大学英语六级模拟试卷80

大学英语六级模拟试卷80

一、作文（本题共/题，每题上0分，共1分。）

1、Forthispart,youarcallowed30minutestowriteashortessayonthetopicDoWe

Need"Nevergiveup"?Youshouldwriteatleast150wordsfollowingtheoutlinegiven

belowinChinese:1.“永不言弃”一直被认为是一种积极的生活态度，是个人成功的

关键因素2.但是，也有人认为适当的放弃才是明智的选择3.你对此的看法及理

ft]DoWeNeed"Nevergiveup"?

标准答案:DoWeNeed"Nevergiveup"?Itiswidelyacceptedthat"Nevergiveup",a

strongandpositivelifeattitude,isthekeyforindividualsuccessonthegroundsthat

permanentpersistencemayboostourconfidence,str

知识点解析：暂无解析

二、快速阅读理解（本题共70题，每题分，共70

分。）

BluetoothWhenyouusecomputers,entertainmentsystemsortelephones,thevarious

picccs-andpartsofthesystemsmakeupacommunityofelectronicdevices.These

devicescommunicatewitheachotherusingavarietyofwires,cables,radiosignalsand

infraredlight（红外线）beams,andanevengreatervarietyofconnectorsandplugs.The

artofconnectingthingsisbecomingmoreandmorecomplexeveryday.AndBluetooth

hasnowbecomeanewpopularmethodofconnectingdevicesthatcanstreamlinethe

process.ABluetoothconnectioniswirelessandautomatic,andittakessmall-area

networkingtothenextlevelbyremovingtheneedforuserinterventionandkeeping

transmissionpowerextremelylowtosavebatterypower.BluetoothOperationBluetooth

networkingtransmitsdatavialow-powerradiowaves.Itcommunicatesonafrequencyof

2.45gigahertz（千3K赫"actuallybetween2.402GHzand2.480GHz,tobeexact）.This

frequencybandhasbeensetasidebyinternationalagreementfortheuseofindustrial,

scientificandmedicaldevices（ISM）.Anumberofdevicesthatyoumayalreadyusetake

advantageof（hissameradio-frequencyband.Babymonilors（微型监视器）,garage-door

openersandthenewestgenerationofcordlessphonesallmakeuseoffrequenciesinthe

ISMband.OneofthewaysBluetoothdevicesavoidinterferingwithothersystemsisby

sendingoutveryweaksignalsofabout1milliwatt.Bycomparison,themostpowerful

cellphonescantransmitasignalof3watts.Thelowpowerlimitstherangeofa

Bluetoothdevicetoabout10meters（32feet）,cuttingthechancesofinterferencebetween

yourcomputersystemandyourportabletelephoneortelevision.Evenwiththelow

power,Bluetoothdoesn'trequirelineofsightbetweencommunicatingdevices.Thewalls

inyourhousewon'tstopaBluetoothsignal,makingthestandardusefulforcontrolling

severaldevicesindifferentrooms.Bluetoothcanconnectupioeightdevices

simultaneously.Withallofthosedevicesinthesame10-meter（32-foot）radius,you

mightthinkthey'dinterferewithoneanother,butit'sun-likely.Bluetoothusesa

techniquecalledspread-speclrum（扩展频谱）frequencythatmakesitrareformorethan

onedevicetobetransmittingonthesamefrequencyatthesametime.Inthistechnique,a

devicewilluse79individual,randomlychosenfrequencieswithinadesignatedrange,

changingfromonetoanotheronaregularbasis.InthecaseofBluetooth,thetransmitters

changefrequenciesL600timeseverysecond,meaningthatmoredevicescanmakefull

useofalimitedsliceoftheradiospectrum.SinceeveryBluetoothtransmitteruses

sprcad-spcctrumtransmittingautomatically,it'sunlikelythat（wotransmitterswillbeon

thesamefrequencyatthesametime.Thissametechniqueminimizestheriskthat

portablephonesorbabymonitorswilldisruptBluetoothdevices,sinceanyinterference

onaparticularfrequencywilllastonlyatinyfractionofasecond.Piconets（个人域网络）

Let'ssayyouhaveatypicalmodernlivingroomwiththetypicalmodernstuffinside.

There'sanentertainmentsystemwithastereo,aDVDplayer,asatelliteTVreceiverand

atelevision;there'salsoacordlesstelephoneandapersonalcomputer.Eachofthese

systemsusesBluetooth,andeachformsitsownpiconcttotalkbetweenthemainunitand

peripheral（夕卜围设备）.ThecordlesstelephonehasoneBluetoothtransmitterinthebase

andanotherinthehandset.Themanufacturerhasprogrammedeachunitwithanaddress

thatfallsintoarangeofad-dressesithasestablishedforaparticulartypeofdevice.

Whenthebaseisfirstturnedon,itsendsradiosignalsaskingforaresponsefromany

unitswithanaddressinaparticularrange.Sincethehandsethasanaddressintherange,

itresponds,andalinynetworkisfonnud.Now,evenifoneofthesedevicesshould

receiveasignalfromanothersystem,itwillignoreitsinceit'snotfromwithinthe

network.Thecomputerandentertainmentsystemgothroughsimilarroutines,

establishingnetworksamongaddressesinrangesestablishedbymanufacturers.Oncethe

networksareestablished,thesystemsbegintalkingamongthemselves.Eachpiconethops

randomlythroughtheavailablefrequencies,soallofthepiconetsarecompletely

separatedfromoneanother.Nowthelivingroomhasthreeseparatenetworksestablished,

eachonemadeupofdevicesthatknow（headdressoftransmittersitshouldlisten（oand

（headdressofreceiversitshouldtalkto.Sinceeachnetworkischangingthefrequencyof

itsoperationthousandsoftimesasecond,it'sunlikelythatanytwonetworkswillbeon

thesamefrequencyatthesametime.Ifitturnsoutthattheytire,thentheresulting

confusionwillonlycoveratinyfractionofasecond,andsoftwaredesignedtocorrectfor

sucherrorsweedsouttheconfusinginformationandgetsonwiththenetwork'sbusiness.

BluetoothSecurityInanywirelessnetworkingsetup,securityisaconcern.Devicescan

easilygrabradiowavesouto:theair,sopeoplewhosendsensitiveinformationovera

wirelessconnectionneedtotakeprecautionstomakesurethosesignalsaren'tintercepted.

Bluetoothtechnologyisnodifferentit'swirelessandthereforesusceptibletospyingand

remoteaccess,justlikeWi-Fiissusceptibleifthenetworkisn'tsecure.WithBluetooth,

though,theautomaticnatureoftheconnection,whichisahugebenefitintermsoftime

andeffort,isalsoabenefittopeoplelookingtosendyoudatawithoutyourpermission.

Bluetoothoffersseveralsecuritymodes,anddevicemanufacturersdeierminewhich

modetoincludeinaBluetooth-enabledgadget（酉己件）.Inalmostallcases,Bluetoothusers

canestablish"trusteddevices"thatcanexchangedatawithoutaskingpermission.When

anyotherdevicetriestoestablishaconnectiontotheuser'sgadget,theuserhastodecide

(oallowit.Servicelevelsecurityanddevice-levelsecurityworktogether(oprotect

Bluetoothdevicesfromunauthorizeddatatransmission.Securitymethodsinclude

authorizationandidentificationproceduresthatlimittheuseofBluetoothservicestothe

registereduserandrequirethatusersmakeaconsciousdecisiontoopenafileoraccepta

datatransfer.Aslongasthesemeasuresareenabledontheuser'sphoneorotherdevice,

unauthorizedaccessisunlikely.AusercanalsosimplyswitchhisBluetoothmodeto

"non-discoverable"andavoidconnectingwithotherBluetoothdevicesentirely.Ifauser

makesuseoftheBluetoothnetworkprimarilyfbrsynchingdevicesathome,thismight

beagoodwaytoavoidanychanceofasecuritybreachwhileinpublic.Still,earlycell­

phoneviruswritershavetakenadvantageofBluetooth'sautomatedconnectionprocessto

sendoutinfectedfiles.However,sincemostcellphonesuseasecureBluetooth

connectionthatrequiresauthorizationandauthenticationbeforeacceptingdatafroman

unknowndevice,theinfectedfiletypicallydoesn'tgetveryfar.Otherproblemslike

"bluejacking","bluebugging"and"CarWhisperer"haveturnedupasBluetooth-specific

securityissues.Likeacomputersecurityhole,thesevulnerabilitiesareaninevitable

resultoftechnologicalinnovation,anddevicemanufacturersarcreleasingfirmware

upgradesthataddressnewproblemsastheyarise.

2、Bluetoothischangingsmall-areanetworkingintoawirelessandautomatic

connectionwithnoneedforuserinterventionandlowneedoftransmissionpower.

A、Y

B、N

C、NG

标准答案：A

知识点解析：本题定位信息是connection和transmissionpower,与蓝牙网的连接和

耗能有关，从而锁定文章第二段。该段最后一句提到，ABluetoothconnectionis

wirelessandautomatic,andittakessmall-areanetworkingtothenextlevelbyremoving

theneedfbruserinterventionandkeepingtransmissionpowerextremelylowtosave

batterypowero题干表述与文章事实一致，因此答案为Y。

3、Bluetoothnetworkingtransmitsdatavialow-powerradiowavesbetween2.402GHz

and2.480GHz.

A、Y

B、N

C、NG

标准答案：A

知识点解析：本题定位信息是low-powerradiowaves,涉及到了蓝牙传输信息的频

率，从而锁定BlueloolhOperation部分。该部分第一段提到，Ilcommunicatesona

frequencyof2.45gigahertz(actuallybetween2.402GHzand2.480GHz,tobeexact)。

题干中表述的蓝牙使用频率与文章事实一致，故判断本题正确。

4、MakingsurethatBluetoothanditsconnecteddevicesdon'tinterferewithoneanother

canbedifficult.

A、Y

B、N

C、NG

标准答案：B

知识点解析：根据定位信息是Bluetooth和connecteddevices,与蓝牙的连接设备有

关，从而锁定BluetoothOperation部分。该部分第四段前两句提到，Bluetoothcan

connectuptoeightdevicessimultaneously...youmightthinkthey5dinterferewithone

another,butifsunlikelyoFl此可知，蓝牙连接的这八个设备之间不会相互干扰。

题干中的difficult和文中的unlikely意思相反，因此答案为N。

5、Withthedevelopmentofspread-spectrumtechnique,wemayuseBluetooth

connectionasasubstituteforcellphone.

A、Y

B、N

C、NG

标准答案：C

知识点解析：本题定位信息是spread-spectrum,从而锁定BluetoothOperation部

分。该部分只是在第四段最后一句提到了与手机相关的信息，Thissametechnique

minimizestheriskthatportablephonesorbabymonitorswilldisruptBluetooth

devices,但是并未提到题干中所说的“随着扩展频谱技术的发展，我们可以用蓝牙

技术来代替手机的应用”。题干表述在文中找不到依据，因此答案为NG。

6、Anytwonetworksinpiconctsisunlikelytobeonthesamefrequencysimultaneously

becauseeachnetworkischangingitsthousandsoftimesasecond.

标准答案：frequencyofoperation或operationalfrequency

知识点解析：本题定位信息是piconets,从而锁定Piconeis部分。该部分最后一段

倒数第二句提到了同一时间两个网络的频率不可能相同的原因：eachnetworkis

changingthefrequencyofitsoperationthousandsoftimesasecondo故本题应填入

frequencyofoperation或将operation改成形容词修饰frequency>即也可填

operationalfrequencyo

7、Manufacturershavedevelopedtocorrecterrorslikereceiving

signalofthesamefrequencyfromastrangedevice.

标准答案：software

知识点解析：本题定位信息是correcterrors,从而锁定Piconets部分。该部分最后

——句提至IJ,...andsoftwaredesignedtocorrectforsucherrorsweedsouttheconfusing

informationandgetsonwiththenetwork'sbusiness<,由此可知,有专门的软件

(software)来解决两个网络同时使用一个频率的情况。故本题应填入software。

8、SecurityisalsOabigconcernasBluetoothtechnologyhasanessenceof

标准答案：wirelessnetworking

知识点解析：本题定位信息是securily,从而锁定BlueloclhSecurity部分。该部分

第一段前三句提至U，Inanywirelessnetworkingsetup,securityisa

concern...Bluetoothtechnologyisnodifferent—ifswireless.由此可知，蓝牙技术的

安全问题源于它的无线网络逐接的本质。故本题应填入wirelessnetworkingo

9、PeoplecansendyoudatawithoutyourpermissionbecausetheBluetoothconnection

is.

标准答案：automatic

知识点解析：本题定位信息是send和wiihoulyourpermission,从而锁定Bluetooth

Security部分。该部分第一段最后一句提到，WithBluetooth,though,theautomatic

natureoftheconnection...isalsoabenefittopeoplelookingtosendyoudatawithout

yourpermissiono由此可知，是蓝牙连接技术的自动性方便了一些人不经允许就能

发信息给你。故木题应填入automatico

10^OnesecuritymodeofferedbyBluetoothisthatdatamaybeexchangedfreelyamong

thedevicesBluetoothusersestablishas.

标准答案：trusted

知识点解析：本题定位信息是securitymode,从而锁定BluetoothSecurity部分。该

部分第二段第二句提到，Inalmostallcases,Bluetoothuserscanestablish4*trusted

,,

dcviccsthatcanexchangedatawithoutaskingpermission0由此可知，只要蓝牙用户

将一些设备设定为“可信任的“，自由数据交换就能实现了。故本题应填入trusted。

11、VulnerabilitiesofBluetoothlike"bkiejacking"areinthe

developmentoftechnology.

标准答案：aninevitableresult

知以点解析：本题定位信息是vulnerabHities和bluejacking,从而锁定Bluetooth

Security部分。该部分最后两句提到，Otherproblemslike“bluejacking"...Likea

computersecurityhole,thesevulnerabilitiesareaninevitableresultoftechnological

innovationorfl此可知，这些缺陷是技术革新不可避免的结果，故本题应填入an

inevitableresult<>

三、听力短对话（本题共8题，每题7.0分，共8分。）

12、

A^She'shappythatthestudentcenterisgettingmorecomputers.

B、She'llletthemanusehercomputertodostatisticsassignments.

C、Shewilltakeastatisticscourseinthestudentcentersoon.

D、She'dliketobuyacomputerverysoon.

标准答案：D

知识点解析：M:I'msofrustrated.Wearesupposedtodoourassignmentsfbrstatistics

onthecomputer.Buttheonesinthestudentcenterarealwaystiedup.W:Iknowwhat

youmean.TmlookingforwardtothedaywhenIcanaffordtogetmyown.Q:What

doesthewomanmean?

13、

A^Sheisveryhappytoobeytherules.

B、Sheisveryinterestedintherules.

C、Sheisirritatedbysomanyrules.

D、Sheissorryfortherules.

标准答案：C

知识点解析：M:Besuretolockallthedoorsandwindowswheneveryougoout.And

nevergiveyourfront-doorkeytoanyone.Also,beforegoingout,cheekallthe

appliancesandturneverythingoff.W:I'mgoingtoblowafuseinmybrainifIhaveto

rememberanymorerules.Q:Whatisthewoman'sreactiontotherules?

14、

A、PublicBusesarefastandcheaptransportationtools.

B、Parkingisbecomingabigproblem.

C、Subwaytrainsarcevensaferthantaxies.

D、Taxiesaremoreconvenientthanbuses.

标准答案：B

知识点解析：M:Manypeopleprefertakingbusesorthesubwayoreventaxiesbecause

parkingisgettingtobearealheadacheinsomepartsofthecity.W:Thatdoesn't

surpriseme.Q:Whatconclusioncanwedrawfromthisconversation?

15、

A、He'salsointerestedinAmericanliterature.

B、Hehasn'tdecidedifhewouldtaketheliteratureclass.

C、Thewomanshouldhavealreadyfinishedherpaper.

D、Thewoman'stopicmaynotbeappropriate.

标准答案：D

知识点解析：W:Ifinallydecidedonmyliteraturepaper：Iamgoingtofocuson

Americanmodernwomenwriters.M:Thatissobroad,doyouthinkitwillbe

approved?Q:Whatdoesthemanimply?

16、

A、Shefeelssorryowingtoiheman'sfailure.

B、Shedidnobetterthanthemaninthecontest.

C、Sheisoptimisticthatshewon'tbethelastinthecontest.

D、Shethinksthattheycanwininthecomingcontest.

标准答案：B

知识点解析：M:Ohdear.Iamafraidofbeingthelastagaininthespeechconteston-

Sunday.It,salreadythesecondtimeItookpartinit.W:Beoptimistic.Ihavethe

sameexperience.Let'stryathirdtime.Q:Whatdoesthewomanmostprobablywant

toconvey?

17、

A^Itwon'tbedifferentfromtheothers.

B、Itwillbeunusuallymild.

C、Itwillbewarmandcomfortable.

D、It.willprobablybecold.

标准答案：D.

知识点解析：M:Itisagoodplacetospendmyholidays.Manypeoplesaythewinter

hereisusuallymild.Howdoyoufeel?W:Usually?ButIthinkthisyearitwillbevery

different.Q:Whatdoes（hewomanimplyaboutthiswinter?

18、

A^BylearningEnglishalone.

B、BylearningEnglishhardbeforetest.

C、Bystudyingathersparetime.

D、Bylearningalittleregularly.

标准答案：D

知识点解析：M:Idon'tliketostudyEnglishinmysparetime.BeforeItakenan

Englishtest,I'llstudyhardandIcangetahighmark.W:1prefertolearnabitevery

daytoaccumulateandsolidifyknowledge.AndIhavelimetoplayanddevelop

hobbies.Q:HowdoesthewomanstudyEnglish?

19、

A、Sheisalittletired.

B、Sheisgoingtostudyinthelibrary.

C、Shewantstolistentothemusic.

D、Sheisgoingtomakeareservation.

标准答案：B

知识点解析：M:I'malittletired,soIthinkI'llgotothestudentloungeandlistentoa

littlemusic.Caretoioinme?W:I'dloveto,butIhavetogotohelibrarytoreada

reservedbook.Q:Whycan'lthewomansowiththeman?

四、听力长对话（含3小题）（本题共3题，每题1.0

分,共3分。）

20、

A、Currentissuesineconomics.

B、Choicesfacedbyconservationists.

C、Arecentbiologylecture.

D^Topicsforaresearchpaper.

标准答案：B

知识点解析：Whatarethespeakersmainlydiscussing?

21、

A^Ascarcityofjobsintheirfield.

B、Inadequatetraininginmethodsofbiologicalresearch.

C、Difficultiesinclassifyingallofthevarietiesofowls.

D、Alackoffundingfortheirworkwithendangeredspecies.

标准答案：D'

知识点解析：Whatproblemsdoconservationistshave?

22、

A^Ithasnumeroustraitsincommonwiththespottedowl.

B、Itspopulationisincreasinginrecentyears.

C^Itmaynotsurvivewithoutspecialeffortsofconservationists.

D、Itsroleinthechainofevolutionhasnotyetbeenexamined.

标准答案：C

知识点解析:Whatcanbeinferredaboutthetailedtoad?

五、听力长对话（含4小题）（本题共4题，每题1.0

分,共4分。）

23、

A、Theyarelookingforanapartmenttolivein.

B、Theyarediscussinglivingplacesandchildren'seducation.

C、Theyarccomplainingabouttheirchildren.

D、Theyareplanningibrthenextweekend.

标准答案：B

知识点解析:Whatarethetwospeakersmainlytalkingabout?

24、

A^There'smuchtodobesidesworkandstudy.

B、It'sconvenientfbrpeopletogoanywhere.

C、Thenaturalenvironmentisbeneficialtochildren.

D、Thecounlrysideisaperfectplaceforweekends.

标准答案：C

知识点解析：Whatdoesthemanthinkoflivinginthesuburbs?

25、

A^Thechildrenaretooyoungtobenefitfromcitylife.

B、Evenadultsthemselvescannotgoeverywhereinthecity.

C、Thereisalottoseeanddofbrchildrenandadults.

D^Thereisn'talottoseeanddofbrchildren.

标准答案：C

知识点解析：Whatistheman'sopinionofthecity?

26、

A、Sheisafull-timehousewife.

B、Shedoesnotcareforherchildren.

C^Sheusedtoliveinthesuburbsinherchildhood.

D、Shewillgotoamuseumnextweekend.

标准答案：D

知识点解析：Whatdoweknowaboutthewomanaccordingtotheconversation?

六、听力短文（含3小题）（本题共6题，每题

分,共6分。）

27、

A、Theywereevidentinthedecreasedworldtemperature.

B、Theywereofseveraldays'durationworldwide.

C、TheywerefeltmainlyintheDutchEastIndies.

D、Theywereimmediatelyevidenttotheworld'sscientists.

标准答案：A

知识点解析；What'strueabouttheeffectsofTambora'seruptionaccordingtothe

passage?

28、

A、England'sproximitytothesea.

B、Volcanicashintheatmosphere.

C、Floodinginthearea.

D、PollutioncausedbytheInternationalRevolution.

标准答案：B

知识点解析：WhichwasthecauseofcoldweatherinEnglandfrom1815to1818?

29、

A、Therewasalongintervalbetweencauseandeffect.

B、Theweatherwasdifficuhforustoforecast.

C、Weatherforecastwasinaccurate.

D^Ecologistsdidn'tappearuntilmoderntimes.

标准答案：A

知识点解析：Whydidn'tanyonerealizethecauseofthedeteriorationofthe

agriculturalmarket?

30、

A、Agovernmentdocument.

B、Aliterarywork.

C、Asocialart.

D、Anindividual'screation.

标准答案：C

知识点解析：Accordingtothispassage»whatcanarchitectureberegardedas?

31、

A^Becausetheywerenoteasilyburnedandcanlastlong.

B、Becausetheywereverycheapmaterials.

C、Becausetheycouldbefoundhereandthere.

D^Becausetheycouldaddartisticvaluetobuildings.

标准答案：A

知识点解析：Whywerestoneandmarbleusedasbuildingmaterialsinthepast?

32、

A^ArchitectureandLiterature.

B、DevelopmentofArchitecture.

C、ClassificationofArchitecture.

MaterialsofArchitecture.

标准答案：B

知识点解析:Whichofthefollowingisthemostsuitabletitleforthispassage?

七、听力短文（含4小题）（本题共4题，每题7.0

分，共4分。）

33、

A、Silentreadinghadnotbeendiscovered.

B、Therewerefewplacesavailableforprivatereading.

C、Fewpeoplecouldreadfor（hemselves.

D、Peoplereliedonreadingforentertainment.

标准答案：C

知识点解析：Whywasreadingaloudcommonbeforethe19（hcentury?

34、

A、Achangeinthestatusofeducatedpeople.

B、Achangeinthenatureofreading.

C^Anincreaseinthenumberofbooks.

D、Anincreaseintheaverageageofreaders.

标准答案：B、」

知识点解析：Whatdidthedevelopmentofsilentreadingduringthe19thcentury

indicate?

35、

A^Theimportanceofsilentreading.

B、Theinformationyieldedbybooksandnewspapers.

C、Theeffectsofhealthyreading.

D、Thevalueofdifferenttypesofreadingmaterials.

标准答案：D

知识点解析：Whatarceducationalistsstillarguingabout?

36、

A^Explainhowpresent-dayreadinghabitsdeveloped.

B、Changepeople'sattitudestoreading.

C、Showhowreadingmethodshavebeenimproved.

D、Encouragethegrowthofreading.

标准答案：A

知识点解析:Whatisthewriterofthispassageattemptingtodo?

八、听力复合式听写(本题共〃题，每题1・0分，共

〃分。)

AnewWorldBankreportwarnsthatchildrenwhodonotgetenoughgoodfoodinthe

firsttwoyearsoflifesufferlastingdamage.Theymaysufferfrompoorhealthorlimited

(36).Inaddition,it'sreportedthatpoorly(37)childrenaremorelikelyto

dropoutofschoolandearnlessmoneyasadults.Thereport(38)thattoolittle

foodisnottheonlycauseofpoornutrition,Manychildrenwholiveinhomeswith

(39)foodsufferforotherreasons.Thestudyalso(40)malnutritionwith

economicgrowthinpoorcountries.Thestudyproposesthatpoorcountriescould

possibly(41)theireconomicgrowthiftheyimprovednutrition.AfricaandSouth

Asiaarcaffectedthemostbypoornutrition.Thestudy(42)abouthalfofall

childreninIndiadonotgetsufficientgoodfood.Otherpartsoftheworldarealso

severely(43),includingIndonesia,Uzbekistan,Yemen,GuatemalaandPeru.The

study(44).Accordingtothereport,alackofnjtritioninearlychildhood

cancostdevelopingnationsuptothreepercentoftheiryearlyearnings.Therefore,

(45).WorldBanknutritionspecialistMeeraSF.ekarsaidtheperiodoflife

betweenpregnancyandtwoyearsisextremelyimportant.(46).

37、AnewWorldBankreportwarnsthatchildrenwhodonotgetenoughgoodfoodin

thefirsttwoyearsoflifesufferlastingdamage.Theymaysufferfrompoorhealthor

limited(36).Inaddition,it'sreportedthatpoorly(37)childrenaremore

likelytodropoutofschoolandearnlessmoneyasadults.Thereport(38)thattoo

littlefoodisnottheonlycauseofpoornutrition,Manychildrenwholiveinhomeswith

(39)foodsufferforotherreasons.Thestudyalso(40)malnutritionwith

economicgrowthinpoorcountries.Thestudyproposesthatpoorcountriescould

possibly(41)theireconomicgrowthiftheyimprovednutrition.AfricaandSouth

Asiaareaffectedthemostbypoornutrition.Thestudy(42)abouthalfofall

childreninIndiadonotgetsufficientgoodfood.Otherpansoftheworldarealso

severely(43),includingIndonesia,Uzbekistan,Yemen,GuatemalaandPeru.The

study(44).Accordingtothereport,alackofnutritioninearlychildhood

cancostdevelopingnationsuptothreepercentoftheiryearlyearnings.Therefore,

(45).WorldBanknutritionspecialistMeeraSkekarsaidtheperiodoflife

betweenpregnancyandtwoyearsisextremelyimportant.(46)____________.

标准答橐：intelligence

知识点解析：暂无解析

38、

标准答案：nourished

知识点解析：智无解析

39、

标准答案：cautions

知识点解析：暂无解析

40、

标准答案：adequate

知识点解析：暂无解析

41、

标准答案：associates

知识点解析：暂无解析

42、

标准答案：double

知识点解析：暂无解析

43、

标准答案：manifests

知识点解析：暂无解析

44、

标准答案：influenced

知识点解析：暂无解析

45、

标准答案：recommendsthatdevelopingcountriesrevisetheirpoliciestocopewithpoor

nutritionforthesakeofimprovingitseconomy

知识点解析：哲无解析

46、

标准答案：insteadofdirectlyprovidingfood,thestudyadvocateseducational

programsinhealthandnutritionfbrmotherswithyoungbabies

知识点解析：暂无解析

47、

标准答案：So,governmentswithlimitedresourcesshouldtakedirectactiontoimprove

nutritionforchildrenduringthisperiod

知识点解析：暂无解析

九、阅读（常规阅读理解）（本题共7。题，每题7.0

分，共70分。）

Acontroversyeruptedinthescientificcommunityinearly1998overtheuseofDNA

（deoxyribonucleicacid）fingerprintingincriminalinvestigations.DNAfingerprinting

wasintroducedin1987asamethodtoidentifyindividualsbasedonapatternseenin

theirDNA,themoleculeofwhichgenesarcmade.DNAispresentineverycellofthe

bodyexceptredbloodcells.DNAfingerprintinghasbeenusedsuccessfullyinvarious

ways,suchastodeterminepaternity（父亲的身份）whereitisnotclearwhothefatherof

aparticularchildis.However,itisintheareaofcriminalinvestigationsthatDNA

fingerprintinghaspotentiallypowerfulandcontroversialuses.DNAfingerprintingand

otherDNAanalysistechniqueshaverevolutionizedcriminalinvestigationsbygiving

investigatorspowerfulnewtcolsintheattempttoproveguilt,notjustestablish

innocence.Whenusedincriminalinvestigations,aDNAfingerprintpatternfroma

suspectiscomparedwithaDNAfingerprintpatternobtainedfromsuchmaterialashairs

orbloodfoundatthesceneofacrime.AmatchbetweenthetwoDNAsamplescanbe

usedasevidencetoconvictasuspect.Thecontroversyin1998stemmedfromareport

publishedinDecember1991bypopulationgeneticistsRichardC.LewontinofHarvard

UniversityinCambridge,Mass,andDanielL.HartlofWashingtonUniversitySchoolof

MedicineinSt.Louis,Mo.LewontinandHardcalledintoquestionthemethodsto

calculatehowlikelyitisthatamatchbetweentwoDNAfingerprintsmightoccurby

chancealone.Inparticular,theyarguedthatthecurrentmethodcannotproperly

determinethelikelihoodthattwoDNAsampleswillmatchbecausetheycamefromthe

sameindividualratherthansimplyfromtwodifferentindividualswhoaremembersof

thesameethnicgroup.LewontinandHartlcalledforbettersurveysofDNApatterns.In

responsetotheircriticisms,populationgeneticistsRanajitChakrabortyoftheUniversity

ofTexasinDallasandKennethK.KiddofYaleUniversityinNewHaven,Conn.,argued

thatenoughdataarealreadyavailabletoshowthatthemethodscurrentlybeingusedare

adequate.InJanuary1998,however,theFederalBureauofinvestigationandlaboratories

（hatconductDNAtestsannouncedthattheywouldcollectadditionalDNAsamplesfrom

variousethnicgroupsinanattempttoresolvesomeofthesequestions.And,inApril,（he

NationalAcademyofSciencescalledforstrictstandardsandsystemofaccreditation（鉴

定合格）forDNAtestinglaboratories.

48、BeforeDNAfingerprintingisused,suspects.

A、wouldhavetoleavetheirfingerprintsforfurtherinvestigations

B、couldeasilyescapeconvictionofguilt

C、wouldhavetosubmitevidencefortheirinnocence

D、couldbeconvictedofguiltaswell

标准答案：B

知识点解析：文章第二段第•句提到DNAfingerprintingandotherDNAanalysis

techniqueshaverevolutionizedcriminalinvestigationsbygivinginvestigatorspowerful

newtoolsintheattempttoproveguilt,notjustestablishinnocence0由止匕可知，DNA

指纹鉴定使罪犯调查发生了革命性的变化，它为调查员提供了新的强有力的工具来

证明犯罪，而不仅仅是确定无罪。由此可以推出，在没有DNA指纹鉴定之前，嫌

疑犯很容易逃脱指控，故选B。

49、Accordingtothepassage,DNAfingerprintingc