[Problem Solving]
试题详情
题目：
In the xy-plane, line n passes through the origin and has slope 4. If points (1, c) and (d, 2) are on line n, what is the value of $$frac{c}{d}$$?
选项:
A、 0.25
B、 0.5
C、 2
D、 4
E、 8
答案:
E
问答
1答疑
1答疑
[Problem Solving]
试题详情
题目：
A certain company retirement plan has a "rule of 70" provision that allows an employee to retire when the employee's age plus years of employment with the company total at least 70. In what year could a female employee hired In 1986 on her 32nd birthday first be eligible to retire under this provision?
选项:
A、 2003
B、 2004
C、 2005
D、 2006
E、 2007
答案:
C
1答疑
[Reading Comprehension]
试题详情
题目：
According to the passage, Tucci and Talaga found that service guarantees, when offered by lower-priced restaurants, can have which of the following effects?
选项:
A、Customers’ developing unreasonably high expectations regarding service
B、Customers’ avoiding such restaurants because they fear that the service guarantee may not be fully honored
C、Customers’ interpreting the service guarantee as a sign that management is not confident about the quality of its service
D、A restaurant’s becoming concerned that its service will not be assiduous enough to satisfy customers
E、A restaurant’s becoming concerned that customers will be more emboldened to question the quality of the service they receive
答案:
C
1答疑
[Data Sufficiency]
试题详情
题目：
If J, S, and V are points on the number line, what is the distance between S and V?
(1) The distance between J and S is 20.
(2) The distance between J and V is 25.
选项:
答案:
E
1答疑
[Critical Reasoning]
试题详情
题目：
Plant scientists have used genetic engineering on seeds to produce crop plants that are highly resistant to insect damage. Unfortunately, the seeds themselves are quite expensive, and the plants require more fertilizer and water to grow well than normal ones. Thus, for most farmers the savings on pesticides would not compensate for the higher seed costs and the cost of additional fertilizer. However, since consumer demand for grains, fruits, and vegetables grown without the use of pesticides continues to rise, the use of genetically engineered seeds of this kind is likely to become widespread.
In the argument given, the two portions in boldface play which of the following roles?
In the argument given, the two portions in boldface play which of the following roles?
选项:
A、The first supplies a context for the argument; the second is the argument's main conclusion.
B、The first introduces a development that the argument predicts will have a certain outcome; the second is a state of affairs that the argument denies will be part of that outcome.
C、The first presents a development that the argument predicts will have a certain outcome; the second acknowledges a consideration that weighs against that prediction.
D、The first provides evidence to support a prediction that the argument seeks to defend; the second is that prediction.
E、The first and the second each provide evidence to support the argument's main conclusion.
答案:
C
1答疑
[Issue Essay]
试题详情
题目：
Read the statement and the instructions that follow it, and then make any notes that will help you plan your response. Begin typing your response in the box at the bottom of the screen.
"You can tell the ideas of a nation by its advertisements."
Explain what you think this quotation means and discuss the extent to which you agree or disagree with it. Develop your position with reasons and/or specific examples drawn from history, current events, w your own experience, observations, or reading.
"You can tell the ideas of a nation by its advertisements."
Explain what you think this quotation means and discuss the extent to which you agree or disagree with it. Develop your position with reasons and/or specific examples drawn from history, current events, w your own experience, observations, or reading.
选项:
答案:
1答疑
[Data Sufficiency]
试题详情
题目：
For each positive integer k, let . Is the product a1a2 . . . an an integer?
- n + 1 is a multiple of 3.
- n is a multiple of 2.
选项:
A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are NOT sufficient.
答案:
B
1答疑
[Critical Reasoning]
试题详情
题目：
A fossil recently discovered in Marlandia, a chain of islands, proves that a present-day reptile indigenous to Marlandia is descended from an ancient reptile species that lived on the islands millions of years ago. The finding is surprising since the ancestral species was thought to have become extinct when Marlandia was submerged in a global sea-level rise twenty-five million years ago. Based on the new discovery, many scientists have concluded that the sea-level rise in question left at least part of Marlandia unsubmerged.
Which of the following would, if true, provide the most additional support for the scientists' conclusion?
选项:
A、Reptiles in Marlandia have adapted to many environmental changes since the sea-level rise.
B、Marlandia separated from a much larger landmass about eighty million years ago.
C、No fossils that prove the relationship between the present-day species and the ancestral species have been found anywhere other than Marlandia.
D、The present-day reptiles are able to thrive on very tiny Marlandia islands.
E、The ancestral reptiles could not have survived long at sea.
答案:
E
1答疑
[Data Sufficiency]
试题详情
题目：
What is the total number of coins that Bert and Claire have?
(1) Bert has 50 percent more coins than Claire.
(2) The total number of coins that Bert and Claire have is between 21 and 28.
(1) Bert has 50 percent more coins than Claire.
(2) The total number of coins that Bert and Claire have is between 21 and 28.
选项:
答案:
C
1答疑
[Problem Solving]
试题详情
题目：
If C is the temperature in degrees Celsius and F is the temperature in degrees Fahrenheit, then the relationship between temperatures on the two scales is expressed by the equation 9C = 5(F – 32). On a day when the temperature extremes recorded at a certain weather station differed by 45 degrees on the Fahrenheit scale, by how many degrees did the temperature extremes differ on the Celsius scale?
选项:
A、
B、13
C、25
D、45
E、81
答案:
C
0评分
1154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
3289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
3639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
1211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
2776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
1902浏览
0评分
1220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
1286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
304515浏览
0评分
311641浏览
