[Data Sufficiency]
试题详情
题目：
If S is a set of ten consecutive integers, is the integer 5 in S?
(1) The integer -3 is in S.
(2) The integer 4 is in S.
选项:
答案:
E
问答
1答疑
1答疑
[Critical Reasoning]
试题详情
题目：
In an experiment, volunteers walked individually through a dark, abandoned theater. Half of the volunteers had been told that the theater was haunted and the other half that it was under renovation. The first half reported significantly more unusual experiences than the second did. The researchers concluded that reports of encounters with ghosts and other supernatural entities generally result from prior expectations of such experiences.
Which of the following, if true, would most seriously weaken the researchers' reasoning?
选项:
A、
A. None of the volunteers in the second half believed that the unusual experiences they reported were supernatural.
B、
B. All of the volunteers in the first half believed that the researchers' statement that the theater was haunted was a lie.
C、
C. Before being told about the theater, the volunteers within each group varied considerably in their prior beliefs about supernatural experiences.
D、
D. Each unusual experience reported by the volunteers had a cause that did not involve the supernatural.
E、
E. The researchers did not believe that the theater was haunted.
答案:
B
1答疑
[Reading Comprehension]
试题详情
题目：
The passage suggests which of the following about the empirical study of small firms' role?
选项:
A、Anecdotal evidence does not support the theory that small firms' role is significant.
B、Degrees of market turbulence are the primary indicator of small firms' role.
C、An examination of new niches created by small firms has provided important data for the analysis of such firms' role.
D、Case studies have provided reliable evidence to answer major questions concerning small firms' role.
E、A more precise definition of the term "small firm" is crucial to making a conclusive analysis about small firms' role.
答案:
E
1答疑
[Problem Solving]
试题详情
题目：
Three printing presses, R , S , and T , working together at their respective constant rates, can do a certain printing job in 4 hours. S and T , working together at their respective constant rates, can do the same job in 5 hours. How many hours would it take R , working alone at its constant rate, to do the same job?
选项:
A、8
B、10
C、12
D、15
E、20
答案:
E
1答疑
[Sentence Correction]
试题详情
题目：
Because many of Australia's marsupials, such as the koala, are cute and cuddly, as well as being biologically different than North American marsupials, they have attracted a lot of attention after their discovery in the 1700s.
选项:
A、being biologically different than North American marsupials, they have attracted a lot of attention after
B、being biologically different from North American marsupials, they attracted a lot of attention since
C、biologically different than North American marsupials, they attracted a lot of attention since
D、biologically different than North American marsupials, they have attracted a lot of attention after
E、biologically different from North American marsupials, they have attracted a lot of attention since
答案:
E
1答疑
[Critical Reasoning]
试题详情
文章：
Because it was long thought that few people would watch lengthy televised political messages, most televised political advertisements, like commercial advertisements, took the form of short messages. Last year, however, one candidate produced a half-hour-long advertisement. At the beginning of the half-hour slot a substantial portion of the viewing public had tuned in to that station. Clearly, then, many more people are interested in lengthy televised political messages than was previously thought.
题目：
Which of the following, if true, most seriously weakens the argument?
选项:
A、The candidate who produced the half-hour-long advertisement did not win election at the polls. The half-hour-long advertisement was widely publicized before it was broadcast.
B、The half-hour-long advertisement was aired during a time slot normally taken by one of the most popular prime-time shows.
C、Most short political advertisements are aired during a wide range of programs in order to reach a broad spectrum of viewers.
D、In general a regular-length television program that features debate about current political issues depends for its appeal on the personal qualities of the program's moderator.
答案:
C
1答疑
[Data Sufficiency]
试题详情
题目：
if X＞1 and Y＞1, is X＜Y?
(1) X^2/(XY+X)＜1
(2) XY/Y^2-Y＜1
选项:
答案:
B
1答疑
[Problem Solving]
试题详情
题目：
Six machines, each working at the same constant rate, together can complete a certain job in 12 days. How many additional machines, each working at the same constant rate, will be needed to complete the job in 8 days?
选项:
A、2
B、3
C、4
D、6
E、8
答案:
B
1答疑
[Reading Comprehension]
试题详情
文章：
In the 1980's, astronomer Bohdan Paczynski proposed a way of determining whether the enormous dark halo constituting the outermost part of the Milky Way galaxy is composed of MACHO's (massive compact halo objects), which are astronomical objects too dim to be visible. Paczynski reasoned that if MACHO's make up this halo, a MACHO would occasionally drift in front of a star in the Large Magellanic Cloud, a bright galaxy near the Milky Way. The gravity of a MACHO that had so drifted, astronomers agree, would cause the star's light rays, which would otherwise diverge, to bend together so that, as observed from Earth, the star would temporarily appear to brighten, a process known as microlensing. Because many individual stars are of intrinsically variable brightness, some astronomers have contended that the brightening of intrinsically variable stars can be mistaken for microlensing.
However, whereas the different colors of light emitted by an intrinsically variable star are affected differently when the star brightens, all of a star's colors are equally affected by microlensing. Thus, if a MACHO magnifies a star's red light tenfold, it will do the same to the star's blue light and yellow light. Moreover, it is highly unlikely that a star in the Large Magellanic Cloud will undergo microlensing more than once, because the chance that a second MACHO would pass in front of exactly the same star is minuscule.
题目：
The passage is primarily concerned with
选项:
A、outlining reasons why a particular theory is no longer- credited by some astronomers
B、presenting data collected by a researcher in response to some astronomers' criticism of a particular line of reasoning
C、explaining why a researcher proposed a particular theory and illustrating how influential that theory has been
D、showing how a researcher's theory has been used to settle a dispute between the researcher and some astronomers
E、describing a line of reasoning put forth by a researcher and addressing a contention concerning that line of reasoning
答案:
E
1答疑
[Sentence Correction]
试题详情
题目：
The arrest of a programmer accused of violating an American digital copyright law has stirred significant opposition, against both the law itself and against the software company that had initiated the case.
选项:
A、against both the law itself and against the software company that had
B、against both the law itself and also the software company having
C、against both the law itself and the software company that
D、both against the law itself and the software company that had
E、both against the law itself and also against the software company having
答案:
C
0评分
1940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.
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
5048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
5727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
1928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
4151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
2914浏览
0评分
1931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
2014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
428504浏览
0评分
435642浏览
