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（1）解方程：+＝4． （2）解不等式组：．
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解不等式组写出符合不等式组的整数解并求出这些整数解中能使关于x的方程2x＋k＝－1的解为非负数的概率
解方程组或不等式组 1解不等式并把解集表示在数轴上3x+2﹣5x＜﹣3 2求不等式组的的整数解
解不等式组并写出不等式组的整数解.
解不等式组请结合题意填空完成本题的解答I.解不等式1Ⅱ解不等式2Ⅲ把不等式1和2的解集在数轴上表示出
对于不等式组下列说法正确的是
此不等式组的正整数解为1，2，3
此不等式组的解集为﹣1＜x≤
此不等式组有5个整数解
此不等式组无解
解方程与不等式组 1解方程组 2解不等式组．
解方程组与不等式组1解方程组2解不等式组．
解不等式组解不等式得_____解不等式得_____所以不等式组的解集是_____.
1解方程组2解不等式组然后把解集在数轴上表示出来并写出该不等式组的最大整数解．
1解方程x2+2x﹣4﹦0 2解不等式组并写出不等式组的整数解．
1解方程组2解不等式x－.3解不等式组并把不等式组的解集在数轴上表示出来4+|－2|＋+－12011
对于不等式组下列说法正确的是
此不等式组的正整数解为1，2，3
此不等式组的解集为﹣1＜x≤
此不等式组有5个整数解
此不等式组无解
1解方程﹣1= 2解不等式组并写出该不等式组的正整数解．
已知三个一元一次不等式2x＞42x≥x－1x－3＜0.请从中选择你喜欢的两个不等式组成一个不等式组求
对于不等式组下列说法正确的是
此不等式组的正整数解为1，2，3
此不等式组的解集为﹣1＜x≤
此不等式组有5个整数解
此不等式组无解
解不等式组请结合题意填空完成本题的解答.1解不等式①得________2解不等式②得________
1解不等式8－5x－2＜4x－1＋132若1中的不等式的最小整数解是方程2x－ax＝4的解求a的值.
解不等式组请结合题意填空完成本题的解答.1解不等式①得2解不等式②得3把不等式①和②的解集在数轴上表
分别指出p∨qp∧q綈p的真假.1p梯形有一组对边平行q梯形有两组对边相等.2p1是方程x2－4x＋
1解方程 2解不等式组并写出该不等式组的整数解．
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7.5分ThethemeparkyouareprobablymostfamiliarwithisDisneyland.Itwillbringyouintoamagical1andmakeyourdreamscometruewhetheryouaretravelingthrough2ormeetingyourfavoritefairytaleorDisneycartooncharacter.Asyouwanderaroundthefantasyamusementparkyoumay3SnowWhiteorMickeyMouseinaparade.OfcourseDisneylandalsohasmany4ridesfromgiantswingingshipstoterrifyingfree﹣falldrops.Withalltheseattractionsnowondertourismisincreasing5thereisaDisneylandifyouwanttohavefunandmorethanfuncometoDisneyland! 1A.world B.country C.school D.village 2A.house B.shop C.space D.room 3A.buy B.have C.see D.make 4A.moving B.exciting C.hurting D.damaging 5A.whatever B.whichever C.whoever D.wherever
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8分ItwassaidthatinherfortiesRoseGreenstartedtolearnpaintingbyherselfandbecameoneofBritain'sbest﹣knownpainters.Shediedpeacefullyearliertodayattheageof81. Whatsheisfamousforispaintingacolorfulandfunnyworldoffatwomen.ThecomedianVictoriaWoodoncedescribedherasRubenswithjokes.DescribingherownworksheoncesaidIdon'tknowhowmypictureshappentheyjustdo. Herpicturesgainedalotoffansforher.Herfanshadlongbeenangrywiththemajorartgalleriesforfailingtonoticeherworkswhichsellforonly40000.In2008theystartedafightagainstTateModernfornotbuyingRose'spaintings.ButtowardstheendofherlifesheenjoyedwiderpraisewithamajorexhibitionlastyearattheBalticgalleryinGateshead.JessWilderco﹣ownerofLondon'sPortalGalleryhadshownherpaintingsformorethan30years. ShehasthreesistersandRoseleftschoolat14andin1943movedtoLondonandbecameashowgirlinasinginghall.In1946shemarriedherchildhoodfriendJohnwithwhomsheranabarforashorttime.TheirsonalsonamedJohnwasbornin1950andtheymovedtoSouthernRhodesiain1951﹣amovesaidtobeaturningpointforRose.Afterpickingupsomepaintsbelongingtohersonshebegancreatingpicturesonwood.ThefamilylatermovedtoPlymouthwhereinthesummermonthstheyranahotel. Alocalexhibitioninthemid﹣1970sattractedmanypeoplefollowedbyacoverintheSundayTimesmagazineandRose'sfirstLondonexhibition.In1979MelvynBraggmadeafilmaboutRose. 1WhatcanweknowaboutRoseGreen'spaintings? A.Theywereallboughtbyallkindsofartgalleries. B.Theyhelpedbringchildrenalotofhappiness. C.Theywereallfinishedwhenshewasyoung. D.Theyweremainlyaboutfatwomen. 2IntheopinionofRoseGreen'sfans. A.TateModernshouldbuyGreen'spaintings B.RoseGreen'sworksweresoordinarythatnogallerynoticedthem C.TateModernrefusedGreen'spaintingsfortheirbeingofnovalue D.RoseGreen'sworksweretooexpensivetobuy 3ItcanbeinferredthatonherwaytobeinganartistRoseGreen. A.gotalotofhelpfromherson B.madeafilmtosupportherlifeasanartist C.beganadifferentlifeaftermovingtoSouthernRhodesia. D.beganherlifeasafamousartistaftermovingtoPlymouth 4WhichofthefollowingistherightorderofRoseGreen'sexperiences? a.movedtoSouthernRhodesia b.becameashowgirlinasinginghall c.marriedJohn d.ranabar e.begancreatingpicturesonwood f.movedtoPlymouth A.b﹣d﹣f﹣e﹣a﹣c B.b﹣c﹣d﹣a﹣e﹣f C.a﹣d﹣e﹣f﹣b﹣c D.d﹣e﹣a﹣b﹣c﹣f
6分Moviemakersatonetimeworriedthattheymightbeputoutofbusinessbytelevision.Recentlyhowevermoreandmorepeoplehavebeengoingtothemovies.ThismaybepartlybecausetheeconomicsituationinAmericahasworsened.Whenatthemoviespeopleforgettheirtroublesastheygetinvolvedinthestoryonthescreen.Alsodirectorshaverecentlybeenproducingpicturesthatlargenumbersofpeoplewanttosee. Americansinthemillionsarereturningtotheirloveaffairwiththemovies.MotionpictureindustryexpertsseetwomainfactorsresponsibleforthisanincreasedneedbyAmericanstoescapefromeconomicworriesandalargenumberofnewmovieswithbroadaudienceappeal. Moviemakersadmitthattheirrisingpopularityispartlytheresultofpooreconomicconditionswhichtraditionallybringanincreaseintheaterattendance.WhenpeoplearefearfulaboutthefuturetheylookforescapecommentsJackValentipresidentoftheMotionPictureAssociationofAmerica.Inashadedtheaterwitha65﹣footscreenyouloseyourselffortwoandahalfhoursandpeoplefindthisbeneficial. 1Whatdidmoviemakersworryaboutbefore? A.Thatnoonewouldgotothecinema. B.Thatmoviescouldn'tbeabusinessanymore. C.Thattheirmoviesmightbeplayedontelevision. D.ThatpeoplepreferredwatchingTVtoseeingfilms. 2Whyaresomanypeoplegoingtoseemoviesnow? A.Becausepeoplenowhavemuchmoremoney. B.Becausepeoplehavetroubles. C.Becausepeoplewantedtoescapefromreallife. D.BecausewatchingmoviesisnowmuchcheaperthanwatchingTV. 3What'sthepassagemainlyabout? A.ThatmoreAmericanpeoplearewatchingmoviesthanbefore. B.Thattelevisionwilltaketheplaceofmovies. C.America'seconomicdepression. D.ThatAmericansprefertowatchmoviesratherthanwatchTV.
30分假设你是李华有一些国外的学生要来你校访问了解你们学校学生学习及高中文理科的选择.请你写一篇文稿介绍你所做的选择并说明选择的理由. 注意1开头和结尾已为你写好不计入总词数 2词数100左右 3短文中不能出现与本人相关的信息.参考词汇文科arts理科science Goodafternooneveryone. Welcometoourschool! Thanks!
8分Manyofushavebecomesoreliant依赖的onoursmartphonesthatweusethemtocarryoutunbelievable221taskseveryday. Astudyof2000smartphoneownersshowsthattheaverageuserreachesfortheirphoneat731ameachmorningtocheckpersonalemailsandFacebook.Andbeforethey'veevengotoutofbedmostofthemchecktheweatherreadthenewsandsendatextortwotofriends.Italsoappearedthatpeoplewillcheckthetraintimesdotheirbankingandupdatewhattheywantearlyintheday. Inanaverageweektheresearchdiscoveredthatuserspickuptheirphonemorethan1500timestocompletedifferenttasksfromemailstoplayinggamesandpostingtosocialmedia.Andtheaveragesmartphoneuserisontheirphoneforthreehoursandsixteenminutesaday.Thisamountstoalmostonefulldayaweekusingtheirphonesoit'snowonderalmostfourintenusersadmittedfeelinglostwithouttheirtool. Manyownersalsoadmittedtofindingthemselvesusingtheirphonewithoutrealizingthey'redoingsowithtwothirdssayingtheyhavemanagedtologin登录andbrowse浏览Facebookwithoutthinking.Andsurprisinglyfourintensaidtheyhaveatonetimeoranothercheckedtheiremailsautomatically自动的withoutthinking. Thestudyhasalsoshowedthatoursmartphonesarenowbecomingmoreofago﹣to﹣gadgetreplacingdesktopsandlaptopswhichpeopleonlyturntoforonaverage140tasksinatypicalday. 1Taskscarriedoutonsmartphonesareaboutmorethanthoseondesktopsandlaptops. A.221 B.140 C.1.500 D.80 2Whatcanbeinferredfromthefourthparagraph? A.Peopleoftenusetheirphoneunconsciously无意识地. B.OnethirdmanagedtobrowseFacebookwithoutthinking. C.Halfofpeoplecheckedtheiremailsautomatically. D.Sixintenpeopledon'tchecktheiremails. 3Theunderlinedwordgo﹣to﹣gadgetinParagraph5means. A.afunnyexpression B.animportantstudy C.atoolwithintelligence D.aninterestinggame 4What'sthebesttitleforthepassage? A.Arewedependentonoursmartphones? B.Thefunctionsofsmartphones C.Thedisadvantagesofsmartphones D.Smartphoneswilltaketheplaceofdesktopsandlaptops
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2018年8月中国铁路总公司宣布京津高铁将再次提速担任此次运营任务是最新的复兴号动车组提速后车速是之前的1.5倍100千米缩短了10分钟问提速前后的速度分别是多少千米与小时
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如图在平行四边形ABCD中AC⊥DEAE＝ADAE交BC于O． 1求证∠BCA＝∠EAC 2若CE＝3AC＝4求△COE的周长．
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8分Nowadaysthereisaninterestingthinghappeningduringthecourseofthecommunicationsrevolutionswestoppedinpersontalkingtoeachother. RecentlyIwasinaparkhavingatalkwithagoodfriendandatthatmomenthissmartphoneranginterruptingourconversation.Therewewerewalkingandtalkingonabeautifulsunnydayand…Ibecameinvisibleabsentfromtheconversation. Thetelephonewhichusedtoconnectyoutotheabsentnowmakespeoplesittingclosetoyoufeelabsent.WhyisitthatthemoreconnectedwegetthemoredisconnectedIfeel?Everyadvanceincommunicationstechnologyisatragedytotheclosenessofhumaninteraction.WithemailandinstantmessagingovertheInternetwecannowcommunicatewithoutseeingortalkingtooneanother.Withvoicemailyoucanconductentireconversationswithouteverreachinganyone.IfmymomhasaquestionIjustleavetheansweronhermachine. Asalmosteverycontactwecanimaginebetweenhumanbeingsgetsautomatedwearenowfeelingmoredistantfromoneanother.Youcan'tevencallapersontogetthephonenumberofanotherpersonanymore.Directoryassistanceisalmostalwaysfullyautomated. Iamnotagainstmoderntechnology.IownacellphoneanATMcardavoicemailsystemandanemailaccount.Givingthemupisn'twise…they'reagreathelptouse.It'ssomeoftheirpossibleconsequencesthatmakemefeeluneasy. MoreandmoreIfindmyselfhidingbehinde﹣mailtodoajobmeantforconversationorbeingrelievedthatvoicemailpickedupbecauseIdidn'treallyhavetimetotalk.Theindustrydevotedtohelpingmekeepintouchismakingmelonelier. SoI'veputmyselfontechnologyrestrictionnoinstantmessagingwithpeoplewholivenearmenocellphoninginthepresenceoffriendsnolettingthevoicemailpickupwhenI'mathome. 1Whichofthefollowingwouldbethebesttitleofthepassage? A.TheAdvanceofCommunicationsTechnology. B.TheStoryofCommunicationsRevolution. C.TheConsequencesofModernTechnology. D.TheAutomationofModernCommunications 2Thesentencenowmakespeoplesittingclosetoyoufeelabsentmeansthat. A.thepeoplesittingbesideyouhavetogoawaytoreceiveaphonecall B.moderntechnologymakesithardforpeopletohaveaface﹣to﹣facetalk C.youcanhardlygetintouchwiththepeoplesittingbesideyou D.peoplecannowdotheirworkwithoutgoingtotheoffice 3Thewriterfeelsthattheuseofmoderncommunicationsis. A.embarrassing B.disappointing C.satisfying D.encouraging 4Thepassageimpliesthat. A.moderntechnologyisinterruptingourcommunications B.moderntechnologyisbridgingthepeople. C.moderntechnologyisdevelopingtoofast D.moderntechnologyisseparatingthepeople
25分假如你是星光中学的学生李华将参加主题为MyChineseDream的英语演讲比赛请撰写一篇演讲稿主要内容包括 1.梦想成为一名山村教师帮助山村孩子 2.山区偏僻教育落后 3.父母和朋友都反对 4.我会… 注意1.词数100左右 2.开头和结尾已为你写好. Goodmorningeveryone! Thankyou!
10分OnceuponatimetherewasarespectedmonkwhosenamewasWisdomfollowedbytwoyoungmonkswalkingfromonetowntoanother1theyfoundalake.Tiredandthirstytheystoppedtohavearest.2oldmonkpointingtothelakeaskedthe3youngonetogethimsomewater. Justwhilethemonkarrivedatthelakehesawacart4drawbyanoxstartedcrossingthelake5madethewaterverymuddy.ThelittlemonkthoughtHowcanItakethismuddywatertomymastertodrink!Sohecameback6anywatersayingThewaterisverymuddy.Idon'tthinkthewaterissuitabletodrink. Afteramomentthesamemonkwasasked7getwateragain.Whenhewentbacktothelakehefoundthatthemud8settledownalreadysohecollectedbackapotofwater.WisdomlookedatthewaterhappilyandthenupatthemonkTomakethewaterclean9youneedtodoisjusttoletitbeandthemudwouldsettledownonitsown. Yourmindisalsothesameasthemuddywater.Whenit10disturbjustletitbe.Giveitalittletimeanditwillsettledownitself.
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15分Iamextremelyhonoredtobeselectedasawinnerofthisyear'sLasker﹣DeBakeryClinicalMedicalResearchAward.Iexpressmywholeheartedthankstothejurymembersfortherecognition认可ofmy1contributetothediscoveryofQinghaosu青蒿素formalaria疟疾treatment. InmychildhoodIwitnessedoccasionswhenpatients2rescuebyfolkChinesemedicinerecipes.Howeverneither3Idreamthenofsuchacloselinkofmywholelifetoresearchingthoseamazingherbs草药norcouldIimaginethenthattodayIwouldexperiencesuchanexcitingmomentwhenmyresearchhasbeenhighlypraisedbytheinternational4sciencecommunity.Istartedresearchonherbalmedicinesin1955.My5curiousaboutherbsturnedintoastrongmotivationaftercollegetrainingontraditionalChinesemedicine6arrangebytheinstitute.EquippedwithasoundknowledgeinbothtraditionalChinesemedicineandmodernpharmaceuticalsciences制药学we7successaccomplishedthediscoveryanddevelopmentofQinghaosufromQinghao. ThediscoveryofQinghaosuis8gifttomankindfromtraditionalChinesemedicine9hasservedpeopleinChinaandotherAsiancountriesformanycenturies.Continuousexplorationanddevelopmentoftraditionalmedicinewill10doubtbringmoremedicinestotheworld.…
如图①在矩形ABCD中点P从AB边的中点E出发沿着E﹣B﹣C匀速运动速度为每秒2个单位长度到达点C后停止运动点Q是AD上的点AQ＝10设△APQ的面积为y点P运动的时间为t秒y与t的函数关系如图②所示． 1图①中AB＝BC＝图②中m＝ 2当t＝1秒时试判断以PQ为直径的圆是否与BC边相切请说明理由 3点P在运动过程中将矩形沿PQ所在直线折叠则t为何值时折叠后顶点A的对应点A′落在矩形的一边上．
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8分Theworld'searliestknownfishhooks钩showthathumansfishedintheopenseaformuchlongerthanpreviouslythought.Paststudieshaveshownthatearlyhumanswereabletocrosstheopenoceanasfarbackas50000yearsagobutevidencethattheycouldfishwhileintheopenseadatedbackonlyto12000yearsago. Inmostareasoftheworldevidenceforourearlyancestors'coastalexploitation开发wasdrownedbyrisingsealevelssaidresearcherSueO'Connor. NowO'Connorandhercolleagueshavefoundevidenceofprehistoricfishingtoolsandtheremainsoflargefishsuchastuna金枪鱼atacaveshelterknownasJerimalailocatedintheSoutheastAsianislandnationofEastTimor.Theirdiscoveryuncoveredfishinghooksmadefrombonethatdatebacktoabout42000yearsago. MIfspossiblethatpeoplecaughtthetunainthedeepchannelthatliesoffthecoastoftheJerimalaishelterO'Connorsaid. Thesitefirstuncoveredin2005alsoincludedbonepointsshellbeadstheremainsoffishturtlesbatsandbirdsandnearly10000stonetools.TheislandofTimorhasveryfewlandanimalsoverallandonlysmallbirdscalltheislandhomeperhapsexplainingwhytheancientpeopleherewentfishing.Abouthalfthefishremainsatthesitecamefromfishsuchastuna.Catchingsuchfast﹣movingfishrequiresmuchplanningandcomplextechnologysuggestingthatearlyhumansdevelopedtheseskillsearlierthanpreviouslythought. Someotherscientistsmightsaythatmostofthefishbonesseenarefromyoungfishandthusmighthavebeencaughtmoreeasilyoffthecoastasopposedtoinopenwaters.Whilethismaybethecaseit'sstillnoteasytocatchtuna一itrequiresnetssetindeepwater. 1AccordingtoSueO'Connorevidenceforourearlyancestors'coastalexploitation. A.indicatedtunawasacommondishforourearlyancestors B.showedthetrendofseamovement C.wasburiedincaveshelters D.wasdifficulttofind 2SueO'Connor'sstudyadvancedthedateofhumans'fishingintheopenseaby. A.50000years B.42000years C.30000years D.12000years 3WhydidtheancientpeopleontheislandofTimorgofishingaccordingto. A.Theislandwastoosmallforthelargepopulation. B.Therewerefewanimalsonlandforfood. C.Itwasveryeasytocatchfisharoundtheisland. D.Peopletherelovedeatingfish. 4Whatcanwelearnfromthelastparagraph? A.SomescientistshavestudiedthesamecasemuchearlierthanSueO'Connor. B.SomescientistsdoubtedSueO'Connor'sstudy. C.ItwasnoteasyforSueO'Connortocarryoutthestudy. D.TheresultofSueO'Connor^studyneededtobetestedindeepwater.
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6分Doyouwanttotravelabroad?Ifyoudoherearesomecitiesaroundtheworldyoucanconsidertravelingto. AthensGreece ItisthebirthplaceofWesterncivilizationnowalmost4000yearsold.ExploretheAcropolisinAthensandthenvisitthenewAcropolisMuseumtotrulyappreciatetheancientsettlement.WalkinSocrates'footstepsaroundtheAgora﹣﹣﹣﹣thecenterofsocialactivitiesinancientGreece.BeyondtheAcropolisyoucanalsoexplorethefleamarkets跳蚤市场ofMonastirakiandPlaka. BudapestHungary Budapestisknownasthecityofnaturallywarmpoolsofwatercalledspas.TheHungariancapitalfeatures16th﹣﹣﹣centuryTurkishpoolsaswellasmedicinalspas.Budapestisalsoalong﹣﹣termfoodiecity.Trylocalspecialties招牌菜likeHungariangoulashrichwithbeefonionspotatoesandspices. QueenstownNewZealand OnNewZealand'sbeautifulSouthIslandQueenstownisoneofthetopplacesintheworldforhikingboatingandskiing.NearbyMilfordSoundoffersthepeacefulbeautyforwhichNewZealandisfamous.PerhapsthemostfamousNewZealandproductistheLordoftheRingsmovies.Takearoadtripandexploreplaceswherethemoviewasfilmed. DubaitheUnitedArabEmirates Dubaiisacityfamousforluxury奢侈的goods.Oneofitsshoppingcentersevenhasanindoorskislope.DubaiisalsohomeoftheBurjKhalifathetallestbuildingintheworld.AndtheBurjAl﹣﹣ArabhotelisonanartificialislandintheArabianSea. 1WherecanyoulearnaboutsocialactivitiesinancientGreece? A.AtPlaka B.AtMonastiraki. C.AttheAgora D.AttheAcropolis 2Toenjoythepeacefulbeautyofnatureoneshouldgoto. A.Greece B.Hungary C.NewZealand D.theUnitedArabEmirates 3Dubaiwouldmostlikelyattractthosewhoareinterestedin. A.deliciousfood B.outdoorsports C.theancientcivilization D.man﹣﹣madewonders
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此不等式组有5个整数解 此不等式组无解
此不等式组有5个整数解 此不等式组无解
此不等式组有5个整数解 此不等式组无解
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