中学生百科英语

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UnitoneLessonone:Thekiwi第一单元,第一课:无翼鸟ThekiwilivesonlyinNewZealand.Itisverystrangebird.Becauseitcannotkiwiisthesamesizeasahasnowingsordoesnothavefeatherslikeotherfeatherslooklikefoothasfour'sbeakisverylong.Akiwilikestohavealotoftreesaroundit.Itsleepsduringthesunlighthurtsitscansmellthingsverysmellsthingsbetterthanmostbirdskiwiseggsareverybig.There'reonlyafewkiwisinNewZealandnow.Peopledonotoftenseethem.Thegovernmentsaysthatpeoplecannotkillkiwis.NewZealanderswanttheirkiwistoisapictureofakiwiinNewZealandmoney.PeoplefromNewZealandsometimescalledkiwis.无翼鸟住在新西兰,它是一只很奇怪的鸟,因为,它不会飞,无翼鸟跟小鸡的大小相同,它没有翅膀,也没有尾巴,它没有像别的鸟一样的尾巴,它的羽毛看起来很像头发,每只脚都有4个脚指头,它的嘴巴很长。无翼鸟喜欢周围有很多树。它白天睡觉,因为,阳光会伤害它的眼睛。它的嗅觉非常好,它的嗅觉比大多数的鸟要好。无翼鸟蛋非常大.在新西兰现在只有一些无翼鸟,人们不经常看见它们,政府说人们不能杀死无翼鸟。新西兰人想要它们的无翼鸟活下去,新西兰的钱上有无翼鸟的图片,住在新西兰的人们有时被叫作无翼鸟。第一单元第四课河马Thehippopotamus河马住在非洲的热的部分,它是哺乳动物,也就是说,它的孩子们生下来是活的,而且,它们喝妈妈身上的牛奶。Thehippopotamus,orhippo,livesinthehotpartofAfrica,it’samammal,thatis,itsbabiesarebornalive,andtheydrinkmilkfromtheirmother’sbody.河马是一个很大的动物,河马的重量有四吨,它的胃是7米长,它只吃植物,河马是哺乳动物,但是,它花费很多时间在水里。Thehippopotamusisalargeanimal.Ahippoweighsfourtons.Itsstomachissevenmeterslong,iteatsonlyplants.Ahippoisamammal,but,itspendsalotoftimeinthewater.在白天,它睡在河边或睡在湖边,有时,它醒来,然后,它去水底下,得到一些植物当做美餐,它能够闭上鼻子,在水底下呆十分钟,它的耳朵、眼睛和鼻子,都在它头上高的地方。它能够停留它的身体在水底下,只有它的耳朵、眼睛、鼻子在水上面,然后它可以呼吸空气。Duringtheday,itsleepsbesideariveroralake.Sometimes,itwakesup.Thenitgoesunderthewatertogetsomeplantsforfood.Itcancloseitsnoseandstayunderwaterfortenminutes.Itsears,eyesandnose,arehighuponitshead.Itcanstaywithit’sbodyunderthewater,onlyitsears,eyesandnoseabovethewater,thenitcanbreathetheair.在晚上,河马走在陆地上,而且,寻找食物。它从不去远离水的地方Atnight,hippowalksonthelandandlooksforfood.Itnevergoesveryfarfromthewater.一个小河马,经常站立在妈妈的背上,妈妈在水底下寻找食物,小河马骑在她的背上,在水上。Ababyhippooftenstandsonitsmother’sback,themotherlooksforfoodunderthewater,thebabyhipporidesonherbackabovethewater.第一单元第五课海豚TheDolphin海豚会说话吗可能它们不会用语言说话,但是它们可以用声音说话,它们用声音来表达它们的感情。CandolphinstalkMaybetheycan’ttalkwithwords,buttheycantalkwithsounds.Theyshowtheirfeelingswithsounds.海豚成群结队的去旅行。我们把一群鱼叫做一所学校,它们不学习,但是它们一起旅行,海豚是哺乳动物,不是鱼,但是它们在学校一起游泳。Dolphinstravelinagroup.Wecallagroupoffish“aschool”.Theydon’tstudy,buttheytraveltogether.Dolphinsaremammals,notfish,buttheyswimtogetherintheschool.海豚跟在学校里其他的海豚说话。它们给信息,它们说当在它们高兴或者伤心或者害怕的时候,它们说”欢迎”当一只海豚回到学校的时候,它们玩的时候说话。Dolphinstalktotheotherdolphinsintheschool.Theygiveinformation,theytellwhentheyarehappyorsadorafraid,theysay“welcome”whenadolphincomesbacktotheschool,theytalkwhentheyplay.它们在水上面弄出一些声音。它们在水下面弄出更多的声响。人们不能听到这些声音,因为,声音很大很大,科学家录出声音的磁带和研究磁带。Theymakeafewsoundsabovewater.Theymakemanymoresoundsunderwater.Peoplecan’thearthesesoundsbecausethesoundsareveryveryhigh.Scientistsmaketapesofsoundsandstudythesetapes.有时人们抓到海豚放在很大的水族馆(一个水族馆是个鱼的动物园),人们看演出能够看见海豚。海豚不喜欢远离水族馆里面它们的学校,它们很伤心也很孤独。Sometimespeoplecatchdolphinsforalargeaquarium(anaquariumisazooforfish”.Peoplecanwatchdolphinsinashow.Dolphinsdon’tliketobeawayfromtheirschoolintheaquarium.Theyareverysadandlonely.有很多关于海豚的故事,它们帮助过人们。有时它们救命某人生命,海豚的肉很好吃,但是人们不喜欢杀死海豚。它们说海豚带来好运气,很多人相信这个。Therearemanystoriesaboutdolphins.Theyhelppeople.Sometimestheysavesomebody’slife.Dolphinmeatisverygood,butpeopledon’tliketokilldolphins.Theysaydolphinsbringgoodluck,manypeoplebelievethis.二单元第一课我们为什么打哈欠Whydoweyawn熊打哈欠,骆驼打哈欠,很多哺乳动物也打哈欠。我们为什么要打哈欠实际上没有一个人知道答案。Bearsyawn,camelsyawn,mostmammalsyawn.Whydoweyawn.Noonereallyknowstheanswer.我们知道每一个人打哈欠的方法都是一样的,首先你慢慢的张开嘴巴,你的嘴巴继续张开5秒钟,然后你很快的闭上你的嘴巴。Weknowthateveryoneyawnsinthesameway.Firstyouopenyourmouthslowly.Yourmouthstaysopenforaboutfiveminutes,thenyoucloseyourmouthquickly.我们知道打哈欠是有传染性的或者易传染。当你看到有人打哈欠的时候,你也会打哈欠,很多人说他们打哈欠是因为很无聊或者很累。这可能是真的,然而我们知道当人们兴奋或者紧张不安的时候他们也会打哈欠,参加奥运会跑步项目的运动员,比如说在赛跑之前运动员经常会打哈欠,为什么呢Wealsoknowthat,yawningiscontagiousorcatching.Whenyouseesomeoneyawn,youalsoyawn,manypeoplesaythattheyyawnbecausetheyareverybored,ortired.Thismightbetrue.Howeverweknowthatpeoplealsoyawn,whentheyareexcitedornervous,Olympicrunners,forexample,oftenyawnbeforearace.Whyisthat许多科学家认为打哈欠让你更加警觉。当你打哈欠时,你呼吸更深,你还伸展你脸部和脖子上的肌肉。可能这让你感觉更加警觉。Somescientistsbelievethatyawningmakesyoumoreaalert,whenyouyawn,youbreathemoredeeply,youalsostretchyourmuscleinyourfaceandyourneck.Maybethismakesyoufeelmorealert.科学家不花费时间研究打哈欠。那可能因为打哈欠不会伤害人,它只是我们做的某事。Scientistsdonotspendtimestudyingyawning,thatisprobablybecauseyawningdoesnothurt.Itisjustsomethingwedo.第二单元第二课为什么人们会大笑Whydopeoplelaugh你每天会大笑吗大多数人会这样做,科学家说这些人笑的次数大约一天17次,那是很多笑声。DoyoulaugheverydayMostpeopledo.Scientistssaythatpeoplelaughabout17timesaday.Thatisalotoflaughter.在印度,有几百个笑声的俱乐部,在这些俱乐部里的人,每天早晨都聚集在一起。首先,他们伸展他们的手,在他们的头上面,然后,他们假装大笑,很快地每一个人都自然地大笑起来,人们说他们一起大笑之后感觉很好。InIndia,therearehundredsoflaughterclub.Thepeopleintheseclubsgettogethereverymorning.First,theystretchtheirhandsabovetheirheads.Then,theypretendtolaugh.Sooneveryoneislaughingnaturally.Peoplesaythattheyfeelgoodafterlaughingtogether.科学家相信笑对你有好处,为什么呢首先,笑是好的运动,当你笑的时候,你锻炼了你身体上的好多肌肉,科学家说那个100个笑相当于跑步10分钟,当你笑的时候,你也深深地呼吸,这帮助你放松,那也对你有好处。Scientistsbelievethatlaughterisgoodforyou,whyForonething,laughterisgoodexercise.Whenyoulaugh,youexercisemu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