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1Unit1EncyclopaediasLookitup!Herearetwoarticlesfromanencyclopaedia.DaVinci,LeonardoLeonardodaVinci(1452-1519)wasanItalianpainter,inventor,musician,engineerandscientist.DaVinciwasborninthecountryside.Fromanearlyage,heshowedgreatintelligenceandartisticability.Ashegrewolder,helearnttodomanydifferentthings.Hispaintingsareveryfamous,andone,theMonaLisa,isperhapsthemostfamouspaintingintheworld.Healsohadmanyinventions.Forexample,hisnotebooksincludesomeinterestingdrawingsofflyingmachines.(SeeArt)DinosaursDinosaurslivedonEarthmorethan60millionyearsbeforehumanbeings.TheylivedeverywhereonEarth.Somedinosaurswereassmallaschickens.Otherswereasbigastenelephants.Somecouldevenfly.Manydinosaursateplants.However,somedinosaurslikedtoeatmeat.DinosaurslivedonEarthformorethan150millionyears.Then,suddenly,theyalldiedout.Nobodyknowswhy.However,wecanlearnaboutthemfromtheirfossils.(SeeEarthhistory)查找它这里有来自百科全书的两篇文章。列奥纳多•达•芬奇列奥纳多•达•芬奇(1452-1519)是意大利画家,发明家,音乐家,工程师和科学家。达芬奇出生在农村。从很小的时候,他表现出极大的智慧和艺术才能。当他长大时,他学会了做很多不同的事情。他的画是非常出名的,其中一个,蒙娜丽莎,也许是世界上最著名的画。他也有很多发明。例如,他的笔记本包括一些有趣的飞行机器的图画。(见艺术)恐龙恐龙生活在地球上人类6000万多年前。他们生活在地球各个地方。一些恐龙和鸡一样小。其他的有十头大象一样大。一些甚至可以飞。许多恐龙吃植物。然而,一些恐龙喜欢吃肉。恐龙在地球上生活了1.5亿多年。然后,突然,他们都灭绝了。没有人知道为什么。不过,我们可以从化石中了解他们。(见地球历史)4Unit4InventionsGreatinventionsGreatinventionschangetheworld.Theyhelppeopleliveabetterlife.Thefollowingarethreeofthemostimportantinventionsinhistory.ThewheelThewheelisperhapsthegreatestinventioninhistory.Afteritsinvention,travellingbecamefasterandmorecomfortable.Afewthousandyearsago,peoplestartedtousewheelsoncarriages.Intheearly19thcentury,thefirsttrainsbegantocarrypassengers.Atthestartofthe20thcentury,carsbecamepopular.Withoutthewheel,wewouldnothavetheseinventions.ThetelephoneAlexanderGrahamBellinventedoneofthefirstpracticaltelephonesin1876.Sincethen,peoplehavebeenabletospeaktoeachotheroverlongdistances.Todaymillionsofpeopleacrosstheworldownmobilephones.Theyallowpeopletokeepintouchwitheachotheranytime,anywhere.ThelightbulbThomasEdisondevelopedthefirstpracticallightbulbin1879.Beforetheinventionofthelightbulb,peoplehadtouseoillamps,gaslampsorcandlestoseeatnight.Withlightbulbs,peoplecandoasmanythingsintheeveningastheycaninthedaytime.Canyouimaginelivingwithoutthem?伟大的发明伟大的发明改变世界。他们帮助人们过上更好的生活。以下是三个历史上最重要的发明。轮子车轮也许是历史上最伟大的发明。它发明后,旅行变得更快、更舒适。几千年前,人们开始使用轮子在马车上。在19世纪早期,第一列火车开始载客。20世纪初,汽车开始流行起来。没有轮子,我们将没有这些发明。电话亚历山大•格雷厄姆•贝尔于1876年发明了第一个实用的电话。从那时起,人们已经能够长距离彼此说话。今天世界各地数以百万计的人们拥有手机。他们使得人们彼此保持联系在任何时间,任何地方。灯泡托马斯•爱迪生在1879年开发第一个实用的灯泡。在灯泡的发明之前,在晚上人们必须使用油灯,气体灯或蜡烛来看。有了灯泡,人们在晚上可以像在白天一样做尽可能多的事情。你能想象没有他们的生活吗?5Unit5EducationalexchangesAnexchangevisitiseducationalandinteresting!AgroupofBritishstudentsfromWoodparkSchoolinLondonarevisitingXinhuaJuniorHighSchoolinBeijingonaneducationalexchange.“Iwasverynervousatfirst,”saysSarah.“However,myhostfamilyarereallyfriendly.I’mgladtobeaguestintheirhome.I’velearnttousechopsticks,andthey’reteachingmealittleChinese!”ThestudentsspendtheweekdaysstudyingwithChinesestudents.Attheweekend,theytouraroundBeijingandvisitplacesofinterestwiththeirhostfamilies.“It’sbeenafantasticexperiencesofar,”saysEric.“I’velearntabitoft’aichi,andIreallyenjoyit.We’vealreadylearntalotaboutChinesecultureandhistory.TheteachershaveintroducedustoChinesepaintingaswell.We’llalsotriedtopaintsomepicturesourselves!Ihaven’thadmuchsuccessyet,butI’llkeeptrying.”“I’vemademanynewfriends,”saysSarah.”IplantokeepintouchwiththemwhenIreturnhome.We’llseeoneanothersoonbecausethey’llcomeovertotheUKforthesecondpartoftheexchangenextmonth.Ican’twait!”教育交流交换访问有教育意义，并且很有趣!一批来自伦敦Woodpark学校的英国学生正在一次教育交流中访问北京新华初中学校。“一开始我很紧张,”莎拉说。“不过,我的寄宿家庭真的很友好。我很高兴成为他们家里的一个客人。我已学会了用筷子,并且他们正在教我一些汉语!”学生们平日和中国学生一起学习。周末,他们到北京周边旅游，和他们的寄宿家庭一起参观名胜古迹。“迄今为止都是一个奇妙的经历”，埃里克说。“我已经学会了太极拳,,我真的很喜欢它。我们已经学到了很多关于中国文化和历史。老师还向我们介绍中国画。我们还将尝试自己画一些画!我还没有取得成功,但我会继续努力。”“我已交了许多新朋友,”莎拉说。“我打算当我回到家与他们保持联系,。我们很快就能见到彼此,因为他们将在下个月第二部分交流的时候来英国。我等不及了!”6Unit6AncientstoriesTheTrojanhorseThecapitalstoodonthehighwallofthecityofTroy.“TheGreekshavegoneandwe’vewon,”hesaid.“They’vetriedtocaptureourcityfortenyears.Nowthey’vegivenupandsailedaway!”“Butlookoverthere,”asoldiersaid.“They’veleftahugewoodenhorse.”“Ah,yes,”thecaptainsaid,“it’stoobig.TheGreeksdidn’twanttotakeitwiththem.Getsomehelpandpullitintothecity.”Thatnight,inthemainsquareofthecity,alltheTrojanscelebrated.Theysanganddancedaroundthehorse,andmadejokesaboutthestupidGreeks.“Ihaven’tlaughedlikethissincemychildhood,”thecaptainsaid.Aftertheparty,theylockedallthegatesofthecityandthenallwenttosleep.Bymidnight,themainsquarewasempty,exceptforthehugehorse.Suddenlyasecretdooropenedonthesideofthewoodenhorse.ThehorsewasfullofGreeksoldiers!Theyquietlyclimbedoutofthehorseonebyone.Thesoldiersopenedthemaingates.TheGreekarmyenteredthecity.Fortenyears,theGreekscouldnotcapturethecitybyfighting.Inonenight,however,theysucceededincapturingitthroughaclevertrick.古代故事特洛伊木马首领站在特洛伊城的高墙上。“希腊人已经走了,我们赢了,”他说。“他们试图占领我们的城市已经十年了。现在他们已经放弃并且起航走了!”“但看那边,”一名士兵说。“他们留下了一个巨大的木马。”“啊,是的,”船长说,“它太大了。希腊人不想带着它。找些帮手把它拖进城。”那天晚上,在城市的广场,所有特洛伊人在庆祝。他们在马边唱歌跳舞,开着关于愚蠢的希腊人的玩笑。“我自小时候起就没有这样笑了,”首领说。晚会之后,他们锁了城市的所有大门,然后去睡