高中英语必修3_Unit4课件 17页

Unit4Astronomy:thescienceofthestars第17页共17页systemn.系统；体系；制度theoryn.学说；理论violentadj.猛烈的；激烈的；强暴的intime及时；终于unlikeprep.不同；不像harmfuladj.有害的layeggs下蛋existvi.存在；生存givebirthto产生；分娩inone’sturn轮到某人；接着prevent...from阻止；制止puzzlen.谜；难题vt.&vi.（使）迷惑；（使）为难pulln.&vt.拉（力）；拖；牵引力cheerup感到高兴；感到振奋nowthat既然breakout突发；爆发watchout密切注视；当心；提防第17页共17页要点讲解【重点单词】1.exist存在，生存existin存在于......之中exist靠......之中Thereexists/existed...某地有......;存在......comeintoexistence产生；成立；开始存在inexistence存在Thelaid-offworkersmainlyexistonbreadandtea.下岗工人主要靠面包和茶生存。Thereexistsagoodwaytosolvetheexistingproblemingeography.有一个解决目前地理问题的好方法。Doyouknowwhentheworld.cameintoexistence?你知道世界是什么时候产生的吗？Exercise:Nowpeopledon'tbelieveinthe(exist)ofghost.答案：existence【重点短语】1.intime及时；终于【相关短语】intimeforsth./todosth.及时；不迟innotime立刻；马上atnotime永不……atonetime有个时期；曾经；一度atatime一次；每次attimes=sometimes有时allthetime一直；始终；老是第17页共17页\nontime按时；准时bythetime到……的时候为止forthetimebeing暂时；暂且takeone’stime不着急；慢慢来killtime消磨时间fromtimetotime不时地，间或manyatime常常；多次onceuponatime从前atthesametime同时；尽管如此aheadoftime提前，提早raceagainsttime争分夺秒timeandagain一次又一次；重复地keeptime(钟表)走得准keepbadtime（钟、表）走得不准takeone’stime慢慢来，别急haveagood/nice/hardtime(in)doingsth做某事很……It’s(high/about)timethatsb.did/shoulddosth.是做某事的时候了Thedoctorcameintimetosavetheboy.医生及时赶来救了那个孩子Youwillsucceedintime.你迟早会成功的Ijumpedintotheriverinnotime.我立刻跳到了水中。Ilostmyselfatonetime.曾经一度我迷失了我自己。It’shightimethatthegovernmentmadeanadjustmentontheexportdrawbacksystem.早该到政府对出口滞后体系进行调整的时候了。【Exercise】______,IlostheartinEnglishlearning,butmyteacheroftensaidtome,"Keeponstudyinghard,andyou'llsucceed."A.Atatime;intimeB.Atatime;ontimeC.Atonetime;intimeD.Atonetime;ontime答案：选C，曾一度，我对英语学习失去信心，但我老师常对我说：“坚持不懈的努力，最终会铸就你的成功”。Atatime"每次"，atonetime"曾经，一度"，相当于once;intime"及时，迟早"，ontime"按时，准时"。2.prevent...from....使……不做事；阻止……做某事例如：Hisbackinjurymaypreventhimfromplayingintomorrow’sgame.他背部的伤可能使他参加不了明天的比赛。【辨析】prevent/stop/keepsb.fromdoingsthprevent/stopsb.fromdoingsth.中的from可省,keepsb.fromdoingsth.中from不可省略，因为keepsb.doingsth.是“使某人一直做某事”之意；但如在被动语态中，三者的from都不可省；当后接sb’sdoingsth.作宾语时，只能用prevent或stop，不能用keep，因为没有keepsb’sdoingsth.的句型。第17页共17页\n【Exercise】根据句子的意思完成句子或翻译。1).Doctorstookactionto___________________________________(防止这种疾病的蔓延).2).OfcourseIcan’t_______yourgoingabroad.3).警察阻止他们携带武器。_______________________________________________________________________________【答案】:1).prevent/stop/keepthediseasefromspreading2).prevent/stop3).Thepoliceprevented/stopped/keptthemfromcarryingweapons.=Theywereprevented/stopped/keptfromcarryingweapons.3.nowthat既然辨析：nowthat/because/since/as/for(1)nowthat是固定短语，意为“既然，由于”，引出原因状语从句。that可省。(2)because"因为"，表示直接的或为人所不知的原因。用于回答why提问的句子。(3)since“既然”（可与nowthat互换），侧重主句。(4)as"由于"，表示显而易见或已为人所知的原因。(5)for"因为"，并列连词，引导一个分句，不能置于句首。Now(that)youaregrown-up,youmuststopthischildishbehaviour.(=since)既然已经长大，你必须停止这种幼稚行为。Hewasabsentfromthemeetingbecausehewasillyesterday.昨天他没有参加会议是因为他病了。Wearstrongshoesasweshalldoalotofwalking.穿上结实的鞋子因为我们要走很多路。Itmusthaverainedlastnight,forthegroundiswet.4.breakout突发；爆发【相关短语】breakawayfrom脱离（党派）；摆脱（控制）breakdown毁掉；坏掉；(计划/谈判)失败breakup打碎；拆散；(会议)结束；分裂(解体)breakoff(使)停止；中断；折断breakintosth.强行进入某处breakone’sword/promise食言；说话不算数【辨析】comeabout/happen/takeplace/breakout/occurcomeabout发生，相当于happen,takeplace。后面不可以给宾语，也不可以使用被动语态。Howdiditcomeaboutthatyougotlost?你怎么会迷路了哪？第17页共17页\nhappen强调偶然发生takeplace指按计划、按安排发生breakout多用于指战争、火灾、疾病、疫情的突然爆发occur常用于句式：sthoccurstosb以上这些单词和短语的主语都不可以是人，也不可以用于被动语态【Exercise】用break短语填空。1).Aterribleearthquake______________inJapanonMatch12,2011.2).Negotiationsbetweenthetwosideshave______________.3).Hishousewas______________lastweek.【答案】1).brokeout2).brokendown3).brokeninto【重点句型】1.Thisproducedachainreaction,whichmadeitpossibleforlifetodevelop.这就产生了一系列的反应，使得生命就有可能发展了。1）it作形式宾语，在句中可代替动名词，不定式，从句等2）it作形式主语，常用句型有：It's+adj.+forsb.todosth.对某人来说做某事.....It's+adj.+ofsb.todosth.某人如此......而做某事It'ssaid/reported/thoughtthat.....据说/报道/认为.......It'sapity/awonder/ashamethat......可惜/奇怪/遗憾的是.......Ithappens/appears/seemsthat.....恰巧/好像......Hisabsencemadeitdifficulttofinishtheworkontime.Weconsideritnousearguingwithhim.Ithappenedthattheywereoutwhenwecalled.Exercise:Iwillappreciateifyoucancometomypartytomorrow.A.thatB.thatitC.itthatD.it答案：D2.第17页共17页\n【exercise】Muchtohissurprise，heinvitedonlytwentyfriendstothedinner，butcame．A．twiceasmanyasB．asmanyastwiceC．twiceasmanyD．twicemorethan答案：C语法核心突破Nounclausesasthesubject主语从句1．定义：主语从句：在复合句中充当主语的句子叫主语从句例如：How he was successful is still a puzzle. 他是如何成功的仍然是个谜。2. 连接词的选用（1）that和what的选用第17页共17页\nthat和what都可引导主语从句。what除起连接作用外，还在名词性从句中充当某些成分，可作从句的主语、宾语或表语。而that在名词性从句中不充当任何成分，无词义，只起连接词作用如：What he wants is a book. 他想要的是一本书That light travels in straight lines is known to all. 众所周知，光线沿直线运行（2）if和whether的选用引导主语从句，不能用if，只能用whether。如：Whether we will hold a party in the open air tomorrow depends on the weather. 我们明天是否在户外开晚会要看天气而定（3）其它连接代词和副词的选用根据主语从句的具体意义，正确的选择who, which, when, where, why, how等连接词，这些连接词既有疑问含义，又起连接作用，同时在从句中充当各种成分如：When we shall hold our sports meet is not decided. 我们何时举行运动会还没有决定。Who broke the glass yesterday is not clear. 还不清楚昨天谁打破了玻璃Which car you will choose to buy makes no difference. 你决定买哪一辆车都不会有任何区别（4）whatever / whoever的功用whatever, whoever在主语从句中不含疑问意义。它引导主语从句，并在从句中作主语、宾语、表语等。whatever = anything that; whoever = anyone who。要注意和whatever, whoever引导的让步状语从句的区别如：Whoever breaks the law should be punished. （主语从句）（＝Anyone who breaks the law should be punished. ）Whoever breaks the law, he should be punished. （让步状语从句）（＝No matter who breaks the law, he should be punished. ）3. it构成的主语从句第17页共17页\n（1）由连词that引导的主语从句，在大多数情况下会放到句子的后面，而用代词it作形式主语。如：It is well-known that the earth moves around the sun. 众所周知，地球围绕太阳转。【拓展延伸】需要注意的是，it作形式主语代替主语从句时，要注意和as引导的定语从句的区别。试比较：It was reported that the US was under the terrorist attack. （主语从句，有that，无逗号）As was reported, the US was under the terrorist attack. （定语从句，无that，有逗号）上两句意为“据报道，美国遭到恐怖分子的袭击”（2）常见用it作形式主语的复合句结构It is a fact （a good idea / a pity / a shame / no wonder / good news…）that…如：It’s a pity that you missed the film. 你没有看那部电影真是太遗憾了 It is necessary （clear / true / strange/ important /wonderful / possible / likely…）that…需要注意的是，这类主语从句中，谓语动词很多为“（should）＋动词原形”，即要用虚拟语气如：It is necessary that you （should）master the computer. 你很有必要掌握电脑It is important that a student learn English well. 学生学好英语很重要It’s clear that they badly need help. 很明显，他们急需援助It is likely that a hurricane will arrive soon. 飓风很可能马上就要到达了。It is reported （well-known / hoped / thought / expected /said /believed/decided /suggested /ordered…）that…如：It is said that he was killed in the earthquake. 据说他在地震中丧生了It seems （happened / appears / doesn’t matter / makes no difference / …）that …如：It seems that they will win the game. 看起来他们好像会赢得这场比赛第17页共17页\nIt makes no difference whether he will attend the meeting or not.【典型例题】1、_____intheregulationsthatyoushouldnottellotherpeoplethepasswordofyoure-mailaccount.  A.WhatisrequiredB.Whatrequires  C.ItisrequiredD.Itrequires【解析】C。本句的结构为Itis+动词的过去分词+that引导主语从句。经常用于这种结构的动词还有say,report,think,hope,expect,consider,suggest等2._________madetheschoolproudwas_________morethan90%ofthestudentshadbeenadmittedtokeyuniversities.A.What;because   B.What;that   C.That;what   D.That;because【解析】B。what引导主语从句，在主语从句中作主语；that引导表语从句，在表语从句中起连接作用3、________shecouldn'tunderstandwas ________fewerandfewerstudentsshowedinterestinherlessons.A.What...why  B.That...what   C.What...because  D.Why...that【解析】A。主语从句shecouldn'tunderstand缺少宾语，要用What引导。表语从句fewerandfewerstudentsshowedinterestinherlessons是一个完整的句子，要用why引导，意思是“为什么越来越少的学生对她的课感兴趣”【语法专练】1.I’msurethatitisobvious_______GinawaslyingforIsawherinthestreetyesterday.A.whichB.thatC.becauseD.when2.______breakstherulesshouldbepunishedandfinedatleast200yuan.A.NomatterwhomB.NomatterwhoC.WhomeverD.Whoever3._____isknowntousallisthatthe2008OlympicGameswilltakeplaceinBeijing.A.ItB.WhatC.AsD.Which4.---Whatmadehimsoupset?第17页共17页\n  ---______shefailedinherexamination.A.What        B.That          C.Because    D.Whether5.Determinationisakindofbasicqualityandthisis_______ittakestodojobswell.世纪金榜A.whatB.thatC.whichD.who世6.AlongwithhisletterwashispromisehewouldattendtheopeningceremonytheComingmonth.A.whichB.thatC.whatD.whether7.Thereformhaschangedthewholenation.Itcannotremain_________itusedtobe.A.whatB.whereC.whichD.when8.WhatIwanttoknowis________thepriceofoilisstillrising.A.whenB.howC.whyD.that答案：1~5BDBBA6~8BAC高考真题链接1.（2010·全国卷ＩＩ·T20）Mr.Blackisveryhappybecausetheclothesmadeinhisfactoryhaveneverbeen________.A.popularB.morepopularC.mostpopularD.themostpopular【解析】选B。考查比较级的使用．否定比较级相当于肯肯定。类似的还有too,enough。2.（2010·北京卷·T33）somepeopleregardasadrawbackisseenasaplusbymanyothers.A.WhetherB.WhatC.ThatD.How【解析】选B。本题考查主语从句。句意：一些人眼中的缺点是别人眼中的优点。从句中缺宾语，只能用B.what来引导.C.中的That引导主语从句不做成分。3.（2009·山东卷·T21）-------JohnandIwillcelebrateourfortiethweddinganniversarynextmonth.--------Oh,_________!A.cheerupB.welldoneC.goaheadD.congratulations【解析】选D　本题考查交际用语中单词（短语）的区别，根据题意可知：这儿应用一个表示祝贺的词（短语）。故选D。第17页共17页\n4.(2009·山东卷·T28)Thelittlegirlwhogotlostdecidedtoremain_________shewasandwaitforhermother.A.whereB.whatC.howD.who【解析】选A　本题考查连词，remain是系动词，后加表语从句，由句意可知，从句缺地点状语，所以选A。5.（2009·天津卷·T7）Itisobvioustothestudents______theyshouldgetwellpreparedfortheirfuture.A.asB.whichC.whetherD.that【解析】选D考查名词性从句中的主语从句用法。此处要分析句子结构，看出it为形式主语，代替thattheyshouldgetwellpreparedfortheirfuture，并且本句意思完整，故选D。综合效能检测一、听力（略）二、单项选择21.Hefelt_________whenhefoundastranger_________aboutatthegateofthepolicestation.A.puzzling;hungB.puzzled;hungC.puzzling;hangingD.puzzled;hanging22.Asonlyonechapterofthenovelwaspublished__________inthenewspaper,manyreaderspreferredtobuyacopyofthenovel.A.atonetimeB.atatimeC.attimesD.intime23.China’snewfoodlawprovidesforafoodrecall（召回）system______producershavetostopproductioniftheirfoodisn’tuptostandards.A.whereB.thatC.whenD.which24.WhatwillhappentothechildifJimandMary________?A.breakdownB.breakupC.breakoutD.breakoff25.Accordingtotheregulationsofthecompany，youmustn’taskforleaveyouhavea第17页共17页\ndoctor’sdiagnosednote．A．unlessB．nowthatC．eventhoughD．onconditionthat26.WhetherwayswillbefoundtohelpChina_______thecurrentworldfinancialcrisisisjust_______worriesthepublic.A．prevent;thatB．survive;whatC．forbid;thatD．quit;what27.WhatIamlookingforis_____bookthatcontains_____ABCofcomputer.A.a；不填B.a;theC.the;anD.the;不填28.—Ihaven’tfoundanymoneythoughI’vesearchedthedrawerbottomup.教学资源网—Then.I’mafraidthereisleft.A．nothingB．nooneC．noneD．neither29.Muchtohissurprise，heinvitedonlytwentyfriendstothedinner，butcame．A．twiceasmanyasB．asmanyastwiceC．twiceasmanyD．twicemorethan30.Shehadnoideahowit_____thatherhusbandmetwithtroubleagain.A.cameaboutB.cameoutB.cameacrossD.cameup31.Itissaidthatthemeeting______forthreehours.WhyshouldIregretmissingit?!A.haslastedB.hasbeenlastingC.lastedD.hadlasted32._____whichonetobuybetweenthetwonecklaces,shepurchasedboth.A.DecidingB.NotdecidingC.TodecidedD.Nottodecide33.fashionsdifferfromcountrytocountrymayreflecttheculturedifferencefromoneaspect.A．WhatB．ThatC．ThisD．Which34.Ican’tunderstandishewantstochangehismind.A.That,whatB.That,whyC.What,whatD.What,why35.Isittrue_____therainstops,itwillbeashotasinthesummerhere?A.whenB.thatwhenC.wheneverD.that第17页共17页\n三、完形填空Scientificexperimentscansometimesgowrongandwhentheydothem,resultsmayrangefromthedisastroustothetroubling.Onesuch36tookplaceinSouthAmericaaboutfifty37ago.Whetherits38consequenceswillcauseseriousdamageornothingmorethanasmalltroublestillremainstobeseen.Thestorybeganin1956whenanAmericanscientistworkinginBrazildecidedtosolvetheproblemof39theproductivityofthatcountry’sbees.Heimportedavery40typeofAfricanbeefromTanzaniaandmated（交配）itwiththemoreeasy-goingnativevarietytoproduceanewkindofbees.Thenewbeesworkedharderandproducedtwiceasmuchhoney.ItseemedthatProfessorKerr,forthatwasthescientist’sname,wasentirely41.Thenthingsbegantogowrong.Forsome42asyetunseen,butperhapsasaresultofsomethingintheirenvironment,thenewbeesbeganto43extremelyattackingpersonalities.Theybecamebad-temperedandeasytobe44,attackedthenativebeesand45themfromtheirlivingplaces.36.A.disasterB.accidentC.incidentD.experiment37.A.daysB.weeksC.monthsD.years38.A.lastB.finalC.totalD.first39.A.increasingB.reducingC.makingD.controlling40.A.passiveB.activeC.nativeD.primitive41.A.carefulB.gratefulC.successfulD.successless42.A.reasonB.excuseC.causeD.explanation43.A.stopB.developC.acceptD.receive44.A.hungryB.angryC.heavyD.terrible45.A.tookB.droveC.chasedD.killed四、阅读理解ATheUSA,NewYork–Whalesanddolphinsarefacingincreasingthreatsfromclimatechange,accordingtoanewreportpublishedbyWWFandtheWhaleandDolphinConservationSociety（WDCS）.Thereport“Whalesinhotwater?”drawsattentiontothegrowingimpactsofclimatechange第17页共17页\nonwhales.Theyrangefromchangesinseatemperatureandthefresheningoftheseawaterbecauseofthemeltingoficeandincreasedrainfalls,toasealevelrise,lossoficypolarhabitatsandthedeclineofkrillpopulationsinkeyareas.Krill,atinyshrimpthatisdependentonseaice,isthemainsourceoffoodformanyofthegreatwhales.Thespeedingupofclimatechangeaddsgreatlytotroublefromotherhumanactivities,suchaschemicalandnoisepollution,whichkillssome1000whaleseveryday.“Whalesanddolphinshaveanabilitytoadapttotheirchangingenvironment,”saidMarkSimmonds,InternationalDirectorofScienceatWDCS.“Buttheclimateisnowchangingatsuchafastpacethatitisuncleartowhatextentwhalesanddolphinswillbeabletoadjust.”ClimatechangeimpactsarecurrentlygreatestintheArcticandtheAntarctic.Accordingtothereport,cetaceansthatrelyonpolar,icywatersfortheirhomeandfoodresourcesarelikelytobegreatlyaffectedbythereductionofseaicecover.WDCSandWWFareurginggovernmentstocutglobalproductionofCO2byatleast50percentbythemiddleofthiscentury.ThelatestreportoftheIntergovernmentalPanelonClimateChangeshoweditwaspossibletostopglobalwarmingiftheworld’semissionsstarttodeclinebefore2015.46.What’sthetypeofliteratureofthispassage?A.StoryB.Announcement.C.NewsD.Novel47.Fromthepassage,wecanlearnthatwhalesmainlyfeedon______.A.dolphinsB.krillC.seahorsesD.sharks48.Whichofthefollowinghasthesamemeaningastheunderlinedword“decline”?A.increaseB.reduceC.riseD.fall49.Inwhatplaceisclimatechangegreatest?A.ThepacificoceanB.Asia.C.Twopolarareas.D.Equator.50.Whichofthefollowingisnotrightaccordingtothepassage?A.Climatechangewillleadtothechangesinseatemperature.B.Climatechangewillresultinthefresheningoftheseawater.C.Climatechangewillhaveabadeffectonhumanactivitiesandwhales.D.Humanbeingswillforeverhavenoabilitytostopglobalwarming第17页共17页\nBThequalityofdrinkingwaterinShanghaiwillmeetEuropeanUnionstandardby2010and,adecadelater,citizensinShanghaiwilldrinkthebestwaterintheworld.ThesewerethegoalssetoutbytheShanghaiWaterAuthority.Withthecity’spopulationexpectedtoincreaseonlyslightlyandtheeconomytoboomby2020,ChenYin,andofficialwiththewaterauthority,saidShanghai’swaterconsumptionwillnotincreasefromitspresentamount.ZhangYue,directoroftheUrbanConstructionDivisionundertheMinistryofConstruction,said,“Shanghaiisthefirstcityinthecountrytopublicizetheseambitions.Theywillnotbeeasytoachieve.”HesaidwatersavingwillhelpkeepthesustainabledevelopmentofChina’seconomy.Savingonecubicmeterofwatermeanssavingthecity’sinfrastructure（基础设施）costsby10,000Yuan.Lastyear,Shanghaisaved300millioncubicmetersofwatereitherfromreadjustmentofindustrialstructureortheemploymentofnewtechnology.“Theaimistoarousepublicawarenessoftheseriousnessofwatershortages,”Chensaid.“Theabundantsurfacewaterandamountofrainofthecityaresomisleadingthattheyresultinimproperuseofwater.”Shanghailacksdrinkablewater.TheHuangpuRiver,whichsupplies80percentofthecity’sdrinkablewater,isnearingexhaustion.Thecity,therefore,hasbeenexploringnewsourcesfromtheYangtzeRiverandgrowingforestsalongittoconservequalitywater.Besidespenningregulations,theauthorityispopularizingtechnologyamongthepublictoefficientlycuttheamountofwaterused.Atpresent,thecityhas600，000familytoilets,eachusing13litersofwaterperflush.Thesearetoberenovated（整修）touseonly9litersofwaterperflush.Theauthorityisrenovatingthefirst200toiletsforhouseholds–atacostof40Yuaneach.Inthreeyears,allthetoiletswillberenovated,whichsavesthecitynearly15millionYuaneveryyearinwaterconservation.Anothertaskthecityisengagedinisthetreatmentofsewage（污水）toimprovethewaterenvironment.第17页共17页\nAtpresentthecitycanonlytreat44percentofitsdaily5.04milliontonsofwastewater.Tomeetthetotaldemand,27moresewagetreatmentfactoriesaretobeestablishedwithanestimatedinvestmentof18billionYuan.51．PeopleinShanghaigettheirdailywatermainlyfromnow.A．theundergroundB．therainC．theYangtzeRiverD．theHuangpuRiver52．Accordingtothepassage,somepeoplehavethewrongopinionofusingwaterbecause.A．therenovatingoffamilytoiletswillsaveplentyofwaterB．abouthalfofwastewaterhasbeentreatedalreadyC．advancedtechnologymakespeopleusewaterasmuchaspossibleD．thereisplentysurfacewaterandlargeamountofrainatpresent53．Theauthorityisrenovatingthefirst200toiletsforhouseholdsto.A．makepeople’slivingmoreconvenientB．improvepeople’slivingstandardsC．easeemploymentpressureD．meetthetotaldemandofwater54．Whichgroupofmeasuresareallmentionedinthepassagetosavewater?a．improvedrinkingwaterqualityb．changesomeindustrialstructurec．introduceorusesomenewtechnologyd．speedtheeconomicdevelopmentofShanghaie．renovatesomefamilytoiletsf．buildmoresewagetreatmentfactoriesA．a,b,c,dB．b,c,e,fC．b,c,d,eD．a,b,e,f55．Wecaninferfromthepassagethat.A．theboomofeconomywillneedalargeramountofwaterinthefutureB．citizenstodayinShanghaidrinkthebestqualityofwaterintheworldC．noteveryonetodayinShanghaiisawareofwatershortageD．allthefamilytoiletswillberenovatedtosavewaterwithin3years五、用方框内所给短语的适当形式完成下列句子（其中有两个多余选项）。makeabet;goahead;byaccident;accountfor;tobehonest;inrags;getintotrouble;evenif;intime;prevent…from;nowthat;breakout1.Latelastnight,fighting_________betweengangsofrivalfootballfans.2.Theyranallthewaytothecornerjust____________toseethebusdisappearingupthestreet.3.Therewerereportsthatsomepeoplehadbeen__________votingintheelection.第17页共17页\n4.Thepilot,whether__________ordesign,madetheplanedoasharpturn.5.Canyou___________yourmovementsonthatnight?6.She’sgoingtohaveproblemsfindingajob__________shegetsAlevels.7.I’dliketo_________thatcouldbesettledbythen.8._________,Idon’tlikehimverymuch..9.Children_________beggedmoneyfromthetourists..10.Thecompany_________whenittriedtoexpandtooquickly.六、书面表达世界遗产是人类共同的财富。学校网站英语论坛将开辟专栏讨论开展“保护世界遗产，人人有责”的活动。假如你是高三（2）班的李华，请根据下面所提供的信息，写一篇英语短文，参加英语论坛的讨论。●世界遗产历史悠久，内涵丰富，是人类珍贵的文化宝藏……●面临的问题自然因素地震、沙尘暴、风化……人为因素拍电影电视、游客乱刻乱画……社会因素战争、建设……●如何保护……（请考生就自身情况列举两至三点。）注意：1．对所给要点逐一陈述，适当发挥，不要简单翻译。2．词数150左右。开头已经写好，不计人总词数。3．参考词汇：风化weathering；拍电影电视shootfilmsandTVplays；乱刻乱画scratchWorldHeritagesitesenjoyalonghistorywithrichcontent.____________________参考答案二~四21~25DBBBA26~30BBCCA31~35CBBDB36-40ＤＤＢＡＢ　　41-45CAＢBB46-50:CBDCD51-55DDDBC五、1.brokeout2.intime3.preventedfrom4.byaccident5.accountfor6.evenif7.madeabet8.Tobehonest9.inrags10.gotintotrouble第17页共17页\n六、Onepossibleversion:WorldHeritagesitesenjoyalonghistorywithrichcontent.Theyarepricelessculturaltreasuresforhumanbeings.However,WorldHeritagesitesarenowfacingmanyseriousproblems.Firstly,somesitesarebadlydamagedorcompletelydestroyedbynaturaldisasterssuchasearthquakes,sandstorms,weatheringandsoon.Secondly,manydirectorschoosethebeautifulWorldHeritagesitestoshootfilmsandTVplays.Somevisitorsscratchontheoldbuildings,stonesandtrees,andmanysitesareseriouslypolluted.Besides,constantwarsandalotofconstructionalsodogreatdamagetosomesites.Obviously,manyfactorscontributetothedamageofWorldHeritagesitesandit’sanurgenttaskforustotakestepstopreservethem…第17页共17页