[Problem Solving]
试题详情
题目：
Of the following symbols, which one can be substituted for the question mark in the above expression to make a true statement for all values of x such that –1 < x ≤ 2 ?
选项:
A、A =
B、B <
C、C ≥
D、D >
E、E ≤
答案:
B
问答
2答疑
2答疑
[Critical Reasoning]
试题详情
题目：
County building inspectors report that almost fifty percent of the homes they inspect are equipped with gauges that monitor carbon monoxide levels. Fifteen years ago, only twenty-five percent of inspected homes were equipped with these gauges. However, even though more homes are now monitored for poisonous carbon monoxide fumes, the total number of homes with confirmed dangerous fume levels is no higher now than it was fifteen years ago because a large proportion of gauges produce false readings.
Which one of the following assumptions must be made in order for the author to be correct in drawing the conclusion stated in the passage?
Which one of the following assumptions must be made in order for the author to be correct in drawing the conclusion stated in the passage?
选项:
A、A. Thirty percent of the residential carbon monoxide gauges have been installed within the last fifteen years.
B、B. The number of confirmed dangerous fume readings per year in homes with carbon monoxide gauges has increased in recent years.
C、C. Not all carbon monoxide gauges report false carbon monoxide fume levels.
D、D. The percentage of malfunctioning carbon monoxide gauges has increased in the last fifteen years.
E、E. Properly functioning gauges do not, in themselves, decrease the risk that dangerous carbon monoxide fumes will enter people's homes.
答案:
D
2答疑
[Sentence Correction]
试题详情
题目：
According to a recent poll, owning and living in a freestanding house on its own land is still a goal of a majority of young adults, like that of earlier generations.
选项:
A、like that of earlier generationsas that for earlier generations
B、just as earlier generations did
C、as have earlier generations
D、as it was of earlier generations
答案:
E
2答疑
[Reading Comprehension]
试题详情
文章：
Most pre-1990 literature on businesses' use of information technology (IT)-defined as any form of computer based information system-focused on spectacular IT successes and reflected a general optimism concerning IT's potential as a resource for creating competitive advantage. But toward the end of the 1980's, some economists spoke of a"productivity paradox"; despite huge IT investments, most notably in the service sectors, productivity stagnated. In the retail industry, for example, in which IT had been widely adopted during the 1980's, productivity (average output per hour) rose at an average annual rate of 1.1 percent between 1973 and 1989, compared with 2.4 percent in the preceding 25-year period. Proponents of IT argued that it takes both time and a critical mass of investment for IT to yield benefits, and some suggested that growth figures for the 1990's proved these benefits were finally being realized. They also argued that measures of productivity ignore what would have happened without investments in IT productivity gains might have been even lower. There were even claims that IT had improved the performance of the service sector significantly, although macroeconomic measures of productivity did not reflect the improvement.
But some observers questioned why, if IT had conferred economic value, it did not produce direct competitive advantages for individual firms. Resource-based theory offers an answer, asserting that, in general, firms gain competitive advantages by accumulating resources that are economically valuable, relatively scarce, and not easily replicated. According to a recent study of retail firms, which confirmed that IT has become pervasive and relatively easy to acquire, IT by itself appeared to have conferred little advantage. In fact, though little evidence of any direct effect was found, the frequent negative correlations between IT and performance suggested that IT had probably weakened some firms' competitive positions. However, firms' human resources, in and of themselves, did explain improved performance, and some firms gained IT-related advantages by merging IT with complementary resources, particularly human resources. The findings support the notion, founded in resource-based theory, that competitive advantages do not arise from easily replicated resources, no matter how impressive or economically valuable they may be, but from complex, intangible resources.
But some observers questioned why, if IT had conferred economic value, it did not produce direct competitive advantages for individual firms. Resource-based theory offers an answer, asserting that, in general, firms gain competitive advantages by accumulating resources that are economically valuable, relatively scarce, and not easily replicated. According to a recent study of retail firms, which confirmed that IT has become pervasive and relatively easy to acquire, IT by itself appeared to have conferred little advantage. In fact, though little evidence of any direct effect was found, the frequent negative correlations between IT and performance suggested that IT had probably weakened some firms' competitive positions. However, firms' human resources, in and of themselves, did explain improved performance, and some firms gained IT-related advantages by merging IT with complementary resources, particularly human resources. The findings support the notion, founded in resource-based theory, that competitive advantages do not arise from easily replicated resources, no matter how impressive or economically valuable they may be, but from complex, intangible resources.
题目：
According to the passage, most pre-1990 literature on businesses' use of IT included which of the following?
选项:
A、Recommendations regarding effective ways to use IT to gain competitive advantage
B、Explanations of the advantages and disadvantages of adopting IT
C、Information about ways in which IT combined with human resources could be used to increase competitive advantage
D、A warning regarding the negative effect on competitive advantage that would occur if IT were not adopted
E、A belief in the likelihood of increased competitive advantage for firms using IT
答案:
E
2答疑
[Critical Reasoning]
试题详情
题目：
Urban planner: When a city loses population due to migration, property taxes in that city tend to rise. This is because there are then fewer residents paying to maintain an infrastructure that was designed to support more people. Rising property taxes, in turn, drive more residents away, compounding the problem. Since the city of Stonebridge is starting to lose population, the city government should therefore refrain from raising property taxes.
Which of the following, if true, would most weaken the urban planner's argument?
选项:
A、
A. If Stonebridge does not raise taxes on its residents to maintain its infrastructure, the city will become much less attractive to live in as that infrastructure decays.
B、
B. Stonebridge at present benefits from grants provided by the national government to help maintain certain parts of its infrastructure.
C、
C. If there is a small increase in property taxes in Stonebridge and a slightly larger proportion of total revenue than at present is allocated to infrastructure maintenance, the funding will be adequate for that purpose.
D、
D. Demographers project that the population of a region that includes Stonebridge will start to increase substantially within the next several years.
E、
E. The property taxes in Stonebridge are significantly lower than those in many larger cities.
答案:
A
2答疑
[Problem Solving]
试题详情
题目：
A certain company that sells only cars and trucks reported that revenues from car sales in 1997 were down 11 percent from 1996 and revenues from truck sales in 1997 were up 7 percent from 1996. If total revenues from car sales and truck sales in 1997 were up 1 percent from 1996, what is the ratio of revenue from car sales in 1996 to revenue from truck sales in 1996?
选项:
A、1:2
B、4:5
C、1:1
D、3:2
E、5:3
答案:
A
2答疑
[Critical Reasoning]
试题详情
题目：
Press Secretary: Our critics claim that the President's recent highway project cancellations demonstrate a vindictive desire to punish legislative districts controlled by opposition parties. They offer as evidence the fact that 90 percent of the projects canceled were in such districts. But all of the canceled projects had been identified as wasteful in a report written by respected nonpartisan auditors. So the President's choice was clearly motivated by sound budgetary policy, not partisan politics.
Which of the following is an assumption on which the press secretary's argument depends?
Which of the following is an assumption on which the press secretary's argument depends?
选项:
A、Canceling highway projects was not the only way for the President to punish legislative districts controlled by opposition parties.
B、The scheduled highway projects identified as wasteful in the report were not mostly projects in districts controlled by the President's party.
C、The number of projects canceled was a significant proportion of all the highway projects that were to be undertaken by the government in the near future.
D、The highway projects canceled in districts controlled by the President's party were not generally more expensive than the projects canceled in districts controlled by opposition parties.
E、Reports by nonpartisan auditors are not generally regarded by the opposition parties as a source of objective assessments of government projects.
答案:
B
2答疑
[Critical Reasoning]
试题详情
题目：
Editorial:
An arrest made by a Midville police officer is provisional until the officer has taken the suspect to the police station and the watch commander has officially approved the arrest. Such approval is denied if the commander judges that the evidence on which the provisional arrest is based is insufficient. A government efficiency expert has found that almost all provisional arrests meet standards for adequacy of evidence that watch commanders enforce. The expert therefore recommends that the watch commander's approval should no longer be required since the officers' time spent obtaining approval is largely wasted. This recommendation should be rejected as dangerous, however, since there is no assurance that the watch commanders' standards will continue to be observed once approval is no longer required.
In the editorial, the two portions in boldface play which of the following roles?
选项:
A、The first is a recommendation made by the editorial; the second acknowledges a potential objection against that recommendation.
B、The first is a proposal against which the editorial is directed; the second is a judgment reached by the editorial concerning that proposal.
C、The first provides evidence in support of a recommendation that the editorial supports; the second is the conclusion reached by the editorial.
D、The first is a position that the editorial challenges; the second is a judgment that was made in support of that challenged position.
E、The first is a recommendation that the editorial questions; the second provides evidence against that recommendation.
答案:
B
2答疑
[Critical Reasoning]
试题详情
题目：
The Hyksos invaded the Nite Delta of Egypt and ruled it from 1550 B. C. Their origin is uncertain, but archaeologists hypothesize that they were Canaatites. In support of this hypothesis, the archaeologists point out that excavations of Avaris,the Hyksos capital in Egypt,have uncovered large numbers of artifacts virtually identical to artifacts produced in Ashkelon, and Ashkelon was a major city of Canaan at the time of the Hyksos' invasion.
In order to evaluate the force of the archaeologists' evidence, it would be most useful to determine which of the following ?
选项:
A、Whether artifacts from Ashkelon were widely traded to non-Canaanite cities
B、Whether significant numbers of artifacts that do not resemble artifacts produced in Ashkelon have been found at Avaris
C、Whether Avaris was the nearest Hyksos city in Egypt to Canaan
D、Whether Ashkelon after 1550 b.C. continued to produce artifacts similar to those found at Avaris
E、Whether any artifacts produced by the Hyksos arter 1550 B.C. have been found in Egypt
答案:
A
2答疑
[Data Sufficiency]
试题详情
题目：
Seven different numbers are selected from the integers 1 to 100, and each number is divided by 7. What is the sum of the remainders?
(1) The range of the seven remainders is 6.
(2) The seven numbers selected are consecutive integers.
选项:
答案:
B
0评分
444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
1492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
1684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
635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
1460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
1037浏览
0评分
692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
704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
166026浏览
0评分
173140浏览
