[Problem Solving]
试题详情
题目：
if the function F is defined by F(x)=x^2+1/x^2 for all nonzero numbers X, then F(-1/X)=
选项:
A、–1/f(x)
B、1/f(x)
C、1-f(x)
D、–f(x)
E、f(x)
答案:
E
问答
1答疑
1答疑
[Sentence Correction]
试题详情
题目：
The cameras of the Voyager II spacecraft detected six small, previously unseen moons circling Uranus, which doubles to twelve the number of satellites now known as orbiting the distant planet
选项:
A、which doubles to twelve the number of satellites now known as orbitingdoubling to twelve the number of satellites now known to orbit
B、which doubles to twelve the number of satellites now known in orbit around
C、doubling to twelve the number of satellites now known as orbiting
D、which doubles to twelve the number of satellites now known that orbit
答案:
B
1答疑
[Critical Reasoning]
试题详情
文章：
The growing popularity of computer-based activities was widely predicted to result in a corresponding decline in television viewing. Recent studies have found that, in the United States, people who own computers watch, on average, significantly less television than people who do not own computers. In itself, however, this finding does very little to show that computer use tends to reduce television viewing time, since __________.
题目：
Which of the following most logically completes the argument?
选项:
A、many people who watch little or no television do not own a computereven though most computer owners in the United States watch significantly less television than the national average, some computer owners watch far more television than the national average
B、computer owners in the United States predominantly belong to demographic groups that have long been known to spend less time watching television than the population as a whole does
C、many computer owners in the United States have enough leisure time that spending significant amounts of time on the computer still leaves ample time for watching television
D、many people use their computers primarily for tasks such as correspondence that can be done more rapidly on the computer, and doing so leaves more leisure time for watching television
答案:
C
1答疑
[Sentence Correction]
试题详情
题目：
In 1776 Adam Smith wrote that it is young people who have “the contempt of risk and the presumptuous hope of success” needed to found new businesses.
选项:
答案:
A
1答疑
[Sentence Correction]
试题详情
题目：
The golden crab of the Gulf of Mexico has not been fished commercially in great numbers, primarily on account of living at great depths—2,500 to 3,000 feet down.
选项:
A、on account of living
B、on account of their living
C、because it lives
D、because of living
E、being they live
答案:
C
1答疑
[Reading Comprehension]
试题详情
题目：
The author of the passage mentions the "OH! NO!" system primarily in order to
选项:
A、indicate a way in which the United States industry has become more like the Japanese auto industry
B、challenge a particular misconception about worker empowerment in the Japanese auto industry
C、illustrate the kinds of problem-solving techniques encouraged by company unions in Japan
D、suggest an effective way of minimizing production costs in auto manufacturing
E、provide an example of the responsibilities assumed by a foreman in the Japanese auto industry
答案:
B
1答疑
[Data Sufficiency]
试题详情
题目：
In the figure shown, the circle has center O and radius 50, and point P has coordinates (50,0). If point Q (not shown) is on the circle, what is the length of line segment PQ ?
(1) The x-coordinate of point Q is – 30.
(2) The y-coordinate of point Q is – 40.
e选项:
答案:
A
1答疑
[Critical Reasoning]
试题详情
文章：
Citizens of Parktown are worried by the increased frequency of serious crimes committed by local teenagers. In response, the city government has instituted a series of measures designed to keep teenagers at home in the late evening. Even if the measures succeed in keeping teenagers at home, however, they are unlikely to affect the problem that concerns citizens, since most crimes committed by local teenagers take place between 3 p.m. and 6 p.m.
题目：
Which of the following, if true, most substantially weakens the argument?
选项:
A、Similar measures adopted in other places have failed to reduce the number of teenagers on the streets in the late evening. The crimes committed by teenagers in the afternoon are mostly small thefts and inconsequential vandalism.
B、Teenagers are much less likely to commit serious crimes when they are at home than when they are not at home.
C、Any decrease in the need for police patrols in the late evening would not mean that there could be more intensive patrolling in the afternoon.
D、The schools in Parktown have introduced a number of after-school programs that will be available to teenagers until 6 p.m. on weekday afternoons
答案:
B
1答疑
[Critical Reasoning]
试题详情
题目：
Which of the following most logically completes the argument below?
According to promotional material published by the city of Springfield, more tourists stay in hotels in Springfield than stay in the neighboring city of Harristown. A brochure from the largest hotel in Harristown claims that more tourists stay in that hotel than stay in the Royal Arms Hotel in Springfield. If both of these sources are accurate, however, the "Report on Tourism" for the region must be in error in stating that ______.
选项:
A、the average length of stay is longer at the largest hotel in Harristown than it is at the Royal Arms Hotel
B、there is only one hotel in Harristown that is larger than the Royal Arms Hotel
C、more tourists stay in hotels in Harristown than stay in the Royal Arms Hotel
D、the Royal Arms Hotel is the largest hotel in Springfield
E、the Royal Arms Hotel is the only hotel in Springfield
答案:
E
1答疑
[Problem Solving]
试题详情
题目：
A manufacturer makes and sells 2 products, P and Q. The revenue from the sale of each unit of P is $20.00 and the revenue from the sale of each unit of Q is $17.00. Last year the manufacturer sold twice as many units of Q as P. What was the manufacturer’s average (arithmetic mean) revenue per unit sold of these 2 products last year?
选项:
A、$28.50
B、$27.00
C、$19.00
D、$18.50
E、$18.00
答案:
E
0评分
367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
1344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
1518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
584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
1353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
962浏览
0评分
644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
654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
154542浏览
0评分
161651浏览
