2022年山東省聊城市大學英語6級大學英語六級模擬考試(含答案)學校:________班級:________姓名:________考號:________

一、1.Writing(10題)1.Directions:Inthispart,youareallowed30minutestowriteashortessayentitledAnEye-witnessAccountofaTrafficAccident.Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelow.

1.車禍發(fā)生的時間及地點；

2．你所見到的車禍情況；

3．你對車禍原因的分析。

2.Directions:Forthispart,youareallowed30minutestowriteashortessayentitledSayNotoAvianInfluenza.Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelow.

1.“禽流感”危害的后果及其嚴重性

2．造成這種突發(fā)疫情的原因

3．我們應該如何對待

Usefulwordsandexpressions:

禽流感:avianinfluenza

預警系統(tǒng):warningsystem

應急機制:emergencyresponsemechanism

SayNotoAvianInfluenza

3.Directions:Forthispart,youareallowed30minutestowriteacompositiononthetopic:AwayfromNet-barCampaign.Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelow:

1.新聞媒體披露，徐州某中學1000多名學生簽名，莊嚴承諾“遠離網吧”

2．分析“遠離網吧”運動的原因

3．做出對比和評論

AwayfromNet-barCampaign

4.Directions:Forthispart,youareallowed30minutestowriteashortessayentitledTheMarvelsofMedicineintheTwentiethCentury.Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelow:

1.Introduction:Advancesinmedicalscience—themostimportantachievementsmadeinthetwentiethcentury

1.Developmentofvaccinesandantibiotics

2.Discoveriesofnewdiagnosismethods

3.Adventofgeneticengineering,anewbranchofbiology

Concludingremarks:Evengreaterwonderstobewroughtinthe21stcentury

5.1．在大學中，室友之間和睦相處很重要；

2．有些人認為相互體諒是和睦相處的重要途徑；

3．你的觀點。

6.Directions:Forthispart,youareallowed30minutestowriteashortessayentitledMyViewonOnlineShopping.Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelow:

1.網上購物漸漸成為一種時尚，越來越多的大學生選擇網上購物

2．分析大學生網上購物的原因

3．我對此現(xiàn)象的看法

MyViewonOnlineShopping

7.Directions:Forthispart,youareallowed30minutestowriteashortessaycommentingonthepleasureoflearning.Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelowinChinese.

1．學習是一種樂趣

2．學習的樂趣普遍存在(存在于書本學習、藝術欣賞、了解世界等多方面的學習之中)

3．如何走出“學習是痛苦的”誤區(qū)

8.Directions:Forthispart,youareallowed30minutestowriteashortessayentitledStudents'Union,AssociationsandPersonalDevelopment.Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelow

1.大學里學生會和各種社團的現(xiàn)狀

2．參加學生會和各種社團對個人發(fā)展的作用

3．我的觀念中大學生對待學生會和社團活動的正確態(tài)度

Students'Union,AssociationsandPersonalDevelopment

9.Forthispart,youareallowed30minutestowriteacompositiononthetopic:IdleYoung,NeedyOld.Youshouldwriteatleast150wordsfollowingtheoutlinegivenbelowinChinese:

1．解釋諺語

2．結合現(xiàn)實舉例論證

3．珍惜時光，從現(xiàn)在做起

IdleYoung,NeedyOld

10.Forthispart,youareallowed30minutestowriteacompositiononthetopicHowtoSolvetheHousingProbleminBigCities?Youshouldwriteatleast150wordsaccordingtotheoutlinegivenbelowinChinese:

1．住房問題在大城市變得越來越嚴重

2．住房問題的產生原因和給城市帶來的影響

3．建議一個解決辦法

HowtoSolvetheHousingProbleminBigCities?

二、2.ReadingComprehension(SkimmingandScanning)(10題)11.

Manypeoplewillspendlesstimeinfrontofatelevisionscreenmoreonthewebintheworld.

A.YB.NC.NG

12.

AlthoughpeoplethinkAmericanpartymakesarichsourcefordiscussions,manyteachers______.

A.producelessonplanswithcase

B.producelessonplanswithdifficulties

C.dedicateafullclasstothisfascinatingtopic

D.makeexcellentlessonplans

13.

Scientistshaveexertedgreateffortstosearchotherplanetsforanylifeforms.

A.YB.NC.NG

14.

Anothertechnicaladvanceingardeninginthe19thcenturywasthatpeoplecouldgrowplantsincontainersinspringandautumnonly.

A.YB.NC.NG

15.Onereasonwhycollegesincreasetuitionandfeesisthatthestatesupportisshrinking.

16.

IfalltheiceintheAntarcticmelted,globalsealevelswouldrisehugely.

A.YB.NC.NG

17.

Inordertofillyourmindwithenjoyablemoments,youjustneedbringyourmindbackwhen______.

18.WaterWarnings

UrgentTasksforChina

Waterhaslongbeenconsideredaninexhaustibleresource.ButChinaisfacinganunmistakablewatercrisis,andrecently,becauseofincreasinglyhard-to-misssymptomsoftheshortage,peopleinallpartsofsocietyarebeginningtorealizejusthowpreciouscommoditywaterreallyis.

Atfirstglance,itseemslikethereshouldbeenough:China'stotalsupplyoffreshwaterresourcesrankssixthintheworld,afterBrazil,Russia,Canada,theUnitedStatesandIndonesia.Butdespitethisapparentadvantage,China'spercapitawaterresourcesfallfarbelowtheworldaverageof7,600cubicmetersper-capitaduetothecountry'senormouspopulationsize.China'sper-capitaamountof2,200cubicmetersisexpectedtodecreasefurtherasthecountrycontinuesitsrapideconomicgrowthandpopulationexpansion.

"Withoutexcessivelyexploitingundergroundwater,Chinahasawatergapofnearly40billioncubicmeters.Thecountry's320millionruralpeoplearen'tabletodrinksafewaterandover400citiesdon'thavesufficientwatersupply,110ofwhichfaceaseriousshortage,"WangShucheng,MinisterofWaterResources,saidrecently.

Somewaterresourcesexpertswarnthatthecurrentshortageisnomorethanawarningsignal,withagreatercrisisyettocome.TheMinistryofWaterResourcesissuedawatercrisiswarningasearlyasNovember2001.AtthetimeitsaidthatwhentheChinesepopulationpeaksat1.6billionin2030,China'sper-capitawaterresourcescouldfallto1,700cubicmeters,theinternationallyacknowledgedlevelbelowwhichanareaissaidtobeexperiencing"waterstress".

PoorNaturalConditions

Scantwaterresourcestoslakethethirstsofapopulationof1.3billion,andtheunevengeographicaldistributionoftheseresources,form.thebasisofwaterconditionsinChina.

Affectedbymonsoons(季候風),China'sprecipitation(降水量)variesconsiderablyamongdifferent

seasons.Thetimeofprecipitationoverlaps(交迭)withthehottestseasons,mostlyinsummerandautumnandscarcelyinwinterandspring.Generally,regionswiththelowestprecipitationlevelsreceiveitconcentratedlyonlyatcertaintimesoftheyear,whicheasilygivesrisetodroughtinspringandfloodinginsummer.Meanwhile,twothirdsofChina'swaterresourcesiscomprisedofrunoffflooding,whichmeansriversoftenfloodintherainyseasonanddryupatothertimes.

China'swaterresourcesarealsodistributedgeographicallyunevenly,inconsistentwiththedistributionofland,mineralresourcesandproductivity.Generally,waterresourcesareconcentratedinthesouthernandeasternpartsofthecountry,andinmountainousareas.Annualprecipitationamountsvaryfrommorethan3,000millimetersinthesoutheasttolessthan50millimetersinthenorthwest.

Chinaispronetofloodsanddroughts,such-astheseveredroughtthathitChongqingandSichuaninsouthwestChinathissummer,thecountry'sworstin50years.Whilepercapitawaterresourcesinsomeareasofthenorthapproachthelevelofthedriestcountriesintheworld,thewater-richsouthoftensuffersfromseasonaldroughts,whichadverselyaffectsrice,themajorcropreliantonwatering,aswellasothercashcrops.Thelasttwodecadeshaveseenanominalchangeinthecountry'ssurfacewaterresourcesandtotalwaterresources.Yetcluetofactorssuchasglobalclimatechangeandriverdrainage,andtotalwaterresourcesinsouthChinaarerisingwhilewaterresourcesinthenortharefallingsignificantly.

ASeriesofMeasuresAdoptedbyChineseGovernment

Againstthesedifficultconditions,theChineseGovernmenthastakenaseriesofmeasurestotryandguaranteethebasicwaterdemandsnecessaryfordailylifeandsocialandeconomicdevelopment.Sincethefoundingoft

A.YB.NC.NG

19.

Thelivingstandardsofeverymemberofthesocietydependonhisorheremployers'abilityto______.

20.

Collegeinstructorsdon'tlikethosestudentswhoonlyrepeat______.

三、3.ListeningComprehension(10題)21.

【B4】

22.聽力原文：TheChinesepeople,Ifoundout,holdontomanytraditionsthatarebothinterestingandpuzzling.Forinstance,womencustomarilywalkbehindtheirhusbands,andoftenthreeorfourgenerationslivetogetherinthesamehouse.Noneofthesecustomstroubledme,however,untilthedayIfoundoutthatmyweddingdresswastobered.

ThisisAmerica,Ithought,notChina,andIamnotgoingtomakemyselflooksillybywearingthatdress.Whatwouldmyfriendsandfamilythink?

Myfuturemother-in-lawsooncaughtwindofmyreluctancetowearthedressandcametovisitme.

"Iknowitisdifficultforyoutoacceptwearingaredweddingdress,"shesaid."Iwouldliketohelpyouunderstandourmarriagecustoms.AllChinesewomenmarryinareddressbecausethiscolorsymbolizesgreathappiness,goodluck,andabrightfuture.Tomarryinawhitedresswouldbringverybadluck,forwhiterepresentsmourninganddeepsorrow."

Hearingthis,IfelttherewasnowaythatIcouldrefusetowearthatdressonmyweddingday.Thenshesmiledandsaid,"Youmustpromisetopassonthisparticulartraditiontoyourowndaughteroneday.Oldwaysshouldneverbeforgotten."

Nowsomanyyearshavepassedsincethatday,butsomethingsneverchange.Andoneofthemistheattitudeofpeoplegrowingupinanewgeneration.WhenItoldmydaughterthehistoryofthereddress,shereplied,"I'mnotwearingthatdress!"

(30)

A.Womenshouldwalkbehindtheirhusbands.

B.Threeorfourgenerationslivetogetherinthesamehouse.

C.Oldpeopleareheldingreatrespect.

D.Womenmarryinareddress.

23.(13)

A.Theyaretoomanyandshecan'treadthemall.

B.Theyaretoodifficultandcomplexforhertounderstand.

C.Shefeelstootiredtoreadanybooks.

D.Theyaretooheavyforhertocarry.

24.(26)

A.It'sacomparison,hewantstodescribehowearthquakescauseturbiditycurrents.

B.Hewantstodescribedesertwinds.

C.Hemeansdesertwindscancauseturbiditycurrents.

D.Hejusttalksaboutanothertopic.

25.聽力原文：W:Ithinkit'sgreatthatyouareabletospeaksomanydifferentlanguages.

M:Icancarryonsimpleconversations,butthatisreallyaboutit.

Q:Whatdoesthemansayabouthislinguisticability?

(18)

A.Itishardforhimtoevaluate.

B.Itisagreatadvantagetohim.

C.Itisimprovedwitheachconversation.

D.It'sactuallyratherlimited.

26.(38)

27.(31)

A.Theybumpedintoeachotheroveraswimmingpool.

B.Theyavoidedeachotherbyturningindifferentdirections.

C.Theynarrowlyescapedcrashingintoeachother.

D.Oneplaneclimbedabovetheotheratthecriticalmoment.

28.(29)

A.Hewillconnectyoutothecorrectnumber.

B.Hewillchargeyoulessforthewrongnumber.

C.Hewillchargeyounomoneyforthewrongnumber.

D.Hewilltellyouwhatthewrongnumberis.

29.

【B6】

30.(36)

A.ThePhilippines.B.Brazil.C.Mexico.D.Guatemala.

四、4.ReadingComprehension(ReadinginDepth)(3題)31.

Whatcausedthedecliningofassetpricesandrisingofsavingrates?

32.

WhatisthefunctionofHabitrolinquittingsmoking?

33.

【C6】

五、5.ErrorCorrection(3題)34.Americansthisyearwillswallow15,000tonsofaspirin,oneofS1.______

safestandmosteffectivedrugsinventedbyman.Asthemostpopular

medicinesintheworldtoday,itisaneffectivepainreliever.ItsbadS2.______

effectsarerelativelymild,anditischeap.

Formillionsofpeoplesufferedfromdiseases,itistheonlythingS3.______

thatworks.Aspirin,inshort,istrulythe20th-centurywonderdrug.It

isalsothesecondlargestsuicidedrugandistheleadingcauseof

poisoningamongchildren.Ithassideeffectsthat,ffrelativelymild,S4.______

arelargelyunrecognizedbetweenusers.S5.______

AlthoughaspirinwasfirstsoldbyGermancompanyin1899,it

hasbeenaroundmuchlongerthanthat.Hippocrates,inancient

Greece,understoodthemedicalvalueoftheleavesandtreebark

whichtodayisknowntocontainsalicylates(水楊酸鹽),thechemicalS6.______

inaspirin.Duringthe19thcentury,therewasagreatnumberofS7.______

experimentationinEuropewiththischemical,anditledinthe

introductionofaspirin.By1915,aspirintabletswereavailableintheS8.______

UnitedStates.

Asmallquantityofaspirin(twofive-graintablets)relievespain

andinflammation.ItalsoreducesdownfeverbyinterferingwithsomeS9.______

ofthebody'sreactions.Specifically,aspirinseemstoslowdownthe

formationoftheacidsinvolvedinpainandthecomplexchemical

reactionsthatcausefever.Thechemistryoftheseacidsisnotfully

understood,andthesloweffectofaspiriniswellknown.S10.______

【S1】

35.

【S6】

36.

【S10】

六、6.ErrorCorrection(3題)37.

【S7】

38.Geneticengineering,theprocessofsplicing(連接)

togetherDNAfromdifferentorganismstocreateapreferred

typeofplantoranimal,isarelativelynewdevelopment

inagriculture.Thefirstsuccessfulexperiment

wasachievedin1973.Despiteofitsrecentemergence,【S1】______

however,geneticengineering--particularlyintheareaof

agriculture--hasproliferatedswiftly.FewAmericanscan

nowavoidgeneticallyalteredfoodaltogether,butit's【S2】______

estimatedthatmodifiedingredientsarepresentinabouttwo-thirds

ofthefoodsinAmericansupermarkets.

Supportersofgeneticengineeringhavearguedthat

thisapplicationofscienceallowsfarmerstogrowcrops

moreefficientlyandtosavemoneyonpesticidesandfertilizers.

Fewerchemicals,theysay,willbebenefitfor【S3】______

theenvironmentandreducehealthrisksforfarmworkers.

Opponentsofgeneticengineeringmaketheclaim

thatscientistsaretampering(損害)withmattersthat

theyknowtoolittleandessentiallycommittingacrime【S4】______

againstnature.It'simpossible,theymaintain,forpeople

toseethepossibleconsequencesthatgeneticengineering【S5】______

couldwreak(帶來)ontheenvironmentandonthe

healthofhumanbeings.【S6】______

Greenpeaceactivistsobjectedonfarmers'useofcorn

thathadbeengeneticallymodifiedtoresistcornborers

(玉米螟)--peststhatwerecostingfarmersuptoabillion【S7】______

dollarsayearinminedcrops.Nooneadmittedthat

thegeneticchangehadbenefitedthecornplants.But

howwoulditimpactupontherestoftheenvironment?

Studiesvariouslysupportedbothsidesoftheargument【S8】______

,andthusprovedconclusive.However,theprotest

cuttotheheartofthegeneticengineeringcontroversyby【S9】______

demonstratingwhatunpreparedboththescientistsand

theiropponentsweretogauge(測量,評估)thelong-term

effectsofintroducingchangesintolivingbeings.

Perhaps,likemostformsoftechnologicalinnovation,genetic

engineeringwillcometodisplaybothitsbenefits【S10】______

andobviousdrawbacks--manyofwhichwillbesoapparent

untilmankindhaspursuedtheexperimentforsome

time.

【S1】

39.

【S5】

參考答案

1.AnEye-witnessAccountofaTrafficAccidentYesterdayafternoonIhappenedtowitnessaterribletrafficaccidentonmywayhomefromschool.Itwas5:30p.m.IwasridingmyfavoriteGiantbackhome.WhenIgottothelastcrossingontheGoldenLionStreettheredlightwason.SoIappliedthebrakesalongwithalongqueueofvehicleswaitingtopass.Justatthatmomentaheavy-loadtruckwithearthroaredforwardatmysideandbumpedagainstaprivateAccordofHondatravelingeastbound.Asaresultthewindshieldofthelorrywasbrokenintopiecesanditsdrivergotfatallywoundedontheheadonthesteeringwheel.ThedriveroftheAccordandhisgirlfriendtheonlypassengerinthecaronlygotminorinjuriesbuthiscarlostitsrearaxelandtwowheelsandwastotallydead.AsforthecauseoftheaccidentIthinkthedriverofthelorryshouldbeheldresponsible:thelightwasredthen;heshouldhavestoppedandwaited.Itwashewhohadbrokenthetrafficregulations.Inadditionthebadweatherwaspartofthecause.Itwasdrizzlingthenandtheroadwasquiteslippery.Finallydrunkdrivingwasprobablyanimportantfactor.Asthepolicediscoveredonthespot;therewasaheavyalcoholicsmellonthedeadbodyofthelorrydriver.AnEye-witnessAccountofaTrafficAccidentYesterdayafternoon,Ihappenedtowitnessaterribletrafficaccidentonmywayhomefromschool.Itwas5:30p.m.,IwasridingmyfavoriteGiantbackhome.WhenIgottothelastcrossingontheGoldenLionStreet,theredlightwason.SoIappliedthebrakes,alongwithalongqueueofvehicleswaitingtopass.Justatthatmoment,aheavy-loadtruckwithearthroaredforwardatmysideandbumpedagainstaprivateAccordofHondatravelingeastbound.Asaresult,thewindshieldofthelorrywasbrokenintopiecesanditsdrivergotfatallywoundedontheheadonthesteeringwheel.ThedriveroftheAccordandhisgirlfriend,theonlypassengerinthecar,onlygotminorinjuries,buthiscarlostitsrearaxelandtwowheelsandwastotallydead.Asforthecauseoftheaccident,Ithinkthedriverofthelorryshouldbeheldresponsible:thelightwasredthen;heshouldhavestoppedandwaited.Itwashewhohadbrokenthetrafficregulations.Inaddition,thebadweatherwaspartofthecause.Itwasdrizzlingthen,andtheroadwasquiteslippery.Finally,drunkdrivingwasprobablyanimportantfactor.Asthepolicediscoveredonthespot;therewasaheavyalcoholicsmellonthedeadbodyofthelorrydriver.

2.SayNotoAvianInfluenzaAvianInfluenzaknownasaninfectiousdiseaseswiftlysweepthewholecountry.SounexpectedlyandpowerfullydoesitcomethatitsoonbecomepervasivearoundAsiaandallovertheworld.Suchkindofdiseaseoccursnotonlyinthedevelopingcountriesbutalsointhedevelopedcountries.Peoplewhohavecaughtthediseasewillsufferfromhighfevermuscleacherunnynoseandsorethroat.Somemayevengeteyeproblemandhavedifficultybreathingatalaterstage.AvianInfluenzabecomesanepidemicwhichhasseriouslyaffectedpeople'sdailylifeandnationaleconomyaswell.Itisevidentthatsuchphenomenoncanbeattributedtothefollowingreasons.Directcontactwiththeinfectiouspoultrywhichmakespeoplefallillisviewedasthemajorreason.Furthermorecontaminatedobjectsincludingdailynecessitiesmaycastamalignantshadowonpeople'slifethroughwhichpeopleeasilygetinfected.Finallybreathandfoodtransmissionmakespeoplehorrifiedinthemulti-organfailure.AvianInfluenzafactuallyprovokesfearandpanicamongthenativesandtouristsaswell.InmyopinionAvianInfluenzamaycausetheglobaloutbreakofthediseaseifitisnotbroughtunderthecontrol.Governmentshouldmonitorthewholesituationestablishingthewarningsystemtopreventthepeoplefrominfectionandadoptingtheemergencyresponsemechanismtoreducethedeathrate.Moreimportantpeoplemustberesponsibleforthemselves.Theyshouldenjoygoodhabitandlifestylesuchasself-cleaningandprotectionthoroughcookingofpoultrymeatseparationofrawfoodfromthecookedfoodandetc.Onlyinthiswaycanwereallyavoidthedisaster.SayNotoAvianInfluenzaAvianInfluenza,knownasaninfectiousdisease,swiftlysweepthewholecountry.SounexpectedlyandpowerfullydoesitcomethatitsoonbecomepervasivearoundAsiaandallovertheworld.Suchkindofdiseaseoccursnotonlyinthedevelopingcountriesbutalsointhedevelopedcountries.Peoplewhohavecaughtthediseasewillsufferfromhighfever,muscleache,runnynoseandsorethroat.Somemayevengeteyeproblemandhavedifficultybreathingatalaterstage.AvianInfluenzabecomesanepidemicwhichhasseriouslyaffectedpeople'sdailylifeandnationaleconomyaswell.Itisevidentthatsuchphenomenoncanbeattributedtothefollowingreasons.Directcontactwiththeinfectiouspoultrywhichmakespeoplefallillisviewedasthemajorreason.Furthermore,contaminatedobjectsincludingdailynecessitiesmaycastamalignantshadowonpeople'slife,throughwhichpeopleeasilygetinfected.Finally,breathandfoodtransmissionmakespeoplehorrifiedinthemulti-organfailure.AvianInfluenzafactuallyprovokesfearandpanicamongthenativesandtouristsaswell.Inmyopinion,AvianInfluenzamaycausetheglobaloutbreakofthediseaseifitisnotbroughtunderthecontrol.Governmentshouldmonitorthewholesituation,establishingthewarningsystemtopreventthepeoplefrominfectionandadoptingtheemergencyresponsemechanismtoreducethedeathrate.Moreimportant,peoplemustberesponsibleforthemselves.Theyshouldenjoygoodhabitandlifestyle.suchasself-cleaningandprotection,thoroughcookingofpoultrymeat,separationofrawfoodfromthecookedfood,andetc.Onlyinthisway,canwereallyavoidthedisaster.

3.AwayfromNet-barCampaignIthasbeenreportedthatamiddleschoolinXuzhouCityhasrecentlylaunchedacampaignnamed"AwayfromNet-bar".Morethanathousandstudentshavesignedfortheirsolemnpromisethattheywillnotspendasingleminuteinthenet-bars.Withthecomingofthesummervacationthiscampaignisespeciallymeaningfulforthehealthydevelopmentoftheminors.TheInternethasbroughtpeoplegreatconvenienceingettinginformationentertainingandcontactingeachotherandithasalsobenefitedsomebusinessmenespeciallytheownersofnet-barsWhileitistruethatmostnet-barsarerunninglegallyitisalsohuethatsomeareofferingunhealthyprogramsthatinvolveviolenceandsexcontent.Sincemostmiddleschoolstudentsarepronetobeinfluencedandtheycanhardlytellwhichbarisdoingwellandwhichoneisnotitisonlyadvisablethattheyshouldstayawayfromall.Besidesstayingawayfromnet-barsisalsogoodtostudents'physicalhealth.Bypassivelysittingtoolonginfrontofthecomputerscreenboththeireyesightandphysiquesuffer.ObviouslytheAwayfromNet-barsCampaignisanactivitythatisworthadvocatinganditmeritsotherschools'reference.AwayfromNet-barCampaignIthasbeenreportedthatamiddleschoolinXuzhouCityhasrecentlylaunchedacampaignnamed"AwayfromNet-bar".Morethanathousandstudentshavesignedfortheirsolemnpromisethattheywillnotspendasingleminuteinthenet-bars.Withthecomingofthesummervacation,thiscampaignisespeciallymeaningfulforthehealthydevelopmentoftheminors.TheInternethasbroughtpeoplegreatconvenienceingettinginformation,entertainingandcontactingeachother,andithasalsobenefitedsomebusinessmen,especiallytheownersofnet-bars,Whileitistruethatmostnet-barsarerunninglegally,itisalsohuethatsomeareofferingunhealthyprogramsthatinvolveviolenceandsexcontent.Sincemostmiddleschoolstudentsarepronetobeinfluencedandtheycanhardlytellwhichbarisdoingwellandwhichoneisnot,itisonlyadvisablethattheyshouldstayawayfromall.Besides,stayingawayfromnet-barsisalsogoodtostudents'physicalhealth.Bypassivelysittingtoolonginfrontofthecomputerscreen,boththeireyesightandphysiquesuffer.Obviously,theAwayfromNet-barsCampaignisanactivitythatisworthadvocatinganditmeritsotherschools'reference.

4.THEMARVELSOFMEDICINEINTHETWENTIETHCENTURYLookingbackthetwentiethcenturyhasseennumerousscientificandtechnologicachievementsandwhatstandouthighaboveothersareadvancesinmedicalscience.Theirresultshaveclearlybeenshowninthreeareasdevelopmentofvaccinesandantibioticsdiscoveriesofnewdiagnosismethodsandtheadventofgeneticengineeringasanewbranchoflearning.Eversincemedicalresearchersstartedtodevisewaysofpreventinggermsinvadingthebodyandoffightingthemoncetheydidthequalityoflifeforpeopleintheworldhasremarkablyimproved.Todaysmallpoxisaforgottendiseaseandvaccinationsarenolongerrequired.Polioisundercontrolandthevaccineiswidelyavailable.Thedevelopmentofsuchantibioticsaspenicillinhashelpedmanypeoplerecoverfromseriousillness.Overthepastdecadesmoreandmoredoctorshavecometorealizetheimportanceofdetectingchangesinthebodyatanearlystage.Moderndiagnosisbeganintheearly1900swiththediscoveryofX-rays.Withthepassageoftimenewmethodsforviewingtheinteriorofthebodywerebroughtoutoneafteranother.Inrecentyearsultrasonicwavesmagneticresonanceandothertechniqueshavemadeitpossibletodetectanythinginthebodythatisbeginningtobeabnormal.Medicaladvanceshavebeenmovinginevenmorefundamentaldirections.Scientistshavefoundthatthebodymachineryisdirectedbythegenes.Researchesinthisfieldhaveevolvedintoanewbranchoflearning—geneticengineering.Itwasonlyinthe1950sthatscientistsdiscoveredthekindofstructuresthegeneshave.Andattheendofthetwentiethcenturythefirst"roughmap"ofthehumangeneticcodewascompleted.Thiswasreferredtoasa"majorscientificmilestone"whichmightleadtoamorefullyunderstandingofthegenesthatmakepeoplesusceptibletocancerAIDSParkinson'sorAlzheimer's.Witheachimportantdiscoverythepracticeofmedicinehasundergonearevolution.Themedicaladvancesmadeinthetwentiethcenturyhavenotonlyimprovedthelivesofmanypeoplebutalsolaidasolidfoundationforfurtherdevelopmentinmedicine.AndIdobelievethatinthe21stcenturyscientistswillworkevengreaterwondersintheareaofmedicalscienceandeventuallyfindcurestowhatarenowcalled"incurable"diseases.THEMARVELSOFMEDICINEINTHETWENTIETHCENTURYLookingback,thetwentiethcenturyhasseennumerousscientificandtechnologicachievements,andwhatstandouthighaboveothersareadvancesinmedicalscience.Theirresultshaveclearlybeenshowninthreeareas,developmentofvaccinesandantibiotics,discoveriesofnewdiagnosismethods,andtheadventofgeneticengineeringasanewbranchoflearning.Eversincemedicalresearchersstartedtodevisewaysofpreventinggermsinvadingthebody,andoffightingthemoncetheydid,thequalityoflifeforpeopleintheworldhasremarkablyimproved.Todaysmallpoxisaforgottendisease,andvaccinationsarenolongerrequired.Polioisundercontrolandthevaccineiswidelyavailable.Thedevelopmentofsuchantibioticsaspenicillinhashelpedmanypeoplerecoverfromseriousillness.Overthepastdecadesmoreandmoredoctorshavecometorealizetheimportanceofdetectingchangesinthebodyatanearlystage.Moderndiagnosisbeganintheearly1900swiththediscoveryofX-rays.Withthepassageoftime,newmethodsforviewingthe