GRE-72及答案解析.doc

1、GRE-72及答案解析(总分：58.00，做题时间：90 分钟)一、SECTION 3(总题数：25，分数：30.00)1.I put a bandage on the childs finger to _ the flow of blood from his cut. (A) irrigate (B) expose (C) stanch (D) pluck (E) obviate（分数：1.00）A.B.C.D.E.2.INSIPID: (A) vivacious (B) articulate (C) adamant (D) dull (E) indecisive（分数：1.00）A.B.C

2、D.E.3.PRAGMATIC: (A) ample (B) sensible (C) impractical (D) astute (E) exiguous（分数：1.00）A.B.C.D.E.4.OBTUSE: (A) substantial (B) trivial (C) immense (D) perceptive (E) dense（分数：1.00）A.B.C.D.E.5.TRACTABLE: (A) unruly (B) phlegmatic (C) acquiescent (D) distant (E) artful（分数：1.00）A.B.C.D.E.6.Chriss int

3、erest in his action-figure collection began to _ as he completed elementary school and became a preteen; he was growing up. (A) improve (B) dilate (C) exist (D) wane (E) thrive（分数：1.00）A.B.C.D.E.7.INUNDATE : OVERWHELM : (A) lambaste : beat (B) extricate : tangle (C) extol : criticize (D) redo : expu

4、nge (E) fathom : declare（分数：1.00）A.B.C.D.E.8.SQUELCH: (A) pilfer (B) amplify (C) gleam (D) suppress (E) quench（分数：1.00）A.B.C.D.E.The polar lights known as auroras are produced when charged subatomicLine particles, such as protons and electrons flowing from the sun through Earthsmagnetosphere, collid

5、e with atoms and molecules in Earths upper atmosphere.For reasons not entirely understood, magnetic storms, called substorms,(5) occasionally occur where the flow of particles greatly increases and theinterplanetary magnetic field becomes much stronger. These substorms are frequentlyvisible on the E

6、arth because they increase the intensity of the polar lights.Recently, five identical probes were blasted into orbit in a $200 million USproject known as the THEMIS mission. Scientists hope the probes will be able to(10) investigate a number of mysteries about the nature of the substorm instabilitie

7、s,including when and where substorms begin, how the individual componentsof the substorm interact, and how substorms power the auroras. The missionssecondary objectives involve understanding and predicting variations in the fluxof electrons in Earths outer radiation belt. These electrons pose a haza

8、rd to the(15) safety of both astronauts and spacecraft. Understanding substorm instabilitieswould thus improve success rates of future space missions.（分数：2.00）(1).The main purpose of the passage is to（分数：1.00）A.explain why it is important to invest in space researchB.explain how magnetic substorms i

9、nterfere with satellite communicationsC.define magnetic substorms and identify a recent scientific experiment to study themD.compare two alternative approaches to the study of magnetic substormsE.(E) demonstrate that unmanned probes are the best way to conduct research in space(2).According to the p

10、assage, all of the following are objectives of the THEMIS mission EXCEPT:（分数：1.00）A.predicting variations in the flux of electrons in Earths outer radiation beltB.understanding how individual components of the substorm interactC.guaranteeing the success rates of future space missionsD.investigating

11、when and where substorms beginE.(E) understanding how substorms power the auroras9.NOXIOUS: (A) salubrious (B) deleterious (C) deficient (D) complete (E) egregious（分数：1.00）A.B.C.D.E.10.Both discipline-based and affection-based parenting methods stand the chance of undermining their own assumptions:

12、Overreliance on external discipline through punishment may (i) _ the childs independent moral development, while an overly (ii) _ parenting style may provide the child with the false impression that no one elses needs matter./r/n /r/n /r/n Blank(i) Blank(ii) /r/n /r/n /r/n /r/n obstreperousocclude /

13、r/n /r/n /r/n anticipate/r/n indulgent/r/n /r/n /r/n repudiate/r/n lachrymose/r/n /r/n /r/n /r/n /r/n （分数：1.00）填空项 1:_11.FECKLESS : PURPOSE : (A) constant : habit (B) eccentric : convention (C) inherent : attribute (D) innate : possession (E) inimical : harm（分数：1.00）A.B.C.D.E.12.QUOTIDIAN: (A) circa

14、dian (B) sporadic (C) stark (D) adverse (E) exotic（分数：1.00）A.B.C.D.E.Modern science fiction movies are often known for their breathtaking specialLine effects. These effects can show us a glimpse of the future, and frequently havetremendous dramatic force. Sometimes, however, special effects can leav

15、e thescience behind to focus only on the fiction. One of the worst offenders is a films(5) depiction of explosions in outer space.On the Earth, explosions occur in some form of matter, usually air or water.The change in energy level in the matter creates the energy differential known asa shock wave.

16、 The wave is what creates the characteristic “boom“ of an explosion.Since there is very little matter in outer space, the energy transfer never takes(10) place. Consequently, there is no sound. Further, because air and water are notperfect conduits for energy, they measurably slow the travel of the

17、explosiveforce. This allows the explosion to unfold in relatively slow motion, whichrenders it visible to the eye. In space, there is nothing to slow the energy, whichwould disperse almost immediately. The effect for an observer would be a bright(15) flash, gone almost as soon as it appeared, and no

18、thing like the great billowingspace clouds shown in the movies, suggesting that reality is insufficientlydramatic for cinematic representation.（分数：2.00）(1).The authors argument is developed primarily by the use of（分数：1.00）A.an attack on the misuse of scientific discoveries by modern film directorsB.

19、a critique of technical developments in science fiction movie special effectsC.an example of how science fiction directors distort science to increase dramatic effectD.an analogy between science fiction movie special effect and science education in schoolsE.(E) a warning against an overreliance on f

20、ilms to teach science to youngsters(2).According to the passage, which of the following is true about explosions in space?I. A lack of matter in space allows the energy from an explosion to travel very quickly.II. An explosion in space would be visible as a flash of bright light.III. Shock waves cre

21、ated by an explosion in space would cause an audible “boom.“（分数：1.00）A.I onlyB.II onlyC.I and II onlyD.II and HI onlyE.(E) I, II, and III13.HACKNEYED : ORIGINAL : (A) fatuous : intelligent (B) incongruous : impossible (C) careless : inadvertent (D) threatening : forceful (E) beginning : inchoate（分数：

22、1.00）A.B.C.D.E.14.France and Spain, while actually very _ , share a common reputation for a more _ way of life than that experienced by the average harried American. (A) similar tranquil (B) genteel guarded (C) informal substantial (D) dissimilar serene (E) diverse traditional（分数：1.00）A.B.C.D.E.15.B

23、ANAL : ZEST : (A) fortuitous : grace (B) garrulous : speech (C) gregarious : money (D) grievous : sincerity (E) incongruous : harmony（分数：1.00）A.B.C.D.E.16.PROPAGATE : MULTIPLY : (A) dilate : decrease (B) discern : include (C) expect : shift (D) precipitate : happen (E) deride : excel（分数：1.00）A.B.C.D

24、E.17.IRASCIBLE : ANGERED : (A) exigent : ignoble (B) docile : trained (C) exceptional : uncommon (D) ethical : mistreated (E) estimable : offended（分数：1.00）A.B.C.D.E.18.VENERABLE: (A) aged (B) esteemed (C) forgotten (D) disreputable (E) noble（分数：1.00）A.B.C.D.E.19.PILOT : JET : (A) actor : state (B)

25、gate : prison (C) physician : health (D) fence : landscape (E) conductor : orchestra（分数：1.00）A.B.C.D.E.Despite the ubiquity of computer technology, most people are unaware thatLine computers exist in two mutually exclusive, distinct categories: analog and digital.We are most familiar with digital co

26、mputers, such as laptops. On the one hand,digital computers process information using a binary number system that allows(5) them to calculate numbers in an accurate and exact manner. Analog computers,on the other hand, do not calculate per se; they measure and respond to acontinuously changing input

27、Simple analog computers, called astrolabes, were first developed by theGreeks to solve problems in astronomy. The devices proved very popular and(10) soon spread throughout the Roman world. By the 10th century, Muslim scholarshad developed the astrolabe into a sophisticated mechanical device capabl

28、e ofcalculating solutions to problems not only in astronomy, but also in astrology,navigation, surveying, and timekeeping.Modern scientific opinion was that the ancient Greeks had been(15) technologically unable to produce a similarly sophisticated computer, until adiscovery was made just over a cen

29、tury ago. In 1900, divers discovered the wreckof a merchant ship, possibly dating back to 150 BCE, off the coast of the Greekisland Antikythera. In the wreckage, they found the remains of a complex deviceapparently a thousand years ahead of its time.(20) Made of metal, this device, known as the Anti

30、kythera mechanism, isapproximately the size of a shoebox. At the time of its discovery, it was in terribleshape, having been underwater for so long. Its pieces had merged into a brokenmass and experts could discern only that it had something to do with astronomy.Thanks to a combination of advanced i

31、maging methods and X-ray computer(25) tomography, however, scientists have since discovered much more.Originally, the mechanism had at least 30 bronze gears with as many as 225hand-cut triangular teeth. It had three main dials, one on the front and two on theback, respectively marking the astronomic

32、al divisions of the Egyptian calendar,the Metonic cycle, and the Saros cycle. Each dial had subdials for greater(30) specificity. For example, the front dial contained a smaller dial that could beadjusted to account for leap years. There were also hands and gearing to accountfor the movements of the

33、 planets.While the workings of the device are now fairly well understood, researchersare still puzzled by the reason it was made. Some postulate that it, like later(35) astrolabes, was used to create astrological charts, or to set feast days, or even toadjust the lunar and solar calendars. Others ha

34、ve thought it was a curiosity madesolely for display. The devices relatively small size and the inclusion of a 3,000character “users manual“ suggest that the mechanism was created to be portableand functional, but scientists are no closer to knowing for sure and can only(40) wonder at the purpose of

35、 its superb design.（分数：4.00）(1).Which of the following would weaken the authors argument that the Antikythera mechanism was a thousand years ahead of its time?（分数：1.00）A.Items discovered on the Antikythera shipwreck were found to date back to 500 BCE.B.Similarly complex astrolabes were recently foun

36、d at a series of archeological sites dating between 100 and 500 CE.C.Complex machines involving pulleys and ropes were found at archeological sites on the Greek island of Antikythera.D.At the time of the Antikythera shipwreck, the island of Rhodes was famous for its collection of scientific devices.

37、E.(E) Ancient Romans were famous for their acquisitions of Greek art and architecture.(2).The author mentions that the front dial of the Antikythera mechanism contained a smaller, adjustable dial (line 30) most probably in order to（分数：1.00）A.illustrate the complexity of the mechanismB.describe exact

38、ly how the mechanism workedC.emphasize the importance of leap years in the study of astronomyD.argue that the mechanism was used only for very specific tasksE.(E) allow readers to imagine what the device looked like(3).The passages statement that, by the 10th century, Muslim scholars had developed t

39、he astrolabe into a sophisticated mechanical device would justify which of the following conclusions?（分数：1.00）A.Muslim scholars were unaware of other scientific measuring devices.B.Muslim scholars developed a kind of technology that had never been known before.C.There was no need for sophisticated m

40、echanical devices such as the astrolabe before the 10th century.D.The astrolabes sophistication allowed for more exploration of the physical world.E.(E) Muslim scholars had a need to solve complex problems in astronomy, navigation, surveying, and timekeeping.(4).The passage supplies information for

41、answering which of the following questions?（分数：1.00）A.Where was the mechanism made?B.What was the primary purpose of the Antikythera mechanism?C.How did ancient scientists know how to use the Antikythera mechanism?D.Precisely how many gears did the mechanism have?E.(E) What is the purpose of compute

42、r tomography?20.DUBIOUS: (A) inadvertent (B) oblivious (C) intentional (D) skeptical (E) certain（分数：1.00）A.B.C.D.E.21.The intern, while _ , proved too unskilled to be permitted to work on his own _ project. (A) reckless unsupervised (B) enthusiastic dedicated (C) competent autonomous (D) excitable s

43、ubsidiary (E) responsible obscure（分数：1.00）A.B.C.D.E.22.People traveled hundreds of miles to be in the presence of the _ and listen to his _ words. (A) scholar ludicrous (B) dissident calming (C) extrovert fabricated (D) miscreant joyous (E) sage astute（分数：1.00）A.B.C.D.E.二、SECTION 4(总题数：18，分数：28.00)D

44、irections for Quantitative Comparison Questions: Some of the following questions give you two quantities, one in Column A and one in Column B, Compare the two quantities and choose one of the following answer choices: Aif the quantity in Column A is greater; Bif the quantity in column B is greater;

45、Cif the two quantities are equal; Dif you cannot determine the relationship based on the given information（分数：4.00）A.B.C.D.A.B.C.D.A.B.C.D.A.B.C.D.23.If a small soda can contains 300 ml of soda, how many liters of soda are in 25 cans?o (A) 0.75o (B) 7.5o (C) 75o (D) 750o (E) 7,500（分数：1.00）A.B.C.D.E.

46、24.A given street median is planted with trees. Of the 30 trees in the median, 3 are lindens, one-fifth are oaks, 12 are cedars, and the remainder are maples. What is the ratio of lindens to maples?o (A) 1 to 10o (B) 1 to 4o (C) 1 to 3o (D) 1 to 2o (E) 3 to 1（分数：1.00）A.B.C.D.E.Directions for Quantit

47、ative Comparison Questions: Some of the following questions give you two quantities, one in Column A and one in Column B, Compare the two quantities and choose one of the following answer choices:o Aif the quantity in Column A is greater;o Bif the quantity in column B is greater;o Cif the two quanti

48、ties are equal;o Dif you cannot determine the relationship based on the given information（分数：3.00）A.B.C.D.A.B.C.D.A.B.C.D.25.If 2x+3y=18 and y=3, then4x= (A) 3 (B) 9 (C) 10 (D) 18 (E) 36（分数：1.00）A.B.C.D.E.26.Directions for Quantitative Comparison Questions: Some of the following questions give you t

49、wo quantities, one in Column A and one in Column B, Compare the two quantities and choose one of the following answer choices: Aif the quantity in Column A is greater; Bif the quantity in column B is greater; Cif the two quantities are equal; Dif you cannot determine the relationship based on the given information（分数：1.00）A.B.C.D.27.A rancher wishes to enclose a field that me