中考复习Part-3-科普文专题特训课件资料.pptx
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1、Part 3科普文专题特训 英语 返回一一Theideathatredmeansstopandgreenmeansgohasinfluencedourlivesinmorewaysthanjusttrafficsignals.Wehavebeentaughtfromayoungagethatthecolorredmeansdangerandgreenmeansitsokaytomoveforward.Butwhywerethosecolorschosenfortrafficlightsinthefirstplace?Forsomethingwehavetolookateveryday,whyc
2、ouldnttheyhavebeenprettiercolors?Well,itsimportanttoknowthatbeforetrafficlightsforcars,thereweretrafficsignalsfortrains.Atfirst,railwaycompaniesusedredtomeanstop,whitetomeango,andgreentomeanwarn.Asyoucouldimagine,trainsranintoafewproblemswithwhitemeaninggo.Forexample,onetrainmistookabrightstarforawh
3、itelightandsomethingunexpectedhappened.Becauseofthat,railwaycompaniesfinallymovedgreenmeaninggoandusedyellowtomeanwarn.Anditsbeenthatwayeversince.Redhasalwaysbeenacolorthatmeantdanger,longbeforecarswereevenaround.Thismostlikelystartedbecauseitsthecolorwiththelongestwavelengthsoitcanbeseensomewherefa
4、rtherthanothercolors.Butbelieveitornot,yellowwasonceusedtomeanstop.Backinthe1900s,somestopsignswereyellowbecauseitwashardtoseearedsigninapoorlylitarea.Finally,highlyreflectivematerials(高反射材料高反射材料)weredevelopedandredstopsignswereborn.Sinceyellowcanbeseenwellatalltimesoftheday,schoolzones,sometraffics
5、igns,andschoolbusescontinuetobeprintedyellow.Sonexttimewhenyouareimpatientlywaitingatatrafficlight,dontgetsomadatthem;theyvecertainlycomealongway.英语 返回()1.Whatweretrafficsignalsforbeforetrafficlightsforcars?A.Trains.B.Boats.C.Planes.D.Bicycles.()2.Whichofthefollowingcolorsmeantgoatfirst?A.Red.B.Yell
6、ow.C.White.D.Green.()3.Theunderlinedword“wavelength”meansinChinese.A.波浪波浪 B.波峰波峰C.波长波长 D.波谷波谷ACC 英语 返回()4.Whyareschoolbusespaintedyellow?A.Becauseyellowisaprettiercolor.B.Becauseyellowoncemeantdanger.C.Becauseyellowcanbeseenwellatalltimesoftheday.D.BecauseyellowmeansitsOKtogoforward.()5.Thetextmainl
7、ytellsus.A.howimportanttrafficlightsareB.whichcolorhasthelongestwavelengthC.whatred,yellowandgreencanbeusedforD.whytrafficlightsarered,yellowandgreenCD 英语 返回二二SearchingforparkingspaceshaslongbeenaheadacheformanyofficeworkersinmanybigcitiesinChina,especiallyforthoseworkingincentralbusinessdistricts.P
8、arkingneartheircompaniesforfivedaysaweekcouldcostthemalotofmoney.Atthesametime,evenwithpricesforparkinglotsinresidentialareas(居民区居民区)rising,mostoftheirspacesremainidleduringworkdays.NowanewformofsharingeconomyhasappearedinChinathesharedparkingspace.Ithasbecomeahugemarketinsomebigcities.InQingdao,aco
9、astal(海岸的海岸的)cityinShandong,upto10,000personalparkingspaceshavebeenturnedintosharedoneswiththehelpof“Airparking”,anonlinesharedparkingplatformdevelopedbyanetworkcompanyfromGuangzhou.Throughaspecialapp,userscaneithershareororderaparkingplace.Ownerswhohaveidleparkingspacescansharesomeinformation,inclu
10、dingtheparkingposition,licensenumberandtimelimit(限制限制)ontheplatform.Withtheinformation,userscaneasilyfindthenearestplacetopark.Theaverageparkingcostforsharedparkingis4yuaneachhour,almostthesameastheservicecostintraditionalparkingspaces.QingdaoisoneoftheChinesecitiesthatencouragesharedparking.Someoth
11、erbigcities,includingBeijing,ShanghaiandHefei,havealsobeguntotrythisidea.TheShanghaigovernment,forexample,hassetupmorethan6,500sharedparkingspacestoencouragethepublictouse.Sharedparkingwillbemoreandmorehelpfultothedrivers.英语 返回()6.Inthefirstparagraph,thewriterpointsoutthat.A.weshouldfindagoodwaytous
12、eparkingspacesinbigcitiesB.pricesofparkingspacesarerisingquicklyinChinaC.itsdifficulttofindparkingspacesincentralbusinessdistrictsD.manypeoplewanttofindparkingspacesinresidentialareasduringworkdaysC 英语 返回()7.Theunderlinedword“idle”probablymeansinChineseinthispassage.A.无所事事的无所事事的B.停顿的停顿的C.闲置的闲置的 D.懒惰
13、的懒惰的C 英语 返回()8.IfyouwanttousesharedparkinginQingdao,youshould.A.lovethecityB.useaspecialappC.haveanidleparkingspaceD.shareyourpersonalinformation()9.Howmuchshouldyoupayifyouuseasharedparkingspacefor5hoursinQingdao?A.15yuan.B.20yuan.C.25yuan.D.30yuan.BB 英语 返回()10.Thepurposeofthepassageistotellusthat.
14、A.itshardtofindparkingspacesinresidentialareasduringworkdaysB.QingdaohasfewersharedparkingspacesthanShanghaiC.sharedparkingwillprobablybecomemoreandmorepopularD.sharedparkingismoreexpensivethantraditionalparkingserviceC 英语 返回三三Areyousometimesalittletiredandsleepyintheearlyafternoon?Manypeoplefeelthi
15、swayafterlunch.Theymaythinkthateatinglunchisthecauseofthesleepiness.Or,insummer,theymaythinkitistheheat.However,therealreasonliesinsidetheirbodies.Atthattimeabouteighthoursafteryouwakeupyourbodytemperaturegoesdown.Thisiswhatmakesyouslowdownandfeelsleepy.Scientistshavetestedsleephabitsinexperimentswh
16、eretherewasnonightorday.Thepeopleintheseexperimentsalmostalwaysfollowedasimilarsleepingpattern.Theysleptforonelongperiodandthenforoneshortperiodabouteighthourslater.Inmanypartsoftheworld,peopletakenapsinthemiddleoftheday.Thisisespeciallytrueinwarmerclimates,wheretheheatmakesworkdifficultintheearlyaf
17、ternoon.Researchersarenowsayingthatnapsaregoodforeveryoneinanyclimate.Adailynapgivesoneamorerestedbodyandmindandthereforeisgoodforhealthingeneral.Incountrieswherenapsaretraditional,peopleoftensuffer(遭受遭受)lessfromproblemssuchasheartdisease.Manyworkingpeople,unfortunately,havenotimetotakenaps.Thoughdo
18、ctorsmayadvisetakingnaps,employersdonotallowit!Ifyoudohavethechance,however,hereareafewtipsaboutmakingthemostofyournap.Rememberthatthebesttimetotakeanapisabouteighthoursafteryougetup.Ashortsleeptoolateinthedaymayonlymakeyoufeelmoretiredandsleepyafterward.Thiscanalsohappenifyousleepfortoolong.Ifyoudo
19、nothaveenoughtime,tryashortnapeventenminutesofsleepcanbehelpful.英语 返回()11.Whydoyousometimesfeelsleepyintheearlyafternoon?A.Becauseitsveryhotinsummer.B.Becauseyoueattoomuchforlunch.C.Becauseyoudidnthaveagoodsleeplastnight.D.Becauseyourbodytemperaturegoesdownatthattime.D 英语 返回()12.Whatadvicedoesthewri
20、tergiveontakinganap?A.Ifyourtimeislimited,ashortnapcanalsohelp.B.Onlypeopleinwarmerclimateneedtotakeanap.C.Youdbettertakeanapaboutanhourafteryouhavelunch.D.Youcansleepaslongasyoulikesothatyouwontfeeltiredorsleepy.A 英语 返回 ()13.Whatcanwelearnabout“naps”accordingtothethirdparagraph?A.Doctorsneedtotaken
21、apswhileemployersdont.B.Takingnapsishelpfulforpeopleshealthinspringandsummer.C.Ifyoutakenapseveryday,youllhavelessriskofheartdisease.D.Allthepeopleinwarmerclimatestakenapsinthemiddleoftheday.C 英语 返回 ()14.Wecaninfer(推断推断)fromthepassagethat.A.youwillfeellesssleepyifyousleepforalongtimeB.takinganapwhen
22、everyouwantwilldogoodtoyourhealthC.ifyougetupat6:30a.m.,youdbettertakeanapatabout2:30p.m.D.sleepforeighthours,andyoullfeelsleepyashortperiodlaterC 英语 返回()15.Whatwouldbethebesttitleforthetext?A.JustForaRestB.AllForaNapC.ASpecialSleepPatternD.TakingNapsinWarmerClimatesB 英语 返回四四Inrecenthistory,therehav
23、ebeensomeamazinginventionswhichhavechangedourlives.Theplanehasmadeinternationaltravelfasterandeasier.TheInternethasbroughtpeoplecloser.AndyoumustknowthenamesofsomefamousinventorslikeHenryFordandSteveJobs.Buttherearemanyeverydayobjectswhichyouprobablydontnoticeandyoudontknowwhoinventedthem.Takeforexa
24、mpleNilsBohlin,whoinventedthemodern-daycarseatbelt(安全带安全带).Before1959,onlytwo-pointseatbeltswereavailable,andtheonlypeoplewhooftenworethemwereracecardrivers.Thetwo-pointseatbeltcouldntprotectpassengersfrominternalinjuries(内伤内伤)duringseriouscaraccidents.In1958,BohlinjoinedVolvoCarCorporationasasafety
25、engineer.Hecameupwiththethree-pointseatbelttokeeppassengersfromflyingoutoftheircarsduringcollisions.Thethree-pointseatbeltusedonestrap(带子带子)acrossthechest(胸部胸部)andanotheracrossthelegsandthenthetwojoinedatthesameplace.Amazingly,thiswasaverysimpleideawhichnoonetriedbefore.Thethree-pointseatbeltwasintr
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