, and Senator White drops her interest in the committee chairmanship.
B、B. A number of inconsistencies are found in Senator Smith's voting record, and Senator White publicly announces her interest in the committee chairmanship.
C、C. Several of Senator Smith's past committee votes would find disfavor with today's voting public, and Senator White does not pursue the committee chairmanship.
D、D. Senator Smith's past committee voting record contains nothing that would increase Senator White's chances of obtaining the chairmanship, and Senator White publicly announces her interest in being named chairman.
E、E. Senator Smith already has the support of thirty of his fellow senators, and Senator White focuses her interest on another committee.

答案:

D
4答疑

[Critical Reasoning]

试题详情

题目:

Some anthropologists study modern-day societies of foragers in an effort to learn about our ancient ancestors who were also foragers. A flaw in this strategy is that forager societies are extremely varied. Indeed, any forager society with which anthropologists are familiar has had considerable contact with modern, non-forager societies.

Which of the following, if true, would most weaken the criticism made above of the anthropologists’ strategy?

选项:

A、All forager societies throughout history have had a number of important features in common that are absent from other types of societies.
B、Most ancient forager societies either dissolved or made a transition to another way of life.
C、All anthropologists study one kind or another of modern-day society.
D、Many anthropologists who study modern-day forager societies do not draw inferences about ancient societies on the basis of their studies.
E、Even those modern-day forager societies that have not had significant contact with modern societies are importantly different from ancient forager societies.

答案:

A
4答疑

[Critical Reasoning]

试题详情

题目:

Public health expert: Increasing the urgency of a public health message may be counterproductive. In addition to irritating the majority who already behave responsibly, it may undermine all government pronouncements on health by convincing people that such messages are overly cautious. And there is no reason to believe that those who ignore measured voices will listen to shouting.

The two sections in boldface play which of the following roles in the public health expert’s argument?

选项:

A、The first is a conclusion for which support is provided, but is not the argument’s main conclusion; the second is an unsupported premise supporting the argument’s main conclusion.
B、The first is a premise supporting the only explicit conclusion; so is the second.
C、The first is the argument’s main conclusion; the second supports that conclusion and is itself a conclusion for which support is provided.
D、The first is a premise supporting the argument’s only conclusion; the second is that conclusion.
E、The first is the argument’s only explicit conclusion; the second is a premise supporting that conclusion.

答案:

E
4答疑

[Sentence Correction]

试题详情

题目:

Turtles, like other reptiles, can endure long fasts, in their ability to survive on weekly or even monthly feedings; however, when food is readily available, they may eat frequently and grow very fat.

选项:

A、fasts, in their ability to survive
B、fasts, having their ability to survive
C、fasts, due to having the ability of surviving
D、fasts because they are able to survive
E、fasts because of having the ability of surviving

答案:

D
4答疑

[Critical Reasoning]

试题详情

题目:

In Stenland, many workers have been complaining that they cannot survive on minimum wage, the lowest wage an employer is permitted to pay. The government is proposing to raise the minimum wage. Many employers who pay their workers the current minimum wage argue that if it is raised, unemployment will increase because they will no longer be able to afford to employ as many workers.

Which of the following, if true in Stenland, most strongly supports the claim that raising the minimum wage there will not have the effects that the employers predict?

选项:

A、For any position with wages below a living wage, the difficulty of finding and retaining employees adds as much to employment costs as would raising wages.
B、Raising the minimum wage does not also increase the amount employers have to contribute in employee benefits.
C、When inflation is taken into account, the proposed new minimum wage is not as high as the current one was when it was introduced.
D、Many employees currently being paid wages at the level of the proposed new minimum wage will demand significant wage increases.
E、Many employers who pay some workers only the minimum wage also pay other workers wages that are much higher than the minimum.

答案:

A
4答疑

[Reading Comprehension]

试题详情

文章:

    In a 1918 editorial, W.E.B. Du Bois advised African Americans to stop agitating for equality and to proclaim their solidarity with White Americans for the duration of the First World War. The editorial surprised many African Americans who viewed Du Bois as an uncompromising African American leader and a chief opponent of the accommodationist tactics urged by Booker, T.Washington. In fact, however, Du Bois often shifted positions along the continuum between Washington and confrontationists such as William Trotter. In 1895, when Washington called on African Americans to concentrate on improving their communities instead of opposing discrimination and agitating for political rights, Du Bois praised Washington's speech. In 1903, however, Du Bois aligned himself with Trotter, Washington's militant opponent, less for ideological reasons than because Trotter had described to him Washington's efforts to silence those in the African American press who opposed Washington's positions.reflected not a change in his long-term goals but rather a pragmatic response in the face of social pressure: government officials had threatened African American journalists with censorship if they continued to voice grievances. Furthermore, Du Bois believed that African Americans' contributions to past war efforts had brought them some legal and political advances. Du Bois' accommodationism did not last, however. Upon learning of systematic discrimination experienced by African Americans in the military, he called on them to "return fighting" from the war.

题目:

According to the passage, which of the following is true of the strategy that Du Bois' 1918 editorial urged African Americans to adopt during the First World War?

选项:

A、It was a strategy that Du Bois had con-sistently rejected in the past.
B、It represented a compromise between Du Bois' own views and those of Trotter.
C、It represented a significant redefinition of the long-term goals Du Bois held prior to the war.
D、It was advocated by Du Bois in response to his recognition of the discrimination faced by African Americans during the war.
E、It was advocated by Du Bois in part because of his historical knowledge of gains African Americans had madeduring past wars.

答案:

E
4答疑

[Sentence Correction]

试题详情

题目:

The computer company's present troubles are a result of techno-
logical stagnation, marketing missteps, and managerial blunders
so that several attempts to revise corporate strategies have failed
to correct it.

选项:

A、so that several attempts to revise corporate strategies have failed to correct it.
B、so that several attempts at revising corporate strategies have failed to correct
C、in that several attempts at revising corporate strategies have failed to correct them
D、that several attempts to revise corporate strategies have failed to correct
E、that several attempts at revising corporate strategies have failed to correct them

答案:

D
4答疑

[Problem Solving]

试题详情

题目:

             150, 200, 250, n
 
Which of the following could be the median of the 4 integers listed above?
 
I.       175
II.      215
III.     235

选项:

A、I only
B、II only
C、I and II only
D、II and III only
E、I, II, and III

答案:

C
0评分
946浏览

[Undefined]

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?
0评分
2753浏览

[Undefined]

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
0评分
3041浏览

[Undefined]

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
0评分
1037浏览

[Undefined]

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?
0评分
2366浏览

[GWD]

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
0评分
1641浏览

[OG]

The primary purpose of the passage is to
为什么选E不选B
0评分
1056浏览

[Undefined]

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
0评分
1118浏览

[Undefined]

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
0评分
258649浏览

[Undefined]

Analytical!
请问may老师,这题该用什么思路来做?
0评分
265766浏览

[Undefined]

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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