职称英语理工A阅读判断练习(十)

职称英语理工A阅读判断练习⑼

Sony'sVisionForTheFuture

BeingpresidentofSonyCorporation，Iamoftenaskedbythisquestion：With

digitalcamerasanddigitalcamcorders（摄像机）,whatwillbethefutureofdigital

imaging?

In1997,optimistsseenon-traditiOnalcameras~digitalcamerasachievingsales

ofonemillionunitsinJapan.Wearesellinganewdigitalcamera.Eventhoughthe

priceisquitehigh,itissellingwell.Andlaserandink-jetprintershaveimproved

greatlyforprintingcolourpictures.Buttraditionalpicturesarestillmorepopular

thanthosefromtoday'selectroniccameras.Becauseofthat,traditionalcameras

anddigitalcameraswillco-existforalongtime.

IfyouwantmetosumupSony'svisionforthenextfewyears,allIcansayis

thattherewillbeabigchange.WecanrunourbusinessatSonybasedontoday's

technologies~whichmeansthedigitalisationofaudioandvideo.Butbeyond2000,

therewillbeabigchangeandweshouldbeprepared.Thiswillbethenetwork

environment.Sowearepreparingforabigchangeintechnologiesandforachange

inthewayofthinkingaswell.

Wecelebrateour50~anniversarythisyear（1997）,andthiscoincides（与..一

致）withwhatIcallthetransistorcycle,whichhasalsolastedfiftyyears.Sincewe

startedusingtransistorsinradios,theelectronicindustryhasundergoneabig

evolution.Butanewtechnologywavestartedwiththeinventionofthe

microprocessor,about14or15yearsago.Mytheoryisthateachbusinesscycle

lasts50years,withonecycleoverlapping（重叠）another.Theinformationage

started15yearsagowithmicroprocessorsandforanother10yearsitwillbeinthe

takeoffstage.Likeanairport,a747approachingtheendoftherunwayisstill

gatheringspeed.Soforinformationtechnology,foranotherfivetosevenyears

therewillnotbesomuchchange,onlyincreasingspeed.Butafterthatyoufly.

Whatthatwillmean,Icannotforesee.I'mjustpreparingforthetakeoffstagewhile

I'mpresident.Thejobofthenextgenerationwillbemoreimportant.I'mjust

in-between.

31WhydoesthepresidentofSonyCorporationmentionrestaurantsinthefirst

paragraph?

ATopraiseJapaneserestaurantsforofferinggoodservices.

BToexplainthatJapaneserestaurantsaredistinctive.

CToexplainwhathasjustbeensaid.

DToemphasizethatrestaurantsareallalike.

32Whatisthepresident'sviewondigitalcamerasandtraditionalones?

ADigitalcameraswillbecheaperthantraditionalonesinthenearfuture.

BDigitalcamerasandtraditionalcameraswillco-existforever.

CThepricesofdigitalcameraswillgodownverysoon.

DDigitalcameraswillnottaketheplaceoftraditionalonesinthenextfew

years.

33Whatwilltakeplaceinthenextfewyears,accordingtothepresident?

AAbigchangeintechnologiesandinthewayofthinking.

BAchangeindigitalisation.

CAchangeinthewayofmanufacturing.

DAchangeinthebusinesscycle.

34Howlongdoeseachbusinesscyclelast,accordingtothepresident?

A10years.

B14orl5years.

C25years.

D50years.

35Whatdoesthepresidentsayheisdoing?

AHeisdesigningjobsforthenextgeneration.

BHeispreparingforthe'fly'stage.

CHeisdoingsomethingforthetakeoffstage.

DHeisflyinganaircraft.

【参考答案】

31.C32.D33.A34.D35.C

职称英语理工A阅读判断练习⑹

MotionSickness

OnJuly4,1982,aftersevendaysorbitingtheearth,astronautsThomasK.

MattinglyandHenryW.Hartsfieldreturnedhome.Althoughnotallofthe

experimentsonboardworkedproperly,theflightbasicallyseemedtobeasuccess

exceptforone"little"thing:earlyintheflight,astronautHartsfieldbecame"seasick".

ThomasMattingly,whoisalsoajetpilotandishighlyresistanttomotion

sicknessonearth,didmuchbetter.Mattinglysailedthroughspacewithasteady

stomach.ButnooneknowswhyHartsfieldfeltuneasyandMattinglydidnot.

Whydoesmotionmakesomepeopleill?

Doctorsbelievethatmotionsicknessiscausedbyadisturbanceintheinnerear.

Ourearsdomorethangiveushearing.Apartoftheearsgivesusasenseofbalance

andhelpsmakeusawareofwhetherwearerightsideuporupsidedown.

Ifyouknowthatyougetcarsickorseasick,whatcanyoudo?

Speaktoyourdoctor.Therearecertainmedicinesavailablethatcanhelpstop

thatuneasyfeeling.Butmanyofthemcanalsomakeyousleepy.Usuallytheywork

besttakenbeforeyoubeginfeelingill.

Perhaps,sincemotionsicknessissuchabigprobleminouterspace,researchers

maysoonfindawaytocuretheastronauts-andthoseofuswhostayonearth.

16Floatinginspacefortoolongatimemayalsodoharmtoone'slungsand

heart.

ARightBWrongCNotmentioned

17Attheendoftheflight,Hartsfieldbecame"seasick".

ARightBWrongCNotmentioned

18MattinglywasmuchthinnerthanHartsfield.

ARightBWrongCNotmentioned

19RussianandAmericanscientistsareworkingtogethertosolvetheproblemof

motionsicknessinastronauts.

ARightBWrongCNotmentioned

20Untrainedciviliansaremorelikelytosufferfrommotionsicknessina

spacecraft

ARightBWrongCNotmentioned

21Themotionsicknesssomeastronautssufferedfromduringspacetravelhad

beencausedbythedefectivedigestivesystem.

ARightBWrongCNotmentioned

22Peoplesufferingfrommotionsicknessduringspacetravelcanalleviateits

symptomsbyeatingordrinkingsomething.

ARightBWrongCNotmentioned

【参考答案】

1.C2.B3.C4.A5.A6.B7.C

职称英语理工A阅读判断练习(10)

Laughter

ThereisanoldsayinginEnglish："Laughteristhebestmedicine".Untilrecently,

fewpeopletookthesayingveryseriously.Now,however,doctorshavebegunto

investigatelaughterandtheeffectsithasonthehumanbody.Theyhavefound

evidencethatlaughterreallycanimprovepeople'shealth.

Testswerecarriedouttostudytheeffectsoflaughteronthebody.People

watchedfunnyfilms,whiledoctorscheckedtheirheartrate,bloodpressure,

breathingandmuscles.Itwasfoundthatlaughterhassimilareffectstophysical

exercise.Itincreasesbloodpressure,theheartrateandtherateofbreathing;italso

worksseveralgroupsofmusclesintheface,thestomach,andeventhefeet.If

laughterexercisesthebody,itmustbebeneficial.

Othertestshaveshownthatlaughterappearstobecapableofreducingthe

effectofpainonthebody.Inoneexperimentdoctorsproducedpainingroupsof

studentswholistenedtodifferentradioprograms.Thegroupwhichtoleratedthe

painforthelongesttimewasthegroupwhichlistenedtoafunnyprogram.The

reasonwhylaughtercanreducepainseemstobethatithelpstoproduceendorphins

（内啡肽）inthebrain.Thesearenaturalchemicalswhichdiminishbothstressand

pain.

Asaresultofthesediscoveries,somedoctorsandpsychiatrists（精神病学）in

theUnitedStatesnowholdlaughterclinics,inwhichtheytrytoimprovetheir

patients'conditionbyencouragingthemtolaugh.Theyhavefoundthateveniftheir

patientsdonotreallyfeellikelaughing,makingthemsmileisenoughtoproduce

beneficialeffectssimilartothosecausedbylaughter.

36Welearnfromthefirstparagraphthatlaughter

Aisgoodforone'shealth.

Bisrelatedtosomeillness.

Chasbeeninvestigatedlongsince.

Dhasnoeffectonthebody.

37Doctorshavefoundthatlaughter

Akeepsdownbloodpressure.

Bhassimilareffectstophysicalexercise.

Cdecreasestheheartrate.

Dincreasesstress.

38WhichofthefollowingstatementsisNOTtrueoflaughter,accordingtothe

passage?

AItreducespain,

BItexercisesthebody.

Citimprovesthebody'simmunesystem.

DItcancurecancer.

39Inalaughterclinic,doctors

Alaughattheirpatients.

Bencouragetheirpatientstolaugh.

Csmilewhentheydon'tfeellikelaughing.

Dneverstoplaughing.

40Thewriter'sattitudetowardslaughteris

Acritical.

Bdoubtful.

Cpositive.

Dnegative.

【参考答案】

36.A37.B38.D39.B40.C

职称英语理工A阅读判断练习⑴

阅读判断题：

阅读下面这篇短文，短文后列出了7个句子，请根据短文的内容对每个句子

做出判断。如果该句提供的是正确信息，请选A;如果该句提供的是错误信息，请

选B;如果该句的信息文章中没有提及，请选C.

MadScientistStereotypeOutdated

Dopeoplestillimagineaphysicistasabeardedmaninglassesorhastheimage

ofthemadscientistchanged?TheInstituteofPhysicssetouttofindoutwhetherthe

stereotypeofaphysics'boffin'（科学家）stillexistsbyconductingasurveyon

shoppersinLondon.Thepeoplewereaskedtoidentifythephysicistfroma

photographofaline-upofpossiblesuspects.98percentofthoseaskedgotitwrong.

Themajorityofpeoplepickedawhitemaleofaround60,wearingglassesandwitha

whitebeard.

Whilethisstereotypemayhavebeentheimageofanaveragephysicistfifty

yearsago,therealityisnowverydifferent.Since1960thenumberofyoungwomen

enteringphysicshasdoubledandtheaverageageofaphysicistisnow31.

Thestereotypeoftheabsent-mindedscientisthaslastedalongtimebecause

themediaandHollywoodhelppromotetheimageofmeninwhitelabcoatswith

glassessittingbyblackboardsfullofequations（等式）orworkingwithfizzing（嘶嘶

响）testtubes.Thesestereotypesarereallydamagingtosociety.Verygoodschool

childrenareputoffstudyingsciencebecausetheydon'tseepeoplelikethemselves

ontelevisionorinmagazinesdoingscience.Theysimplydon'trelatetothemedia's

imageofthemadscientist.

Thisisonereasonwhyfeweryoungpeoplearechoosingtodoscienceat

university.Ifwewanttoencouragemoreyoungpeopletostudysciencesubjects,we

needtochangethisimageofthescientistandmakesciencecareersmoreattractive.

Butwemustalsodevelopchildren'sinterestinscience.

1Mostpeoplehavesimilarideasofwhataphysicistlookslike.

ARight

BWrong

CNotmentioned

2ThemajorityofphysicistsinBritaintodayareCambridgegraduates

ARight

BWrong

CNotmentioned

3Themediaandthecinemahaveplayedaroleinpromotingtheimageofthe

madscientist.

ARight

BWrong

CNotmentioned

4Therewillbemorewomenscientiststhanmenscientistsin.thefuture

ARight

BWrong

CNotmentioned

ARight

BWrong

CNotmentioned

6Theimageofthemadscientistisreallyencouragingtosociety.

ARight

BWrong

CNotmentioned

7TheInternationalScienceOlympiadsareheldonceeverytwoyears.

ARight

BWrong

CNotmentioned

【参考答案】1.A2.C3.A4.C5.A6.B7.B

职称英语理工A阅读判断练习⑵

阅读判断题

阅读下面这篇短文，短文后列出了7个句子，请根据短文的内容对每个句子

做出判断。如果该句提供的是正确信息，请选A;如果该句的是错误信息，请选

B;如果该句的信息文章中没有提及，请选C.

MotherNatureShowsHerStrength

Tornadoes（龙卷风）andheavythunderstormsmovedacrosstheGreatLakes

andintoTrumbullCountyonSaturdayevening.Thestormsweredramaticand

dangerous.

GeorgeSnyderwasdrivingthefiretruckdownRoute88whenhefirstnoticed

thatafunnel（漏斗状的）cloudwasbehindhim."1stoppedthetruckandwatched

thefunnelcloud.Itwasabout100feetoffthegroundandIsawitgoupanddown

forawhile.ItwasmovingtowardBradleyRoadandthensuddenlyitdisappeared,"

Snydersaid

Snyderonlysawoneofthefunnelcloudsthatpassedthroughnortheastern

OhioonSaturday.InTrumbullCounty,atornadoturnedtreesontotheirsides.Some

treesfellontohousesandcars.Othertreesfellintotelephoneandelectricalwiresas

theywentdown.

AmandaSymcheckwashavingapartywhenthestormbegan."1knew

somethingwaswrong,"shesaid.'1sawtheskygogreenandpink（粉红色）.Thenit

soundedlikeatrainrushingtowardthehouse.Istartedcryingandtoldeveryoneto

gotothebasementforprotection."

Thetornadocausedalotofdamagetocarsandhousesinthearea.Itwilltakea

longtimeandmuchmoneytorepaireverything.Therewasalsoseriouswater

damagefromthethunderstorms.Theheavyrainsandhighwindcausedthepowerto

gooutinmanyhomes.

Thestormscausedseriousfloodinginareasneartheriver.Morethanfour

inchesofrainfellinpartsofTrumbullCounty.Theriverwassohighthatthewater

ranintostreetsandhouses.Manystreetshadtobeclosedtocarsandtrucksbecause

ofthehighwater.Thismadeitdifficultforfiretrucks,policecars,andotherrescue

vehiclestohelppeoplewhowereintrouble.

Manypeoplewholiveneartheriverhadtoleavetheirhomesfortheirown

safety.Somepeoplereportedfivefeetofwaterintheirhomes.Localandstate

officialsopenedemergencysheltersforthepeoplewhowereevacuated（撤走）.The

RedCrossservedmealstothem.

"Thiswasareallyintensestorm,"saidSnyder."Peoplewereafraid.Mother

Naturecanbefierce.Wewereluckythistime.Noonewaskilled."

1TheweatherwasniceinTrumbullCountyonSaturdayevening.

ARight

BWrong

CNotmentioned

2GeorgeSnyderwasafirefighter.

ARight

BWrong

CNotmentioned

3AmandaSymcheckwashavingapartyinthebasementwhenthestormbegan.

ARight

BWrong

CNotmentioned

4Powersupplysystemwasnotdamagedduringthestorm.

ARight

BWrong

CNotmentioned

5TherehadnotbeensuchaseverestorminTrumbullCountyforahundred

years.

ARight

BWrong

CNotmentioned

6Rescuevehicleshadahardtimegettingtopeople.

ARight

BWrong

CNotmentioned

7Severalpeopleweremissingduringthestorm.

ARight

BWrong

CNotmentioned

【参考答案】1.B2.A3.B4.B5.C6.A7.C

职称英语理工A阅读判断练习(8)

PlantsinDesert

Onlyspecialplantscansurvivetheterribleclimateofadesert,fortheseare

regionswheretheannualrangeofthesoiltemperaturecanbeover75℃.

Furthermore,duringthesummertherearefewcloudsintheskytoprotectplants

fromthesun'sray.Anotherproblemisthefactthattherearefrequentlystrong

windswhichdrivesmall,sharpparticlesofsandintotheplants,tearingand

damagingthem.Themostdifficultproblemforallformsofplantlife,however,is

thefactthattheentireannualrainfalloccursduringafewdaysorweeksinspring.

Grassesandflowersindesertsurvivefromoneyeartothenextbyexisting

throughthelong,hot,dryseasonintheformofseeds.Theseseedsremain

inactiveunlesstherightamountofrainfalls.Ifnorainfalls,orifinsufficientrain

falls,theywaituntilthenextyear,orevenstillthenext.Anotherfactorthathelps

theseplantstosurviveisthefactthattheirlifecyclesareshort.Bythetimethatthe

waterfromthespringrainsdisappears-----justafewweeksafteritfalls------such

plantsnolongerneedany.

Theperennialshavespecialfeatureswhichenablethemtosurviveasplantsfor

severalyears.Thus,nearlyalldesertperennialshaveextensiverootsystemsbelow

groundandasmallshootsystemaboveground.Thelargerootnetworkenablesthe

planttoabsorbasmuchwateraspossibleinashorttime.Thesmallshootsystem,

ontheotherhand,considerablylimitswaterlossbyevaporation.

16.Ordinaryplantsareunabletosurviveinthedesertmainlybecauseofthe

changeableweather.

A.RightB.WrongC.Notmentioned

A.RightB.WrongC.Notmentioned

18.Grassesandflowersinthedesertwhoselifecyclesareshortshowstheir

abilitytoadapttothequickdisappearanceofrainwaterthereafteritfallsinspring.

A.RightB.WrongC.Notmentioned

19.Winteristhetoughestseasonforgrassesandflowerstosurviveindesert

A.RightB.WrongC.Notmentioned

20.Theshootsystemofperennialscanhelptheplantsabsorblessofthesun's

ray.

A.RightB.WrongC.Notmentioned

21.Thethemeofthesecondlastparagraphiswhytheperennialscansurviveas

plantsforseveralyears.

A.RightB.WrongC.Notmentioned

22.Desertperennialslosetheirleavesaftertherainyseasonjustastreeslose

theirsinwetterclimatesbeforewinterarrives,butthereasonsforthisfeatureare

different.

A.RightB.WrongC.Notmentioned

【参考答案】

16.B17.A18.A19.C20.B21.A22.B

职称英语理工A阅读判断练习⑶

阅读判断题

ADolphinandanAstronomer

ThedolphinwantedSagantoscratchhisstomachagain,astheastronomerhad

donetwicebefore.ElvarlookedupatSagan,waiting.Then,afteraminuteorso,the

dolphinleaptupthroughthewaterandmadeasoundjustliketheword"more".The

astonishedastronomerwenttothedirectoroftheinstituteandtoldhimaboutthe

incident."Oh,yes.That'soneofthewordsheknows,"thedirectorsaid,showingno

surpriseatall.

Dolphinshavebiggerbrainsinproportiontotheirbodysizethanhumanshave,

andithasbeenknownforalongtimethattheycanmakeanumberofsounds.What

ismore,thesesoundsseemtohavedifferentfunctions,suchaswarningeachother

ofdanger.Soundtravelsmuchfasterandmuchfurtherinwaterthanitdoesinair.

Thatiswhythepartsofthebrainthatdealwithsoundaremuchbetterdevelopedin

dolphinsthaninhumans.Butcanitbesaidthatdolphinshavea'language',inthe

realsenseoftheword?Scientistsdon'tagreeonthis.

ARight

BWrong

CNotmentioned

2ThedolphinleaptupintotheairbecauseSaganwastoonearthewater.

ARight

BWrong

CNotmentioned

3Partsofthedolphin'sbrainareparticularlywelldevelopedtohandledifferent

kindsofsound.

ARight

BWrong

CNotmentioned

4Dolphinsarethemostusefulanimalstohumans.

ARight

BWrong

CNotmentioned

5Dolphinstravelfasterinwaterthananyotheranimals.

ARight

BWrong

CNotmentioned

6Somescientistsbelievethatdolphinshavealanguageoftheirown.

ARight

BWrong

CNotmentioned

7Soundscanbecalledalanguageonlywhentheyhaveastructureanda

grammar.

ARight

BWrong

CNotmentioned

【参考答案】1.B2.B3.A4.C5.C6.A7.A

职称英语理工A阅读判断练习⑸

MotherNatureShowsHerStrength

Tornadoes（龙卷风）andheavythunderstormsmovedacrosstheGreatLakesand

intoTrumbullCountyonSaturdayevening.：Thestormsweredramaticand

dangerous.

GeorgeSnyderwasdrivingthefiretruckdownRoute88whenhefirstnoticed

thatafunnel（漏斗状的）cloudwasbehindhim."Istoppedthetruckandwatchedthe

funnelcloud.ltwasabout100feetoffthegroundandIsawitgoupanddownfora

while.ltwasmovingtowardBradleyRoadandthensuddenlyitdisappeared./zSnyder

said.

Snyderonlysawoneofthefunnelcloudsthatpassedthroughnortheastern

OhioonSaturday.InTrumbullCounty,atornadoturnedtreesontotheirsides.Some

treesfeelontohousesandCars.Othertreesfellintotelephoneandelectricalwiresas

theywentdown.

AmandaSymcheckwashavingapartywhenthestormbegan."Iknewsomething

waswrong,"shesaid."Isawtheskygogreenandpink（粉红色）.Thenitsoundedlikea

trainrushingtowardthehouse.Istartedcryingandtoldeveryonetogotothe

basementforprotection//

Thetornadocausedalotofdamagetocarsandhousesinthearea.ltwilltakea

longtimeandmuchmoneytorepaireverything.Therewasalsoseriouswater

damagefromthethunderstorms.Theheavyrainsandhighwindcausedthepowerto

gooutinmanyhomes.

Thestormscausedseriousfloodinginareasneartheriver.Morethanfourinches

ofrainfellinpartsofTrumbullCounty.Theriverwassohightthatthewaterraninto

streetsandhouses.ManystreetshadtobeclosedtoCarsandtrucksbecauseofthe

highwater.'Thismadeitdifficultforfiretrucks.policecars,andotherrescuevehicles

tohelppeoplewhowereintrouble.

Manypeoplewholiveneartheriverhadtoleavetheirhomesfortheirown

safety.Somepeoplereportedfivefeetofwaterintheirhomes.Localandstate

officialsopenedemergencysheltersforthepeoplewhowereevacuated（撤走）.The

RedCrossservedmealstothem.

“Thiswasareallyintensestormo“saidSnyder.'Peoplewereafraid□Mother

Naturecallbefierce.Wewereluckythistime.Noonewaskilled.”

16TheweatherwasniceinTrumbullCountyonSaturdayevening.

ARightBWrongCNotmentioned

17GeorgeSnyderwasafirefighter.

ARightBWrongCNotmentioned

18AmandaSymcheckwashavingapartyinthebasementwhenthestorm

began.

ARightBWrongCNotmentioned

19Powersupplysystemwasnotdamagedduringthestoma.

ARightBWrongCNotmentioned

20TherehadnotbeensuchaseverestorminTrumbullCountyforahundred

years.

ARightBWrongCNotmentioned

21Rescuevehicleshadahardtimegettingtopeople.

ARightBWrongCNotmentioned

22Severalpeopleweremissingduringthestorm.

ARightBWrongCNotmentioned

答案解析

16.答案为B。本题的意思是：星期六傍晚，Trumbull县天气很好。本题句意

思与原文相反。原文第一段上来就讲到当时龙卷风和暴风雨滚滚而来。

17.答案为A。本题的意思是：GeorgeSnyder是一位消防员。原文虽然没有

直说他是干什么的，但提到他正开着消防车(firetruck),由此可以推断他是消防员。

18.答案为B。本题可译为：暴风雨来临时AmandaSymcheck与别人正在地下

室里聚会。原文是说他们正在聚会，但没说在地下室里聚会。而是说暴风雨来临

后，他们跑到地下室里躲藏。

19.答案为B。本题可译为：暴风雨中供电系统没遭到破坏。第五段最后一句

说大风和暴雨使一些家庭的供电出现了问题，与题项矛盾，故选B。

20.答案为C。本题可译为：一百年来，Trumbull还没有遇到过这么大的暴风

雨呢。此句的意思文章中根本没有提到，故选C。

21.答案为A。本题的意思是：救援车辆费了很大劲才把人救出来。此句的意

思在倒数第三段最后一句提到了，故选A。

22.答案为C。本题可译为：暴风雨中有几个人失踪了。此句的意思文章中没

有提到，故选C。

职称英语理工A阅读判断练习(7)

PlantsinDesert

Onlyspecialplantscansurvivetheterribleclimateofadesert,fortheseare

regionswheretheannualrangeofthesoiltemperaturecanbeover75℃.

Furthermore,duringthesummertherearefewcloudsintheskytoprotectplants

fromthesun'sray.Anotherproblemisthefactthattherearefrequentlystrong

windswhichdrivesmall,sharpparticlesofsandintotheplants,tearingand

damagingthem.Themostdifficultproblemforallformsofplantlife,however,is

thefactthattheentireannualrainfalloccursduringafewdaysorweeksinspring.

Grassesandflowersindesertsurvivefromoneyeartothenextbyexisting

throughthelong,hot,dryseasonintheformofseeds.Theseseedsremain

inactiveunlesstherightamountofrainfalls.Ifnorainfalls,orifinsufficientrain

falls,theywaituntilthenextyear,orevenstillthenext.Anotherfactorthathelps

theseplantstosurviveisthefactthattheirlifecyclesareshort.Bythetimethatthe

waterfromthespringrainsdisappears-----justafewweeksafteritfalls------such

plantsnolongerneedany.

Theperennialshavespecialfeatureswhichenablethemtosurviveasplantsfor

severalyears.Thus,nearlyalldesertperennialshaveextensiverootsystemsbelow

groundandasmallshootsystemaboveground.Thelargerootnetworkenablesthe

planttoabsorbasmuchwateraspossibleinashorttime.Thesmallshootsystem,

ontheotherhand,considerablylimitswaterlossbyevaporation.

16.Ordinaryplantsareunabletosurviveinthedesertmainlybecauseofthe

changeableweather.

A.RightB.WrongC.Notmentioned

A.RightB.WrongC.Notmentioned

18.Grassesandflowersinthedesertwhoselifecyclesareshortshowstheir

abilitytoadapttothequickdisappearanceofrainwaterthereafteritfallsinspring.

A.RightB.WrongC.Notmentioned

19.Winteristhetoughestseasonforgrassesandflowerstosurviveindesert

A.RightB.WrongC.Notmentioned

20.Theshootsystemofperennialscanhelptheplantsabsorblessofthesun's

ray.

A.RightB.WrongC.Notmentioned

21.Thethemeofthesecondlastparagraphiswhytheperennialscansurviveas

plantsforseveralyears.

A.RightB.WrongC.Notmentioned

22.Desertperennialslosetheirleavesaftertherainyseasonjustastreeslose

theirsinwetterclimatesbeforewinterarrives,butthereasonsforthisfeatureare

different.

A.RightB.WrongC.Notmentioned

【参考答案】

16.B17.A18.A19.C