GRE入学测试题20.docx

GRE入学测试题20.docx

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GRE入学测试题20

GRE测试题

一.选出能取代划线部分的单词（每题1分）

1.Althoughshegivesbadly_______titlestohermusicalcompositions,they_______unusualcombinationsofmaterialsincludingGregorianchant,Asianscalepatternsandrhythms,electronicsounds,andbirdsongs.

A.exotic…belieB.eccentric…deploy

C.traditional…excludeD.imaginative…disguise

E.conventional…incorporate

2.Inarguingagainstassertionsthatenvironmentalcatastropheisimminent,herbookdoesnotridiculeallpredictionsofdoombutratherclaimsthattherisksofharmhaveinmanycasesbeen_________.

A.exaggeratedB.ignored

C.scrutinizedD.deridedE.increased

3.Despiteatendencytobeovertly_______,thepoetryoftheMiddleAgesoftensparkstheimaginationandprovideslivelyentertainment,aswellaspioussentiments.

A.divertingB.emotionalC.didactic

D.romanticE.whimsical

4.Thereseemstobeno________thereadingpublic’sthirstforbooksaboutthe1960’s:

indeed,thenormallevelofinteresthas______recentlybecauseofaspateofpopulartelevisiondocumentaries.

A.quenching…moderatedB.whetting…mushroomed

C.curtailing…warnedD.ignoring…transformed

E.slaking…increased

5.Thescientistfounditpuzzlingthathistheoryencountered_______despitewidespreadagreementthatitwas_______。

A.respect…crucialB.dismissal…simplistic

C.skepticism…unfathomableD.opposition…indisputable

E.acceptance…comprehensive

6.Theideasexpressedinthearthistorian’sbookaremore_____thanonewouldexpectorthebasisofherrather_________treatmentofhersubjectintheopeningpages.

A.compelling…intriguingB.accessible…recondite

C.hidebound…reactionaryD.insightful…innovative

E.dispassionate…evenhanded

7.Thehistoryoffilmreflectsthe_____inherentinthemediumitself:

filmcombinesstillphotographstorepresentcontinuousmotionand,whileseemingtopresentlifeitself,canalsoofferimpossibleanddreamlikeunrealities.

A.trivialitiesB.biasesC.constraints

D.paradoxesE.liabilities

8.Artthatenduresoftenmakesaninitiallydisturbingimpact:

theprofoundexperiencethatsuchartseekstoprovokenecessarilyengendersacertain________。

A.familiarityB.ennuiC.upheaval

D.intimacyE.tranquility

9.Recentresearchinlinguisticssuggeststhatsomelanguageskillsarenot_____skills,butarepasseddownthroughourgeneticcode.

（A）communicative（B）fluent（C）acquired

（D）hereditary.（E）challenging

10.The______withwhichthepoliticianpeppersherspeechesaresomemorablethatmanypeoplethinkofherasbeingfarmore_______thansheinfactis……

A.superlatives…egalitarianB.pejoratives…optimistic

C.examples…soporificD.diatribes…censorious

E.malapropisms…straightforward

二.阅读题（每题2分）

Aspeopleage,theircellsbecomelessefficientand

lessabletoreplacedamagedcomponents.Atthesame

timetheirtissuesstiffen.Forexample,thelungsandthe

heartmuscleexpandlesssuccessfully,thebloodvessels

（5）becomeincreasinglyrigid,andtheligamentsandtendons

tighten.

Fewinvestigatorswouldattributesuchdiverseeffects

toasinglecause.Nevertheless,researchershavediscov-

eredthataprocesslongknowntodiscolorandtoughen

（10）foodsmayalsocontributetoage-relatedimpairmentof

bothcellsandtissues.Thatprocessisnonenzymatic

glycosylation,wherebyglucosebecomesattachedtopro-

teinswithouttheaidofenzymes.Whenenzymesattach

glucosetoproteins（enzymaticglycosylation）,theydoso

（15）ataspecificsiteonaspecificproteinmoleculefora

specificpurpose.Incontrast,thenonenzymaticprocess

addsglucosehaphazardlytoanyofseveralsitesalong

anyavailablepeptidechainwithinaproteinmolecule.

Thisnonenzymaticglycosylationofcertainproteins

（20）hasbeenunderstoodbyfoodchemistsfordecades,

althoughfewbiologistsrecognizeduntilrecentlythatthe

samestepscouldtakeplaceinthebody.Nonenzymatic

glycosylationbeginswhenanaldehydegroup（CHO）of

glucoseandanaminogroup（NH2）ofaproteinare

（25）attractedtoeachother.Themoleculescombine,forming

whatiscalledaSchiffbasewithintheprotein.Thiscom-

binationisunstableandquicklyrearrangesitselfintoa

stabler,butstillreversible,substanceknownasan

Amadoriproduct.

（30）Ifagivenproteinpersistsinthebodyformonthsor

years,someofitsAmadoriproductsslowlydehydrateand

rearrangethemselvesyetagain,intonewglucose-derived

structures.Thesecancombinewithvariouskindsofmol-

eculestoformirreversiblestructuresnamedadvanced

（35）glycosylationendproducts（AGE's）.MostAGE'sare

yellowishbrownandfluorescentandhavespecificspec-

trographicproperties.Moreimportantforthebody,many

arealsoabletocross-linkadjacentproteins,particularly

onesthatgivestructuretotissuesandorgans.Although

（40）noonehasyetsatisfactorilydescribedtheoriginofall

suchbridgesbetweenproteins,manyinvestigatorsagree

thatextensivecross-linkingofproteinsprobablycontrib-

utestothestiffeningandlossofelasticitycharacteristic

ofagingtissues.

（45）Inanattempttolinkthisprocesswiththedevelop-

mentofcataracts（thebrowningandcloudingofthelens

oftheeyeaspeopleage）,researchersstudiedtheeffect

ofglucoseonsolutionsofpurifiedcrystallin,themajor

proteininthelensoftheeye.Glucose-freesolutions

（50）remainedclear,butsolutionswithglucosecausedthe

proteinstoformclusters,suggestingthatthemolecules

hadbecomecross-linked.Theclustersdiffractedlight,

makingthesolutionopaque.Theresearchersalso

discoveredthatthepigmentedcross-linksinhuman

（55）cataractshavethebrownishcolorandfluorescence

characteristicofAGE's.Thesedatasuggestthat

nonenzymaticglycosylationoflenscrystallinsmay

contributetocataractformation.

17.Withwhichofthefollowingstatementsconcerningthestiffeningofagingtissueswouldtheauthormostlikelyagree?

（A）Itiscausedtoalargedegreebyanincreasedrateofcellmultiplication.

（B）Itparadoxicallybothhelpsandhindersthelongevityofproteinsinthehumanbody.

（C）Itcanbecounteractedinpartbyincreasedingestionofglucose-freefoods.

（D）Itisexacerbatedbyincreasedenzymaticglycosylation.

（E）Itprobablyinvolvesthenonenzymaticglycosylationofproteins.

18.Accordingtothepassage,whichofthefollowingstatementsistrueoftheprocessthatdiscolorsandtoughensfoods?

（A）Ittakesplacemoreslowlythanglycosylationinthehumanbody.

（B）Itrequiresahigherratioofglucosetoproteinthanglycosylationrequiresinthehumanbody.

（C）Itdoesnotrequiretheaidofenzymestoattachglucosetoprotein.

（D）Itproceedsmorequicklywhenthefoodproteinshaveamolecularstructuresimilartothatofcrystallinproteins.

（E）Itseffectivenessdependsheavilyontheamountofenvironmentalmoisture.

19.Accordingtothepassage,whichofthefollowingischaracteristicofenzymaticglycosylationofproteins?

（A）AGE'sareformedafteraperiodofmonthsoryears.

（B）Proteinsaffectedbytheprocessaremadeunstable.

（C）Glucoseattachmentimpairsandstiffenstissues.

（D）Glucoseisattachedtoproteinsforspecificpurposes.

（E）AminogroupscombinewithaldehydegroupstoformSchiffbases.

20.Accordingtothepassage,whichofthefollowingstatementsistrueofAmadoriproductsinproteins?

（A）Theyaremoreplentifulinadehydratedenvironment.

（B）Theyarecreatedthroughenzymaticglycosylation.

（C）Theyarecomposedentirelyofglucosemolecules.

（D）TheyarederivedfromSchiffbases.

（E）TheyarederivedfromAGE's

21.Whichofthefollowingbestdescribesthefunctionofthethirdparagraphofthepassage（lines19-29）?

（A）Itoffersevidencethatcontradictsthefindingsdescribedinthefirsttwoparagraphs.

（B）Itpresentsaspecificexampleoftheprocessdiscussedinthefirsttwoparagraphs.

（C）Itexplainsaproblemthattheresearchersmentionedinthesecondparagraphhaveyettosolve.

（D）Itevaluatestheresearchdiscoveriesdescribedinthepreviousparagraph.

（E）Itbeginsadetaileddescriptionoftheprocessintroducedintheprevioustwoparagraphs.

二.数学题（每题2分）

1.Arectangularparkinglot2xfeetlongandxfeetwideistobeenlargedsothatthelotwillbe2timesaslongand3timesaswideasitisnow.Theareaoftheenlargedrectangularlotwillbehowmanytimestheareaofthepresentlot?

（A）6

（B）5

（C）4

（D）3

（E）2

2.If2x=5and3y=8,then

=

（A）

（B）

（C）

（D）

（E）

Questions3-5refertothefollowinggraph.

3.Thetwocorporatesectorsthatincreasedtheirsupportfortheartsfrom1988to1991madeatotalcontributionin1991ofapproximatelyhowmanymilliondollars?

（A）112

（B）125

（C）200

（D）250

（E）315

4.Howmanyofthesixcorporatesectorslistedeachcontributedmorethan$60milliontotheartsinboth1988and1991?

（A）One

（B）Two

（C）three

（D）Four

（E）Five

5.Approximatelyhowmanymilliondollarsmoredidthewholesalesectorcontributetotheartsin1988thanin1991?

（A）10.4

（B）12.6

（C）14.0

（D）16.5

（E）19.2