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如图,矩形ABCD的顶点A和对称中心在反比例函数y=(k≠0,x>0)上,若矩形ABCD的面积为8,则k的值为( )
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如图在平面直角坐标系中反比例函数x>0的图象和矩形ABCD的第一象限AD平行于x轴且AB=2AD=4
如图已知矩形OABC的一个顶点B的坐标是42反比例函数y=x>0的图像经过矩形的对称中心E且与边BC
如图矩形OABC的顶点AC分别在xy轴的正半轴上点D为对角线OB的中点点E4n在边AB上反比例函数y
如图反比例函数y=x>0的图象过格点网格线的交点P.1求反比例函数的解析式2在图中用直尺和2B铅笔画
如图在平面直接坐标系中O为ABCD的对称中心AD=6AD∥x轴交y轴于点E点A的坐标为-22反比例
6
8
2
24
如图反比例函数y=x>0的图象和矩形ABCD在第一象限AD∥x轴且AB=2AD=4点A的坐标为26
如图已知矩形OABC的一个顶点B的坐标是42反比例函数y=x>0的图象经过矩形的对称中心E且与边B
如图已知矩形OABC的一个顶点B.的坐标是42反比例函数y=x>0的图象经过矩形的对称中心E.且与边
如图反比例函数y=k<0的图象与矩形ABCD的边相交于E.F.两点且BE=2AEE.﹣12.1求反比
如图反比例函数y=x>0的图像和矩形ABCD在第一象限AD∥x轴且AB=2AD=4点
的坐标为(2,6).若将矩形向下平移,使矩形的两个顶点恰好同时落在反比例函数的图像上,则k的值是 ( ) A.2
4
6
8
如图在平面直角坐标系中反比例函数的图象和矩形ABCD在第一象限AD平行于轴且AB=2AD=4点A.的
如图已知矩形OABC的一个顶点B.的坐标是42反比例函数y=x>0的图象经过矩形的对称中心E.且与边
如图矩形ABCD的顶点A和对称中心在反比例函数y=k≠0x>0上若矩形ABCD的面积为8则k的值为
8
3
2
4
如图矩形ABCD的顶点A.B.的坐标分别为-20和10BC=2.反比例函数y=x>0的图像经过点C.
对于反比例函数y=k≠0下列所给的四个结论中正确的是
若点(3,6)在其图象上,则(﹣3,6)也在其图象上
当k>0时,y随x的增大而减小
过图象上任一点P.作x轴、y轴的线,垂足分别A.B.,则矩形OAPB的面积为k
反比例函数的图象关于直线y=﹣x成轴对称
如图矩形ABCD的顶点A和对称中心均在反比例函数y=k≠0x>0上若矩形ABCD的面积为8则k的值
如图在平面直角坐标系中反比例函数y=x>0的图象和矩形ABCD在第一象限AD平行于x轴且AB=2AD
反比例函数y=﹣的图象的对称中心的坐标是.
如图已知矩形OABC的一个顶点B的坐标是42反比例函数y=x>0的图象经过矩形的对称中心E且与边BC
如图反比例函数y=k<0的图象与矩形ABCD的边相交于E.F.两点且BE=2AEE.﹣12.1求反比
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10分Therewasoncealonelygirlwhowantedloveverymuch.Onedaywhileshewaswalkinginthewoodsshefoundtwobirds.1Shetookcareofthemwithloveandthebirdsgrewstrong.Everymorningtheygreetedherwithabeautifulsong.Thegirlfeltgreatloveforthebirds.Shewantedtheirsingingtolastforever.2Thelargerandstrongerofthetwobirdsflewoutofthecage.Thegirlwatchedworriedlyasheflewaboveher.Shewassofrightenedthathewouldflyawayandshewouldneverseehim.Soasheflewcloseshecaughthimquickly.Shefeltveryhappy.3Herlovehadkilledhim.Shenoticedtheotherbirdstandingatthedoorofthecage.Shecouldfeelhisgreatneedforfreedomandhisneedtoflyintotheclearbluesky.4Thebirdflewaroundheroncetwicethreetimes.Thegirllookedhappilyatthebird'senjoyment.Herheartwasnolongerconcernedwithherloss损失.5Suddenlythebirdflewcloserandlandedsoftlyonherhand.Itsangthesweetestsongshehadeverheard. Thefastestwaytoloseloveistoholdontootightthebestwaytokeeploveistogiveitwings! A.Onedaythegirlleftthedoortothecageopen. B.Sheliftedhimfromthecageandfreedhim. C.Shetookthemhomeandputtheminasmallcage. D.Thebirdsweresobeautifulthatshelovedthemverymuch. AB.Shewantedthebirdtobehappy. AC.Sherealizedhermistake. AD.Howeverwhensheopenedherhandshefoundthebirdhaddied.
为了缓解上学时校门口的交通压力某校随机抽取了部分学生进行了调查来了解学生的到校方式并根据调查结果绘制了如下统计图表 某校学生到校方式抽样调查统计表 到校方式 学生人数 乘车 90 骑车 m 步行 20 其他 50 根据统计图所提供的信息解答下列问题 1本次抽样调查中的样本容量是m= 2扇形统计图中学生到校方式是“步行”所对应扇形的圆心角的度数是 3若该校共有1500名学生请根据统计结果估计该校到校方式为“乘车”的学生人数 4现从四名采取不同到校方式的学生中抽取两名学生进行问卷调查请你用列表或画树状图的方法求出正好选到到校方式为“骑车”和“步行”的两名学生的概率.
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10分假定英语课上老师要求同桌之间交换修改作文请你修改你同桌写的以下作文.文中共有10处错误每句中最多有两处.错误涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错的词下划一横线并在该词下面写出修改后的词. 注意1.每处错误及其修改均仅限一词 2.只允许修改10处多者从第11处起不计分. Ladiesandgentlemen Youarewelcometoourschool.NowIwouldlikelytointroduceournet﹣schooltoyou. Ournet﹣schoolisveryhelpfullyinmanyways.Firstitmakesbothteachingandlearningeasierandmuchinteresting.Studentscangetmoreknowledgesinclass.Whoeverhaveacomputercanhavethelessonswegiveathome.Secondit'saccessibleforbothteachersandstudents.WecanmakegooduseoftheInternetsendinge﹣mailssearchinganyinformationweneed.Thirdthenetalsohelpsimproveourschoolmanagementbutmeettheneedsofthemoderneducation.Atlastasakeyschoolinourcityitsetsagoodexampletothenewly﹣builtschoolsandmaybeofsomehelptoit. That'sall!Thankyou.
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如图边长为2的正方形ABCD的顶点AB在x轴正半轴上反比例函数y=在第一象限的图象经过点D交BC于E. 1当点E的坐标为3n时求n和k的值 2若点E是BC的中点求OD的长.
6分OnedayIdrovewithmywifetospendaweekendwithmymotherlivinginthecountryside.WhenIarrivedhowevershewasn'tathome.SoIdecidedtohangoutwithouroldneighborMr.Brownwhoisafantasticwoodworker.WhenImethimhewasbuildingasmalltableinhisworkshop. Italkedwithhimforaboutforty﹣fiveminutes.DuringthatperiodoftimeIalsohelpedhimdosomesimplework.Ifoundhehadallkindsoftoolsintheworkshop.Itwasthosetoolsthathelpedhimtocreatebeautifulpiecesoffurniture. Weknowthattoolsusedbyprofessionalscanservethepurposesofeasingtheworkprocessorhelpingbeautifytheresults.Morethanlikelywe'vemadeuseoftoolstoimprovethecraftingandcompleteprojects.We'reallgratefulforcalculatorscomputersandsmartphonesfortheconveniencetheyoffer.AlongwiththesedevicesIthoughtaboutthevariousmethodsandskillsI'velearnedandintegrated融入intomydailylifeovertheyears. Ifthereisaspecificaspectofyourlifethatyoucannotovercomeperhapsyoujustneedatoolorpracticetomaketheenergyproducemuch﹣neededpower.Ifyou'restrugglingwithweightissuesorfinancialproblemstherearesomepracticalenergeticapplicationsyoucanlearn.Thesespiritualtoolscanincreaseyourability.Choosealternatethoughtsactionsandsolutions.Remembertheseareavailable. Giveyouanideaofhoweasysomeofthesepracticesare.Myten﹣year﹣olddaughterusesthematleastthreetimesaday.Forexamplewhentensionariseswithinherfriendshipcircleorifsheneedstorememberananswerforatestsheopensheronesmallboxofcandiesandcallsuponthemforassistance.Withthesetoolsshebecomessmarttocreatechangeandachievebetterresults. 1Whydidtheauthorgotothecountryside? A.Tohaveashorttrip. B.Tohaveatalkwithanoldneighbor. C.Topayhismotheravisit. D.Tolearntomakefurniturefromawoodworker. 2AccordingtotheauthorwhatmadeMr.Browncreatebeautifulfurniture? A.Theassistanceofhistools. B.Hisspecialtalents. C.Heauthor'stimelyhelp. D.Thecooperationwithothers. 3Whatisthethirdparagraphmainlyabout? A.Theachievementsofscience. B.Theimportanceoftoolsanddevices. C.Thebenefitsofapplyingtechnologytolife. D.Theconvenienceofmodernlife.
1分尽管他们面对许多困难他们从不放弃. Althoughtheymanydifficulitiestheynevergaveup.
8分Acouplehadasonelevenyearsaftertheymarried.Teywerealovingcoupleandtheboywastheappleoftheireye.Whentheboywasaroundfouryearsoldonedaytheftherwasverytiredafterworksoheaskedhiswifetopickuptheirson.Themotherwhowasverybusyinthekitchentotallyforgotaboutit. Latertheboylosthiswayonthestreet.Whenthesonwasfoundmissingthemotherhurriedtolookforhimbutshedidn'tfindhim.Themotherfeltverysadanddidn'tknowhowtofaceherhusband. Whenthefatherwenttothepolicestationafterhearingthatthesonwasmissinghelookedathiswifeandsaidjustfourwords.Whatdoyouthinkthefourwordswere?ThehusbandjustsaidIloveyoudarling. Thesonwasmissing.Ifshehadpickedhimupearlierthiswouldnothavehappened.Thereisnopointinblaming责备anyone.Hiswifehadalsolostheronlychild.Whathiswifeneededatthatmomentwascomfortandunderstandingfromherhusband.Thatiswhatthehusbandgavehiswife.Severalweekslaterwiththehelpofthepolicethecouplefinallyfoundtheirlostson.Thefamily'srelationshipbecamestrongeroverthattime. Sometimeswespendlotsoftimeaskingwhoistoblame责备Wemissmanychancestogiveeachothersupportandleteachotherfeelthewarmthofhumanrelationships关系.Getridof摆脱allyourunwillingness不乐意toforgive宽恕selfishnessandfearsandyouwillfindtheworldismuchmorewonderful. 1Whatisthemeaningoftheunderlinedphrasetheappleoftheireye? A.Apersonwhoalwayshasasweetsmileintheiropinion. B.Apersonwhoisasprettyasanappleintheiropinion. C.Apersonwhoislovedmorethananyoneelseintheiropinion. D.Apersonwholookslikeanappleintheiropinion. 2Whydidn'tthefatherpicktheboyuphimself? A.Hewasverylazy. B.Hethoughtthemotherhadpickedhimup. C.Heforgottopickhimup. D.Hewastootiredtodoit. 3Whatcanwelearnfromthispassage? A.Becarelessineverythingyoudo. B.Loveisn'tthemostimportantthing. C.Learntoforgiveothers. D.Everyonecanberight. 4Whatdoyouthinkofthehusband? A.Warmhearted. B.Careful. C.Hardworking. D.Broad宽minded.
先化简再求值1﹣÷其中x=.
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若圆锥的母线为5底面半径为3则圆锥的侧面积为.
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22.5分InAmericadriverseducationispartoftheregularhighschoolcurriculum.Everystudentinhisorhersecondyearofhighschoolisrequiredto1aclassindriverseducation. Howeverunlikeother2itisnotgivenduringthe3schoolyear.Insteaditisasummercourse.Thecourseisdividedupintotwopartsclasstimeforlearninglawsand4anddrivingtimetopracticedriving.Classtimeisnotunlikeanyotherclass.Thestudentshavea5fromwhichtheystudythebasic6theymustknowtopassthewrittendrivingtestthatisgiventoanyonewantingtogetadriver's7. Drivingtimeisachanceforthestudentstogetbehindthesteeringwheelandpracticestartsteeringbackingupparkingswitchinglanesturningcornersandalltheotheroperations8todriveacar.Eachstudentisrequiredtodriveatotalofsix9.Thestudentsaredividedupintogroupsoffour.Thestudentsandtheinstructorgooutdrivingfortwo﹣hourblocksoftime.Thuseachstudentgetshalfanhourdrivingtimeperouting.Theinstructoranddriversitin10seatsandtheotherthreestudentssitintheback. DriversEDcarsareunlikeothercarsinwhichtheyhavetwosetsofbrakesoneondriversideandoneontheothersidewherethe11sits.Thusifthestudentdrivershouldruninto12theinstructorcantakeover.Thecaralsohasanother13feature.Onthetopofthecarisasignthat14STUDENTDRIVER.Thatletsnearbydriversknowthattheyshoulduseextracautionbecausethestudentdriverisabeginningdrivernotveryexperiencedandintendedtodrive15. 1A.give B.take C.start D.seat 2A.schools B.practices C.operations D.courses 3A.basic B.extra C.regular D.special 4A.features B.regulations C.operations D.instructions 5A.text B.chance C.practice D.test 6A.laws B.skills C.signs D.parts 7A.experience B.education C.license D.curriculum 8A.separated B.intended C.required D.mixed 9A.courses B.hours C.tests D.classes 10A.driving B.passenger C.front D.window 11A.examiner B.instructor C.operator D.passenger 12A.difficulties B.blocks C.outings D.corners 13A.basic B.strange C.similar D.special 14A.reads B.writes C.warns D.tells 15A.quickly B.regularly C.practically D.slowly
1分政府应该采取措施保护环境. Governmentshouldprotectenvironment.
10分 HowtoMakeFriends Friendshipisaveryimportanthumanrelationshipandeveryoneneedsgoodfriends.Goodfriendshiphasmanybenefits.Itofferscompanionshipimprovesself﹣worthandpromotesgoodhealth.Therearetimesinourlivessuchaswhenwehaverecentlymovedintoanewtownorchangedourjobsorschools.Suchchangesoftenleavesuswithoutafriend1.Butformanyofustheprocessisdifficultandrequirescourage.Belowaresomehelpfulsuggestionsonhowtomakeandkeepfriends. 1.Associatewithothers. Thefirststeptomakingfriendsisassociatingwithotherpeople.Youcangotopublicplacestomeetnewpeople.Besidesyouwillneedtomakeyourselfknownbybecominganactivememberofsuchplaces. 2.Startaconversation Startingaconversationisthesecondmostimportantstepinmakingnewfriends.2Youcanalwaysstarttheconversation.Beingabletomakesmalltalkisaveryusefulskillinrelatingwithotherpeople. 3.3 Choosingfriendswithcommoninterestsisimportantinbuildingfriendshipastheseinterestswouldalwaysbringyouandyourfriendtogether.Hangingoutwillalwaysbeapleasantexperience. 4.Letitgrow. Itisagoodthingtostayintouch.Howevertrynottopressyournewfriendwithcallsmessagesorvisitsasthiswouldlikelywearhimorheroutandfinallyyoumayloseyourfriend.4Thebestfriendshipsaretheonesthatgrownaturally. 5.Enjoyyourfriendship Thebestwaytoenjoyyourfriendshipistoallowyourfriendstobethemselves.5Trynottochangethemfromwhotheyaretowhatyouwantthemtobe.Becomethekindoffriendyouwillwantyourfriendtobetoyou. A.Becheerful. B.Dothingstogether. C.Donotwaittobespokento. D.Trynottofindfaultwithyourfriends. E.Makingnewfriendscomeseasyforsomepeople. F.Forafriendshiptodevelopyouneedtostayintouch. G.Soyouwillneedtogiveyourfriendtimetoreacttoyou.
在一次综合社会实践活动中小东同学从A处出发要到A地北偏东60°方向的C处他先沿正东方向走了2千米到达B处再沿北偏东15°方向走恰能到达目的地C如图所示则AC两地相距千米.
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25分假定你是星光中学的李华将参加主题为Let'sRideBicycles的演讲比赛.请撰写一份演讲稿主要内容包括 1.目前汽车带来的空气污染和交通阻塞等问题 2.骑自行车的益处如节能环保有利健康等. 参考词汇低碳生活low﹣carbonlife节能energy﹣saving 注意1.词数100左右. 2.演讲稿开头和结尾已给出不计入总词数. Goodmorningeveryone IamLiHuafromXingguangMiddleSchool.ThetopicofmyspeechisLet'sRideBicycles. Thankyou.
8分FirstLadyMichelleObamaisabigfanofvolunteering.Volunteeringmeansworkingforfreetohelpsomeoneelse.Mrs.Obamasaysvolunteeringisveryimportant.Itshouldbepartofeveryone'slifeshesays. Manyteensagree.Theysaythathelpingothersfeelsgreatandmakesadifference.Thesedaysmoreteensvolunteerthanworkforpay.Teenscleanupparkswalkdogsatanimalsheltersvisittheelderlyandmore. Somecities﹣﹣﹣﹣includingSeattleChicagoandWashingtonD.C.﹣﹣﹣﹣requirehighschoolstudentstovolunteer.Studentsmustvolunteerinordertograduate.Thestudentvolunteerslearnnewskillsandhelptheircommunities. Manyparentsareinfavoroftheidea﹣﹣﹣﹣theysayvolunteeringhelpsteensbuildjobskills.Butmostteensdon'twanttobeforcedtovolunteer.Theysaytheyarebusy.Andtheysayvolunteeringisonlyfunifit'sachoice. Readbothsidesofthedebateanddecide. YES Volunteeringcanhelpteensgetintocollegeorgetajob. Manycitiesandtownsneedhelp.Volunteerscanhelpkeepimportantprogramsgoing. Notallteenswillvolunteerifitisn'trequired.Schoolsshouldrequirestudentstodoalltheycantogetreadyforadultlife. NO Mostteensarealreadyverybusywithclasseshomeworkjobsandsports.Forcingthemtodomoreisn'tfair. Itshouldbeuptoeachperson.Helpingoutdoesn'tfeelasgoodifyouhavetodoit. Findingavolunteerjobisn'talwayseasy.Studentsshouldn'tbekeptfromgraduatingbecauseofsomethingtheycan'tcontrol. 1ThewritermentionsMichelleObamainorderto. A.introducethetopicofthetext B.explainwhatvolunteeringis C.tellwhatshedoesfortheus D.showsheenjoysvolunteering 2AccordingtothetextinChicago. A.findingavolunteerjobisquiteeasy B.morepeoplewouldratherworkforpay C.volunteeringisamustforhighschoolstudents D.collegestudentshavetovolunteerbeforegraduation 3Theunderlinedpartareinfavorofinthetextmeans. A.drop B.develop C.catch D.like 4Whichquestiondoesthetextmainlydiscuss? A.Isvolunteeringgoodforstudents? B.Shouldstudentsberequiredtovolunteer C.Whatisthebesttimetovolunteer? D.Whichvolunteerjobsshouldstudentsdo?
8分 Usetheroof Ifyouhavetherightkindofroofsomeenergycompanieswillpaythecostoffixingsolarequipmentaround14000andletyouusetheenergyproducedfornothing.InreturntheygetpaidforunusedenergyfedbackintotheNationalGrid.Howeveryouhavetosigna25﹣yearagreementwiththesupplierwhichcouldpreventyoufromchangingtheroof. Useyourparkingspace Aparkingspaceorgaragewhichyouhaven'tusedcanmakemoney.Ifyouliveclosetoacitycenteroranairportyoucouldmakeanythingupto200or300aweek.PutanadvertisementforfreeonLetparkorAtmyhousepark. Rent出租aroom Notonlywillaspareroomearnyouanincomebutthankstothegovernment﹣backedrentaroomprogramyouwon'thavetopayanytaxonthefirst4500youmakeperyear.TryadvertisingyourroomonRoomspareorRoommateeasy. Makemoneyduringspecialevents Don'twantafull﹣timelodger?Thenrentonashort﹣termbasis.IfyouliveinthecapitalrentingaroomoutduringtheOlympicsorotherbigeventscouldbringinmoney.Grashpaddercanadvertiseyourspace. Liveonset Rentingyourhomeoutasafilmsetcouldearnyouhundredsofpoundsadaydependingonthefilmproductioncompanyandhowlongyourhomeisneeded.AquicksearchontheInternetwillbringupdozensofonlinecompaniesthatallowyoutoregisteryourhomeforfree﹣butyouwillbechargedifyourhomegetspicked. 1Ifinoneyearyouearn5000fromrentingaroomyouneedtopaythetaxbasedon. A.500 B.800 C.4500 D.5000 2Duringabigeventtorentoutaroomwherecanyouputanadvertisement? A.OnLetpark. B.OnRoomspare. C.OnRoommateeasy. D.OnGrashpadder. 3Ifyouhopetogetenergyfreeyoumust. A.signanagreementwiththegovernment B.payaround14000fortheequipment C.keeptheroofunchangedwithin25years D.selltherooftosomeenergycompanies 4Thetextismostprobablywrittenfor? A.Lodgers. B.Houseowners. C.Advertisers. D.Onlinecompanies
如图抛物线y=ax2﹣3ax﹣4aa<0与x轴交于AB两点直线y=x+经过点A与抛物线的另一个交点为点C点C的横坐标为3线段PQ在线段AB上移动PQ=1分别过点PQ作x轴的垂线交抛物线于EF交直线于DG. 1求抛物线的解析式 2当四边形DEFG为平行四边形时求出此时点PQ的坐标 3在线段PQ的移动过程中以DEFG为顶点的四边形面积是否有最大值若有求出最大值若没有请说明理由.
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