GRE-95及答案解析.doc

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1、GRE-95及答案解析(总分：57.00，做题时间：90 分钟)一、SECTION 1(总题数：21，分数：32.00)1.The water level in a tank is lowered by 6 inches, then raised by inches, and then lowered by 4 inches. If the water level was x inches before the changes in level, which of the following represents the water level, in inches, after the ch

2、anges?（分数：1.00）A.B.C.D.E.2.How many students 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.3. （分数：1.00）A.B.C.D.E.4.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

3、. 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 paint

4、ings 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.In the first two sentences of the passage, the author suggests which of the following?A. It is nearly impossible to determ

5、ine whether a painting is authentic or fake without the use of math.B. Even if multiple experts from various fields analyze a painting, it is not always possible to determine its authenticity.C. New discoveries in art always lead to a greater degree of truth.D. Art can be difficult to analyze, but m

6、athematical models can help to find the truth.E. Mathematicians have a great degree of expertise in analyzing art.（分数：1.00）A.B.C.D.E.In Rembrandts day, many of his fellow painters portrayed their characters much like the idealized gods of Greek and Roman mythology. Rembrandt differed by painting peo

7、ple in a more realistic and humble manner. He used himself, his family members, and even beggars as models. He viewed these individuals as being just as worthy of immortalization in art as mythological figures. He also fittingly enhanced his work by the use of chiaroscuro, a painting technique where

8、 light striking the foregrounded figures dramatically contrasts with a darkened background. Rembrandt reflected his paintings by remaining true to his singular artistic vision and casting his own light on the darkness of conformity.（分数：2.00）(1).The author of the passage is primarily concerned withA.

9、 defining the technical methods Rembrandt used in painting his various worksB. providing a brief memoir of Rembrandts motivations as a painterC. explaining how Rembrandt differentiated himself from other painters of his timeD. cataloging the individuals Rembrandt used as models in his worksE. contra

10、sting the works of contemporary painters to the works of Rembrandt（分数：1.00）A.B.C.D.E.(2).The passage supports which of the following statements about Rembrandt?A. Most of Rembrandts contemporaries avoided the use of humble models for their paintings.B. Rembrandt achieved enhanced artistic effect thr

11、ough the use of a unique method.C. Rembrandt saw artistic value in subject matter outside the mainstream.（分数：1.00）A.B.C.We had been anticipating this maiden voyage for a full nine months, since the initial purchase of 109 acres of northern, forested property. The property included a large, deep, som

12、ewhat murky pond that we were eager to investigate. In late April, the wait for decent weather was over, even though the sky still held intermittent steel gray clouds and the thermometer registered a mere 54. We could wait no longer; Bucks Pond was begging to be explored. Four adults and a precociou

13、s Golden Retriever gingerly climbed into the over-sized five-person canoe and, surprisingly, remained dry as the helmsman shoved us off the sandy launch. A bit of wind created ripples on the surface of the water, but we could only remark that this same breeze would be aiding us on our way back to sh

14、ore; there was no room for any negative thoughts to mar our excitement and enthusiasm for this long-awaited adventure.（分数：2.00）(1).The author implies that the journey across Bucks Pond wasA. relatively simple and required little exertionB. somewhat risky and uncertainC. difficult and required the st

15、rength of four adultsD. a disappointment to the four weary travelersE. undertaken during hazardous weather conditions（分数：1.00）A.B.C.D.E.(2).The passage indicates that the author would agree with which of the following statements?A. It is ill-advised to commence water explorations in winter.B. Ponds

16、are small bodies of water that are always easily traversed.C. New adventures are never a cause of excitement and enthusiasm.（分数：1.00）A.B.C.5.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 fron

17、tage. If （分数：1.00）A.B.C.D.E.6.For a project, a square piece of cloth is folded in half and sewed together to form a rectangle that has a perimeter of 36 centimeters. What was the area in square centimeters of the piece of cloth before it was folded?A. 16 B. 36 C. 81D. 108 E. 144（分数：1.00）A.B.C.D.E.7.

18、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, approximate

19、ly how many students scored above 600?A. 2,400 B. 4,800 C. 5.100D. 7,200 E. 9,600（分数：1.00）A.B.C.D.E.It sounds like the premise for a science fiction novel, but scientists are today developing a drug that could eliminate traumatic events from our memories. Thus far the research is focused on altering

20、 memories immediately following one particular type of trauma, car accidents, with promising results. But the potential applications of the research are far more wide reaching and morally ambiguous. On one hand, such a drug could provide a breakthrough in the treatment of post-traumatic stress disor

21、der in war veterans and rape victims. On the other hand, by relegating our memories to oblivion, such a drug could fundamentally change our sense of self and personal history. It is unclear how the human brain stores memories, and much is unknown about why painful memories of traumatic events come b

22、ack to haunt some and not others. But one thing is certain-as research into the technology of altering memories continues, so will the ethical debates on whether this pharmaceutical innovation falls outside the spectrum of appropriate medical interventions.（分数：4.00）(1).The main point of the passage

23、is toA. describe the premise of a science fiction novelB. propose a remedy for traumatic brain injuriesC. question certain medical researchD. admit to the failings of pharmaceutical innovationE. reject the concept of drug trials（分数：1.00）A.B.C.D.E.(2).Which of the following can be inferred from the p

24、assage regarding research into the memory-altering drug?A. It is currently applicable to many types of traumatic situations.B. Research is ongoing, and the treatment remains controversial.C. Our sense of self as well as our personal history is essentially static.（分数：1.00）A.B.C.(3).Select the sentenc

25、e that mentions a specific moral dilemma resulting from the use of a memory-altering drug.（分数：1.00）填空项 1:_(4).It can be inferred from the passage thatA. scientists have discovered a means by which human memories can be completely eliminatedB. only drugs that affect memory are morally ambiguousC. eth

26、ical debates are a predictable result of certain types of scientific research（分数：1.00）A.B.C.8.In 2000 Paul was twice as old as his brother Biko. In 2008 Pau I was only four years older than his brother. In what year was Biko born?A. 1990 B. 1992 C. 1996D. 1998 E. 2000（分数：1.00）A.B.C.D.E.9.If a and b

27、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. 140D.180 E.200（分数：1.00）A.B.C.D.E.（分数：2.00）(1).At the time during year X when the difference between the price of ABC common stock and the price of XYZ common stoc

28、k was at its greatest, the price of XYZ common stock was approximately what percent of the price of XYZ common stock and ABC common stock combined?A. 16% B. 30% C. 36%D. 42% E. 103%（分数：1.00）A.B.C.D.E.(2).At the time during year X when the aggregate price of ABC and XYZ stock was the greatest, the pr

29、ice of ABC stock was approximately what percent of the price of XYZ stock?A. 25 B. 60 C. 70D. 140 E. 170（分数：1.00）A.B.C.D.E.10.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 d

30、istribution 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. 5.100D. 7,200 E. 9,600（分数：1.00）A.B.C.D.E.11.Researchers at the Shimizu Institute in Japan believe it is possible to

31、 terraform Mars by making use of the planets 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 the

32、y 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 the components necessary for life.Which of the following, i

33、f true, would most weaken the experts theory as explained in the last two sentences?A. Martian mountains are well-situated 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 f

34、rozen atmosphere lacks the critical components necessary for life.D. Even if scientists could terraform Mars, the planet 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.12.The advertised rate for roaming charges

35、 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.13.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

36、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.14.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

37、has ten true-false questions, each worth 10 points. What is the probability his final average is more than 85?（分数：1.00）A.B.C.D.E.15.What is the average of four consecutive odd numbers starting with 2n+1?A. 4 B. 2n+3 C. 2n+4D. 2n+5 E. n+4（分数：1.00）A.B.C.D.E.It sounds like the premise for a science fic

38、tion novel, but scientists are today developing a drug that could eliminate traumatic events from our memories. Thus far the research is focused on altering memories immediately following one particular type of trauma, car accidents, with promising results. But the potential applications of the rese

39、arch are far more wide reaching and morally ambiguous. On one hand, such a drug could provide a breakthrough in the treatment of post-traumatic stress disorder in war veterans and rape victims. On the other hand, by relegating our memories to oblivion, such a drug could fundamentally change our sens

40、e of self and personal history. It is unclear how the human brain stores memories, and much is unknown about why painful memories of traumatic events come back to haunt some and not others. But one thing is certain-as research into the technology of altering memories continues, so will the ethical d

41、ebates on whether this pharmaceutical innovation falls outside the spectrum of appropriate medical interventions.（分数：4.00）(1).The main point of the passage is toA. describe the premise of a science fiction novelB. propose a remedy for traumatic brain injuriesC. question certain medical researchD. ad

42、mit to the failings of pharmaceutical innovationE. reject the concept of drug trials（分数：1.00）A.B.C.D.E.(2).Which of the following can be inferred from the passage regarding research into the memory-altering drug?A. It is currently applicable to many types of traumatic situations.B. Research is ongoi

43、ng, and the treatment remains controversial.C. Our sense of self as well as our personal history is essentially static.（分数：1.00）A.B.C.(3).Select the sentence that mentions a specific moral dilemma resulting from the use of a memory-altering drug.（分数：1.00）填空项 1:_(4).It can be inferred from the passag

44、e thatA. scientists have discovered a means by which human memories can be completely eliminatedB. only drugs that affect memory are morally ambiguousC. ethical debates are a predictable result of certain types of scientific research（分数：1.00）A.B.C.CORPORATE SUPPORT FOR THE ARTS BY SECTOR IN 1988 AND

45、 1991（分数：3.00）(1).Approximately how many million dollars more did the wholesale sector contribute to the arts in 1988 than in 19917A. 10.4 B. 12.6 C. 14.0D. 16.5 E. 19.2（分数：1.00）A.B.C.D.E.(2).From 1988 to 1991 which corporate sector decreased its support for the arts by the greatest dollar amount?A.

46、 Services B. ManufacturingC. Retail D. WholesaleE. Other（分数：1.00）A.B.C.D.E.(3).Of the retail sectors 1991 contribution to the arts, went to symphony orchestras and （分数：1.00）A.B.C.D.E.二、SECTION 2(总题数：11，分数：25.00)16.If A is 25 kilometers east of B, which is 12 kilo-meters south of C, which is 9 kilome

47、ters west of D, how far is it, in kilometers, from A to D?（分数：1.00）A.B.C.D.E.Directions: In the following questions, choose the best answer from the five choices listed.（分数：3.00）(1).If 80% of the adult population of a village is registered to vote, and 60% of those registered actually voted in a par

48、ticular election, what percent of the adults in the village did NOT vote in that election?A. 20B. 40C. 48D. 50E. 52（分数：1.00）A.B.C.D.E.(2).If of a number is 7 more than of the number, what is （分数：1.00）A.B.C.D.E.(3).An operation, *, is defined as follows: for any positive numbers a and b. （分数：1.00）A.B

49、.C.D.E.As concerns over mans 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 countrys 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