GRE-96及答案解析.doc

1、GRE-96及答案解析(总分：41.00，做题时间：90 分钟)一、SECTION 1(总题数：24，分数：25.00)1.If the circumference of the circle above is 16, and if the length of AC equals the length of BD, what is the length of AC?A. B.16 C. （分数：1.00）A.B.C.D.E.2.In a crate of fruit that contained strawberries, blueberries, and raspberries, the r

2、atio of the number of pints of strawberries to the number of pints of blueberries to the number of pints of raspberries was 6 to 4 to 5, respectively. If the crate contained a total of 45 pints of these fruits, how many more pints of strawberries than blueberries were there in the crate?A. 2 B. 3 C.

3、 4D. 5 E. 6（分数：1.00）A.B.C.D.E.3.A certain doctor suggests that an individuals daily water intake be ounce per pound of body weight plus 8 ounces for every 25 pounds by which the individual exceeds his or her ideal weight. If this doctor suggests a daily water intake of 136 ounces for a particular 24

4、0-pound individual, how many pounds above his or her ideal weight is that individual?A. （分数：1.00）A.B.C.D.E.4.Researchers at the Shimizu Institute in Japan believe it is possible to terraform Mars by making use of the planets own resources and by introducing genetically altered life from Earth. They

5、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 de

6、ep in the Martian mountains will trigger eruptions of hot magma that would melt the frozen atmosphere, thereby releasing the components necessary for life.Which of the following, if true, would most weaken the experts theory as explained in the last two sentences?A. Martian mountains are well-situat

7、ed and easily accessible by remote mobility devices.B. Similar eruptions of magma on Earth have demonstrated the ability to enable life in hostile underwater environments.C. Mars frozen atmosphere lacks the critical components necessary for life.D. Even if scientists could terraform Mars, the planet

8、 would eventually have all the same problems as Earth.E. Thermonuclear devices would be very dangerous to send to Mars.（分数：1.00）A.B.C.D.E.For generations, Native Americans used myths and legends to explain the mysterious world around them. One such etiological myth originated with the Cherokee. Acco

9、rding to the tale, at one time, far in the past, animals, birds, fishes, and even insects were able to communicate with one another. When humans arrived, however, life became more difficult because the creatures habitats began to shrink. In order to protect themselves, the creatures decided to intro

10、duce disease to humans. The plant world, however, took sympathy upon the Cherokee and so provided a remedy for each of the diseases created by the creatures. It was because of this, says the legend, that the Cherokee turned to plants for antidotes and medicines for illness.（分数：2.00）(1).Which of the

11、following describes the organization of the passage?A. The author defines a theory then illustrates its workings.B. The author argues for one side then presents a counterargument.C. The author defends an early explanation of aboriginal medical practices.D. The author introduces a subject then gives

12、an example of it.E. The author compares two versions of a creation myth to determine which is the original.（分数：1.00）A.B.C.D.E.(2).The author mentions etiological myth probably in order toA. cast aspersion on Cherokee legendsB. give the academic designation for legends that explain practices or event

13、sC. show how animals were thought by the Cherokee to be able to communicate with each other（分数：1.00）A.B.C.5.Researchers at the Shimizu Institute in Japan believe it is possible to terraform Mars by making use of the planets own resources and by introducing genetically altered life from Earth. They h

14、ope 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 dee

15、p in the Martian mountains will trigger eruptions of hot magma that would melt the frozen atmosphere, thereby releasing the components necessary for life.Which of the following, if true, would most weaken the experts theory as explained in the last two sentences?A. Martian mountains are well-situate

16、d and easily accessible by remote mobility devices.B. Similar eruptions of magma on Earth have demonstrated the ability to enable life in hostile underwater environments.C. Mars frozen atmosphere lacks the critical components necessary for life.D. Even if scientists could terraform Mars, the planet

17、would eventually have all the same problems as Earth.E. Thermonuclear devices would be very dangerous to send to Mars.（分数：1.00）A.B.C.D.E.6.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

18、 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

19、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.In the passage, the auth

20、or is primarily concerned withA. arguing for a universal application of Western European legal practicesB. decrying the rigidity and constancy of Western European legal practicesC. describing the potential benefits of Western European legal systemsD. defining the pros and cons of various legal syste

21、msE. denouncing European law for its anti-consumer bias（分数：1.00）A.B.C.D.E.7.If x+y=16, and if x2-y2=48, then x -y=A. 3 B. 4 C. 6D. 32 E. 36（分数：1.00）A.B.C.D.E.8.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 neit

22、her 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. 50D. 60 E. 61（分数：1.00）A.B.C.D.E.9.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

23、A. 100 B. 120 C. 140D.180 E.200（分数：1.00）A.B.C.D.E.10.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

24、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. 800D. 5040 E. 6400（分数：1.00）A.B.C.D.E.11.Which of the following sets of numbers has the greatest standard deviation?A. 2, 3, 4 B. 2.5, 3, 3.5C. 1, 1.25, 1.5 D. -2, 0, 2E. -20, 21, 21.

25、5（分数：1.00）A.B.C.D.E.12.A developer has land that has x feet of lake frontage. The land is to be subdivided into lots, each of which is to have either 80 feet or 100 feet of lake frontage. If （分数：1.00）A.B.C.D.E.13.If x+y=16, and if x2-y2=48, then x -y=A. 3 B. 4 C. 6D. 32 E. 36（分数：1.00）A.B.C.D.E.14.In

26、 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

27、 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 a

28、mount 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.In the passage, the author is primarily concerned withA. arguing for a universal application of Western European legal practicesB. decrying the rigidity and constanc

29、y of Western European legal practicesC. describing the potential benefits of Western European legal systemsD. defining the pros and cons of various legal systemsE. denouncing European law for its anti-consumer bias（分数：1.00）A.B.C.D.E.15.When 9 students took a zoology quiz with a possible score of 0 t

30、o 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. 7.0D. 7.25 E. 7.5（分数：1.00）A.B.C.D.E.16.Which of the following is an equation of a line that is perpen

31、dicular to the line whose equation is 2x+3y=4?Indicate all such equations.A. 3x+2y=4 B. 3x-2y=4C. 2x-3y=4 D. 4-3x=-2yE. 4+2x=3y（分数：1.00）A.B.C.D.E.17.An investor wants to sell some of the stock that he owns in Micro Tron and Dynaco Corporations. He can sell Micro Tron stock for $ 36 per share, and he

32、 can sell Dynaco stock for $ 52 per share. If he sells 300 shares altogether at an average price per share of $40, how many shares of Dynaco stock has he sold?A. 52 B. 75 C. 92D. 136 E. 184（分数：1.00）A.B.C.D.E.18.Two buses are 515 miles apart. At 9:30 a. m., they start traveling toward each other at r

33、ates of 48 and 55 miles per hour. At what time will they pass each other?A. 1:30 p.m. B. 2:00 p.m.C. 2:30 p.m. D. 3:00 p.m.E. 3:30 p. m.（分数：1.00）A.B.C.D.E.19.If the radius of a circular region were decreased by 20 percent, the area of the circular region would decrease by what percent?A. 16% B. 20%

34、C. 36%D. 40% E. 44%（分数：1.00）A.B.C.D.E.20.Two competitors battle each other in each match of a tournament with nine participants. What is the minimum number of matches that must occur for every competitor to battle every other competitor?A. 27 B. 36 C. 45D. 64 E. 81（分数：1.00）A.B.C.D.E.21.How many stud

35、ents are either juniors or males or both?A. 678 B. 766 C. 948D. 1,130 E. 1,312（分数：1.00）A.B.C.D.E.22.George earned 80, 85 and 90 on the first three tests in his geography class. Because he didnt have time to study, he decides to guess randomly on the final test. That test has ten true-false questions

36、 each worth 10 points. What is the probability his final average is more than 85?（分数：1.00）A.B.C.D.E.23.The advertised rate for roaming charges is 0. 002 cents per second. What is that in dollars per hour?A. 7.2 B. 2 C. 0.72D. 0.2 E. 0.072（分数：1.00）A.B.C.D.E.二、SECTION 2(总题数：12，分数：16.00)24.Human fasci

37、nation with space began hundreds of years ago. That interest has not waned, and today, the Hubble Telescope orbits 375 miles above Earth, working nonstop to unlock the secrets of the universe. The Hubble uses state-of-the-art instruments to provide amazing views of the universe that cannot be matche

38、d by ground-based telescopes. The reason for this is that, from the ground, we look at stars and other objects in space through Earths atmosphere. Our atmosphere is full of clouds, dust, and pollution, which cause everything we see to shimmer and shake. This effect creates difficulty for scientists

39、on the ground to make steady, accurate measurements of objects moving in space. With assistance from the Hubble Telescope, astronomers can pinpoint the location of faraway stars and galaxies, and measure the speeds and distances of astronomical objects with far greater precision. Astronomers may eve

40、n one day tell us exactly when the universe began.The author suggests that “steady, accurate measurements“ can be difficult to attain becauseA. scientists frequently introduce unnecessary complications to simple situationsB. Earth-based telescopes are insufficiently precise due to atmospheric dust a

41、nd pollutionC. due to Earths constant rotation, it is nearly impossible to pinpoint exact distances in outer spaceD. most telescopes require regular repair missions when their cameras arent functioning properlyE. astronomers are not yet able to tell us exactly when the universe began（分数：1.00）A.B.C.D

42、E.Average expected family contribution (EFC) for dependent students,by family income: Academic year 1995-96（分数：2.00）(1).A familys 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 c

43、ontribution. 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. $700B. $3300C. $6800D. $7500E. $12,500（分数：1.00）A.B.C.D.E.(2).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

44、 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. $4000B. $7000C. $10,000D. $12,000E. $15,000（分数：1.00）A.B.C.D.E.25.Making snow angels usually falls under the category of childrens winter recreation, but in early 2007

45、 the process took on a whole new meaning. Almost 9,000 people gathered on the state Capitol grounds in Bismarck, North Dakota, to set a new worlds record for the most people making snow angels at one time. They were determined to break Michigans record of 3,784. Participants ranged from families wi

46、th children to snowplow drivers. One woman was there to mark her 99th birthday! Kids of all ages flapped their arms in the snow and a young baby even made a snow angel by having her car seat spun in circles.In the context in which it appears, “mark“ most nearly meansA. memorializeB. rememberC. ident

47、ifyD. defineE. celebrate（分数：1.00）A.B.C.D.E.Although it is almost always taken for granted, sleep is an essential part of most creatures lives. For giraffes, two hours a day is enough. For bats, however, that number is closer to 20! For human adults, the need averages between seven and eight hours a

48、night, and if they do not get it, they can suffer in their ability to concentrate and to think logically. While humans sleep, a number of things occur. First, their bodies are resting and reenergizing for the next day. Second, their brains are sorting through information and retaining some details w

49、hile discarding others. Some experts believe this process helps to strengthen individuals memories. Third, humans dream.Dreams have lent an ineffable quality to sleep. While modern scientists believe that dreams are the brains method for sifting through lifes daily events, this was not always the case. Long ago, philosophers and sages gave prophetic significance to dreams. Even the ever-practical ancient Romans thought that dreams could be messages sent directly from one of their gods.（分数：2.00）(1).Select the sentence within the passage that illustrates a possible minimum