[Problem Solving]
试题详情
题目：
How many different 6-letter sequences are there that consist of 1 A,2 B's,and3 C's ?
选项:
A、 6
B、 60
C、 120
D、 360
E、 720
答案:
B
问答
1答疑
1答疑
[Reading Comprehension]
试题详情
题目：
Which of the following, if true, would most seriously undermine the author's basis for saying that Wulf overstates Quaker schools' impact?
选项:
A、The information that Wulf herself provided on religious affiliation and gender of students is in fact accurate.
B、Most poor, non-Quaker students enrolled in Quaker schools had completed one or two years' formal or informal schooling before enrolling.
C、Not all of the young women whose commonplace books contained copies of poetry critical of marriage were Quakers.
D、The poetry featured in young women's commonplace books frequently included allusions that were unlikely to be accessible to someone with only three years' study in school.
E、In 1765 an unusually large proportion of the Quaker schools' student body consisted of poor girls from non-Quaker backgrounds.
答案:
B
1答疑
[Problem Solving]
试题详情
题目：
For each student in a certain class, a teacher adjusted the student's test score using the formula y = 0.8x + 20, where x is the student's original test score and y is the student's adjusted test score. If the standard deviation of the original test scores of the students in the class was 20, what was the standard deviation of the adjusted test scores of the students in the class?
选项:
A、12
B、16
C、28
D、36
E、40
答案:
B
1答疑
[Problem Solving]
试题详情
题目：
If a company allocates 15 percent of its budget to advertising, 10 percent to capital improvements, and 55 percent to salaries, what fraction of its budget remains for other allocations?
选项:
A、4/5
B、3/5
C、3/10
D、1/5
E、1/10
答案:
D
1答疑
[Reading Comprehension]
试题详情
文章：
Many United States companies believe that the rising cost of employees' health care benefits has hurt the country's competitive position in the global market by raising production costs and thus increasing the prices of exported and domestically sold goods. As a result, these companies have shifted health care costs to employees in the form of wage deductions or high deductibles. This strategy, however, has actually hindered companies' competitiveness. For example, cost shifting threatens employees' health because many do not seek preventive screening. Also, labor relations have been damaged: the percentage of strikes in which health benefits were a major issue rose from 18 percent in 1986 to 78 percent in 1989.
Health care costs can be managed more effectively if companies intervene in the supply side of health care delivery just as they do with other key suppliers: strategies used to procure components necessary for production would work in procuring health care. For example, the make/buy decision--the decision whether to produce or purchase parts used in making a product--can be applied to health care. At one company, for example, employees receive health care at an on-site clinic maintained by the company. The clinic fosters morale, resulting in a low rate of employees leaving the company. Additionally, the company has constrained the growth of health care costs while expanding medical services.
题目：
The passage is primarily concerned with
选项:
A、providing support for a traditional theory
B、comparing several explanations for a problem
C、summarizing a well-known research study
D、recommending an alternative approach
E、criticizing the work of a researcher
答案:
D
1答疑
[Problem Solving]
试题详情
题目：
What is the remainder when 324 is divided by 5 ?
选项:
A、0
B、1
C、2
D、3
E、4
答案:
B
1答疑
[Critical Reasoning]
试题详情
题目：
Psychologist: In a survey, several hundred volunteers rated their own levels of self-control and their overall life satisfaction. The volunteers who rated themselves as having better self-control also reported greater satisfaction with their lives. This suggests that self-control is one factor that helps people avoid situations likely to produce dissatisfaction.
In order to assess the strength of the psychologist’s argument, it would be most helpful to know whether
选项:
A、people typically rate themselves as having significantly better self-control than expert psychological assessments would rate them as having
B、people's perceptions of how satisfied they are with their lives could be affected by factors of which they are unaware
C、there is a high level of self-control that tends to reduce overall life satisfaction
D、people's ratings of their overall satisfaction with their lives tend to temporarily decrease in situations likely to produce dissatisfaction
E、feelings of dissatisfaction significantly interfere with people’s ability to exercise self-control
答案:
E
1答疑
[Critical Reasoning]
试题详情
题目：
Hollywood restaurant is replacing some of its standard tables with tall tables and stools. The restaurant already fills every available seat during its operating hours, and the change in seating arrangements will not result in an increase in the restaurant's seating capacity. Nonetheless, the restaurant's management expects revenue to increase as a result of the seating change without any concurrent change in menu, prices, or operating hours.
Which of the following, if true, provides the best reason for the expectation?
Which of the following, if true, provides the best reason for the expectation?
选项:
A、One of the taller tables takes up less floor space than one of the standard tables.
B、Diners seated on stools typically do not linger over dinner as long as diners seated at standard tables.
C、Since the restaurant will replace only some of its standard tables, it can continue to accommodate customers who do not care for the taller tables.
D、Few diners are likely to avoid the restaurant because of the new seating arrangement.
E、The standard tables being replaced by tall tables would otherwise have to be replaced with new standard tables at a greater expense.
答案:
B
1答疑
[Critical Reasoning]
试题详情
题目：
Researchers in City X recently discovered low levels of several pharmaceutical drugs in public drinking water supplies. However, the researchers argued that the drugs in the water were not a significant public health hazard. They pointed out that the drug levels were so low that they could only be detected with the most recent technology, which suggested that the drugs may have already been present in the drinking water for decades, even though they have never had any discernible health effects.
Which of the following, if true, would most strengthen the researchers’ reasoning?
选项:
A、If a drug found in drinking water is not a significant public health hazard, then its presence in the water will not have any discernible health effects.
B、There is no need to remove low levels of pharmaceutical drugs from public drinking water unless they present a significant public health hazard.
C、Even if a substance in drinking water is a public health hazard, scientists may not have discerned which adverse health effects, if any, it has caused.
D、Researchers using older, less sensitive technology detected the same drugs several decades ago in the public drinking water of a neighboring town but could find no discernible health effects.
E、Samples of City X’s drinking water taken decades ago were tested with today’s most recent technology, and none of the pharmaceutical drugs were found.
答案:
D
1答疑
[Critical Reasoning]
试题详情
题目：
Situation: For five years the Souper restaurant chain has maintained rapid sales growth in Danport, primarily by opening new restaurants that draw patrons away from other restaurants in their vicinity.
Goal: Souper wishes to achieve continued rapid sales growth in Danport over the next two years.
Proposal for consideration: Continue to open new restaurants in Danport during the next two years at the same rate as in the last two years.
In light of the situation, which of the following, if true, most strongly argues that adopting the proposal would be an ineffective way of achieving the goal?
Goal: Souper wishes to achieve continued rapid sales growth in Danport over the next two years.
Proposal for consideration: Continue to open new restaurants in Danport during the next two years at the same rate as in the last two years.
In light of the situation, which of the following, if true, most strongly argues that adopting the proposal would be an ineffective way of achieving the goal?
选项:
A、At times at which customers find Souper restaurants too crowded, they often go to other restaurants nearby.
B、The Souper chain has generally opened new restaurants in locations that are in the vicinity of a large number of other restaurants.
C、Souper restaurants generally offer a much smaller variety of foods than many of the other restaurants in their vicinity.
D、Virtually all potential sites for new Souper restaurants in Danport are located in the vicinity of existing Souper restaurants.
E、Souper restaurants have always offered meals that are somewhat less expensive than meals at restaurants that compete with Souper for patrons.
答案:
D
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
5049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
5730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
4154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
428581浏览
0评分
435719浏览
