《大学英语三》作业.docx

《大学英语三》作业.docx

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《大学英语三》作业

《大学英语（三）》作业

PartI.ReadingComprehension

Directions:

Therearethreepassagesinthispart.Eachpassageisfollowedbysomequestions.Foreach

ofthemtherearefourchoicesmarkedA,B,CandD.Youshoulddecideonthebestchoice.

Passage1

Inthesummerof1978anEnglishfarmernamedIanStevenswasdrivinghistractorthroughafieldofwheatwhenhediscoveredsomethingstrange.Someofhiswheatwaslyingflatontheground.Theflattened（被压平的）wheatformedacircleaboutsixmetersacross.Aroundthiscirclewerefoursmallercirclesofflattenedwheat.Inthefollowingyearsmoreandmoresimilarcircleswerefoundinafieldofwheatorcorn.Sopeoplecannothelpbutaskthequestion:

Whatcausesthecircles?

Atfirst,peoplesuspectedthatthecircleswereatrick.Toprovethatthecircleswereatrick,peopletriedtocopythem:

theytriedtomakecirclesexactlyliketheonesthefarmershadfound.Theycouldn'tdoit.Theycouldn'tenterafieldofgrainwithoutleavingtracks,andtheycouldn'tflattenthegrainwithoutbreakingit.Thecirclesareapparentlynotatrick.

Manypeoplebelievethatbeingsfromouterspacearemakingthecircles.Somethinkthatthebeingsaretryingtocommunicatewithusfromfarawayandthatthecirclesaremessagesfromthem.Othersbelievethatthebeingshaveactuallylandedonearthandthatthecirclesaremarksleftbytheirspaceships.Severaltimespeoplereportedseeingstrangeflyingobjectsnearfieldswherecircleslaterappeared.

Scientistssaythey'renotsurewhatcausesthem.Theyhavesuggestedseveraltheories.Forexample,somescientistssaythat"microbursts"ofwindcreatedthecircles.Amicroburstisadownwardrushofcoolair—thesamedownwardrushofairthatsometimescausesanairplanetocrash.Othersscientistssaythatforceswithintheearthcausethecirclestoappear.Butcirclesoftenappearinforms.Itishardtobelievethatanynaturalforcecouldcreatethoseforms.Andrecentlyfarmershavediscoverednotonlycirclesbutalsoothershapessuchastrianglesintheirfields.Couldanynaturalforcecreatedaperfecttriangleinafieldofgrain?

Inthesummerof1990somescientistsspentthreeweeksinthepartofEnglandwheremanycircleshaveappeared.Theyhadallthelatesthigh-techequipment.Thisequipment—worth1.8milliondollars—recordednothing.Butonenight,asthescientistswerewatchingafield,circlesformedinthefieldbehindthem.Thesecirclesareshowninthephotograph.Thescientistshadneitherseennorheardanything.（402words）

1.Whatcausesthecircles?

A.Teenagers.B.Farmers.C.Flyingobjects.D.Noneoftheabove.

2.Thethingthatprovesthatthecircleswerenotatrickisthat________.

A.twomensaidtheymadethecirclesthemselves

B.farmersweremakingthecirclestoattracttourists

C.peoplecannotcopythecircleswithoutleavingmarksorbreakingthegrain

D.scientistssuggesttheoriesthatsupporttheideathatcirclesweremadebynaturalforces

3.Thecirclesmean________.

A.thatbeingsfromouterspacearetryingtocommunicatewithhumanbeings

B.thatbeingsfromouterspacehavevisitedtheearth

C.thattheredoexiststrangeflyingobjects

D.noneoftheabove

4.Theonlythingforthescientiststobehappyaboutinthesummerof1990ispossibly________.

A.thattheydiscoveredhowthecirclesweremade

B.thattheysawthecircleswiththehelpofthelatesthigh-techequipment

C.thattheywereabletoshowthecirclesinaphotograph

D.noneoftheabove

5.Apropertitleforthispassageis________.

A.AnUnsolvedMysteryB.StrangeFlyingObjects

C.ThePowerofNaturalForcesD.TheDiscoveryofStrangeCircles

Passage2

Intheearlydaysofseatravel,seamenlivedentirelyonsaltedmeatandbiscuits.Manyofthemdiedofscurvy（坏血病）,adiseaseofthebloodwhichcausesswollengums,palewhitespotsonthefleshandgeneralexhaustion.Ononeoccasion,in1535,anEnglishshiparrivedinNewfoundlandwithitscrewseriouslyill.Themen'slivesweresavedbyIroquoisIndianswhogavethemvegetableleavestoeat.Graduallyitcametoberealizedthatscurvywascausedbysomelackinthesailors'dietandCaptainCook,whowastodiscoverAustraliaandNewZealand,establishedthefactthescurvycouldbeavoidedbyprovisionoffreshfruitforthesailors.

Nowadaysitisunderstoodthatadietwhichcontainsnothingharmfulmayyetresultinseriousdiseaseifcertainimportantelementsaremissing.Theseelementsarecalled"vitamins".Quiteanumberofsuchsubstancesareknownandtheyaregivenletterstoidentifythem,A,B,C,D,andsoon.Differentdiseasesareassociatedwithdeficienciesofparticularvitamins.EvenaslightlackofVitaminC,forexample,thevitaminmostplentifulinfreshfruitandvegetables,isthoughttoincreasesignificantlyourpossibilityofgettingbadcolds.

Thevitaminsnecessaryforahealthbodyarenormallysuppliedbyagoodmixeddiet,includingavarietyoffruitandgreenvegetables.Itisonlywhenpeopletrytoliveonaveryrestricteddiet,sayduringextendedperiodsofreligiousfasting（禁食）,orwhentryingtoloseweight,thatitisnecessarytomakespecialprovisiontosupplythemissingvitamins.（274words）

1.Scurvyisadiseasewhichcauses________.

A.lossofbloodB.swollenlimbs

C.exhaustionD.brightredspotsontheflesh

2.Adietwhichcontainsnothingharmful________.

A.mayyetcausescurvyB.hasplentyofvitamins

C.willusuallyresultinseriousdiseaseD.alwaysensuresgoodhealth

3.Deficienciesofthevariousvitamins________.

A.causeidenticaldiseases

B.arenotseriousexceptinthecaseofvitaminC

C.causedifferentdiseases

D.areoftencausedbyscurvy

4.Freshfruitandvegetables________.

A.containmorevitaminCthananyotherfood

B.decreaseourresistancetocolds

C.containeverykindofvitamin

D.increaseourpossibilityofgettingbadcolds

5.Agoodmixeddiet________.

A.normallycontainsenoughvitaminsB.stillneedssupplementingwithvitamins

C.issuitableforreligiousfastingD.isoftendifficulttoarrange

Passage3

Hehaduncombedhair,dirtyclothes,andonly35centsinhispocket.InBaltimore,Maryland,hegotonabusandheadedstraightfortherestroom.Hethoughtthatifhehidintherestroom,hecouldridetoNewYorkwithoutpaying.Butapassengeratthebackofthebussawhim.Shetappedthepersoninfrontofherontheshoulderandsaid,"There'sabum（乞丐）intherestroom.Tellthebusdriver."Thatpassengertappedthepersonsittinginfrontofhim."Tellthebusdriverthere'sabumintherestroom,"hesaid.

Themessagewaspassedfrompersontopersonuntilitreachedthefrontofthebus.Butsomewherealongtheway,themessagechanged.Bythetimeitreachedthebusdriver,itwasnot"There'sabumintherestroom"but"There'sabombintherestroom."Thedriverimmediatelypulledovertothesideofthehighwayandradioedthepolice.Whenthepolicearrived,theytoldthepassengerstogetoffthebusandstayfarway.Thentheyclosedthehighway.Thatsooncauseda15-mile-longtrafficjam.Withthehelpofadog,thepolicesearchedthebusfortwohours.Ofcourse,theyfoundnobomb.

Twosimilar-soundingEnglishwordsalsocausedtroubleforamanwhowantedtoflyfromLosAngelestoOakland,California.HisproblemsbeganattheairportinLosAngeles's.Hethoughtheheardhisflightannounced,sohewalkedtothegate,showedhisticket,andgotontheplane.Twentyminutesaftertakeoff,themanbegantoworry.OaklandwasnorthofLosAngeles,buttheplaneseemedtobeheadingwest,andwhenhelookedouthiswindowallhecouldseewasocean."IsthisplanegoingtoOakland?

"heaskedtheflightattendant（服务员）.Theflightattendantwasshocked."No,"shesaid."We'regoingtoAuckland—Auckland,NewZealand."

WhenaKoreanwomanwholivesintheUnitedStatesarrivedatworkonemorning,herbossaskedher,"Didyougetaplate?

""No..."sheanswered,wonderingwhatintheworldhemeant.Sheworkedinanoffice.Whydidthebossaskheraboutaplate?

Atfiveo'clock,whenshewasgettingreadytogohome,herbosssaid,"Pleasebeontimetomorrow.Youwere15minuteslatethismorning.""Sorry,"shesaid."Mycarwouldn'tstart,and..."Suddenlysheunderstood.Herbosshadn'taskedher,"Didyougetaplate?

"Hehadasked,"Didyougetuplate?

"

Englishisnottheonlylanguagewithsimilar-soundingwords.Otherlanguages,too,havewordsthatcancausemisunderstandings,especiallyforforeigners.

AucklandandOakland."Aplate"and"uplate".Whensimilar-soundingwordscauseamisunderstanding,probablythebestthingtodoisjustlaughandlearnfromthemistake.Ofcourse,sometimesit'shardtolaugh.ThemanwhotraveledtoAucklandinsteadofOaklanddidn'tfeellikelaughing.Buteventhatmisunderstandingturnedoutallrightintheend.Theairlinepaidfortheman'shotelroomandmealsinNewZealandandforhisflightbacktoCalifornia."Ohwell,"themanlatersaid,"IalwayswantedtoseeNewZealand."（551words）

1.The15-mile-longtrafficjamwasoriginallycausedby________.

A.thewomanwhotappedthepersoninfrontofher

B.thedriverwhoradioedthepolice

C.thepolicewhoblockedtheroad

D.thechangeofthemessagefrom"thereisabum"to"thereisabomb"

2.Beforeheknewit,themanarrivedin________.

A.OaklandB.AucklandC.LosAngelesD.California

3.Theword"plate"（Para.6）ismorepossiblyassociatedwithworkin________.

A.anofficeB.aworkshopC.arestaurantD.ashop

4.Thesentence"Ohwell,IalwayswantedtoseeNewZealand."reflects________.

A.theman'ssenseofhumorB.theman'sfrustration

C.theman'sdisappointme