2021-2022年四川省雅安市公共英語五級(jí)(筆試)模擬考試(含答案)

2021-2022年四川省雅安市公共英語五級(jí)(筆試)模擬考試(含答案)學(xué)校:________班級(jí):________姓名:________考號(hào):________

一、1.ListeningComprehension(15題)1.聽力原文：Normallyastudentmustparticipateinacertainnumberofcoursesinordertograduate，andeachcoursewhichheattendsgiveshimacreditwhichhemaycounttowardsadegree．InmanyAmericanuniversitiesthetotalworkforadegreeismadeupofthirty-sixcourseseachlastingforonesemester．Atypicalcourseconsistsofthreeclassesperweekforfifteenweeks；whileattendingauniversityastudentwillprobablyattendfourorfivecoursesduringeachsemester．Normallyastudentwouldexpecttotakefouryearsattendingtwosemesterseachyear．Itispossibletospreadtheperiodofworkforthedegreeoveralongerperiod．Itisalsopossibleforastudenttomovebetweenoneuniversityandanotherduringhisdegreecourse，thoughthisisnotinfactdoneasaregularpractice．

Foreverycoursethathefollowsastudentisgivenagrade．whichisrecorded，andtherecordisavailableforthestudenttoshowtoprospectiveemployers．Allthisimposesaconstantpressureandstrainofwork，butinspiteofthissomestudentsstillfindtimeforgreatactivityinstudentaffairs．Electionstopositionsinstudentorganizationsarousemuchenthusiasm．Theeffectiveworkofmaintainingdisciplineisusuallyperformedbystudentswhoadvisetheacademicauthorities．Anystudentwhoisthoughttohavebrokentherules，forexample，bycheatinghastoappearbeforeastudentcourt．Withtheenormousnumbersofstudents，theoperationofthesystemdoesincludeacertainamountofactivity．Astudentwhohasheldoneofthesepositionsofauthorityismuchrespectedanditwillbeofbenefittohimlaterinhiscareer．

What'sthemainobjectiveofastudentwhoattendsacertainnumberofcourses?

A.Tograduateandobtainadegree.

B.Tolearnsomethingheisinterestedin.

C.Toavoidworking.

D.Toobeyhisparents'order.

2.PartA

Directions:Youwillhearatalk.Asyoulisten,answerQuestions1-10bycirclingTRUEorFALSE.YouwillhearthetalkONLYONCE.Younowhave1minutetoreadQuestions1-10.

聽力原文：Thereareseveralplacesintheworldthatarefamousforpeoplewholiveforaverylongtime．Thesesplacesareusuallymountainousareas，farawayfrommodemcities．Doctors，scientistsandpublichealthexpertsoftentraveltotheseregionstosolveamysteriouslonghealthylife；theexpertshopetobringtothemodemworldthesecretsoflongevity．

HunzaishighintheHymalayanMountainsofAsia．There，manypeopleoveronehundredyearsofagearestillinphysicalhealth．Menofninetyarenewfathers．a(chǎn)ndwomenoffiftystillhavebabies．Whatarethereasonsforthisgoodhealth?ScientistsbelievethatthepeopleofHunzahavethesethreebenefits：first，physicalwork，usuallyinthefieldsorwithanimals；second，ahealthenvironmentwithcleanairandwater：andwhat'smore,asimplediethighinvitaminsandnutritionbutlowinfat，cholesterol，sugarandchemicals．

PeopleintheCaucasusMountaininRussiaarealsofamousfortheirlongevity．Inthisarea，thereareamazingexamplesofverylong-livedpeople．Birthrecordsarenotusuallyavailable．butawomancalledTsurbaprobablyliveduntilage160;amancalledShiraliprobablyliveduntil168．Hiswidowwas120yearsold．Ingeneral，peoplenotonlylivealongtime，buttheyalsolivewell．Theyarealmostneversick，andwhentheydie，theyhavenotonlytheirownteethbutalsoafullheadofhairandgoodeyesight．

Vilcabamba，Ecuador，isanotherareafamousforthelongevityofitshabitants．Thisregion—likeHunzaandtheCaucasus—isalsoinhighmountains．farawayfromcities．InVilcabamba．too．thereisverylittledisease．Onereasonforthegoodhealthofthepeoplemightbetheclean，beautifulenvironment：thetemperatureisabout70Fahrenheitallyearlong；thewindalwayscomesfromthesamedirection；andtheregionisrichinflowers，fruits，vegetablesandwildlife．

Insomeways，thedietsofthehabitantsinthethreeregionsarequitedifferent．Hunzukutseatmainlyrawvegetables，fruit(especiallyapricots)，andchapattis—akindofpancake；theyeatmeatonlyafewtimesayear．TheCaucasiandietconsistsmainlyofmilk，cheese，vegetables，fruitandmeat；mostpeopletheredrinkthelocalredwinedaily．InVilcabamba，peopleeatasmallamountofmeateachweek，batthedietconsistslargelyofgrain，corns，beans，potatoesandfruit．

ExpertsfindonesurprisingfactinthemountainsofEcuador．Mostpeoplethere，eventheveryold，consumealotofcoffee，drinkalargeamountofalcohol，andsmokefortytosixtycigarettesdaily．

However，thedietsaresimilarintwogeneralways：first，thefruitsandvegetablesthattheinhabitantsofthethreeareaseatareallnatural；thatis，theycontainnochemicalsandsecond，thepeopleconsumefewercaloriesthanpeopledointheotherpartsoftheworld．AtypicalNorthAmericantakesinallaverageof3,300calorieseveryday；atypicalinhabitantofthesemountainousareasbetween1,700and2,000calories．

Inhabitantsinthethreeregionshavemoreincommoncalories,naturalfood，theirmountainsandtheirdistancefrommodemcities．becausethesepeopleliveincountrysideandaremostlyfarmers，theirlivesarephysicallyhard．Thus，theydonotneedtogotohealthclubsbecausetheygetalotofexerciseintheirdailywork．Inaddition，although，theirlivesarehard，thepeopledonotseemtohavetheworriesofcitypeople．Theirlivesarequiet．Consequently，someexpertsbelievethatphysicalexerciseandfreedomfromworrymightbethetwomostimportantsecretsoflongevity．

Somemodemcitiesareusuallyfamousforpeoplewholiveaverylongtime.

A.RightB.Wrong

3.PartA

Directions:Youwillhearatalk.Asyoulisten,answerQuestions1-10bycirclingTRUEorFALSE.YouwillhearthetalkONLYONCE.Younowhave1minutetoreadQuestions1-10.

聽力原文：W：Comein,please.

M：Goodmorning,Dr.Wilson.

W：Goodmorning,Wang.Hownicetomeetyouagain.Takeaseat…whydon'tyou,please.Whendidyougettotheuniversity?

M：Iarrivedyesterday.

W：Well…areyoulivinginthecollege?

M：No,IamwithanEnglishfamily…actually…becauseIwanttoimprovemyspeaking.

W：Oh,fine.Right,didyoutakealanguageproficiencytestbeforeyoucame?

M：Yes.Uhh…myOverallBandis6,but…unfortunatelymyspeakingscoreisonly5.

W：OK,youknow,hereinthisuniversity,youhavetotakeourownEnglishtestbeforeyouattendanylectures.So,firstofau．whatwe'vegottodois,wehavetomakeanarrangementforthetestdate.Umm…willtomorrowbeallfightforyou?

M：Yeah,Ihavetimetomorrowmorning.

W：Good,then．Tomorrowatten.Idon'tthinkthetestwillbeanyproblemforyou.Now,let'smakesureyoumakegooduseofyourtimehere.Let'sputitlikethis.Whatexactlydoyouwanttoaccomplishinthenext12months?

M：I'minterestedincomputerlanguagetranslation,Imean,fromEnglishtoChineseandChinesetoEnglish.I'lltry,ifpossible,toproducesoftwareoradevicewhichcanserveasaninterpreter.

W：Yes,couldyoubeabitmorespecificabout…er…thedevice?

M：Forinstance,whenyoutalktothedeviceinEnglishitwilltranslateyourwordsintoChineseandviceversa.

W：Uhuh…doyoumeanit'llbeascompetentas…er…ahumaninterpreter?

M：Yes…well,I'llletitdealwithgeneralsituations,atleast.

W：Fascinating…andhowbigwillthedeviceitselfbe,doyouthink?

M：Thesizeofacigarettepack,Ithink.Sopeoplecanputitintheirpocket.

W：Really?Well,thatcouldbeaPh.Dproject.Tellmewhatyouhavedonesofar.

M：Inmyfouryearsofundergraduatestudy,Istudiedelectronics,advancedmathematics,hardwaredesigning,somecomputerlanguagesandprogramwriting.

W：Yes,buthaveyoudoneanypracticaljobs?Imean,haveyouwrittenanyprogramsforpracticaluse?

M：IhadbeeninvolvedinaprojectforCADinashipyard.

W：Computeraideddesign.Thatwasprobablyagoodexperience,but,unfortunately,itmaynothelpyourpresentprojectmuch.AreyoufamiliarwiththeC-language?

M：No.

W：Uhuh…thephoneticprocessingsystem,doyouknowhowsuchasystemworks?

M：Whatdoyoumeanby“phoneticprocessingsystem”?

W：Well,youknow,Englishisspokenbydifferentpeoplewithdifferentaccents.YourEnglishaccentisdifferentfrommine,andofcoursemineisnotthesameasmycolleagues.SoasIseeit．yourdevicewouldhavetobeabletorecogniseandunderstanddifferentaccents.

M：Oh,Isee.IthinkIcanlearntheC-languageandthephoneticprocessingsystemhere.

W：Well,that'sprobablytrue,butyou'vegotonlytwelvemonthsandyouwantadegree,don'tyou?

M：Yes.

W：OK,sothere'retwowaysofstudyingforadegreehere.Youeithertakesixcourses,passtheirexamsandhaveyourdissertationacceptedortheotherwayisyoudosomeresearchworkandsubmityourprojectreport.

M：IthinkI'lltakethesecondway.

W：Fine,butareyousureyoucallfinishyourprojectintwelvemonths?

M：Idon'tknow.butIcanworktwelvehoursperdayandsevendaysperweek.

W：Well,I'dsuggestyouspendsometimeinourlibrary,tryingtofindoutwhatotherstudentshavedonebeforeandperhapsreconsideryourownproject,tosomeextent.Youmightnarrowyourresearcharea,concentratingonsolvingoneortwomajorproblems.And,it'dbeagoodideatotalktoyourcolleaguesinthelab,first.Anyway,I'msurewecanworkoutsomethinggood.ShallIseey

A.RightB.Wrong

4.Accordingtothefigureoftheacademicyear1995/96，wheredothelargestnumberofforeignstudentscomefrom?

5.Thesuccessofchainschoolsistosomeextentbecauseofthemarketingandadvertising.

A.TrueB.Fasle

6.PartC

Directions:Youwillhearatalk.Asyoulisten,answerthequestionsorcompletethenotesinyourtestbookletforQuestions21-30bywritingNOTMORETHANTHREEwordsinthespaceprovidedontheright.YouwillhearthetalkTWICE.

Younowhave1minutetoreadQuestions21-30.

聽力原文：ForthoseofyouwhoareeitheralreadystudyingintheUnitedStatesorplanningtooneday,itmightbeinterestingtoknowsomethingabouttheforeignstudentpopulationintheUnitedStates.Fortheacademicyear1995/96therewasasumofapproximately344,000foreignstudentsstudyingintheUnitedStates.Thisfigureof344000mayseemlikeaverylargenumberuntilyoucompareitwiththetotalpopulationof241,000,000.Theforeignstudentpopulationhasbeengrowingforanumberofyearsandisstillgrowing,buttherateofincreasehasdroppedsharplyduringthe1990s.Duringthe1980s,thepopulationgrewquiterapidly.Forexample,between1985and1990,theaverageyearlyincreasewas12.5%.However,thepictureinthe1990sisquitedifferent.Therateofincreasehasdeclinedquitenoticeably.Infact,therateofincreasebetween1994/95and1995/96wasonly0.5%,orone-halfofonepercent.Althoughtheoverallrateofincreasehasdroppedtoonly0.5%,thenumberofstudentsfromsomepartsoftheworldisincreasingwhilethenumberofstudentsfromotherareasisdecreasing.Forexample,duringthissameperiod,thatisbetweentheacademicyears1994/95and1995/96,therewasadecreaseinthenumberofstudentsfromtheMiddleEast,whilethenumberofstudentsfromSouthandEastAsiaincreased.Thesechangesinthenumberofstudentscomingfromdifferentpartsoftheworldnodoubtreflectedchangingeconomicandpoliticalsituations.I'msureyouareawareofmanyofthesechanges,andperhapsyoucandiscussthematournextmeeting.Fortodaylet'sconfineourtalktofirst,adiscussionoftheoriginofthesestudents,or,inotherwords,wheretheycamefromsecond,thekindsofstudiestheypursue;and,finally,theacademiclevelstheyarefoundin.Ifwehavealittletimeleft,wemightquicklytalkaboutinwhichgeographicareasmostofthemgotoschool.

Let'sdiscusstheoriginsoftheforeignstudentpopulationintheUnitedStatesfortheacademicyear1995/96.Let'sdiscussitinorderfromthoseareassendingthemoststudentstothoseareassendingthefeweststudents.IfwelookatthefiguresprovidedbytheannualcensusofforeignstudentsintheUnitedStatesfortheyear1995/96,weseethatmostoftheforeignstudentsstudyingintheUnitedStatesduringthisyearwerefromSouthandEastAsia.Thisisaratherlargegeographicalareawhichincludessuchconu-triesasChina,Korea,Pakistan,India,Malaysia,andIndonesia.Thetotalnumberofstudentsfromthisarea,SouthandEastAsiawas156,830.Inotherwords,roughly2outofevery5foreignstudentscomefromSouthandEastAsia.Almost24000ofthistotalwerefromChina.Malaysiawasclosebehindwithjustalittleover23000students.ThenextlargestnumberofstudentscamefromtheMiddleEast.ThenumberofstudentsfromtheMiddleEastcametoaboutone-thirdthenumberfromSouthandEastAsia.ThefourthlargestnumbercamefromSouthAmerica.NextcameEurope,Africa,NorthAmerica,andOceania.Let'srecapitulatewhatwe'vesaid.ThelargestnumberofstudentsstudyingintheUnitedStatesduringtheacademicyear1995/96werefromSouthandEastAsia,followedbytheMiddleEast,SouthAmerica,Europe,Africa,NorthAmerica,andOceania.

Whatfieldsaretheselargenumbersofforeignstudentsstudyingin?Itprobablywon'tsurpriseyouthatthelargestnumberareinthefieldofengineering.Infact,21.7%ofthetotalnumberarestudyingengineering.Businessandmanagementisclosebehind,however,withatotalof18.9%.Thethirdmostpopularfieldw

7.WhatdidFranklinsetupbetweenthenorthernandsoutherncolonies?

8.MDdecidescompany'spoliciesandcarriesthemout.

A.TrueB.Fasle

9.HowmanypsychologicaltypesofpeoplearethereaccordingtoJung'sideas?

10.Ifaconsumerwantsaquicksettlementoftheproblem,whomisitbettertocomplainto?

A.Ashopassistant.

B.Thestoremanager.

C.Themanufacturer.

D.Apublicorganization.

11.Sugarincoldsweetdrinksslowstheliquidfromgettingintotheblood-stream.

A.RightB.Wrong

12.The"feltimage"ismuchmoreimportantbecauseithelpsyoutobemoreconfident.

A.TrueB.Fasle

13.Whathasgivenwomenanindependenceinformingafamily?

14.Whichsubjectdoesthestudentsayshewasgoodat?

A.Computerprogramming.

B.Artanddesign.

C.Electronics.

D.Mathematics.

15.MDhassixdepartmentalmanagersatthemoment．

A.RightB.Wrong

二、2.UseofEnglish(10題)16.

【C11】

17.(42)

18.(36)

19.

【C14】

20.(50)

21.(45)

22.

【C6】

23.

【C7】

24.

【C17】

25.(41)

三、3.ReadingComprehension(15題)26.PartB

Directions:Inthefollowingarticlesomeparagraphshavebeenremoved.ForQuestions66-70,choosethemostsuitableparagraphfromthelistA-Ftofitintoeachofthenumberedgaps.Thereisoneparagraphwhichdoesnotfitinanyofthegaps.MarkyouranswersonANSWERSHEET1.

Thepressisconstantlyremindingusthatthedramaticincreaseintheageofourpopulationoverthenext30orsoyearswillcausenationalhealthcaresystemstocollapse,economiestocrumpleunderthestrainofpensiondemandsanddisintegratingfamiliestobuckleunderincreasingcarecommitments.YetresearchatOxfordisbeginningtoexposesomeofthewidespreadmythsthatunderliethisrhetoric.Demographicageingisundoubtedlyareality.Lifeexpectancyindevelopedcountrieshasrisencontinuouslyoverthepastcentury,increasingthepercentageofthoseovertheageof60relativetothoseundertheageof15.By2030halfthepopulationofWesternEuropewillbeovertheageof50,withapredictedaveragelifeexpectancyofafurther40years.Bythen,aquarterofthepopulationwillbeover65andby2050theUK'scurrentnumberof10,000centenariansarepredictedtohavereachedaquarterofamillion.SomedemographershaveevensuggestedthathalfofallbabygirlsbornintheWesttodaywilllivetoseethenextcentury.

66.______

Indeed,ifthiscouldbeachievedthroughouttheworld,itwouldsurelycountasthesuccessofcivilization,forthenwewouldalsohaveconqueredthekillersofpoverty,disease,famineandwar.

Decreasingmortalityrates,increasinglongevityanddecliningfertilitymeansmallerpercentagesofyoungpeoplewithinpopulations.Overthepast20yearslifeexpectancyatbirthintheUKhasrisenbyfouryearsformen(to75)andthreeyearsforwomen(to80).MeanwhilefertilityratesacrossEuropehavedeclinedmoreorlesscontinuouslyoverthepast40yearsandremainwellbelowthelevelsrequiredforEuropeanpopulationstobeabletoreplacethemselveswithoutsubstantiveimmigration.Butagain,ratherthanseeingthisasadoomandgloomscenario,weneedtoexplorethepositiveaspectsofthesedemographics.Thenext50yearsshouldprovideuswithanopportunitytoenjoythemanyadvantagesofasocietywithamaturepopulationstructure.

67.______

ThefirstoftheseisthecurrentpoliticalrhetoricwhichclaimsthathealthservicesacrosstheWesternworldarecollapsingunderthestrainofdemographicageing.

68.______

Thesecondmythistheviewthattheratioofworkerstonon-workerswillbecomesoacutethatWesterneconomieswillcollapse,compoundedbyamassivegrowthinpensiondebt.Whilethereareundoubtedconcernsovercurrentpensionshortfalls,itisalsoclearthatworkingliveswillthemselveschangeoverthenextfewdecades,withapredictedincreaseinflexibleandpart-timeworkandtheprobableextensionofworkinglifeuntiltheageof70.Indeed,wehavetorecognizethatwecannotexpecttoretireattheageof50andthenbeabletosupportourselvesforanother40orsoyears.Neitherasolidpensionschemenorsavingscancarrypeoplethatlong.

69.______

Afurthermythisthatwewillallliveinloose,multigenerationalfamilies,experiencingincreasedemotionaldistancingfromourkin.Evidencefromavarietyofstudiesacrossthedevelopedworldsuggeststhat,ifanything,themodernfamilyisactuallybecomingmoreclose-knit.WorkcarriedoutbytheOxfordInstituteinScandinaviaandinaPan-EuropeanFamilyCareStudy,forexample,showsthatdespitedieinfluenceofthewelfarestate,overthepast10years,peoplehavecometovaluefamilyrelationshipsmorethanpreviously.

70.______

Inthedevelopedworld,therefore,wecanseeactualbenefitsfrompopulationageing:abetterbalancebetweenagegroups,matureandlessvolatiles

27.

Privacystandardsmadebyindividualstatesareineffectivebecause______.

A.thestandardsofdifferentstatescontradicteachother

B.onlinecommunicationisnotrestrictedtoanystate

C.thesestandardsignorethefederallawonthematter

D.thesestandardsareonlyapplicabletoregionalwebsites

28.(74)

29.(75)

30.

WhatisNOTtrueabouttheeightgirls?

A.Theyareallbetween12and17.

B.Theyhavetriedavarietyofmeasures.

C.Theyattendasuicidesquad.

D.Alltheirattemptstocommitsuicidearevital.

31.(69)

32.ShortagesoffluvaccinearenothingnewinAmerica,butthisyear'sisawhopper.Untillastweek,itappearedthat100millionAmericanswouldhaveaccesstoflushotsthisfall.ThenBritishauthorities,concernedaboutquality-controlproblemsataproductionplantinLiverpool,barredallfurthershipmentsbytheChironCorp.Overnight,theU.S.vaccinesupplydwindledbynearlyhalfandfederalhealthofficialsfoundthemselvesmakinganunusualplea.Insteadofbeseechingusalltogetvaccinated,they'renowurgingmosthealthypeoplebetweentheagesof2and64notto."Thisreemphasizesthefragilityofourvaccinesupply,"saysDr.MartinMyersoftheNationalNetworkforImmunizationInformation,"andthelackofredundancyinoursystem."

Whyissuchabasichealthservicesoeasilyknockedout?Mainlybecauseprivatecompanieshavehadlittleincentivetopursueit.Tocreateasingledoseoffluvaccine,amanufacturerhastogrowlivevirusina2-week-oldfertilizedchickenegg,thencracktheegg,harvestthevirusandextracttheproteinsusedtoprovokeanimmunere-sponse.Profitmarginsarenarrow,demandisfickleand,becauseeachyear'sfluvirusisdifferent,anyleftovervaccinegoestowaste.Asaresult,theUnitedStatesnowhasonlytwomajorsuppliers(ChironandAventisPasteur)—andwhenoneofthemrunsintotrouble,thereisn'tmuchtheothercandoaboutit."Avaccinemakercan'tjustcallupandorder40millionmorefertilizedeggs,"saysManonCox,ofConnecticut-basedProteinSciencesCorp."There'sawholeindustrythat'sscheduledtoproduceacertainnumberofeggsatacertaintime."

Sleekertechnologiesarenowintheworks,andexpertsarehopingthatthisyear'sfiascowillspeedthepaceofinnovation.Themainchallengeistoshiftproductionfromeggsintocellcultures—amediumalreadyusedtomakemostothervaccines.Fluvaccinesareharderthanmosttoproducethisway,butseveralbiotechcompaniesarenowpursuingthisstrategy,andoneculture-basedproduct(SolvayPharmaceuticals'Invivac)hasbeenclearedformarketinginEurope.

ForAmericans,theimmediatechallengeistomakethemostofalimitedsupply.Thegovernmentestimatesthat95millionpeoplestillqualifyforshotsunderthevoluntaryrestrictionsannouncedlastweek.That'snearlytwicethenumberofdosesthatclinicswillhaveonhand,butonly60millionAmericansseekoutshotsinanormalyear.Infact,manyexpertsarehopingtheshortagewillserveasanawarenesscampaign—encouragingthepeoplewhoreallyneedaflushottogetone.

Shortagesoffluevaccineshowthat______.

A.Americareliestoomuchonforeignsuppliers

B.thedemandoffluevaccinesishighthisyear

C.qualityproblemisaseriousprobleminfluvaccineproduction

D.thesupplyoffluvaccinesisratherweakandAmericahasnoback-upmeasurestomakeitup

33.(78)

34.

Thevalueofcompetitionworksagainstthespiritofnationalcooperationinthat______.

A.itmakespeoplenotbelieveinthegovernment

B.itcausespeopletosuspectbutnottotrusteachother

C.itmakespeopleevenunabletocooperatewellonlocallevels

D.itencouragespeopletogainsuccessthroughindividualhardwork

35.At18,AshanthiDeSilvaofsuburbanClevelandisalivingsymbolofoneofthegreatintellectualachievementsofthe20thcentury.Bornwithanextremelyrareandusuallyfataldisorderthatleftherwithoutafunctioningimmunesystem(the"bubble-boydisease",namedafteranearliervictimwhowaskeptaliveforyearsinasterileplastictent),shewastreatedbeginningin1990witharevolutionarynewtherapythatsoughttocorrectthedefectatitsverysource,inthegenesofherwhitebloodcells.Itworked.Althoughherlastgene-therapytreatmentwasin1992,sheiscompletelyhealthywithnormalimmunefunction,accordingtooneofthedoctorswhotreatedher,W.FrenchAndersonoftheUniversityofSouthernCalifornia.Researchershavelongdreamedoftreatingdiseasesfromhemophiliatocancerbyreplacingmutantgeneswithnormalones.Andthedreamingmaycontinuefordecadesmore."Therewillbeagene-basedtreatmentforessentiallyeverydisease,"Andersonsays,"within50years."

It'snotentirelyclearwhymedicinehasbeensoslowtobuildonAnderson'searlysuccess.TheNationalInstitutesofHealthbudgetofficeestimatesitwillspend$432millionongene-therapyresearchin2005,andthereisnoshortageofpromisingleads.Thetherapeuticgenesareusuallydeliveredthroughvirusesthatdon'tcausehumandisease."ThevirusissortoflikeaTrojanhorse,"saysRonaldCrystalofNewYorkPresbyterian/WeillCornellMedicalCollege."Thecargoisthegene."

AttheUniversityofPennsylvania'sAbramsonCancerCenter,immunologistCarlJunerecentlytreatedHIVpatientswithageneintendedtohelptheircellsresisttheinfection.AtCornellUniversity,researchersarepursuinggene-basedtherapiesforParkinson'sdiseaseandararehereditarydisorderthatdestroyschildren'sbraincells.AtStanfordUniversityandtheChildren'sHospitalofPhiladelphia,researchersaretryingtofigureouthowtohelppatientswithhemophiliawhotodaymustinjectthemselveswithexpensiveclottingdrugsforlife.Animalexperimentshaveshowngreatpromise.

Butsomehow,thingsgetlostinthetranslationfromlaboratorytopatient.Inhumantrialsofthehemophiliatreatment,patientsshowaresponseatfirst,butitfadesovertime.Andthefieldhasstillnotrecoveredfromthesetbackitsufferedin1999,whenJesseGelsinger,an18-year-oldwithararemetabolicdisorder,diedafterreceivinganexperimentalgenetherapyattheUniversityofPennsylvania.Someexpertsworrythatthefieldwillbetarnishedfurtherifthenextpeopletobenefitarenotpatientsbutathletesseekinganedge.Thissummer,researchersattheSalkInstituteinSanDiegosaidtheyhadcreateda"marathonmouse"byimplantingagenethatenhancesrunningability;already,officialsattheWorldAnti-DopingAgencyarepreparingtotestathletesforsignsof"genedoping".Buttheprincipleisthesame,whetheryou'retryingtohelpahealthyrunnerrunfasterorallowamuscular-dystro-phypatienttowalk."Everybodyrecognizesthatgenetherapyisaverygoodidea,"saysCrystal."Andeventuallyit'sgoingtowork."

ThecaseofAshanthiDesilvaismentionedinthetextto

A.showthepromiseofgene-therapy

B.giveanexampleofmodemtreatmentforfataldiseases

C.introducetheachievementofAndersonandhisteam

D.explainhowgene-basedtreatmentworks

36.

Privatecompanieshavelittleinterestinproducingfluvaccinesbecauseof______.

A.complicatedprocess,highcost,lowprofitandhighrisk

B.shortagesoffertilizedchickeneggs

C.difficultyingrowinglivevirus

D.fastchangingoffluvirus

37.Themanbehindthisnotion,JackMaple,isadandywhoaffectsdarkglasses,homburgs(翹邊帽)andtwo-toeshoes;yethehasbecomesomethingofalegendinAmerica'spolicedepartments.Forsomeyears,startinginNewYorkandmovingontohigh-crimespotssuchasNewOrleansandPhiladelphia,heandhisbusinesspartner,JohnLiederhavemarketedatwo-tiersystemforcuttingcrime.

First,policedepartmentshavetosortthemselvesout:rootoutcorruption,streamlinetheirbureaucracy,andmakemorecontactwiththepublic.Second,theyhavetoadoptacomputersystemcalledComstatwhichhelpsthemtoanalyzestatisticsofallmajorcrimes.Theseareconstantlykeyedintothecomputer,whichthendisplayswhereandwhentheyhaveoccurredonacolor-codedmap,enabl