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第4部分:阅读理解(第31~45题,每题3分,共45分)下面有3篇短文,每篇短文后有5道题,每题背面有4个选项。请仔细阅读短文并根据短文回答其背面旳问题,从4个选项中选择1个最佳答案涂在答题卡对应旳位置上。第一篇
InsomniaInsomniaistheinabilitytosleeprestfully.Itisaproblemtonearlyeveryoneatsometime.Apersonmaybeawakeforanhourinthemiddleofthenightandthen,nextmorning,feelthathehardlysleptallnight.Normally,worryaboutnotgettingenoughsleepistheworstaspectofmostinsomnia.Ifinsomniaoccursrepeatedly,itisimportanttofinditspossiblecausesandtrytocorrectthem.Anyoflargenumberofsimplefactorsmaymakeitdifficultforsomeonetofallasleep.Hismattressmaybetoosoftortoohard.Iftherearetoomanyblanketsonahotnight,hemaybetoowarm;ifthemattressistoolighthemayfeelcoldduringthenight.Thebedroomitselfmaybeoverheatedortoocold.Ifitisnotdarkenough,ortoonoisy,thismaycausedifficultyinsleeping.Eatingshortlybeforegoingtobedmayalsoberesponsibleforinsomnia.Drinks,suchasteaorcoffee,canalsokeeppeopleawake.Inabilitytofallasleepissometimesasymptomofemotionalormentaldisorder.Thecauseofinsomniamaybeeasytocorrect.Thesufferershouldcheckthemattress,andbedroomtemperature,andmakeanynecessarychanges.Heshouldrelaxforanhourortwobeforebedtime,perhapsbyreadingabook,watchingtelevisionortakingawarmbath.Ifhewakesduringthenightheshouldtryturningonthelightandreadingforawhile.Takingwarmmilkandabiscuitortwomaybehelpful.Aboveall,heshouldtrynotworryaboutsleeplessness—whensomeoneistiredenoughhenearlyalwaysfallsasleep.
31Accordingtothepassage,insomniaisAaseriousdisease.Bacommoncomplaint.Casignofillness.Danunusualproblem32Accordingtothepassage,peoplewhohasdifficultyinsleepingshouldsleepinAadarkandquietroom.Balightandwarmroom.Cacoldandquietroom.Dadarkandwarmroom.33Accordingtothepassage,ifapersonwantstofallasleepfastheshouldn’tAeatanythingduringsuppertime.Breadanybooksbeforehegoestobed.Cwatchtelevisionshortlybeforegoingtobed.Ddrinkanythingthatwillkeephimawake.34Accordingtothepassage,whatistheworstaspectofinsomnia?AWatchingtoomuchtelevision.BEatingtoomuchbeforegoingtobed.CWorryingaboutsleeplessness.DReadingtoomuchatnight.35Accordingtotheauthor,insomniashouldn’tbeaseriousproblembecauseAitscausecanbecorrectedbymakingoneselffeeltiredenough.Bdoctorscancureiteasily.Csomepeoplecancatchupontheirsleepduringtheday.Dsomepeopledon’tneedsomuchsleep.
第二篇
Mind-readingMachine
AteamofresearchersinCaliforniahasdevelopedawaytopredictwhatkindsofobjectspeoplearelookingatbyscanningwhat'shappeningintheirbrains.
Whenyoulookatsomething,youreyessendasignalaboutthatobjecttoyourbrain.Differentregionsofthebrainprocesstheinformationyoureyessend.Cellsinyourbraincalledneuronsareresponsibleforthisprocessing.
ThefMRI(functionalMagneticResonanceImaging)brainscanscouldgenerallymatchelectricalactivityinthebraintothebasicshapeofapicturethatsomeonewaslookingat.
Likecellsanywhereelseinyourbody,activeneuronsuseoxygen.Bloodbringsoxygentotheneurons,andthemoreactiveaneuronis,themoreoxygenitwillconsume.Themoreactivearegionofthebrain,themoreactiveitsneurons,andinturn,themorebloodwilltraveltothatregion.AndbyusingfMRI,scientistscanvisualizewhichpartsofthebrainreceivemoreoxygen-richblood--andtherefore,whichpartsareworkingtoprocessinformation.
AnfMRImachineisadevicethatscansthebrainandmeasureschangesinbloodflowtothebrain.Thetechnologyshowsresearchershowbrainactivitychangeswhenapersonthinks,looksatsomething,orcarriesoutanactivitylikespeakingorreading.Byhighlightingtheareasofthebrainatworkwhenapersonlooksatdifferentimages,fMRImayhelpscientistsdeterminespecificpatternsofbrainactivityassociatedwithdifferentkindsofimages.
TheCaliforniaresearcherstestedbrainactivitybyhavingtwovolunteersviewhundredsofpicturesofeverydayobjects,likepeople,animals,andfruits.ThescientistsusedanfMRImachinetorecordthevolunteers'brainactivitywitheachphotographtheylookedat.Differentobjectscauseddifferentregionsofthevolunteers'brainstolightuponthescan,indicatingactivity.Thescientistsusedthisinformationtobuildamodeltopredicthowthebrainmightrespondtoanyimagetheeyessee.
Inasecondtest,thescientistsaskedthevolunteerstolookat120newpictures.Likebefore,theirbrainswerescannedeverytimetheylookedatanewimage.Thistime,thescientistsusedtheirmodeltomatchthefMRIscanstotheimage.Forexample,ifascaninthesecondtestshowedthesamepatternofbrainactivitythatwasstrongly,relatedtopicturesofapplesinthefirsttest,theirmodelwouldhavepredictedthevolunteerswerelookingatapples.
36.Whatisresponsibleforprocessingtheinformationsentbyyoureyes?
A
Asmallregionofthebrain.
B
Thecentralpartofthebrain.
C
Neuronsinthebrain.
D
Oxygen-richblood.37.WhichofthefollowingstatementsisNOTmeantbythewriter?
A
Cellsinyourbrainarecalledneurons.
B
Themoreoxygenaneuronconsumes,themoreblooditneeds.
C
fMRIhelpsscientiststodiscoverwhichpartsofthebrainprocessinformation.
D
fMRIhelpsscientiststodiscoverhowthebraindevelopsintelligently.38."Highlightingtheareasofthebrainatwork"means
A
"markingthepartsofthebrainthatareprocessinginformation"
B
"givinglighttothepartsofthebrainthatareprocessinginformation"
C
"puttingthepartsofthebraintowork"
D
"stoppingthepartsofthebrainfromworking"39.Whatdidtheresearchersexperimenton?
A
Animals,objects,andfruits.
B
Twovolunteers.
C
fMRImachines.
D
Thousandsofpictures.40.Whichofthefollowingcanbethebestreplacementofthetitle?
A
TheRecentDevelopmentinScienceandTechnology.
B
YourThoughtsCanBeScanned.
C
ATechnologicalDream.D
DevicethatcanHelpYouCalculate.
第三篇
ListeningDeviceProvidesLandslideEarlyWarningAdevicethatprovidesearlywarningofalandslidebymonitoringvibrationsinsoilisbeingtestedbyUKresearchers.Thedevicecouldsavethousandsofliveseachyearbywarningwhenanareashouldbeevacuated,thescientistssay.
Suchnaturaldisastersarccommonincountriesthatexperiencesudden,heavyrainfall,andcanalsobetriggeredbyearthquakesandevenwatererosion.Landslidesstartwhenafewparticlesofsoilorrockwithinaslopestarttomove,buttheearlystagescanbehardtospot.
Followingthisinitialmovement,"slopescanbecomeunstableinamatterofhoursorminutes,"saysNellDixonatSouthboroughUniversity1,UK.Hesaysawarningsystemthatmonitorsthismovement"mightbeenoughtoevacuateablockofflatsorcleararoad,andsavelives."Themostcommonwaytomonitoraslopeforsignsofanimminentlandslideistowatchforchangesinitsshape.Surveyorscandothisbymeasuringasidedirectly,orsensorssunkintoboreholesorfixedabovegroundcanbeusedtomonitortheshapeofaslope.Slopescan.however,changeshapewithouttriggeringalandslide,soeithermethodispronetocausingfalsealarms.NowDixon'steamhasdevelopedadevicethatlistensforthevibrations'causedwhenparticlesbeginmovingwithinaslope.Thedevicetakestheformofasteelpipedroppedintoaboreholeinaslope.Theboreholeisfilledinwithgravelaroundthepipetohelptransmithigh-frequencyvibrationsgeneratedbyparticleswithintheslope.Thesevibrationspassupthetubeandarepickedupbyasensoronthesurface.Softwareanalysesthevibrationsignaltodeterminewhetheralandslidemaybeimminent.Thedeviceiscurrentlybeingtestedina6-metre-tallartificialclayembankmentinNewcastle2,UK.Earlyresultssuggestitshouldprovidefewerfalsepositivesthanexistingsystems.Onceithasbeencarefullyandthoroughlytested,thedevicecouldbeusedtocreateacompleteearly-warningsystemfordangerousSlopes."Locationswithasignificantriskoflandslidescoulddefinitelybenefitfromamachinelikethis,"saysAdamPoulter,anexpertattheBritishRedCross."Aslongasitdoesn'tcosttoomuch,"But,Poulteraddsthatanearly-warningsystemmaynotbeenoughonitsown."Youneedtohavethehumancommunication,"hesays."Makingsystemsthatgetwarningstothosewhoneedthemcanbedifficult."
41.Whatdoes"Suchnaturaldisasters"inthefirstparagraphreferto?
A
Sudden,heavyrainfall.
B
Earthquakes.
C
Watererosion.
D
Landslides.42.Whichofthefollowingstatementsistrueoflandslides?
A
Theinitialmovementishardtospot.
B
Theystartwithamovementofafewparticlesofsoilorrock.
C
Theycanbedestructiveinamatterofhoursorminutes.
D
Alloftheabove.43.Whydoresearchersdevelopanewdevicetomonitorsignsoflandsides?
A
Becausethenewdevicecanmeasurethesitedirectly.
B
Becausethenewdevicecanbesunkintoboreholesorfixedaboveground.
C
Becausethecommonmethods.cancausefalsealarms.
D
Becausethecommonmethodsareuseless.44.WhichofthefollowingstatementsisNOTtrueofthedevice,accordingtoParagraph4?
A
Itisfilledinwithgravel.
B
Itconsistsofasteelpipe.
C
Itisdroppedintoaboreholefilledinwithgravel.
D
Itisconnectedtoasensoronthesurface.45.Accordingtothecontext,whatdoestheword"positives"inthefifthparagraphmean?
A
Positiveelectriccharges.
B
Evidences.
C
Warnings.
D
Predictions.
第5部分:补全短文(第46~50题,每题2分,共10分)阅读下面旳短文,文章中有5处空白,文章背面有6组文字,请根据文章旳内容选择5组文字,将其分别放回文章原有位置,以恢复文章原貌。请将答案涂在答题卡对应旳位置上。
FormsofEnvironmentalDisease
46.Howthediseasesareexpresseddependsonhowtheparticularenvironmentalagententersthebody,howitismetabolized(引起代谢),andbywhatrouteitisexcreted.Theskin,lungs,liver,kidneys,and
47.Ofparticularconcernisthecapacityofmanyenvironmentalagentstocausevariouscancers,birthdefectsorspontaneousaffection(throughfetalexposure),andmutations(突变)ingermcells,
48.Environmentalillnessescanbemildorsevereandrangefromtransienttochronic,dependingonthedosesoftoxin(毒素)received.Somediseasesoccurabruptlyatatoxicexposure,whereasthetimeofonsetofotherdiseasesvariesafterexposure.
49.Thoseillnessesthatoccurdirectlyafteradistincttoxicexposureareusuallyeasilyidentifiedasbeingenvironmentallyoroccupationallycaused.Iftheexposureisnotclear-cutorillnessisdelayed,however,thecauseisdifficulttoidentify,asclinicalfeaturesaloneareusuallynonspecific.
50.Insuchinstances,epidemiologicalstudiesofexposedpopulationscanhelprelateexposurestotheillnessestheycause.
AEnvironmentallyinducedcancers,forexample,commonlyinvolvelatency(潜伏期)periodsof15to30yearsormoreBInaddition,manydifferentcauses,environmentalorotherwise,mayproduceidenticalillnessesCHowever,thereverseistrueDnervoussystemsarecommonlyaffectedbydifferentagentsindifferentsettingsEthelastnamedraisingpossibilitiesofenvironmentallycausedgeneticdiseasesinlatergenerationsFEnvironmentaldiseasescanaffectanyorgansystemofthebody第6部分:完形填空(第51~65题,每题1分,共15分)阅读下面旳短文,文中有15处空白,每处空白给出4个选项,请根据短文旳内容从4个选项中选择1个最佳答案,涂在答题卡对应旳位置上。
TakingaNapDuringtheDay
MedicalexpertssaymostAmericansdonotget
51
sleep.TheysaymoreAmericansneedtorestforashortperiodinthemiddleoftheday.Theyareadvisingpeopletosleeplightlybefore
52
withotheractivities.
Onestudyearlierthisyearfoundthatpersonswhosleepforafewminutesduringthedaywereless
53
todieofheartdisease.Thestudyfollowedmorethan2,300Greekadults
54
aboutsixyears.Adultswhorestedforhalfanhour
55
threetimesaweekhada37presentlowerriskofdyingfromheartdiseasethanthosewhodidnotnap.
Studyorganizerssaidthestrongestevidencewasinworkingmen.Theysaidnapsmightimprove
56
bymitigatingtensioncausedbywork.
SomeEuropeanandLatinAmericanbusinesseshavesupportedthe
57
ofnappingformanyyears.Theyurgepeopleto
58
work,gohomeandhaveanapbeforereturning.IntheUnitedStates,somecompaniesletworkersrestbrieflyintheiroffices.Theybelievethisreduces59
andaccidents,and
60
increasestheamountofworkapersoncando.
Sleepexpertssayitislikelythatpeoplemakemoremistakesatworkthanatothertimes.Theysaypeopleshouldnotcarryoutimportantdutieswhentheyfeel
61
Andtheysaythebestthingtodoistotakeanap.Abouttwentyminutesofrestis
62
youneed.Expertssaythisprovidesextraenergyandcanincreaseyoureffectiveness
63
theendoftheday.Butexpertswarnthatanap
64
lastnomorethantwentytothirtyminutes.Alongernapwillputthebodyintodeepsleepandwakingupwillbe
65
.
51.A
sweet
B
sound
C
bad
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