[Problem Solving]
试题详情
题目：
In the figure shown, line segments QS and RT are diameters of the circle. If the distance between Q and R is 
ാ选项:
A、4π
B、8π
C、16π
D、32π
E、64π
答案:
C
问答
1答疑
1答疑
[Problem Solving]
试题详情
题目：
A company has two types of machines, type R and type S. Operating at a constant rate, a machine of type R does a certain job in36 hours and a machine of type S does the same job in 18 hours. If the company used the same number of each type of machine to do the job in 2 hours, how many machines of type R were used?
选项:
A、3
B、4
C、6
D、9
E、12
答案:
C
1答疑
[Reading Comprehension]
试题详情
文章：
| Line | In current historiography, the picture of a consistent, |
| unequivocal decline in women’s status with the advent | |
| of capitalism and industrialization is giving way to an | |
| analysis that not only emphasizes both change (whether | |
| (5) | improvement or decline) and continuity but also |
| accounts for geographical and occupational variation. | |
| The history of women’s work in English farmhouse | |
| cheese making between 1800 and 1930 is a case in | |
| point. In her influential Women Workers and the Industrial | |
| (10) | Revolution (1930), Pinchbeck argued that the agricultural |
| revolution of the eighteenth and early nineteenth | |
| centuries, with its attendant specialization and enlarged | |
| scale of operation, curtailed women’s participation in | |
| the business of cheese production. Earlier, she | |
| (15) | maintained, women had concerned themselves with |
| feeding cows, rearing calves, and even selling the | |
| cheese in local markets and fairs. Pinchbeck thought | |
| that the advent of specialization meant that women’s | |
| work in cheese dairying was reduced simply to | |
| (20) | processing the milk. “Dairymen” (a new social category) |
| raised and fed cows and sold the cheese through | |
| factors, who were also men. With this narrowing of the | |
| scope of work, Pinchbeck believed, women lost | |
| business ability, independence, and initiative. | |
| (25) | Though Pinchbeck portrayed precapitalist, |
| preindustrial conditions as superior to what followed, | |
| recent scholarship has seriously questioned the notion | |
| of a golden age for women in precapitalist society. For | |
| example, scholars note that women’s control seldom | |
| (30) | extended to the disposal of the proceeds of their |
| work. In the case of cheese, the rise of factors may | |
| have compromised women’s ability to market cheese | |
| at fairs. But merely selling the cheese did not | |
| necessarily imply access to the money: Davidoff cites | |
| (35) | the case of an Essex man who appropriated all but a |
| fraction of the money from his wife’s cheese sales. | |
| By focusing on somewhat peripheral operations, | |
| moreover, Pinchbeck missed a substantial element | |
| of continuity in women’s participation: throughout the | |
| (40) | period women did the central work of actually |
| making cheese. Their persistence in English cheese | |
| dairying contrasts with women’s early disappearance | |
| from arable agriculture in southeast England and | |
| from American cheese dairying. Comparing these | |
| (45) | three divergent developments yields some reasons |
| for the differences among them. English cheese- | |
| making women worked in a setting in which cultural | |
| values, agricultural conditions, and the nature of | |
| their work combined to support their continued | |
| (50) | participation. In the other cases, one or more of |
| these elements was lacking. |
题目：
The passage describes the work of Pinchbeck primarily in order to
选项:
A、demonstrate that some of the conclusions reached by recent historians were anticipated in earlier scholarship
B、provide an instance of the viewpoint that, according to the passage’s author, is being superseded
C、illustrate the ways in which recent historians have built on the work of their predecessors
D、provide a point of reference for subsequent scholarship on women’s work during the agricultural revolution
E、show the effect that the specialization introduced in the agricultural and industrial revolutions had on women’s work
答案:
B
1答疑
[Graphics Interpretation]
试题详情
题目：
In 2010, there were four used-car dealers in City Z. The graphic shows the monthly sales data for 2010 for two of those dealers as well as the citywide average for used-car dealers for those months.
Based on the given information, use the drop-down menus to most accurately complete the following statements.
选项:
ABC Cars and XYZ Automotive accounted for half of all used-car sales in City Z for 2010.
In June 2010, the two used-car dealers that are not specified on the graph sold a total of exactly cars.
答案:
A B
1答疑
[Multi-Source Reasoning]
试题详情
文章：
Article
The expenses related to sponsoring a conference can be immense. An organization sponsoring a conference can recoup these expenses through registration fees and partnership with the host hotel. As part of the partnership, the host hotel sets aside a block of rooms for conference attendees, with rooms available at a slightly higher-than-normal rate.
While most conference attendees prefer to stay in the host hotel, they often follow an alternate strategy to avoid the extra cost of reserving a room within the block at the host hotel. Some attendees reserve rooms outside the host hotel—the ROHH strategy. Others reserve rooms outside the block—the ROB strategy.
Conference sponsors have succeeded in countering these strategies by increasing the conference registration fee by a fixed amount and then offering an equivalent registration fee discount to attendees who book rooms in the block. A study has shown that if this registration discount is equal to at least half the potential savings of an attendee's particular cost-saving strategy, the attendee is much more likely to reserve a room within the block.
Weekend Conferences
Ten conferences are scheduled for the same weekend in City X. For each conference, the table lists the conference sponsor, the registration fee, the discounted registration fee (if any), the host hotel, the rate for rooms in the block at the host hotel, and the lowest rate for an available room in the host hotel during that same weekend. Conference attendees will require two nights lodging, and all room rates are per guest, per night, assuming two guests per room. The lowest rate for an available room in City X on this same weekend is S65.
题目：
3. Let X denote the block rate of the host hotel for a particular conference, and let Y denote the lowest room rate available in the host outside of the conference block. For a conference that requires a two-night hotel stay, which one of the following expressions represents the least amount of discount on the conference attendees from employing the ROB strategy in choosing accommodations?
选项:
A、X+Y/2
B、X-Y/2
C、X-Y
D、X+Y
E、2(X-Y)
答案:
C
1答疑
[Table Analysis]
试题详情
题目：
19. The table lists minimum temperature, maximum temperature, and weather conditions reported in 30 cities on 6 continents on February 19, 2011.
| City | Continent | Minimun temperture(℃） | Maximum temperarure（℃） | weather condition |
| Atlanta | North America | 11 | 21 | Cloudy |
| Auckland | Oceania | 18 | 25 | Cloudy |
| Bangkok | Asia | 26 | 34 | Cloudy |
| Beijing | Asia | -3 | 10 | fine |
| Berlin | Europe | -4 | -1 | Cloudy |
| Buenos Aires | South America | 20 | 29 | rain |
| Cairo | Africa | 14 | 24 | fine |
| Chicago | North America | -4 | 3 | Cloudy |
| Dubin | Europe | 5 | 11 | bright |
| Frankfurt | Europe | 1 | 7 | Cloudy |
| Houston | North America | 16 | 24 | Cloudy |
| Johannesburg | Africa | 16 | 26 | thunderstorms |
| Kuala Lumour | Asia | 24 | 33 | rain |
| London | Europe | 24 | 33 | rain |
| Los Angeles | North America | 5 | 10 | showers |
| Madrid | Europe | 5 | 12 | rain |
| Manlia | Asia | 22 | 32 | thunderstorms |
| Mexico City | North America | 7 | 25 | fine |
| Montreal | North America | -6 | -4 | bright |
| Mumbal | Asia | 21 | 30 | fine |
| New York | North America | 2 | 3 | snow |
| Paris | Europe | 5 | 7 | rain |
| Rio de Janeiro | South America | 21 | 38 | Cloudy |
| Santiago | South America | 11 | 29 | fine |
| Seoul | Asia | -3 | 9 | Cloudy |
| Sydney | Oceania | 25 | 29 | showers |
| Teharan | Asia | 3 | 11 | haze |
| Tokyo | Asia | 3 | 9 | fine |
| Toronto | North America | -6 | -2 | Cloudy |
| Vancouver | North America | -2 | 5 | fine |
For each of the following statements, select Yes if the statement is true based solely on the information reported for those cities on this day. Otherwise select No.
选项:
A、The mean maximum temperature for the cities in South America was greater than that for the cities in Oceania.
B、At least one city reporting fine weather had a maximum temperature less than 0 ℃.
C、For the Asian cities, the median minimum temperature was 12 ℃.
答案:
A B A
1答疑
[Problem Solving]
试题详情
题目：
How many integers from 0 to 50, inclusive, have a remainder of 1 when divided by 3 ?
选项:
A、15
B、16
C、17
D、18
E、19
答案:
C
1答疑
[Critical Reasoning]
试题详情
题目：
One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles from the bloodstream. Accordingly, entrepreneurs have begun selling at gymnasiums and health clubs bottles of drinking water, labeled "SuperOXY," that has extra oxygen dissolved in the water. Such water would be useless in improving physical performance, however, since the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs.
Which of the following, if true, would serve the same function in the argument as the statement in boldface?
选项:
A、the water lost in exercising can be replaced with ordinary tap water
B、the amount of oxygen in the blood of people who are exercising is already more than the muscle cells can absorb
C、world-class athletes turn in record performances without such water
D、frequent physical exercise increases the body's ability to take in and use oxygen
E、lack of oxygen is not the only factor limiting human physical performance
答案:
B
1答疑
[Data Sufficiency]
试题详情
题目：
Is 
?
?(1) 
(2) 
选项:
答案:
C
1答疑
[Problem Solving]
试题详情
题目：
The sum of the first n even, positive integers is 2 + 4 + 6 +…..+ 2 is n(n + 1).
What is the sum of the first 20 even, positive integers?
What is the sum of the first 20 even, positive integers?
选项:
A、120
B、188
C、362
D、406
E、420
答案:
E
0评分
1932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
5021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
5707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
1911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
4131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
2895浏览
0评分
1914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
2003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
427038浏览
0评分
434176浏览
