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1、2021GRE考试真题卷（3）本卷共分为1大题50小题，作答时间为180分钟，总分100分，60分及格。一、单项选择题（共50题，每题2分。每题的备选项中，只有一个最符合题意） 1.Why was the fence builtA to separate the sheep from the cattleB to stop the dingoes from being slaughtered by farmersC to act as a boundary between propertiesD to protect the Australian wool industry 2.On what
2、 point do the conservationists and politicians agreeA Wool exports are vital to the economy.B The fence poses a threat to the environment.C The fence acts as a useful frontier between states.D The number of dogs needs to be reduced. 3.How does the author feel about the fenceA impressedB delightedC s
3、hockedD annoyed 4.Why did the author visit AustraliaA to study Australian farming methodsB to investigate how the fence was constructedC because he was interested in life around the fenceD because he wanted to learn more about the wool industry 5.His - of the assigned pages was itself a much too len
4、gthy summary; by all accounts, if he wishes to succeed by the standards of succinctness and concision, he must learn to restrain his -.Adevelopment techniqueBsynthesis garrulousnessCanalysis constructionDperusal interestE(E) synopsis verbosity 6.Dont rule out the caprices in the spirit; a time of gr
5、eat transformations requires that we be no less than utterly - in our approach to decision-making.AresilientBpracticalCwaryDimpeccableE(E) adaptive 7.The purpose of interior design is to create a physical environment that is - yet connected to the outside world, an environment that is ideal for the
6、pursuit of relaxation in a zone of partial -.Atranscendent of tastefulnessBseparate from isolationCperipheral to tranquilityDabhorrent to confluenceE(E) linked to autonomy 8.Future generations of physicists may look at the - of their former ideas and see in it, not the relics of some extinct creatur
7、e, but a crude, early, yet wholly - version of their more modern theories.Amockery distinctBarmature laughableCspecter congruousDskeleton recognizableE(E) treatment suspect 9.Although most people who acquire West Nile have no - and those who do normally suffer little more than flu-like illness, it i
8、s believed they still can carry - amounts of the virus in their blood for several days.Arecourse negligibleBsymptoms minuteCcure significantDfever activeE(E) hope incipient 10.On the face of it, the plan under consideration is -. and indeed, has already sparked protests from several prominent politi
9、cians, who argue that hasty implementation could - the economy.Ahopeless boostBappealing undermineCcontentious inflameDdraconian damageE(E) suspect radicalize 11.ATTENTIVE: METICULOUS :Apleased: ecstaticBbuoyant: obstinateCbusy: occupiedDpersistent: dauntedE(E) curious: inquisitive 12.DRAFT: CONSCRI
10、PT :Alevy: laborerBsubpoena: witnessCemploy: staffDinduce: sheriffE(E) select: member 13.PODIATRIST: FEET :Aecologist: bionomyBpathology: treatmentCneurologist: psychologyDneonatologist: infantsE(E) botany: fern 14.SAVE: HOARD :Aleave: abscondBelude: ensnareCameliorate: enhanceDtumble: balanceE(E) e
11、xhaust: absorb 15.CONTRACT: AGREEMENT :Asuspension: struggleBwork: allegianceCsubpoena: writDfeat: lawyerE(E) license: property 16.INVENTORY: GOODS :Acensus: inhabitantsBballot: incumbentsCmanifesto: obligationsDagenda: meetingE(E) roster: employers 17.CAULK: LEAKAGE :Awater: aqueductBlubricate: fri
12、ctionCpress: attachmentDbanish: betrayalE(E) vent: condensation 18.METEOROLOGY: WEATHER :Acosmology: atmosphereBseismology: earthquakeCalchemy: chemistryDphonetics: languageE(E) mythology: narrative 19.GAFFE: DECORUM:Afeint: combatBtrick: perceptionCdogma: dissentDgaucherie: urbanityE(E) hyperbole:
13、presentation 20.Which of the following can be inferred from the passage about the technology employed in optical computingAThe technology is more expensive to develop than the technology that was required in electronic computing.BThe search for technology necessary for all-optical computing is consi
14、dered unfeasible and has been largely abandoned.COptical computers systems that rely on digital partitioning algorithms in tandem with error-correction codes are considered hybrid technology.DThe technology necessary for digital optical computing appears within closer reach than the technology for a
15、nalog optical computing.E(E) The most feasible version of optical computing at present is a synthesis of electronic and optical technology. 21.According to the passage, which of the following is true concerning optical computersAResearchers have not yet discovered a means of transporting photons mor
16、e efficiently.BTheir primary limitation is the density of connections required between electronic microchip gates.CTheir accuracy level is poor at 8 to 11 bits, but still superior to that Of electronic computers.DThey invariably rely on electronic circuits to preprocess input data for computation.E(
17、E) Both analog and digital forms of optic computing are presently being developed by scientists. 22.It can be inferred from the passage that the author would be more optimistic about optical computing if which of the following were trueADigital partitioning algorithms could be applied to electronic,
18、 and not just optical circuits.BThe speed of photons could be shown to be significantly greater than that of electrons.CThe precision level in basic operations can be substantially increased without great expense.DThe accuracy of electronic circuits used to preprocess input data and post- process da
19、ta could be greatly increased.E(E) The microchips optical computer systems were shown to require an increasing density of interconnections. 23.The passage suggests that the author would most probably agree with which of the following assessments of optical computing in its present formAAlthough the
20、future of optical computing is impressive, its applications are too limited in scope to justify much optimism.BThe outlook of its development is positive on the surface, but many claims made about it are misleading.CEfforts to develop the technology have been sufficiently positive to maintain the in
21、terest of electrical engineers and physicists.DBecause of design flaws, the task of developing optical computing will require greater resources than are presently available.E(E) The state of development of optical computing is too contradictory to allow for an easy assessment of its future. 24.Accor
22、ding to the passage, the main disadvantage with reconfiguring diet to lessen water usage isAmost North Americans would be unlikely to shift their diets simply in order to accommodate the exigencies of water conservationBthe gains provided by diets with less water-intensive production would likely be
23、 less useful in areas with greater aquifer resourcesCpeople in Asia and certain European countries are dependent on meat-products and could not do without themDdiets with less water-intensive production tend to be less healthy than those with more water-intense productionE(E) governments of certain
24、countries would be unlikely to promote programs for diet change given their possible negative effect on those countries economies 25.Most nearly parallel, in its fundamental approach to the drip system solution described in the passage would be a machine designed toAsave electricity by converting un
25、used sunlight into power through the use of photocellsBwaste less electricity by insulating and reducing resistance in the conduits of the power gridCincrease electrical efficiency by requiring consumers to use appliances that rely on less electricityDcreate a more reliable power grid by supplying e
26、lectricity from a wider range of power plantsE(E) reduce the electricity necessary to powering a city by encouraging denser population growth 26.It can be inferred from the passage that low-pressure sprinklers would be more preferable to high-pressure models for which of the following reasonsAThe su
27、rplus generated by low-pressure systems can be sold, lessening overall water strain on a region.BLow-pressure systems deliver water directly to root systems, resulting in higher crop yields.CA lower cost is associated with low-pressure systems than with high-pressure systems, which are generally mor
28、e expensive.DLower-pressure systems deliver water in such a way that evaporation rates are diminished, resulting in greater efficiency.E(E) Crops watered by lower-pressure systems generally contain higher nutrients, reducing overall food consumption levels. 27.The passage implies that the strain on
29、freshwater aquifers caused by poor irrigation patterns may be reduced by all of the following methods EXCEPTAGovernment compensation programs for surplusBClimate studyCSoil managementDDrip irrigationE(E) Changes in patterns of food consumption 28.The primary purpose of the passage is toAexpose the f
30、ragile ecological conditions which modern irrigation technologies must ameliorateBargue that new irrigation technologies would ultimately be less efficient than a reconfiguration of the North American dietCargue that efficient water-use is dependent upon a mixture of various modern methodsDprovide a
31、n overall view of possible methods for lessening the strain on sources of freshwaterE(E) describe the cycle by which aquifers are depleted and then replenished through technology 29.The author regards the new means of water-use reduction under discussion asAwholly effective, but typically ignoredBin
32、expensive, but insufficiently usefulCpromising, but difficult to implementDnecessary, but likely to produce ill side-effectsE(E) universally accessible, but unnecessary 30.Which of the following can be inferred from the passage concerning the relationship between traditional irrigation methods and m
33、odern onesATraditional irrigation methods tend to come at a lower expense than more modern ones, which are generally dependent on technology.BTraditional methods may best be used in areas where the technological knowledge necessary for using modern techniques is limited.CModern methods, unlike tradi
34、tional ones, can only help land whose primary water source comes from irrigation, not rainfall.DModern methods rely more heavily upon groundwater tapping, which itself depletes the aquifer.E(E) Traditional methods can be performed without the tedious and difficult calculation of climate factors. 31.
35、FLEDGE:AreproduceBreleaseCidentifyDmoltE(E) look for 32.DIABOLIC:AamicableBredolentCmischievousDlavishE(E) somber 33.AFFILIATION:AtendencyBmisconductCaffinityDdissociationE(E) difference 34.CONTAMINATE:AreviveBadoreCfilterDimproveE(E) cleanse 35.VERDANT:AintelligibleBsereCsereneDfrost boundE(E) port
36、entous 36.DIATRIBE:AepistleBtypeCcircumlocutionDaxiomE(E) encomium 37.REPUTE:AindifferenceBmiserlinessCnonentityDrecklessnessE(E) ignorance 38.PREEN:AconfineBopposeCruffleDcoverE(E) annoy 39.BALEFUL:AanimatedBunchallengingCbeneficentDincitingE(E) articulate 40.POROUS:AimperviousBpitilessCimaginaryDo
37、bstinateE(E) prohibited 41.INADVERTENCE:Acomplete loyaltyBattentivenessCgroup movementDdisagreeable characteristicE(E) powerful mind 42.Sadly, Americans of every ethnicity still demand ideological - among their own kind-although were all multiculturalists now, were much more . discussing diversity a
38、cross the rainbow than within each color.Aconformity comfortableBhegemony cantankerousCresonance sensitiveDsubservience catholicE(E) reflection generous 43.While the causes of the Cretaceous-Tertiary extinction have received the most attention, Alvarezs paper points out work on the other major mass
39、extinctions that may also be - for the tragedy.AanswerableBindefensibleCpitiableDreprehensibleE(E) avoidable 44.Although he was - in his efforts to persuade us of the justness of his cause, his past history, . with failures, prevented us from being any more than skeptical at his words.Atireless marr
40、edBsage coupledCresourceful immaculateDunassuming tingedE(E) unyielding touched 45.With legal migration, governments need to persuade voters that they are accepting immigrants who will be - for the country, rather than those who will - drain resources.Abeneficial merelyBjingoistic withalCexotic cons
41、tantlyDamusing ungraciouslyE(E) helpful seldom 46.The thesis under consideration was fundamentally - to the readers of that mendacious publication, and I would therefore like to use this opportunity, to stake out some of the basic arguments in need of -.Acoherent restatementBdisavowed availabilityCm
42、isrepresented clarificationDincomprehensible dismissalE(E) irrelevant subordination 47.FOSTER: DEVELOPMENT :Aimmunize: resistanceBnurture: fertilizationCadorn: sleeknessDchill: tepidityE(E) cultivate: profligacy 48.MAVERICK: CONVENTION:Aapostate: liabilityBheretic: religionCinferior: sovereigntyDinf
43、idel: jingoismE(E) riot: ethos 49.CRUISELINER: SKIFF :Avan: sedanBnebula: starCmissile: dartDtoe: footE(E) item: catalogue 50.EDDY: CURRENT :Adisease: plagueBpummel: assaultCknot: plankDconquest: attackE(E) commotion: spectacle第22页 共22页第 22 页 共 22 页第 22 页 共 22 页第 22 页 共 22 页第 22 页 共 22 页第 22 页 共 22 页第 22 页 共 22 页第 22 页 共 22 页第 22 页 共 22 页第 22 页 共 22 页第 22 页 共 22 页