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不等式组的解集是（ ）
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解不等式组:请结合题意填空完成本题的解答.Ⅰ解不等式①得__________Ⅱ解不等式②得_____
下列命题中假命题的个数是①x=2是不等式x+3≥5的解集②一元一次不等式的解集可以只含一个解③一元一
0个
1个
2个
3个
解不等式组.把不等式组的解集在数轴上表示出来并写出不等式组的非负整数解.
解不等式组请结合题意完成本题的解答.1解不等式①得.2解不等式③得.3把不等式①②和③的解集在数轴上
解不等式组请结合题意填空完成本题的解答.Ⅰ解不等式①得________Ⅱ解不等式②得________
解不等式组请结合题意填空完成本题的解答.Ⅰ解不等式①得Ⅱ解不等式②得Ⅲ把不等式①和②的解集在数轴上表
把不等式组的解集表示在数轴上如图所示那么这个不等式组的解集是.
解不等式组时解①式得______解②式得______于是得到不等式组的解集是______.
解不等式组并在数轴上表示不等式组的解集.
解不等式组请结合题意填空完成本题的解答.Ⅰ解不等式①得Ⅱ解不等式②得Ⅲ把不等式①和②的解集在数轴上表
解不等式组请结合题意填空完成本题的解答.Ⅰ解不等式①得______________Ⅱ解不等式②得__
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_____.
解不等式组将不等式组的解集在数轴上表示出来并写出不等式组的非负整数解.
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
已知不等式组1当时不等式组的解集是_____当时不等式组的解集是_____2由1可知不等式组的解集是
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________
解不等式组把解集表示在数轴上并求出不等式组的整数解.
解不等式组并在数轴上表示出不等式组的解集.
解不等式组并在数轴上表示不等式组的解集.
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LastOctoberItoldmypupilsinPomptonSchoolaboutmyplan.I'dlikeyoutodojobstomakesome1Isaid.Thenwe'llbuyfoodforsomeoneinneed. Iwantedthemtoexperiencethatit's2togivethantoreceive.Ihopedtheycouldexperienceasenseoftheirownabilitytomakeachange. EarlyinThanksgivingweekthechildrencouldn'twaitto3.Beforepayingforthe turkeyandotherfoodwechoseinthesupermarketKristinecried. Flowers!Andthegroupallrantowardtheholiday4. Youcanteatflowers!Isaid5.Afterallitwashelpfultobuymorefood. ButMrs.Sherlockcametheloud6wewantflowers. Inthemiddleoftheplantstherewasapotofunusuallypurplemums.7willlikethisone.thechildrenagreed. 8theaddressofapoorgrandmotherwhohadlivedaloneforyearswesetoff.An hourlaterwestoppedinfrontofasmallhouse.Athinwomanwitha9facecametomeetus. Asthekidscarriedallthefoodintheoldwomanoohedandaahed﹣muchtohervisitors'pleasure.WhenAmyputthemumsonthetablethewomanseemed10.She'swishingitwasabagoffoodIthought. 11isyourclosefriendinthewoods?Michaelasked. Thewomanbrightened.Thebirds.Theyoftenflyoverforfood12Isharemybreadwiththemshesaid. Thenwereturnedtothecar.Throughthewindowwesawherwalkpasttheturkeystraighttothe13.Sheputherfaceinthemandlookedupwithabigsmile.Shewas14beforeoureyes. Inthatoneshortmomentthechildrenhadseenforthemselvesthe15theyownedtomakeachange.SometimesapersonneededapotofnicepurpleflowersonadarkNovemberday. 1A.friends B.mistakes C.money D.room 2A.cheaper B.better C.safer D.funnier 3A.takeawalk B.dohousework C.havearest D.goshopping 4A.cards B.camps C.plants D.photos 5A.unhappily B.warmly C.carelessly D.freely 6A.voice B.music C.sound D.noise 7A.He B.I C.You D.She 8A.At B.With C.In D.After 9A.proud B.fat C.sad D.handsome 10A.relaxed B.bored C.worried D.surprised 11A.Who B.How C.Why D.Where 12A.although B.but C.because D.if 13A.books B.flowers C.woods D.rooms 14A.changed B.broken C.treated D.refused 15A.habit B.ability C.interest D.courage
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VisitingJoshuaTreeNationalParkCalifornia JoshuaTreeNationalParkisnearly800000acreslargeandsurroundspartsoftheMojaveandColoradoDesertsinSouth﹣centralCalifornia.Althoughbarrenatfirstglancetheparkisfullofwildlifeandprovidesavarietyofentertainmentactivitiesfromhikingtoclimbing.Withinathree﹣hourdriveJoshuaTreeNationalParktakesatleastafulldaytovisit. Thingstodo •Hikingopportunitieswithintheparkincludeseveralchoicesfrom12self﹣guidednatureroutinestoall﹣dayback﹣countryhikes. •JoshuaTreeNPhasninecampinggroundsandback﹣countrycampingisalsoallowed. •Rockclimbingisapopularactivityintheparkwhichhas10mountainsgreaterthan5000feetinheight. Whentovisit JoshuaTreeNPisopen365daysayearalthoughthebesttimetovisitisOctoberthroughAprilwhentemperatureismilder.Thepeakseasoniswhenthewildflowersbloomandthesummermonthsaretheleastcrowded. Whattobring Inadditiontoyourcameraandtelescopebesuretocarrylotsofwater.Parkandguidingmapscanbepickedupatanyofthethreevisitorcenters. Fees •Parkingfees:Youcanbuyaseven﹣dayvehiclepermit周票for﹩15asingleentrypermitfor﹩5orJoshuaTreeNationalParkannualpassfor﹩60. •Campingfees:Theyvarybycampingground 1Theunderlinedwordbarreninthefirstparagraphcanbereplacedby. A.rich B.beautiful C.deserted D.useless 2WhenisthebesttimetovisitJoshuaTreeNP? A.March B.May C.June D.September 3IfonegoestoJoshuaTreeNPbycarandstaystherefor9dayshowmuchatleastoneshouldpayfortheparkingfees? A.﹩60 B.﹩15 C.﹩25 D.﹩30 4Whatcanbeinferredfromthetext? A.Thereareguidesfornaturetrails. B.Touristscaneasilyvisitthewholeparkwithinaday. C.Thecampingfeesattheninecampinggroundsaredifferent. D.Touristsmusttakeparkandtrailmapswiththemwhentheyvisitthepark.
某同学在校运动会上不慎受伤用30%的双氧水给伤口消毒他惊奇的发现涂抹双氧水时有气泡产生于是他和兴趣小组的同学们开展了以下探究活动． 1血液中含有过氧化氢酶请用化学方程式说明甲同学涂抹双氧水时产生气泡的原因如何用实验验证产生的气体． 2查阅资料FeCl3也可加快双氧水分解兴趣小组的同学们对影响双氧水分解快慢的因素进行了以下探究 通过上述操作兴趣小组的同学们想探究的是因素对双氧水分解快慢的影响．为确保实验结果准确上述操作还应控制哪些因素①②．
abc三种物质的溶解度曲线如图所示请根据图象回答问题 1二氧化碳在水中的溶解度随温度的变化趋势和以上物质相似用abc填空． 2t2温度下等质量的ab两饱和溶液溶剂的质量ab填“＞”“＜”或“＝”． 3M点对应的c溶液降低温度溶质的质量分数填“增加”“减少”或“不变”． 4t1温度下向200g水中加入60g物质b求所得溶液中溶质的质量分数结果保留0.1%．
Askilledtravelercantakeataxibuyfoodinamarketandgetdirectionsfromastrangerthroughhandgesturesalone. Thingscangetlostintranslationwhenatypicalgesturefromyourcountrymeanssomethingcompletelydifferentinotherpartsoftheworld. BelowaresomecommonNorthAmericangesturesthatoftencauseproblemsabroad. 1.VinAustraliaandEngland In1992GeorgeBushvisitedAustraliaandfromthewindowofhiscarhelduphisindex食指andmiddlefingersintheVshape.ThisVmeansvictoryinEnglandorpeaceinNorthAmerica.Toobaditmeansupyours.inAustralia. 2.OKinFrance MakingacirclewithyourfingermeansgreatorfineinNorthAmerica.It'salsousedbydiverstocommunicatethattherearenoproblems.InFrancehoweverthisgesturemeanszero.Unlessyou'remotioningtoaFrenchdiveryoumightbecommunicatingthatsomethingorsomeoneisworthless. 3.One﹣handedgivinginJapan IntheWestpeoplearen'tespeciallymindfuloftheirhandswhentheyofferobjectstoothers.InJapanitispoliteandexpectedforpeopletomakeofferingswithbothhands.Ifyougivesomeoneabusinesscardorhandthemyourcameratotakeaphotobesuretopassontheitemwithbothhands.Thisshowsthatyouarefullyattentiveandcarefulintheoffering.Aone﹣handedpresentationmightbetakenasdismissive蔑视的. 4.GotyourNose!inTurkey Amanwiththegesturedoesn'thaveasetNorthAmericanmeaningexceptwhenplayinggotyournosewithachild.ItalsomeanstheletterTinAmericanSignLanguage.InTurkeythisgestureisaggressivelyrude. 1IfyouwanttoexpressyoursatisfactioninNorthAmericayoucanuse. A.Vgesture B.OKgesture C.Thumbs﹣up D.Gotyournose 2Whatcanweinferfromthepassage? A.Thegesturesarethesamearoundtheworld. B.AvgestureinEnglandmeanspeace C.AOKgestureinAmericameansZERO D.YouhadbettergivesomeonesomethingwithbothhandsinJapan. 3Whichpartdoesthepassagebelongtoinnewspaper? A.sports B.education C.food D.tourism 4Whomightbeinterestedinthispassage? A.Americans. B.Japanese. C.Frenchmen. D.Englishmen.
WhenIaskedmymother﹣in﹣lawtoselectwhichmealsshe'dlikemetoorderfromthehome﹣deliverymenusheonlychosetheonesherhusbandwouldlike.Thisgoeswaybeyondpoliteness.Sheisactuallyfeelinguncomfortablevoicingwhatshewants.ShedevelopedthemainsymptomofAsker'sSyndromethatone'sunabletoaskforwhatonewants. It'snotjustolderwomenwhohavethisproblem.Asker'sSyndromecanstriketheyoung.Ihavesinglefriendswhowon'taskamanoutonadatebecausetheyfearbeingconsideredtooforward.Myfive﹣year﹣olddaughterVioletisshowingtheearlystagesofAsker'sSyndrome.She'slearnedthatwomendon'taskbutratherdrophints.She'llsayRememberlastSundayafternoonwewenttothepark?ratherthanCanwegotothepark? Apartfromwomenandgirls'problematicrelationshipwithappetitefoodanddatingit'swidelyreportedthatwomenarelesslikelythanmentoaskforpayrisesandpromotions.Insteadtheywithdrawhopingthatsomebodyelsewilldecidetheyareworthyandmakethempromoted. NodoubtmanywomendevelopAsker'sSyndromeasadefensivemeasurebecausethey'vebeenlabeledaspushyorrudeforsimplyaskingforwhattheywant.Butinthelongtermchoosingnottoexpressourdesiresdoesn'tserveuswell. It'stimetocureourselvesandourgirlsofAsker'sSyndrome.Idon'twanttoraiseafuture‘burntchopmother'whodeniesherwishforfoodpowerandsuccessandanythingelse.Iinsistthatsheaskforwhatshewantsdirectly. Forwomeninourcultureaskingisaskillthatweneedtolearnandpractice.Andifwealldoitthenwomenaskingwillbecomethenormratherthantheexception. 1Theauthor'smother﹣in﹣lawismentionedinParagraph1to. A.introducetheoldlady B.setanexample C.talkaboutherillness D.leadinatopic 2WhichisTRUEaboutAsker'sSyndromeaccordingtothepassage? A.Itoftencausesproblemswithappetiteandfood. B.Olderwomendevelopmoreofitssymptoms. C.Morewomensufferfromitthanmenintheircareer. D.Womendenyaskingforwhattheywantbecausetheyaretoopolite. 3Thepassageiswrittento. A.listsymptomsofAsker'sSyndrome B.encouragewomentoexpresstheirdesires C.explainthecausesofrefusingtoask D.suggestwaystoaskformore
金属制品在曰常生活中应用广泛下列有关金属的性质描述正确的是
JohnSandwasoneofthemostinfluentialteachersIhaveevermet.Duringhighschoolhetaughtmemorethananyotherteacherhadbeenableto. Hedevelopedunusualmethodsofteaching.Hedidnotgiveushomeworkonthefirstdayandhaveitduethenext;insteadhegaveusahomeworkscheduleforthetermandleftituptoustoremembertodoit.Bydoingsohepreparedusforlifeafterhighschoolwhereitwouldbeuptoustomakeourownworkschedule. Mr.Sandwasafamilyman.Hemadeuseofwhatevertimewehadleftinclasstoshowushislatestvacationvideosorhischildren'ssportsvideos.Itwasnicetoseeamanwhobalancedhisfamilyandhiscareersonicelyinaworldwhereabrokenhomeistheaveragehome. Mr.Sandalwaysencouragedustogetoutofourlittleclose﹣mindedsocietyofWethersfieldandexploretheculturesoftheworld.HewouldtellusstoriesofhistravelsacrossEuropeandhisadventuresaroundtheUS.Manyteachersjustforcedtheideaofcollegeandignoredourneedtoreachoutsideofwhatweknow. ManypeoplemaynoteverhaveateacherlikeMr.Sand.Ifeelsorryforthem.Mr.Sandtaughtmethingsthatwentbeyondthecurriculum课程andletmeknowhowpowerfulateacher'sinfluencecouldbe. 1HowdidMr.Sanddealwithstudents'homework? A.Healwaysavoidedgivingit. B.Hepunishedthosefailingtofinishit. C.Hewantedstudentstoberesponsibleforit. D.Hespentenoughtimeeverydaycheckingit. 2WhatdoweknowaboutMr.HandfromParagraph3? A.Heonlyhadonechild. B.Hedidn'thaveagreatloveforlife. C.Helikeddoingsportsafterwork. D.Hevaluedhisjobaswellashisfamily. 3Mr.HandsharedhistoursaroundEuropewithhisstudentsto. A.leadthemtoknowmore B.encouragethemtobecomebrave C.inspirethemtocareforothers D.showthemhowtospendtheirfreetime 4Whatwouldbethebesttitleforthetext? A.TeachersIlikebest B.Anoutstandingteacher C.Teachingagreatcareer D.Howtobeacaringteacher
Itwas3:45inthemorningwhenthevotewasfinallytaken.Aftersixmonthsofarguingandfinal16hoursofhotparliamentarydebatesAustraliansNorthernTerritorybecamethefirstlegalauthorityintheworldtoallowdoctorstotakethelivesofincurablyillpatientswhowishtodie.Themeasurepassedbytheconvincingvoteof15to10.AlmostimmediatelywordflashedontheInternetandwaspickeduphalfaworldawaybyJohnHofsessexecutivedirectoroftheRighttoDieSocietyofCanada.Hesentitonviathegroup'son﹣lineserviceDeathNET.SaysHofsess:Wepostedbulletinsalldaylongbecauseofcoursethisisn'tjustsomethingthathappenedinAustralia.It'sworldhistory. Thefullimportmaytakeawhiletosinkin.TheNTRightsoftheTerminallyIlllawhasleftphysiciansandcitizensaliketryingtodealwithitsmoralandpracticalimplications.Somehavebreathedsighsofreliefothersincludingchurchesright﹣to﹣lifegroupsandtheAustralianMedicalAssociationbitterlyattackedthebillandthehasteofitspassage.Butthetideisunlikelytoturnback.InAustralia﹣whereanagingpopulationlife﹣extendingtechnologyandchangingcommunityattitudeshaveallplayedtheirpart﹣otherstatesaregoingtoconsidermakingasimilarlawtodealwitheuthanasia.IntheUSandCanadawheretheright﹣to﹣diemovementisgatheringstrengthobserversarewaitingforthedominoestostartfalling. UnderthenewNorthernTerritorylawanadultpatientcanrequestdeath﹣probablybyadeadlyinjectionorpill﹣toputanendtosuffering.Thepatientmustbediagnosedasterminallyillbytwodoctors.Afteracoolingoffperiodofsevendaysthepatientcansignacertificateofrequest.After48hoursthewishfordeathcanbemet.ForLloydNicksona54﹣year﹣oldDarwinresidentsufferingfromlungcancertheNTRightsofTerminallyIlllawmeanshecangetonwithlivingwithoutthehauntingfearofhissuffering:aterrifyingdeathfromhisbreathingcondition.I'mnotafraidofdyingfromaspiritualpointofviewbutwhatIwasafraidofwashowI'dgobecauseI'vewatchedpeopledieinthehospitalfightingforoxygenandclawingattheirmaskshesays. 1Fromthesecondparagraphwelearnthat. A.theobjectiontoeuthanasiaisslowtocomeinothercountries. B.physiciansandcitizenssharethesameviewoneuthanasia. C.changingtechnologyischieflyresponsibleforthehastypassageofthelaw. D.ittakestimetorealizethesignificanceofthelaw'spassage. 2Whentheauthorsaysthatobserversarewaitingforthedominoestostartfallinghemeans. A.observersaretakingawait﹣and﹣seeattitudetowardsthefutureofeuthanasia B.similarbillsarelikelytobepassedintheUSCanadaandothercountries C.observersarewaitingtoseetheresultofthegameofdominoes D.theeffect﹣takingprocessofthepassedbillmayfinallycometoastop 3WhenLloydNicksondieshewill. A.facehisdeathwithcalmcharacteristicofeuthanasia B.experiencethesufferingofalungcancerpatient C.haveanintensefearofterriblesuffering D.undergoacoolingoffperiodofsevendays 4Theauthor'sattitudetowardseuthanasiaseemstobethatof. A.opposition B.suspicion C.approval D.indifference
假设你是LiMing以下是你的南非笔友Seb发给你的一封电子邮件请根据该邮件内容给Seb回一封邮件. 要求:1.考生需按电子邮件格式完成整封邮件; 2.邮件中不能出现真实姓名校名等相关信息; 3.词数:90～100 ﹣﹣﹣﹣ ﹣﹣﹣﹣ ﹣﹣﹣﹣
某微粒的结构示意图为下列对该微粒化学式表达正确的是
下列关于溶液的说法错误的是
假如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的以下作文.文中共有10处错误涉及单词的增加删除或修改. 增加:在缺词处加一个漏词符号∧并在此符号下面写出该加的词. 删除:把多余的词用斜线\划掉. 修改:在错词下面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. Thepersonwhohastaughtmethemostaboutlifeismygrandmother.Shewasmorethanjustagrandmothertome.WhenshediedafewyearsbeforeIfeltIlostareallygoodfriend.Shealwayslookedveryniceonherage.Shedideverythingshecouldmakemefeelathome.Shewasimaginativeandwouldspendhourstellmestoriesshehasmadeup.IamsureitwasbecauseofherwhichIbecameastorywriter.Apartfromkeepingayoungboyentertainingshetaughtmealargenumberofimportantthingsonwhattobehave.IwasratherimpatientwhenIwasachildandshetaughtmethatgoodthingshappenedifIcouldwaitforthem.Shewasapositivepersonbutshealsotaughtmehowtolookforthegoodineverything.
苯酚C6H5OH是一种应用广泛的化工原料下列关于苯酚的说法不正确的是
古诗词是古人留给我们的宝贵的精神财富请按要求回答下列诗句中涉及到的化学知识 1赠别中写到“蜡烛有心还惜别替人垂泪到天明”涉及到的化学变化是． 2梅中写到“遥知不是雪唯有暗香来”请从微观角度解释该现象的原因． 3墨梅中赞赏文人画中的梅“不要人夸颜色好只留清气满乾坤”涉及了碳单质的请填字母序号． A．稳定性B．吸附性C．导电性D．还原性 4元日中“爆竹声中一岁除春风送暖入屠苏”诗句中涉及到的化学反应S+2KNO3+3CK2S+3CO2↑+X则X的化学式是．
ManypeoplegotoUtahbecausetheylovehikinginBryceCanyonNationalPark.Theyenjoy1岩石climbingcampingandsoon.HoweversomepeoplegotoUtahforavery2不同的experience. TheBoulderOutdoorSurvival生存SchoolBOSSinUtahistheworld'soldestsurvivalschool.Itteachespeoplehowtostayalivewithouttentsorevenbackpacks.InBryceCanyonthedaysarevery3热的andthenightsareverycold.Noteveryonewantstogoandexperiencelifewithoutmodern4发明likesmartphonesande﹣books.StudentsatBOSSquicklylearnthatitisimportanttoworkhardand5尝试newthingsiftheywanttocompletethetraining. InsurvivalcampsatBossstudentsdon'justpractisecampinghikingor6骑horses.Theygointothewildfordaysorweeks.Theylearnhowtofind7新鲜的waterfordrinking.Theyalsolearnhowtomakeafireusea8小刀andfindfoodtoeat.Naturecanoftengivethem9每件事theyneedtosurvive. Afterthesepeoplegobacktotherealworldtheymayneverusetheseskillsagain.Eveniftheydon'tat10至少theywillalwaysknowthattheycanlivewithoutcomputerselectricityandsmartphones﹣evenifitisonlyforafewdays!
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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
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