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如图，在x轴的正半轴上依次截取OA1=A1A2=A2A3=A3A4=A4A5，过点A1、A2、A3、A4、A5分别作x轴的垂线与反比例函数y=（x≠0）的图象相交于点P1、P2、P3、P4、P5，得...
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如图1在平面直角坐标系中将n个边长为1的正方形并排组成矩形OABC相邻两边OA和OC分别落在x轴和y
已知直线lkx－y＋1－2k＝0k∈R.1证明直线l过定点2若直线l交x轴正半轴于点A.交y轴正半轴
已知在平面直角坐标系中点A.B.分别在x轴正半轴上且线段OAOBOA＜OB的长分别等于方程x2﹣5x
如图在直角坐标系中△ABC满足∠C.＝90°AC＝4BC＝2点A.C.分别在xy轴上当A.点从原点开
如图2-81所示矩形A.′BC′O.′是矩形OABC边OA在x轴正半轴上边OC在y轴正半轴上绕点B.
如图四边形OABC是矩形ADEF是正方形点A.D在x轴的正半轴上点C在y轴的正半轴上点F在AB上点B
如图在平面直角坐标系中正方形ABCD的顶点A.在y轴正半轴上顶点B.在x轴正半轴上OAOB的长分别是
如图矩形A.′BC′O′是矩形OABC边OA在x轴正半轴上边OC在y轴正半轴上绕B.点逆时针旋转得到
如图在平面直角坐标系中正方形ABCD的顶点A.在y轴正半轴上顶点B.在x轴正半轴上OAOB的长分别是
如图已知直角梯形OABC的边OA在y轴的正半轴上OC在x轴的正半轴上OA＝AB＝2OC＝3过点B.作
如图在平面直角坐标系中矩形OABC的边OA在y轴的正半轴上OC在x轴的正半轴上OA=1OC=2点D.
已知如图A.在x轴负半轴上B.0-4点E.-64在射线BA上1求证点A.为BE的中点.2在y轴正半轴
正方形OA1B1C1A1A2B2C2A2A3B3C3按如图放置其中点A1A2A3在x轴的正半轴上点B
如图四边形OABC是矩形ADEF是正方形点A.D.在x轴的正半轴上点C.在y轴的正半轴上点F.在AB
如图在平面直角坐标系中在x轴y轴的正半轴上分别截取O
OB，使OA=OB；再分别以点A.
为圆心，以大于
AB长为半径作弧，两弧交于点
若点C.的坐标为（m﹣1，2n），则m与n的关系为( )
A.m+2n=1B.m﹣2n=1C.2n﹣m=1
n﹣2m=1
已知在平面直角坐标系中点A.B.分别在x轴正半轴上且线段OAOBOA＜OB的长分别等于方程2-5+4
如图在平面直角坐标系中点AB分别在x轴y轴的正半轴上OA=4AB=5.点D在反比例函数y=k＞0的图
如图1在平面直角坐标系xoy中M.是x轴正半轴上一点⊙M.与x轴的正半轴交于A.B.两点A.在B.的
如图在直角坐标系中△ABC满足∠C.=90°AC=2BC=1点A.C.分别在x轴y轴上当A.点从原点
如图在直角坐标系中从原点O开始沿x轴正半轴取线段OA=1依次截取AB=2BC=4CD=8截取的每条线
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KarenJerrywheredidyougolastSunday? Jerry1 KarenHowdoyoulikeit? Jerry2Ithasthebestscreen.HaveyoueverbeenthereKaren? Karen3DidyouwatchthemovieTheAdventure4lastSunday? JerryNoIdidn't.4 KarenWonderful!Youcan'tmissit. JerryCouldyougowithme? KarenSorryI'vewatcheditthreetimesinWandaCinema.5hehasn'twatchediteither. JerrySoundslikeagoodidea.
AHelloTom.Youlookupset.1? BIcan'tdecidewhetherIshouldtakepartinourschoolartfestival. A2? BForthecelebrationofNationalDay. AOhIsee.Whenwillthefestivalbegin? BIt'llbeginonSeptember25th. AIknowyou'regoodatsinging.3? BGreatidea!But4? AHowaboutIloveyouChina? BIt'stoodifficult.I'mafraidIcan'tsingitwell. A5.Youhavealongtimetopracticeitwell. BIagreewithyou.
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IfyouwanttobecomeafluentEnglishspeakeryoushouldtakesomeadviceTherearefourskillsinlearningEnglish.Theyarereadinglisteningspeakingandwriting.Themostimportantthingyoumustrememberisthatifyouwanttoimproveyourspeakingandwritingskillsyoushouldfirstmastertheskillsofreadingandlistening. Readasmuchasyoucan.Butyourreadingmustbeactive.Itmeansthatyoumustthinkaboutthemeaningofthesentencethemeaningoftheunfamiliarwordsetc.Thereisnoneedforyoutopaymuchattentiontogrammarsortrytounderstandalltheunfamiliarwordsyoucomeacrossbutthefactthatyouseethemforthefirsttimeandrecognizethemwheneveryouseethemforexampleinotherpassagesorbooksisenough.Itwouldbebettertoprepareyourselfanotebooksoyoucanwritedowntheimportantwordsorsentencesinit. Asforlisteningtherearetwochoicesbesidesreadingyoucanlisteneverydayforabout30minutes.Youcanonlypayattentiontoyourreadingandbecomeskillfulatyourreadingthenyoucancatchuponyourlistening.Sinceyouhavelotsofinputsinyourmindyoucaneasilyguesswhatthespeakerisgoingtosay.Thisnevermeansthatyoushouldnotpracticelistening. Forlisteningyoucanlistentocartoonsorsomemoviesthatarespeciallymadeforchildren.Theirlanguagesareeasy.OrifyouaregoodatlisteningyoucanlistentoVOAorBBCprogramseveryday.Againthethingtorememberisbeingactiveinlisteningandpreferablytakingsomenotes. Ifyoufollowthesepiecesofadviceyourspeakingandwritingwillimproveautomaticallyandyoucanbesurethatwithalittleefforttheywillbecomeperfect. 1Accordingtotheauthorwhichshouldyouimprovefirstamongthefourskills? A.Readingandlistening. B.Readingandwriting. C.Writingandspeaking. D.Speakingandlistening. 2Theunderlinedphrasecomeacrossinthesecondparagraphcanprobablybereplacedby. A.meetbyaccident B.discover C.findonpurpose D.lookfor 3Theauthorseemstoagreewiththeviewthat. A.everyoneshouldlistentoVOAorBBCprogramseveryday B.youneedn'tpracticelisteningifyoukeeponreadingeveryday C.beinggoodatreadingishelpfulinimprovingyourlistening D.youshouldtakenotesofwhateveryouarehearing 4Thepassageismainlyabouthowto. A.choosesuitablelisteningmaterials B.dealwithnewwordsinreading C.improveyourEnglishasquicklyaspossible D.becomefluentinspeakingandwritingEnglish
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最近某英文报刊正在举办征文活动主题是弘扬中华传统文化畅谈中国传统佳节.请你以MyFavoriteChineseFestival为题写一篇英语作文为本次活动投稿. 1.内容提示1简单介绍你最喜欢的传统节日名称及时间等 2讲述该节日有哪些主要庆祝方式食物及活动等 3说说你对这个节日的感受及喜爱它的原因. 2.写作要求1内容包含以上要点 2语言表达准确语意通顺连贯词数60～80词 3书写工整规范文中不得出现真实姓名校名和地名. MyFavoriteChineseFestival
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ItisoftensaidthatWesternEuropeansspeakEnglish.FromtravellingallthroughEuropeIknowthatthisisnotentirelytrue.SomeregionsofEuropehavea90%ofEnglishspeakingratewhileinotherpartsEnglishisgenerallyatonguewhichisimpossibletounderstand.ThedivideitseemslieswiththeRomancelanguages. InScandinaviaGermanyBelgiumtheNetherlandsandtherestoftheWesternEuropeannonRomancelanguagespeakingregionsEnglishseemstobeunderstoodandspokenjustlikethepeople'sfirsttongue.InIcelandIhaveneverexperiencedEnglishspokensowellandsowidelybyanonnativespeakingcountry.AndIhavealmostnevermetaDutchpersonwhodidnotspeakEnglishalmostaswellasmycountrymen. ButwhenyoumovetosouthofWesternEuropealittlesomethinghappens.Englishbecomesalessusefullanguagefortravel.YoujustcrossovertheRomancelanguagebarrierandintoSpainPortugalFranceandItalywhereEnglishisspokenataratethatdoesnotseemtobemuchhigherthaninChinaLatinAmericaorSoutheastAsia. TravellingthroughEuropeandworkingathotelsaroundtheworldthatarepopularwithEuropeanshavegivenmeadeeperviewoftheirusageofforeignlanguages.ThenorthernEuropeanscanoftenspeakfiveorsixlanguageswhiletheRomancespeakershardlyknowmorethantheirbirthtongue.AndifyouthinkthatSpanishandItalianaresosimilarthattheycanbeunderstoodbyeachotherItellyouthatthisiscompletelywrong.SpaniardsandItaliansdon'tevenunderstandeachother.ItisalsonotafactthatpeoplefrombothofthesecountriescancommunicateinFrenchonlythosewhoputahighamountofeffortintolearningEnglishorhavelivedabroadforyearscanspeakEnglishwell. PeopleoftensaythatFrenchpeoplereallyunderstandEnglishbutrefusetospeakitbutfromwatchinghundredsofFrenchtravellersovertheyearsstrugglewithEnglishabroadaswellasfriendsinFrancetryinginvain徒劳tocommunicatewithmeIknowthatthisisnottrue.Englishissimplynotwidelyspokenthereoutsideofthelargecities. 1AccordingtothepassagewhichstatementdoyouthinkisTRUE? A.InIcelandEnglishisnotspokenverywell. B.DutchpersonscanalmostspeakEnglishaswellastheauthorhimself. C.SpanishandItalianaresosimilarthattheycanbeunderstoodeasilybyeachother. D.EnglishisaswidelyspokenasFrenchinFrance. 2Theauthorisprobablyan. A.Frenchman B.Dutchman C.American D.Chinese 3Whatdoesthisinthelastparagraphmean? A.WesternEuropeansspeakEnglish. B.FrenchpeoplereallyunderstandEnglishbutrefusetospeakit. C.HundredsofFrenchtravellersstrugglewithEnglishabroad. D.FriendsinFrancetryinvaintocommunicatewithmeinEnglish. 4Whereisthepassagemostprobablytakenfrom? A.Atraveljournal. B.Afashionmagazine. C.Ageographytextbook. D.Anewsreport.
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Passage3 TheBritishgovernmenthasstarteda￡10millionMandarinExcellence普通话优秀Program.Theprogramwillhavehelpedover5000Britishstudentstobefluent流利的inMandarinChineseby2020. Theprogramisledbylocalschoolsandsupported支持byUniversityCollegeLondon.Sofar14schoolshavetakenpartintheprogram.HundredsofsecondaryschoolstudentsinEnglandhavetakenlessonsinMandarinChinese.OverthenextthreeyearstheywillspendeighthoursstudyingMandarinChineseeveryweek. NedMillerisanofficeroftheBritishgovernment.HesaidahighleveloffluencyinMandarinChinesewouldbecomemoreandmoreimportant.Languageskillsareimportantforjobsandlife.MandarinChineseisspokenbythelargestnumberofpeopleintheworld.Itisalsooneofthelanguagesthatmattersthemosttoourcountry'sfuture.IftheUnitedKingdomwantstoremaincompetitiveintheworldwedoneedfarmoreofouryoungpeopleleavingschoolwithagoodcommandofMandarinChineseMilleradded.Wehopethatouryoungpeoplecouldbegiventhechancetostudythelanguage.WewantthemtobefluentinbothspokenandwrittenMandarin.TheMandarinExcellenceProgramwillhelpusdothis.Itwillnotonlyopenthestudents'eyesbutalsogivethemagreatadvantagewhentheyentertheworldofwork. Britishkidsinfactarenotalone.InAmericaabout200000studentsarestudyingMandarinChinese.Itisbelievedthat800000morewilljointhemoverthenextcoupleofyears. 1BritishstudentswillhavebeenfluentinMandarinChinesethroughtheprogramby2020. A.200000 B.Lessthan5000 C.About800000 D.Over5000 2Theprogramisledby. A.UniversityCollegeLondon B.localschools C.aBritishofficer D.theAmericangovernment 3What'stheChinesemeaningoftheunderlinedwordcommandinParagraph3? A.掌握 B.命令 C.要求 D.希望 4NedMillerhopedyoungpeoplecouldbegiventhechancetostudyChinese. A.Chinese B.American C.British D.French 5Whatdoesthewriterwanttotellus? A.TheprogramhasnousehelpingstudentslearnChinesewell. B.FeweryoungpeopleabroadliketolearnChinese. C.MandarinChinesehelpstheUKimproveitsrelationshipwithChina. D.MandarinChineseisbecomingmoreandmoreimportant.
YangYu14ofJilinhasn'tadapted适应himselftothechangesinhisclassroomsincethefirstdayofthistermteachersnowholdclasseswithacomputerandscreen.InsteadofwritingontheblackboardasbeforetheyclickthemouseandshowusthePowerPointPPTslides幻灯片onthescreen.SometimesthereisnotevenonewordontheblackboardafterawholeclassYangsaid.I'mnotquiteusedtothemultimedia多媒体class. MoreandmoremiddleschoolsinChinanowusemultimediainclass.TeachersputtheircoursesonacomputerandshowtheirlessonswithaPPT.Tomakethelessonsmoreinterestingtheyplayanimations动画andmovies. HuWeianEnglishteacherinSichuanthinksmultimediaclassseemstobemoreinterestingthantraditionalclasses.HisstudentspracticetheiroralEnglishbyfollowingmusicandanimationsonacomputer.IthelpsthemspeakEnglishbravelyandactivelyHusays.Besidesit'salsoahelpfultoolforteachersbecauseshowingPPTssavesusmoretimethanwritingnotesontheblackboard. HowevermultimediaclassmakesthingsmoredifficultforstudentslikeLiuYifanga15﹣year﹣oldBeijinger.Shecan'ttakeallhernotesasbefore.TherearenowordsontheblackboardbutmanyonthescreenLiusays.BesidesmyteacherspeakssofastthatIcan'tcatchup. Liuthinksitisnotthebestwaytolearn.FormeIliketheoldway.IagreethatthemultimediaishelpfulbutsoistheblackboardLiusays.IfteacherscanusebothtoolsproperlyinclassIthinkthatwillbereallygoodforeveryone. 1Whatequipment设备doYangYu'steachersuseinmultimediaclass? 2AccordingtoParagraph2whatcanteachersdotomaketheirlessonsmoreinteresting? 3HowdoteacherssavestudentsmoretimeinclassaccordingtoHuWei? 4HowmanyreasonsdoesLiuYifangmentionwhyshecan'ttakeallhernotesasbefore? 5What'sLiuYifang'sadviceonclassteaching?
Passage1 1Whatwilltheweatherbelikeinthreedays? A.Mostlycloudy. B.Partlysunny. C.Sunnyandwindy. D.Cloudyandrainy. 2WhatwasthehightemperatureonJun.292018? A.21℃. B.13℃. C.15℃. D.26℃. 3Whichofthefollowingdayshasthelowesttemperature? A.JUN29. B.JUN30. C.JUL1. D.JUL2. 4Whendidthesunrisetoday? A.At606am. B.At903pm. C.At901am. D.At757pm. 5IfyouwanttoknowabouttheweatherofnextFridayyoucanclick. A.MoreHistoricalWeatherData B.Astronomy C.Next5 D.More
believeitornotplayavitalpartinhaveagoodcommandofsuchasthesameasberecognizedasbeyondrecognitioncomeupbedifferentfrommakeuseof 1YoucanEnglishonlyifyouknowwellthebackgroundtoEnglishlanguage. 2MusichasbeenthedailylifeofmostAmericansallthetime. 3Returningtohishometownafterafifteenyearabsencehesawthatallwaschanged. 4manygreatpeopleareafraidofspeakinginpublicaswellwhichdoesn'tpreventthemfrombeingfamousfigures. 5ProfessorSmithoneofthegreatscholarsinEnglishphilology. 6BritishEnglishAmericanEnglish.Doyouknowsomeofthedifferencesbetweenthem? 7Theskywasdarkblueandclearwhenthemoon. 8It'smoreusefultolearnmodernlanguagesEnglishandGermanthanLatin. 9Onthetrainhehistimeandstartedtoreadhisfavouritebook. 10Rickhasn'tchanged.Helooksexactlyhedidatschool.
FourBenefitsofWritingbyHand TodayisNationalHandwritingDay!Althoughwedon'twritelikeweusedtoherearefourwayshandwritingisstillhelpful. It'sbetterforlearning. 1That'sbecauseputtinginktopaperstimulates刺激thebrain.Onestudyfrom2010foundthatthebrainareasrelatedtolearninglitupmuchmorewhenkidswereaskedtowritewordslikespaceshipbyhandversusjuststudyingthewordclosely. 2 Manyfamousauthorspreferwritingbyhandtotheuseofatypewriterorcomputer.WriterSusanSontagoncesaidthatshepennedherfirstdrafts草稿beforetypingthemupforeditinglater.Shesaid3A2009studyseemstosupportSontag'spreferenceforwritingbyhandElementaryschoolstudentswhowroteessayswithapennotonlywrotemorethantheirkeyboardtappingfriendsbuttheyalsowrotefasterandinmorecompletesentences. Itwillpreventyoufrombeingdistracted分心. Thecomputerinfrontofyouisreallyadistraction.4In2012scientistsevensuggestedthattakingfiveminutebreakstobrowseTumblrorBuzzFeedcouldmakeyouamoreproductiveworker.Howeverwhenit'stimetoworkonthatessayhaveonlyapenandpaperinfrontofyou. Itkeepsyourbrainsharpasyougetolder. 5AccordingtoTheWallStreetJournalsomephysicianssaythattheactofwritingisgoodexerciseforthosewhowanttokeeptheirmindssharpastheyage. A.Itmakesyouabetterwriter. B.Writingisgoodforyourbrain. C.OfcoursetheInternetisn'tallbad. D.Iliketheslownessofwritingbyhand. E.Trywritingbyhandatleast20minuteseachday. F.Manywritershaveapreferenceforwritingbyhand. G.Oneofthemosteffectivewaystostudyistorewriteyournotesbyhand.
isthebestseasoninayearbecausemanyplantsbegintogrow.
AntibioticGream消炎药膏 usescreamtotreatpainandinfection感染fromsmallburnonskin. 1Wherecanweusethecreamonourbodies? A.Ineyes. B.Onskin. C.Onteeth. D.Onhair. 2Weshouldvisitifwehaveseriousburns. A.adentist B.areporter C.adoctor D.anurse 3Howmanytimesadaydoweputthecreamontheburnatleast? A.Two. B.Three. C.Four. D.Five. 4WhichofthefollowingstatementsabouttheAntibioticCreamistrue? A.Itisonlyusedonface. B.Itcanbeeatenasfood. C.Itisbestforpregnantwomen. D.Itmustbekeptatroomtemperature.
Ioftenargue争论withmymumwhenIgrowolder.Shetriesherbesttomakemylifeeasierandshedoes1thingsforme.AlthoughIknowmymumlovesmeIdon'tthinksheunderstandsme2.Shelikesmakingeverydecisioninsteadofme.SheevenchoosestheclothesIwear.Iamnotgivenachanceto3anything!Ithinkit'simportanttobeindependent独立的andmake4.Iwanttocontrolmylife5.Iampuzzled困惑的andhavenoideawhatIshoulddo.
Deardaughter YouareawonderfulpersonandyourmotherandIloveyou.Itwillnotbelongbeforeyouleaveschooltomakeyourwayintheworld.CanIgiveyousomefriendlyadvice?Herearesomethingsthatyoushouldneverdo. ★Nevergetupsetwithyourlook. Wethinkyoulookgreat.1Eatwelltakeexerciseandbehealthy.Somegirlsworrytoomuchaboutnotgettingtheperfectshape.Youlookfine. ★Neverputyourselfatseriousrisk. 2Andsometimesyouhavetoavoidthingsthatlookliketheymightbefunlikesmoking. ★3Youaregreatandabletoachievegreatthingssobelieveinyourself.Whenthingsgobadlyneverstopbelieving.Somegirlsgetupsetdoubtthemselvesandloseconfidence.Thenmanyproblemscanfollow. ★Nevergivelessthanyourbest. Weareveryproudofwhatyouhaveachieved.Youshouldbeproudtoo.4 ★Neverforgetthatyourparentsloveyou. Whateverhappensinlifeyourfamilywillstillbeyourfamily.5Wearehereforyouandwewilltrytohelp. Love Dad
Iranintoquiteafewlanguageproblemswhilevacationingwithmyfamilylastsummer.ThemostembarrassingwaswhenmyMomapologizedtothepeoplewewerestayingwithbecauseherpantsweredirty.Theylookedatherinamazement吃惊notknowinghowtoreact.YouseeMomhadfallenoverandgottenmudonherjeans.ButinBritainpantsmeansunderpantsorknickersnottrousersasitdoesbackhome. Katie﹣FromAmerica Iwenttostaywithafriendonthewestcoastlastsummer.Herflatwasonthefirstfloorofahigh﹣risebuildingsoIgottheliftup.ThenIwanderedroundforageslookingforherflatbutcouldn'tfindit.FedupandtiredIfinallyhadtogoouttofindaphonebox.Sheexplainedthatherflatwasonthefirstfloorwhichformemeantthegroundfloor. David﹣FromBritain WhenIaskedfortherestroominabigdepartmentstorepeoplekeptdirectingmetoaroomwithseatswhereIcouldsitandrest.IttookmeyearstogetthroughtosomeonethatIonlywantedthetoilet! Tom﹣FromAmerica Lastsummerwewentonatwo﹣weekfamilytouringholidaysoDadhiredacarovertheInternet.Thiswasanoldvehicle汽车andthereturnedouttobelotsofthingswrongwithit.Whenhephonedthehirecompanyandtriedtoexplainthatthelockonthebootwasbrokentheythoughthewastalkingaboutfootwear!Hehadnoideatheirwordforbootwastrunk.Intheendwewenttoagarageandjustsolvedtheproblem. Mary﹣FromBritain 1HearingKatie'smother'swordsKatie'sfriendswereinsurprisebecause. A.Katie'smothergotmudonherjeans B.Katie'smother'sunderpantsweredirty C.theydidn'tknowEnglish D.theymistookpantsinAmericanforunderpants 2Davidwentouttofindaphoneboxto. A.phonethepoliceforhelp B.phonehisfriendforhelp C.tellhisfriendhecouldn'tgotovisither D.apologizeforhisbeinglate 3WhenTomaskedfortherestroomthepeoplearoundhimthought. A.hewantedtogotoadepartmentstore B.hewantedthetoilet C.hewantedachair D.hewantedtohavearest 4Theunderlinedwordgarageisprobably. A.aplacetorepaircars B.acar C.agasstation D.aparkingplace
Flyingahotairballoonisfiullofchallenge.Doyouwanttoflyit?Ifsohereissomeadviceforyou. Understandingthebasics ★Takeatrainingcourseandgetalicense. ★Knowhowtheballooncanfly.Addpropane丙烷tothefiretomaketheballoonfly. Makesureyouhaveenoughenergyinthetank箱.Checkyourtankattimes. ★Learnhowtostayatarightheight.Raiseorlowertocontroldirectionsbythewind.IfyouwanttoloweryoucanpullaredropetoletthehotairoutofthetopoftheballooniMakingpreparations ★Youmusthavethenecessaryequipment设备suchasafiredistinguisher灭火器amapandsoon. ★Youshouldcheckthewindconditionstomakesureit'ssafetofly.Youmustknowwhentoflyorcanceltheflight. ★Youneedseveralfriendstohelpyoucontroltheballoon.Theycanhelpyoupulldownthebasketortietheballoontothegroundcaruntilyouarereadytofly. Flyingtheballoon ★Writedowntheheightandtheroute路线throughthewholeflight.Beforeyoulandpayattentiontothehighmountainstreestallbuildingsandsoon.Theymaybedangerous. ★Youarenevertoocareful.Keepcalmwhenyouhavetrouble.
OneChristmasCelinareceivedaspecialgift﹣ablueplasticpiece.Thereisgreenblueandfadedmica褪色的云母片init.Ithasthesame1asahandmirror.Itwassimilartoakindoffishwhichlooked2usefulnorbeautiful.Shethankedandforgotit. OnedayCelina3thediningroom.Whenshetookdowntheboxfromthebookcasethestrangegiftwasfound.Thistimeshenoticedahook钩atoneendandtherewereseveral4onthebottomoftheboxHangona5window. ThenCelinawenttothekitchenhungthisgiftonawindowwiththesunshinepouringinallday.To6surpriseamazingcolorfullightcameintothekitchen.Throughthelittlebluemicacolorsturned7greentodarkblueandthentopurple…justlikethefantasticseawaves.Shehad8thoughtsuchasmallstrangegiftcouldleadtoabeautifulseaworld.OnChristmasdayCelinadidn'tfindthatkindofbeauty.Butatthemomentsheunderstoodacommonthingwillbesobeautifulaslongasyoumakeuseofit9. Thegifthasbeenhungonthewindow.Everydayitremindsherthatsheshould10sometimefindingthebeautyhiddeninpeopleandgifts.it'sanimportantlessonforher.
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AB长为半径作弧，两弧交于点 若点C.的坐标为（m﹣1，2n），则m与n的关系为( ) 
A.m+2n=1B.m﹣2n=1C.2n﹣m=1 n﹣2m=1
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