GRE-94_真题-无答案

GRE-94
(总分41,考试时间90分钟)
SECTION 1
1. At the time during year X when the difference between the price of **mon stock and the price of **mon stock was at its greatest, the price of XYZ common stock was approximately what percent of the price of **mon stock and **mon **bined?
A. 16%
B. 30%
C. 36%
D. 42%
E. 103%
2. At the time during year X when the aggregate price of ABC and XYZ stock was the greatest, the price of ABC stock was approximately what percent of the price of XYZ stock?
A. 25
B. 60
C. 70
D. 140
E. 170
3. When 9 students took a zoology quiz with a possible score of 0 to 10 inclusive, their average (arithmetic mean) score was 7.5. If a tenth student takes the same quiz, what will be the least
possible average score on the quiz for all 10 students?
A. 6.5
B. 6.75
C. 7.0
D. 7.25
E. 7.5
4. In a normal distribution, 68% of the scores lie within one standard deviation of the mean. If the SAT scores of all the high school juniors in Center City followed a normal distribution with a mean of 500 and a standard deviation of 100, and if 10,200 students scored between 400 and 500, approximately how many students scored above 600?
A. 2,400
B. 4,800
C. 5.100
D. 7,200
E. 9,600
Data from the lnternet Hockey database; salaries from Hockey Zone Plus.
5. In which season did Jagr earn the most money per game?
A. 1994-1995
B. 1995-1996
C. 1996-1997
D. 1997-1998
E. 1998-1999
6. In which season did Jagr average the most points per game?
A. 1990-1991
B. 1995-1996
C. 1996-1997
D. 1997-1998
E. 1998-1999
7. In a group of 100 students, more students are on the fencing team than are members of the French club. If 70 are in the club and 20 are neither on the team nor in the club, what, is the minimum number of students who could, be both on the team and in the club?
A. 10
B. 49
C. 50
D. 60
E. 61
8. In many Western European nations, the law is seen as rigid and not open to interpretation. This rigidity grants a consistency to questions of law that many would argue is absent in other, more flexible systems. The European construction of law provides litigants with a clear picture of how a case will be decided. All parties involved are certain how judges will rule on issues. It is simple--judges will strictly follow the law. This simple fact, that the law will not change from one situation to another, allows for court systems in Western Europe to process cases efficiently and cuts down on the amount of frivolous lawsuits. It is useless for an individual to attempt a case if he knows in advance that the law is not in his favor.
9. Dan drove home from college at an average rate of 60 miles per hour. On his trip back to college, his rate was 10 miles per hour slower and the trip took him one hour longer than the drive home. How far is Dan's home from the college?
A. 65 miles
B. 100 miles
C. 200 miles
D. 280 miles
E. 300 miles
10. If a and b are the lengths of the legs of a right triangle whose hypotenuse is 10 and whose area is 20,what is the value of (a +b.2?
A. 100
B. 120
C. 140
D.180
E.200
11. How many students are either juniors or males or both?
A. 678
B. 766
C. 948
D. 1,130
E. 1,312
Thousands, perhaps even millions, of people around the world are afflicted with a neurological condition called synesthesia. The word **es from the Greek words syn, which means "together," and aisthesis, which means "perception or sensation." Those affected by the disorder experience an involuntary, simultaneous joining of two senses; for example, some synesthetes--people with synesthesia-- perceive words as colors. Researchers do not know the causes of synesthesia, nor do they fully understand the mechanisms of the disorder. However, some scientists believe that synesthesia results from crossed connections in the brain; synapses that are traditionally associated with one sensory system have somehow crossed over into another sensory system, which leads to a juxtaposition of two, typically unrelated senses. Synesthetic perceptions are idiosyncratic, and are as varied as the perceivers themselves. Theoretically, the number of types of synesthesia is bound only by the sensory pairings themselves, such as the color/sound pairing mentioned previously. Researchers estimate that there could be as many as 35 different broad pairings-- sound/touch, taste/hearing, and so on--each characterized by many permutations and unique features. Indeed the variations could be endless, with each synesthete perceiving a slightly different color or sensation, for example. Although the perceptions vary among individuals, according to Dr. Richard Cytowic, a leading synesthesia expert, the lifelong inter-sensory associations of the synesthetes remain stable, no matter what senses are joined in a given synesthete.
12. The primary purpose of the passage is to
A. describe a medical condition that might be difficult to recognize even though it is clearly defined
B. propose a radical new treatment for a medical condition that was once thought untreatable
C. question the accuracy of the current definition of a well-known medical condition
D. reject one explanation of a complex phenomenon in favor of another
E. admit several weaknesses in the current theoretical approach to a complex medical condition
13. Select the sentence that best describes the scope of the sensory disorder.
14. According to the passage, each of the following statements regarding synesthesia is true EXCEPT
A. researchers have not yet fully explained the mechanisms behind synesthesia
B. synesthetic perceptions are unique to the individual synesthete
C. the term 'synesthesia' derives from a combination of Greek root words
D. the various permutations of synesthesia suggest that individuals experience shifting inter-sensory associations
E. researchers have so far failed to catalog all of the various sensory pairings experienced by synesthetes
15. In a group of 80 students, 24 are enrolled in geometry, 40 in biology, and 20 in both. If a student were randomly selected from the 80 students, what is the probability that the student selected would not be enrolled in either course?
A. 0.20
B. 0.25
C. 0.45
D. 0.55
E. 0.60
16. In the world of art, distinguishing the authentic piece from the forgery is not an easy feat and often requires the use of multiple experts. Millions of dollars can be at stake, yet even experts can be fooled. However, a recent discovery has introduced a new resource for galleries and other groups seeking to establish the origins of their paintings: mathematicians. Math experts were able to analyze digital images of authenticated paintings where they found consistent differences in paint texture. This consistency suggests that each artist has a unique style of brush stroke that cannot be completely duplicated.
17. Josh works on the second floor of a building. There are 10 doors to the building and 8 staircases from the first to the second floor. Josh decided that each day he would enter by one door and leave by a different one, and go up one staircase and down another. How many days could Josh do this before he had to repeat a path he had previously taken?
A. 80
B. 640
C. 800
D. 5040
E. 6400
18. What is the average of four consecutive odd numbers starting with 2n+1?
A. 4
B. 2n+3
C. 2n+4
D. 2n+5
E. n+4
19. Researchers at the Shimizu Institute in Japan believe it is possible to terraform Mars by making use of the planet's own resources and by introducing genetically altered life from Earth. They hope these actions will speed up the terraforming process, not just by adapting Mars to support Earth-life, but also by adapting Earthlife to exist on Mars. These experts think they can use the Martian geology itself to jump-start the planet. The theory is that detonation of
thermonuclear devices deep in the Martian mountains will trigger eruptions of hot magma that would melt the frozen atmosphere, thereby releasing **ponents necessary for life.
20. The average (arithmetic mean) number of trees per acre in a 40-acre plot is 140. If a 10-acre section of the plot contains 90 trees per acre, how many trees are there in the remaining 30 acres?
A. 5,700
B. 4,700
C. 4,200
D. 3,600
E. 2,700
SECTION 2
As concerns over man's impact on the global environment increase, many interesting innovations are being considered. For example, "green roofs" - plant-filled roof top gardens - are one substantial way to confront the country's ecological problems, and there seems to be very little in the way of a downside. For one thing, a green roof acts as a sponge for rainwater, absorbing the majority of water from a typical rainstorm. Only three to five inches of soil for a green roof is sufficient for this to occur, which keeps the weight of the roof to a minimum. Because the plantings on the roof absorb the rainwater, drainage and sewage systems have a decreased volume of water pumping through them, keeping these systems from becoming over-stressed. And while, the soil and plants are absorbing rainwater, they are also taking in pollutants for their own nourishment by storing carbon and then emitting necessary oxygen back into the atmosphere.
21. The second and third sentences are characterized, respectively, by
A. warning and justification
B. generalization and specification
C. invocation and definition
D. authority and reverence
E. confession and resolution
22. The author's main point in the passage is that
A. green roofs are expensive to install and maintain
B. green roofs are both innovative and eco-friendly
C. global warming concerns have led to many new inventions
D. plant-filled roof gardens emit oxygen into the atmosphere
E. green roofs are the definitive cure for global warming
23. The author references the absorption capabilities of green roofs primarily in order to illustrate
A. a preoccupation with style over design practicality
B. the inefficiencies of installing plantings to a building's roof
C. how green roofs lead to more efficient and less-stressed home systems
D. the increased public interest in environmental friendliness in the construction industry
E. how global warming has accelerated society's interest in environmentally friendly structures
24. If A is the point (-4, 1) and B is the point (2, 1), what is the area of the circle which has AB as
a diameter?
A. 3π
B. 6π
C. 9π
D. 12π
E. 36π
25. In 1980, the cost ofp pounds of potatoes was d dollars. In 1990, the cost of 2p pounds of potatoes was dollars. By what percent did the price of potatoes decrease from 1980 to 1990?
A. 25%
B. 50%
C. 75%
D. 100%
E. 400%
Scientists believe that by raising atmospheric pressure and surface temperature, it is possible to transform the climate of Mars to the point where humans would be able to live there. The process by which a hostile or unsuitable environment is transformed into one that can sustain human life is called terraforming. In addition to potentially providing an alternate home for the people of Earth in the future, this undertaking may also allow scientists to test hypotheses about the process of global warming, which is a highly pertinent issue affecting our planet today.
26. Which of the following can be inferred from the passage regarding the Martian atmosphere?
A. It has a lower pressure than Earth's atmosphere.
B. It has a higher surface temperature than Earth.
C. It can most certainly be transformed to be more like Earth's atmosphere.
27. The passage addresses which of the following consequences of terraforming?
A. The creation of a more hospitable planet.
B. The risk of overpopulation.
C. The elimination of suitable environments.
D. The depletion of the atmosphere.
E. The production of greenhouse gases.
28. For any numbers a, b, and c,
For which of the following equations is it true that there is exactly one positive integer that satisfies it'?
A. none
B. Ⅰ only
C. Ⅲ only
D. Ⅰ and Ⅲ only
E. Ⅰ, Ⅱ, and Ⅲ
29. Thousands of years ago, royalty of diverse cultures were often buried in extremely lavish tombs that they **missioned in preparation for their inevitable deaths. About 2,200 years ago, a Chinese emperor named Qin Shihuang had such a tomb prepared. At the age of thirteen, Qin Shihuang had succeeded his father as emperor. The boy was very aggressive and ambitious. He assumed full power at the age of 22 by ridding himself of his rival, a man who had controlled the throne while Qin Shihuang was a minor. Qin Shihuang's goal was to unify and subjugate all of the Chinese states using his powerful political, economic, and military strength. Despite an ongoing quest for immortality, Qin Shihuang died while traveling at the age of 49. Although he has been dead for centuries, historians can continue to learn of his life by studying the artifacts found in the extravagant tomb in which he was laid to rest.
Directions: In the following questions, choose the best answer from the five choices listed.
30. The Center City Little League is divided into d divisions. Each division has t teams, and each team has p players. How many players are there in the entire league?
31. A number x is chosen at random from the set of positive integers less than 10. What is the probability that ?
32.
33. If the average (arithmetic mean) of 10, 20, 30, 40, and x is 60, what is the value of x?
A. 50
B. 60
C. 100
D. 150
E. 200
Total enrollment in higher education institutions, by control
and type of institution: Fall 1972-95
34. In 1995 the number of students enrolled in public institutions of higher education was approximately how many times the number of students enrolled in private institutions of higher education?
A. 2
B. 2.5
C. 3
D. 3.5
E. 4
35. If the total enrollment in institutions of higher education in 1972 was 5,000,000. approximately how many students were enrolled in private 4-year institutions in 1995?
A. 1,000,000
B. 1,100,000
C. 1,250,000
D. 1,500,000
E. 1,650,000
36. If a is increased by 10% and b is decreased by 10%, the resulting numbers will be equal. What is the ratio of a to b?
37. Paul drove m miles in h hours; Michelle drove the same distance in an hour less. How fast, in miles per hour, did Michelle drive?
38. For how many positive integers m ≤ 100 is (m -5)(m -45) positive?
A. 45
B. 50
C. 58
D. 59
E. 60
39. In 1979, Margaret Thatcher became Prime Minister of Great Britain. Her accession was one of the most important steps in finally making the Chunnel a reality. Thatcher had made it part of her political platform, finally giving the project full political weight. Still, it was not until two years later, when Thatcher met with French President Francois Mitterand for one of their routine economic meetings, that she and he organized a committee to take a new and serious look at building the Chunnel. Both political leaders felt that the underwater tunnel would be advantageous to their respective countries by bringing important financial support to local businesses as well as providing jobs to counteract growing unemployment. Both Thatcher and Mitterand also knew that it would enhance their image worldwide and leave behind a legacy of their respective times in office.
Average expected family contribution (EFC) for dependent students,
by family income: Academic year 1995-96
40. A family's unmet need (which must be covered by a financial aid package. is defined to be the total cost of attending an institution of higher education minus the expected family contribution. What is the unmet need of a family whose income is $55,000 and who has a child attending a 4-year public university?
A. $700
B. $3300
C. $6800
D. $7500
E. $12,500
41. If family A has an income of $95,000 per year, and family B has an income of $35,000 per year, and each has a child attending a 4-year public university, to the nearest $1000, how much more would family A be expected to pay than family B?
A. $4000
B. $7000
C. $10,000
D. $12,000
E. $15,000。