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如图，在2×2的正方形网格中，有一个以格点为顶点的△ABC，请在网格中画出与△ABC成轴对称且也以格点为顶点的三角形（要求三个图形互不相同）．
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在正方形网格中我们把每个小正方形的顶点叫做格点连接任意两个格点的线段叫网格线段以网格线段为边组成的图
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如图在的正方形网格中每个小正方形的顶点称为格点左上角阴影部分是一个以格点为顶点的正方形简称格点正方形
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在正方形网格中我们把每个小正方形的顶点叫做格点连接任意两个格点的线段叫网格线段以网格线段为边组成的图
如图正方形网格中的每个小正方形的边长都是1每个小格的顶点叫做格点.1在图1中以格点为顶点画一个面积为
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TimBerners﹣Leeisnotthemostfamousinventorintheworld.Howeverhisinventionhaschangedourlives. HewasborninLondonEnglandin1955.WhenhewasasmallboyTimwasinterestedinplayingwithelectricalthings.HestudiedscienceatOxfordUniversity.Hemadehisfirstcomputerfromanoldtelevisionattheageof21. Timstartedworkingonearlycomputers.Atthattimetheyweremuchbiggerthannow.HeworkedinEnglandthenSwitzerland.Timwasreallyinterestedintwothingscomputersandhowthebrainworks.Howcouldthebrainconnectsomanyfactssoquickly?Hehadtoworkwithpeopleallovertheworld.Theysharedinformationaboutcomputers.Itwashardtomanagealltheinformation.Heansweredthesamequestionsagainandagain.Ittookalotoftime.ItwasevendifficultforcomputersinthesameofficeinSwitzerlandtoshareinformation.Timalsoforgotthingseasily.Couldacomputerworklikeabrain?Couldittalktoothercomputers? TherewasanInternetalreadybutitwasdifficulttouse.In1989TimBerners﹣LeeinventedtheWorldWideWebWWWallbyhimself.ThishadaspeciallanguagethathelpedcomputerstalktoeachotherontheInternet.WhenpeoplewantedtoshareinformationwithotherstheyusedtheWorldWideWeb.TheInternetgrewquicklyafterthat. TimBerners﹣Leedoesn'tthinkhedidanythingspecial.HesaysthatalloftheideasabouttheInternetwerealreadythere.Allhedidwastoputthemtogether.HesaysthatmanyotherpeopleworkedtogethertomaketheInternetwhatitistoday. Mostinventorswanttobecomerich.ButTimgaveawaytheWorldWideWebfornothing.HenowworksinAmerica.HehelpspeoplesharetechnologyandwantstheInternettobefreeforeveryonetouse.Maybeheisthemostimportantbutleastfamousinventorintheworldtoday! 1.WhatwasTimBerners﹣Leeinterestedin? A.Lookingforjobsindifferentcities. B.Talkingtopeoplearoundtheworld. C.Studyinghowtoconnectcomputers. D.Exploringhowtoimprovememory. 2.TheunderlinedwordItinParagraph3refersto. A.Workingonearlycomputers B.Connectingdifferentfactstogether C.TravellingtotheofficeinSwitzerland D.Repeatingtheanswerstothesamequestions 3.WhyisTimBerners﹣Leeoneofthemostimportantmenintheworld? A.HemadeinformationsharingontheInternetpossible. B.Hemadethefirstcomputerwhenhewas21yearsold. C.Hehelpedpeopleunderstandbetterhowthebrainworks. D.HeinventedtheInternetandmadeitfreeforeveryonetouse. 4.Inwhatorderdidthefollowingeventstakeplace? a.TimworkedinEngland.b.TimworkedinSwitzerland. c.Timmadehisfirstcomputer.d.TiminventedtheWorldWideWeb. e.TimstudiedscienceatOxfordUniversity. A.c﹣e﹣d﹣a﹣b B.e﹣b﹣a﹣c﹣d C.c﹣d﹣a﹣e﹣b D.e﹣c﹣a﹣b﹣d 5.WhatdoesthewriterthinkofTimBerners﹣Lee? A.Heisnotfamousbecauseheisnotrich. B.Hehaschangedourlivesandheisgreat. C.Hedidnothingspecialbutmakepeopleagoodlife. D.Hehasmadegreatachievementsinmemoryresearch.
FromzerotoskatingheroFouryearsagoChineseskaterWuDajing23introducedhimselftotheskatingworldbywinningasilvermedalattheSochiOlympicWinterGames.Atthisyear'sPyeongChangOlympicsWunotonlyreturnedbutalsomadehistory.OnFeb22Wuwonthegoldmedalinthemen'sshort﹣track500﹣meterrace.Hesetanewworldrecordwithatimeof39.584seconds.HealsobecamethefirstChinesemantotakehomeanOlympicshort﹣trackgoldmedal.ReuterssaidWu'swinwasflawlesswhenhewasmuchfasterthanalloftheotherskaters.Ididn'tgivethemachanceandIkeptmyspeedfromthestarthetoldthemedia媒体afterthematch.ButChina'sshort﹣trackteamsdidn'tdowellingeneralattheGames.Chineseskatersinthewomen's500meters3000﹣meterrelayandmen's1500metersallfailedtotakehomethegold.WuwasChina'sbiggesthopewhichputalotofpressureonhim.Butheprovedhimselfwithhisgreatperformance.Wuisnowknownasahighlytalentedskater.Butthingswerenotalwaysthatway.WhenWujoinedthenationalteamin2010hewasseenasalmostnothingcomparedtogiftedskaterslikeZhouYangandFanKexinashiscoachessaidatthetime.Theircommentsmadehimquiteupset.ButasthesayinggoesWinnersneverquitandquittersneverwin.Wudidn'twanttogiveupandworkedashardashecould.Hepracticedskatingallyear﹣round.Heevendidn'treturntohishometownfortheholidaysfor10years.IbelieveinmyselfhetoldthemediaafterhismatchattheOlympics. 1.WheredidWuDajingwinthegoldmedalinthemen'sshort﹣track500﹣meterrace? A.AttheSochiOlympicWintergames. B.AtthePyeongChangOlympicsWintergames. C.AttheBeijingOlympicgames. D.AttheNewYorkOlympicWinterGames. 2.WhatisthemeaningoftheunderlinedwordflawlessinChinese? A.当之无愧的 B.让人折服的 C.飞速的 D.完美无瑕的 3.WhichofthefollowingisNOTTRUEaboutChina'sshorttrackteamsatthisyear'sPyeongChangOlympicsgames? A.Wusetanewworldwithatimeof39.584seconds. B.WubecamethefirstChinesemantotakeanOlympicshort﹣trackgoldmedal. C.Chineseskaterinthewomen's3000﹣meterrelaysucceededintakingthegold. D.Chineseskaterinmen's1500metersdidn'twinthegold. 4.Whatcanweknowfromthepassage? A.Wujoinedthenationalteamin2013. B.Wudidn'tgobackhomefortheholidaysfor10years. C.Hiscoachesalwaysthinksheisahighlytalentedskater. D.Wudidn'tworkedashardashecould.
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