c

Save25%to50%

Newservice!USAirmeansnewservicefromNewYorkInternationalAirport

iMinneapolis/St.Paul:onlymorningnonstop

Phoenix:directmorningflight

Newservicemeansnewsavings.Save25%offourregularfaretoMinneapolis/St.

PaulandPhoenixwithourspecialintroductoryfare.Justbeginyourtripfrom

June15throughJune29andtravelonewayorroundtriponourAir.Norestrictions

(限制)--justsaving.

Saveevenmore-一upto50%-whenyouchoosefromoveradozenUSAirdiscount

fares-upto40%foradults,50%forchildren2-17.Restrictionsfordiscount

faresvaryandseatingmaybe1imited,sobesuretoplanearly.—Forcomplete

detailsonUSAir'snewserviceandourmanydiscountfares,visityourtravel

agentorcooperatetraveloffice,orcallUSAirinNewYorkat(212)7363200,

inNewJerseycall(201)6223201.

ToMinneapolis/St.PaulAndBack

DepartArriveDepartArrive

9:15a.m10:52a.m6:20p.m9:30p.m

ToPhoenixAndBack

DepartArriveDepartArrive

9:15a.m12:25p.m1:10p.m9:30p.m

ToBostonAndBack

DepartArriveDepartArrive

10:00p.m10:53p.m7:30a.m8:30a.m

Alltimesarelocal.Allflightsto/offfromNewarkinternationalAirport.

64.Thispassageismostprobably.

A.awarningB.anoticeC.anadvertisementD.anannouncement

65.IfyouwanttoflytoBostonsoonafteryoucomebackfromMinneapolis,youhaveto

waitfor.

A.thirtyminutesB.onehourC.onehourandahalfD.threehoursandten

66.Supposethepriceofflightticketis300dollarstoPhoenix,asasecondaryschool

student,howmuchcanyousaveafterhavingchosenoveradozenUSairdiscountfares?

A.120B.150C.180D.225

67.Accordingtothisformabove,.

A.allflightsfromNewarkleaveinthemorning

B.theflighttoPhoenixtakesthreehoursandtenminutes.

C.FlightstoandfromBostontakethesameamountoftime

D.It'simpossibletoreturnfromPhoenixandflytoBostononthesameday

64-67：CABB；

科普知識類

第?部分五年高考題薈萃

Passage1

（09?上海C篇）

“Getyourhandsoffme,Ihavebeenstolen,thelaptop,aportablecomputer,shouted.Thatisanew

solutiontolaptopcomputertheft:aprogramthatletsownersgivetheirpropertyavoicewhenithasbeen

taken.

Theprogramallowsuserstodisplayalertsonthemissingcomputer'sscreenandeventosetaspoken

message.Trackingsoftwareforstolenlaptopshasbeenonthemarketforsometime,butthisisthoughtto

bethefirstthatallowsownerstogivethethiefapieceoftheirmind.

Ownersmustreporttheirlaptopmissingbyvisitingawebsite,whichsendsamessagetothemodel:ared

andyellow“l(fā)ostorstolen^^signappearsonitsscreenwhenitisstarted.Underthelatestversion（版本）of

thesoftware,userscanalsosendaspokenmessage.

Themessagecanbesettoreappearevery30seconds,nomatterhowmanytimesthethiefclosesit."One

customersentamessagesaying/Youarebeingtracked.Iamrightatyourdoor',"saidCarrieHafeman,

chiefexecutiveofthecompanywhichproducestheprogram,Retriever.

Inthelatestversion,peoplecanaddaspokenmessage.Forexample,thelaptop'sspeakerswillsay:"Help,

thislaptopisreportedlostorstolen.Ifyouarenotmyowner,reportmenow.”

TheRetrieversoftwarepackage,whichcosts$29.95buthasafreetrialperiod,hasthefunctionsofmany

securitysoftwareprograms.Ownerscanremotelyswitchtoanalternativepasswordiftheyfearthatthe

thiefhasalsogotholdoftheaccessdetails.

Ifathiefaccessestheinternetwiththestolenlaptop,Retrieverwillcollectinformationontheinternet

serviceproviderinuse,sothatthepolicecanbealertedtoitslocation.

Thousandsoflaptopsarestoleneveryyearformhomesandoffices,butwiththeuseoflaptopsincreasing,

thenumberstolenwhiletheirownersareoutandabouthasbeenrisingsharply.

Othersecuritysoftwareallowsuserstoerasedataremotelyorlockdownthecomputer.

72.Theexpression“togivethethiefapieceoftheirmind“canbeunderstoodas""

A.togivethethiefanalertmind

B.toexpresstheowners'angertothethief

C.toremindthethiefofthisconscience

D.tomakethethiefgiveuphismind

73.Differentfromothersecuritysoftware,Retrievercan.

A.recordthestealingprocessB.helprecognizethelostlaptop

C.lockdownthecomputerremotelyD.sendaspokenmessage

74.Onefunctionoftheprogramisthatitallowstheownertoatadistance.

A.changesomeaccessdetailsforswitchingonthelaptop

B.turnonthelaptopbyusingtheoriginalpassword

C.operatethelaptopbymeansofandalternativepassword

D.erasetheinformationkeptinthestolenlaptop

75.Whichofthefollowingcanbestsummarizethemainideaofthepassage?

A.WithnoRetriever,thousandsoflaptopsarestoleneveryyear.

B.Anewsoftwareprovidesameanstoreducelaptoptheft.

C.Retrieverhashelpedtofindthievesandlostcomputers.

D.Anewprogramoffersacommunicationplatformwiththethief.

答案72.B73.D74.A75.B

Passage2

（09.安徽C篇）

Sometimes,thesimplestideasarethebest.Forexample,toabsorbheatfromthesuntoheatwater,you

needlarge,flat,blacksurfaces.Onewaytodothatistobuildthosesurfacesspecially,ontheroofsof

buildings.Butwhygotoallthattroublewhencitiesarerubofblacksurfacesalready,intheformof

asphalt（柏油）roads?

Tenyearsago,thisthoughtcameintothemindofAriandeBondt,aDutchengineer.Hefinallypersuaded

hisbosstofollowitup.Theresultisthattheirbuildingisnowheatedinwinterandcooledinsummerbya

systemthatreliesonthesurfaceoftheroadoutside.

Theheat-collectorisasystemofconnectedwaterpipes.Mostofthemranfromonesideofthestreettothe

other,justundertheasphaltroad.Some,however,divedeepintotheground.

Whenthestreetsurfacegetshotinsummer,waterpumpedthroughthepipespicksupthisheatandtakesit

undergroundthroughoneofthedivingpipes.Atadepthof100metresliesanaturalaquifer（蓄水層）

intowhichseveralheatexchangers（交換器）havebeenbuilt.Thehotwaterfromthestreetrunsthrough

theseexchangers,warningtheground-water,beforereturningtothesurfacethroughanotherpipe.The

aquiferisthususedasaheatstore.

Inwinter,theworkingsystemischangedslightly.Waterispumpedthroughtheheatexchangerstopickup

theheatstoredduringsummer.Thiswatergoesintothebuildingandisusedtowarmtheplaceup.After

performingthattask,itispumpedundertheasphaltanditsremainingheatkeepstheroadfreeofsnowand

ice.

64.Whichofthefollowingistrueaccordingtothefirsttwoparagraphs?

A.AriandeBondtgothisideafromhisboss.

B.Large,flat,blacksurfacesneedtobebuiltincities.

C.TheDutchengineer'ssystemhasbeenwidelyused.

D.Heatcanalsobecollectedfromasphaltroads.

65.Forwhatpurposearethedivingpipesused?

A.Toabsorbheatfromthesun.

B.Tostoreheatforfutureuse.

C.Toturnsolarenergyintoheatenergy.

D.Tocarryheatdownbelowthesurface.

66.Fromthelastparagraphwecanlearnthat_

A.somepipeshavetobere-arrangedinwinter

B.thesystemcandomorethanwarmingupthebuilding

C.theexchangerswillpickupheatfromthestreetsurface

答案64.D65.D66.B

Passage3

（09?安徽E篇）

Arainforestisanareacoveredbytalltreeswiththetotalhighrainfallspreadingquiteequallythroughthe

yearandthetemperaturerarelydippingbelow16℃.Rainforestshaveagreateffectontheworld

environmentbecausetheycantakeinheatfromthesunandadjusttheclimate.Withouttheforestcover,

theseareaswouldreflectmoreheatintotheatmosphere,warmingtherestoftheworld.Losingthe

rainforestsmayalsoinfluencewindandrainfallpatterns,potentiallycausingcertainnaturaldisastersall

overtheworld.

Inthepasthundredyears,humanshavebegundestroyingrainforestsinsearchofthreemajorresources（資

源：landforcrops,woodforpaperandotherproducts,landforraisingfarmanimals.Thisactionaffects

theenvironmentasawhole.Forexample,alotofcarbondioxide（二氧化碳）intheaircomesfrom

burningtherainforests.Peopleobviouslyhaveaneedfortheresourceswegainfromcuttingtreesbutwe

willsuffermuchmorethanwewillbenefit.

Therearetwomainreasonsforthis.Firstly,whenpeoplecutdowntrees,generallytheycanonlyusethe

landforayearortwo.Secondly,cuttinglargesectionsofrainforestsmayprovideagoodsupplyofwood

rightnow,butinthelongrunitactuallyreducestheworld'swoodsupply.

Rainforestsareoftencalledtheworld'sdrugstore.Morethan25%ofthemedicinesweusetodaycome

fromplantsinrainforests.However,fewerthanl%ofrainforestplantshavebeenexaminedfortheir

medicalvalue.Itisextremelylikelythatourbestchancetocurediseasesliessomewhereintheworld's

shrinkingrainforests.

72.Rainforestscanhelptoadjusttheclimatebecausethey

A.reflectmoreheatintotheatmosphere

B.bringabouthighrainfallthroughouttheworld

C.rarelycausethetemperaturetodroplowerthan16℃

D.reducetheeffectofheatfromthesunontheearth

73.Whatdoestheword“this”underlinedinthethirdparagraphreferto?

A.Wewilllosemuchmorethanwecangain.

B.Humanshavebegundestroyingrainforests.

C.Peoplehaveastrongdesireforresources.

D.Muchcarbondioxidecomesfromburningrainforests.

74.Itcanbeinferredfromthetextthat

A.wecangetenoughresourceswithoutrainforests

B.thereisgreatmedicinepotentialinrainforests

C.wewillgrowfewerkindsofcropsinthegainedland

D.thelevelofannualrainfallaffectswindpatterns

75.Whatmightbethebesttitleforthetext?

A.HowtoSaveRainforests

B.HowtoProtectNature

C.RainforestsandtheEnvironment

D.RainforestsandMedicalDevelopment

答案72.D73.A74.B75.C

Passage4

（09?北京C篇）

HowRoomDesignsAffectOurWorkandFeelings

Architectshavelonghadthefeelingthattheplacesweliveincanaffectourthoughts,feelingsand

behaviors,Butnowscientistsaregivingthisfeelingsanempirical（經(jīng)驗的，實證的）basis.Theyare

discoveringhowtodesignspacesthatpromotecreativity,keeppeoplefocused,andleadtorelaxation.

Researchesshowthataspectsofthephysicalenvironmentcaninfluencecreativity.In2007,Joan

Meyers-LevyattheUniversityofMinnesota,reportedthattheheightofaroom'sceilingaffectshow

peopletothink.Herresearchindicatesthatthehighercallingsencouragepeopletothinkmorefreely,

whichmayleadthemtomakemoreabstractconnections.Lowceilings,ontheotherhand,mayinspirea

moredetailedoutlook.

Inadditiontoceilingheight,theviewaffordedbyabuildingmayinfluenceanoccupant'sabilityto

concentrate.NancyWellsandhercolleaguesatCornellUniversityfoundintheirstudythatkidswho

experiencedthegreatestincreaseingreennessasaresultofafamilymovemadethemostgainsona

standardtestofattention.

Usingnaturetoimprovefocusofattentionoughttopayoffacademically,anditseemsto,accordingtoa

studyledbyC.KennethTanner,headoftheSchoolDesign&PlanningLaboratoryatUniversityof

Georgia.Tannerandhisteamfoundthatstudentsinclassroomswithunblockedviewsofatleast50feet

outsidethewindowhadhigherscoresontestsofvocabulary,languageartsandmathsthandidstudents

whoseclassroomsprimarilyoverlookedroadsandparkinglots.

Recentstudyonroomlightingdesignsuggeststhatdim（暗淡的）lighthelpspeopletoloosenup.Ifthatis

truegenerally,keepingthelightlowduringdinneroratpartiescouldincreaserelaxation.Researchersof

HarvardMedicalSchoolalsodiscoveredthatfurniturewithroundededgescouldhelpvisitorsrelax.

Sofarscientistshavefocusedmainlyonpublicbuildings.4"Wehaveaverylimitednumberofstudies,so

we'realmostlookingattheproblemthroughastraw（吸管）/'architectDavidAllisonsays."Howdoyou

takeanswerstoveryspecificquestionsandmakebroad,generalizeduseofthem?That'swhatweYeall

strugglingwith.”

64.WhatdoesJoanMeyers-Levyfocusoninherresearch?

A.Light

B.Ceilings

C.Windows

D.Furniture.

65.Thepassagetellsusthat.

A.theshapeoffurnituremayaffectpeople,sfeelings

B.lowerceilingsmayhelpimprovestudents,creativity

C.childreninadimclassroommayimprovetheirgrades

D.Studentsinroomswithunblockedviewsmayfeelrelaxed

66.Theunderlinedsentenceinthelastparagraphprobablymeansthat.

A.theproblemisnotapproachedstepbystep

B.theresearchessofarhavefaultsinthemselves

C.theproblemistoodifficultforresearcherstodetect

D.researchinthisareaisnotenoughtomakegeneralizedpattens

67.Whichofthefollowingshowstheorganizationofthepassage?

CP:CentralPointP:pointSp:Sub—point（次要點）C:Conclusion

答案64.B65.A66.D67.C

Passage5

（09?湖北B篇）

Threeyearsago,fiveparrotsweresetfreeinawildplaceofArizona,thousandsofmilesfromtheChannel

IslandsinJerseyshertheyhadbeenlookedafterbyzookeepers.Noevolutionarystrategiesinformedthem

howtobehaveinthisnewLandscapeofmountainouspineforestunoccupiedbytheirkingfor50years.To

theresearchers'surprise,theyfailedtomakecontactwithagroupofwildparrotsimportedfromMexico

andsetfreeatthesametime.Within24hoursthereintroducingendedinfailure,andthepoorbirdswere

backincages,ontheirwaytothesafetyoftheArizonareintroductionprogramme.

Eversincethen,theprogrammehasenjoyedgreatsuccess,mainlybecausethebirdsnowbeingsetfreeare

Mexicanbirdsillegallycaughtinthewild,confiscated（沒收）onarrivalnorthoftheborder,andraised

bytheirparentsinthesafetyoftheprogramme.Theexperienceshowshowlittleweknowaboutthe

behaviourandpsychology（心理）ofparrots,asPeterBennett,abirdresearcher,pointsout:“

Reintroducingspeciesofhighintelligencelikeparrotsisalotmoredifficult.Peoplelikeparrots,always

treatingthemasnothingmorethanpersorvaluable'collectables'.”

Nowthatmanyspeciesofparrotareinimmediatedangerofdyingout,biologistsareworkingtogetherto

studythenaturalhistoryandthebehaviourofthisfamilyofbirds.Lastyearwasanimportantturningpoint:

conservationistsfoundedtheWorldParrotTrust,basedatHayleinCornwall,tosupportresearchintoboth

wildandcagedbirds.

Researchonparrotsisvitalfortworeasons.Forest,astheArizonaprogrammeshowed,when

reintroducingparrotstothewild,weneedtobeawareofwhatthebirdsmustknowiftheyaretosurvivein

theirnaturalhome.Wealsoneedtolearnmoreabouttheneedsofparrotskeotaspets,particularlyasthe

Trust'scampaigndoesnotattempttodiscouragethepractice,butratherurgespeoplewhobuyparrotsas

petstochoosebirdsraisedbyhumans.

55.Whatdoweknowabouttheareawherethefiveparrotswerereintroduced?

A.Itslandscapeisnewtoparrotsoftheirking.

B.Itusedtobehometoparrotsoftheirkind.

C.Itisclosetowheretheyhadbeenkept.

D.Pinetreeswereplantedtoattractbirds.

56.Thereintroducingexperiencethreeyearsagoshowsthatman-raisedparrots.

A.canfindtheirwaybackhomeinJersey

B.areunabletorecognizetheirparents

C.areunabletoadapttothewild

D.canproduceanewspecies

57.Whyareresearchesonparrotsimportantaccordingtothepassage?

A.TheTrustshowsgreatconcernfortheprogramme.

B.Weneedtoknowsmoreabouthowtopreserveparrots

C.Manypeopleareinterestedincollectingparrots.

D.Parrots*intelligencemaysomedaybenefitpeople.

58.Accordingtothepassage,peopleareadvised.

A.totreatwildandcagedparrotsequally

Btosetupcomfortablehomesforparrots

C.nottokeepwildparrotsaspets

D.nottoletmoreparrotsgotothewild

答案55.B56.C57.B58.C

Passage6

（09?四川E篇）

Alltoooften,achoicethatseemssustainable（可持續(xù)的）turnsoutoncloserexaminationtobeproblematic.

Probablythebestexampleistherushtoproduceethanol（乙醇）forfuelfromcom.Comisarenewable

resource-youcanharvestitandgrowmore,almostlimitlessly.Soreplacinggaswithcornethanolseems

likeagreatidea.

Onemightgetabitmoreenergyoutoftheethanolthanthatusedtomakeit,whichcouldstillmake

ethanolmoresustainablethangasgenerally,butthat'snottheendoftheproblem.Usingcorntomake

ethanolmeanslesscornislefttofeedanimalsandpeople,whichdrivesupthecostoffood.Thatresult

leadstoturningthefallowland-including,insomecases,rainforestinplacessuchasBrazil-into

farmland,whichinturngivesofflotsofcarbondioxide（CO2）intotheair.Finally,overmanyyears,the

energybenefitfromburningethanolwouldmakeupfortheforestloss.Butbythen,climatechangewould

haveprogressedsofarthatitmightnothelp.

Youcannotreallydeclareanypractice“sustainable"untilyouhavedoneacompletelife-cycleanalysis

ofitsenvironmental（環(huán)境的）costs.Eventhen,technologyandpublickeepdeveloping,andthat

developmentcanleadtounforeseenandundesiredresults.Theadmirablegoalofliving

sustainablyrequiresplentyofthoughtonanongoingbasis.

57.Whatmightdirectlycausethelossoftheforestaccordingtothetext?

A.Thegrowingdemandforenergytomakeethanol

B.Theincreasingcarbondioxideintheair

C.Thegreaterneedforfarmland

D.Thebigchangeinweather.

58.Theunderlinedword“it”inthesecondparagraphrefersto44

A.theenergybenefitB.theforestloss

C.climatechangeD.burningethanol

59.Theauthorthinksthatreplacinggaswithcomethanolis.

A.impracticalB.acceptableC.admirableD.useless

60.Whatdoestheauthormainlydiscussinthetext?

A.TechnologyB.Sustainability

C.EthanolenergyD.Environmentalprotection

答案57.C58.A59.A60.B

Passage7

（09?天津D篇）

Nexttimeacustomercomestoyouroffice,offerhimacupofcoffee.Andwhenyou'redoingyourholiday

shoppingonline,makesureyou'reholdingalargeglassoficedtea.Thephysicalsensation（感覺）of

warmthencouragesemotionalwarmth,whileacolddrinkinhandpreventsyoufrommakingunwise

decisions—thosearethepracticallessonbeingdrawnfromrecentresearchbypsychologistJohnA.Bargh.

Psychologistshaveknownthatoneperson'sperception（感知）ofanother's"warmth“isapowerful

determinerinsocialrelationships.Judgingsomeonetobeeither"warm”or"cold”isaprimary

consideration,eventrumpingevidencethata"cold”personmaybemorecapable.Muchofthisisrootedin

veryearlychildhoodexperiences,Barghargues,whenbabies'conceptualsenseoftheworldaroundthem

isshapedbyphysicalsensations,particularlywarmthandcoldness.ClassicstudiesbyHarryHarlow,

publishedin1958,showedmonkeyspreferredtostayclosetoacloth“mother5'ratherthanonemadeof

wire,evenwhenthewire“mother“carriedafoodbottle.Harlow'sworkandlaterstudieshaveled

psychologiststostresstheneedforwarmphysicalcontactfromcaregiverstohelpyoungchildrengrow

intohealthyadultswithnormalsocialskills.

Feelingsof“warmth”and"coldness“insocialjudgmentsappeartobeuniversal.Althoughnoworldwide

studyhasbeendone,Barghsaysthatdescribingpeopleas“warm”or“cold”iscommontomanycultures,

andstudieshavefoundthoseperceptionsinfluencejudgmentindozensofcountries.

Totesttherelationshipbetweenphysicalandpsychologicalwarmth,Barghconductedanexperiment

whichinvolved41collegestudents.Aresearchassistantwhowasunawareofthestudy'shypotheses（假

設）,handedthestudentseitherahotcupofcoffee,oracolddrink,toholdwhiletheresearcherfilledouta

shortinformationform:Thedrinkwasthenhandedback.Afterthat,thestudentswereaskedtoratethe

personalityof“PersonA”basedonaparticulardescription.Thosewhohadbrieflyheldthewarmdrink

regardedPersonAaswarmerthanthosewhohadheldtheiceddrink.

“Wearegroundedinourphysicalexperiencesevenwhenwethinkabstractly,“saysBargh.

51.AccordingtoParagraph1,aperson'semotionmaybeaffectedby.

A.thevisitorstohisoffice

B.thepsychologylessonshehas

C.hisphysicalfeelingofcoldness

D.thethingshehasboughtonline

52.TheauthormentionsHarlow'sexperimenttoshowthat.

A.adultsshoulddevelopsocialskills

B.babiesneedwarmphysicalcontact

C.caregiversshouldbehealthyadults

D.monkeyshavesocialrelationships

53.InBargh'sexperiment,thestudentswereaskedto.

A.evaluatesomeone'spersonality

B.writedowntheirhypotheses

C.filloutapersonalinformationform

D.holdcoffeeandcolddrinkalternatively

54.Wecaninferfromthepassagethat.

A.abstractthinkingdoesnotcomefromphysicalexperiences

B.feelingsofwarmthandcoldnessarestudiedworldwide

C.physicaltemperatureaffectshowweseeothers

D.capablepersonsareoftencoldtoothers

55.Whatwouldbethebesttitleforthepassage?

A.DrinkingforBetterSocialRelationships.

B.ExperimentsofPersonalityEvaluation.

C.DevelopingBetterDrinkingHabits.

D.PhysicalSensationsandEmotions.

答案51.C52.B53.A54.C55.D

Passage8

（09?浙江C篇）

Plantscan'tcommunicatebymovingormakingsounds,asmostanimalsdo.Instead,plants

Producevolatilecompounds,chemicalsthateasilychangefromaliquidtoagas.Aflower'ssweet

smell,forexample,comesfromvolatilecompoundsthattheplantproducestoattractinsectssuchas

Bugsandbees.

Plantscanalsodetectvolatilecompoundsproducedbyotherplants.Atreeunderattackby

Hungryinsets,forinstance,maygiveoffvolatilecompoundsthatletothertreesknowaboutthe

Attack.Inresponse,theothertreesmaysendoffchemicalstokeepthebugsaway--oreven

Chemicalsthatattractthebugs'naturalenemies.

Nowscientistshavecreatedaquickwaytounderstandwhatplantsaresaying:achemical

Sensor（傳感器）calledanelectronicnose.The"e?nose“cantellcompoundsthatcropplantsmake

Whenthey'reattackedScientistssaythee-nosecouldhelpquicklydetectwhetherplantsarebeing

Eatenbyinsects.Buttodaytheonlywaytodetectsuchinsectsistovisuallyinspectindividual

Plants.Thisisachallengingtaskformanagersofgreenhouses,enclosedgardensthancanhouse

Thousandsofplants.

Theresearchteamworkedwithane-nosethanrecognizesvolatilecompounds.Insidethe

device,13sensorschemicallyreactwithvolatilecompoundsBasedontheseinteractions,the

e-nosegivesoffelectronicsignalsthatthescientistsanalyzeusingcomputersoftware.

Totestthenose,theteampresenteditwithhealthyleavesfromcucumber,pepperandtomato

plants,allcommongreenhousecrops.Thenscientistscollectedsamplesofairarounddamaged

leavesfromeachtypeofcrop,Theseplantshadbeendamagedbyinsects,orbyscientistswhomade

holesintheleaveswithaholepunch（打孔器）.

Thee-nose,itturnsout,couldidentifyhealthycucumber,pepperandtomatoplantsbasedon

Thevolatilecompoundstheyproduce,Itcouldalsoidentifytomatoleavesthathadbeendamaged.

Butevenmoreimpressive,thedevicecouldtellwhichtypeofdamage--一byinsectsorwithahole

Punch--hadbeendonetothetomatoleaves.

Withsomefine-tuning,adevicelikethee-nosecouldonedaybeusedingreenhousestoquicklyspot

harmfulbugs,theresearcherssay.Adevicelikethiscouldalsobeusedtoidentifyfruitsthatareperfectly

ripeandreadytopickandeat,saysNataliaDudareva,abiochemistatPurdueUniversityinWestLafayette,

Ind.whostudiessmellsofflowersandplants.Hopefully,scientistsbelieve,thedevicecouldbringlarge

benefitstogreenhousemanagersinthenearfuture.

49.Welearnfromthetextthatplantscommunicatewitheachotherby.

A.makingsomesoundsB.wavingtheirleaves

C.producingsomechemicalsD.sendingoutelectronicsignals

50.Whatdidthescientistsdotofindoutifthee-noseworked?

A.Theypresenteditwithallcommoncrops.

B.Theyfixed13sensorsinsidethedevice.

C.Theycollecteddifferentdamagedleaves.

D.Theymadetestsondamagedandhealthyleaves.

51.Accordingtothewriter,themostamazingthingaboutthee-noseisthatitcan__.

A.pickoutripefruits

B.spottheinsectsquickly

C.distinguishdifferentdamagestotheleaves

D.recognizeunhealthytomatoleaves

52Wecaninferfromthelastparagraphthatthee-nose.

A.isunabletotellthesmellofflowers

B.isnotyetusedingreenhouses

C.isdesignedbyscientistsatPurdue

D.ishelpfulinkillingharmfulinsects

答案49.C50.D51.C52.B

Passage9

（09?重慶C篇）

Sportscanhelpyoukeepfitandgetintouchwithnature.However,whetheryouareonthemountains,in

thewaves,oronthegrassland,youshouldbeawarethatyoursportofchoicemighthavegreatinfluence

ontheenvironment.

Somesportsareresource-hungry.Golf,asyoumayknow,eatsupnotonlylargeareasofcountryside,but

alsotonsofwater.Besides,allsortsofchemicalsandhugeamountsofenergyareusedtokeepitscourses

（球場）ingoodcondition.Thiscausesmajorenvironmentaleffects.Forexample,inthedryregionsof

PortugalandSpain,golfisoftenheldresponsibleforseriouswatershortageinsomelocalareas.

Therearemanyenvironment-friendlysports.Power