首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
分解因式：a3﹣4ab2＝ ．
查看本题答案
包含此试题的试卷
教案备课库《》真题及答案
点击查看
你可能感兴趣的试题
分解因式a3b﹣4a2b+4ab=.
分解因式ab4﹣4ab3+4ab2=.
分解因式a3-ab2=
分解因式a2b－4ab2＋3b3
分解因式a3﹣4ab2=
因式分解4ab2—4a2b—b3
分解因式9a3-4ab2=__________.
分解因式ab2﹣4ab+4a=______.
在实数范围内分解因式3a3-4ab2=__________.
分解因式6a2b﹣4a3b3﹣2ab
分解因式a3﹣4ab2
设ρ={A1A2A1A3}是关系RA1A2A3上的一个分解下表是R上的一个关系实例rR的函数依
F={A1→A2，A1→A3}
F={A1→A2}
F={A1→A2}
F={A1A3→A2，A1A2→A3}
因式分解ab2－4ab＋4a＝________.
因式分解:3a2b-4ab=.
分解因式a3b﹣4a2b+4ab=__________.
多项式4a﹣a3分解因式的结果是
a（4﹣a2）
a（2﹣a）（2+a）
a（a﹣2）（a+2）
a（2﹣a）2
因式分解a3﹣4ab2
因式分解a3－3a2b－4ab2＝
分解因式－4a3+16a2b－26ab2=_______.
分解因式a3﹣4ab2=__________.
热门试题
更多
Astrongmemorydependsonthehealthandvitality活力ofyourbrain.Theysaythatyoucan'tteachanolddognewtricksbutwhenitcomestothebrainscientistshavediscoveredthatthisoldsayingsimplyisn'ttrue.1 Giveyourbrainaworkout.Memorylikemuscularstrengthrequiresyoutouseitorloseit.Themoreyouworkoutyourbrainthebetteryou'llbeabletoprocessandrememberinformation.2 Don'tskipthephysicalexercise.Whilementalexerciseisimportantforbrainhealththatdoesn'tmeanyouneverneedtobreakasweat.Physicalexercisehelpsyourbrainstaysharp.Itincreasesoxygentoyourbrainandreducestheriskfordisordersthatleadtomemoryloss. Getenoughsleep.Thereisabigdifferencebetweentheamountofsleepyoucangetbyonandtheamountyouneedtofunctionatyourbest.3 Keepstressincheck.Stressisoneofthebrain'sworstenemies.Overtimestressdestroysbraincells.Studieshavealsolinkedstresstomemoryloss. Havealaugh.4Thatholdstrueforthebrainandthememoryaswellasthebody.Unlikeemotionalresponseswhicharelimitedtospecificareasofthebrainlaughterengagesmultipleregionsacrossthewholebrain. 5Justasthebodyneedsfuelsodoesthebrain.Youprobablyalreadyknowthatadietbasedonfruitsvegetableswholegrainshealthyfatsandleanproteinwillprovidelotsofhealthbenefitsbutsuchadietcanalsoimprovememory.Forbrainhealththoughit'snotjustwhatyoueat﹣it'salsowhatyoudon'teat. A.Eatabrain﹣boostingdiet. B.Playgameswithmemory. C.Laughteristhebestmedicine. D.Butoversleepingisnotgoodforyourbrain. E.Evenskippingafewhoursmakesadifference! F.Youhavetoshakethingsupfromtimetotime! G.Thehumanbrainhasanastonishingabilitytoadaptandchange.
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
Textingwhiledrivingisagainstthelawin47states.Butwhatabouttextingwhilewalking?A2018studyreportedthatmorethan2500peopleintheUSendedupinhospitalsresultingfromusingamobiledevice设备whilewalking. Hawaiipassedalawmakingitillegal违法的totextorlookdownatamobiledevicewhilecrossingthestreet.Itisthefirststatewithalawlikethis.Dopeoplethinkmoreplacesshouldacceptsuchalaw?TheLATimesdidasurvey.Herearesomerepliestheyreceived. 1Accordingtothepassageinitisagainstthelawifpeopletextwhilecrossingthestreet. A.Alaska B.California C.Hawaii D.NewYork 2TheLATimesdidthesurveymostprobablyto. A.wintheheartsofmorereaders B.encouragemorestatestopassthelaw C.askreadersiftheyagreewithtextingwhiledriving D.learnaboutpeople'sopinionsontextingwhilewalking 3InRena'sreplysheshowedthedangeroftextingwhilewalkingby. A.usingnumbers B.givingexamples C.askingquestions D.tellingstories 4WhichofthefollowingisAndrewBlack'sopinion? A.Textingismoreimportantthansafety. B.ThelawwouldhelptokeepAmericanssafe. C.It'seasytopleaseeveryonewhenpassingalaw. D.Whethertotextornotwhilewalkingispeople'sownchoice.
碳元素是一种平凡而神奇的元素以多种形式广泛存在于大气和地壳中能形成多种单质和千万种化合物是地球上一切生物有机体的骨架元素．请回答下列问题 1很多天然矿石中含有碳元素菱锰矿的主要成分是碳酸锰MnCO3其中锰元素的化合价是． 2石灰石是自然界中分布较广的物质请写出该物质主要成分阴离子的化学符号． 3化石燃料中也存在着大量的碳元素其中相对清洁的燃料的化学式为． 4在440℃和__条件下金属钠与二氧化碳反应能生成金刚石C和碳酸钠该反应的化学方程式为．
Sometimespeoplecomeintoyourlifeandyouknowrightawaythattheyaremeanttobethere.Theyservesomesortof1toteachyoualessonorhelp2whoyouareorwhoyouwanttobecome.Youneverknow3thesepeoplemaybe﹣﹣﹣yourroommateneighborprofessorlong﹣lostfriendloverorevenacomplete4butwhenyoulockyoureyeswiththemyouknowatthatverymomentthattheywill5yourlifeinsomedeepway. Andsometimesthingshappentoyouandtheymayseem6horribleandunfairatthetimebut7overcomingthesedifficultiesyouwouldhaveneverrealizedyourpotentialstrengthwillpowerorheart.Everythinghappensforan8.Nothinghappensbychanceor9goodorbadluck.Illnessinjurylovelostmomentsoftruegreatnessandstupidity﹣﹣﹣alloccurto10thelimitsofyoursoul.Withoutthesesmalltestslifewouldbelikeasmoothlypavedstraightflatroadtonowhere.Safeandcomfortablebutdulland11. Thepeopleyoumeetwhoaffectyourlifeandthesuccessand12youexperience﹣﹣﹣theyaretheonesthatcreatewhoyouare.Eventhe13experiencescanbelearnedfrom. Ifsomeonehurtsyoubetrays背叛youorbreaksyourheart14themfortheyhavehelpedyoulearnabout15andtheimportanceofbeing16aboutwhomyouopenyourheartto.Ifsomeonelovesyoulovethemback17notonlybecausetheyloveyoubutbecausetheyareteachingyoutoloveandopenyourheartandeyestothingsyouwouldhave18seenorfeltwithoutthem. Makeeveryday19.Appreciateeverymomentandtakefromiteverythingthatpossiblycanforyoumayneverbeabletoexperienceitagain. Peopleareliketeabags﹣﹣﹣youhavetoputtheminhotwaterbeforeyouknowhow20theyare. 1A.way B.plan C.purpose D.idea 2A.figureout B.giveout C.takeout D.sortout 3A.what B.who C.which D.where 4A.child B.teacher C.classmate D.stranger 5A.affect B.create C.design D.ruin 6A.important B.common C.painful D.practical 7A.after B.on C.by D.without 8A.change B.reason C.effect D.return 9A.bymeansof B.onbehalfof C.intermsof D.withregardto 10A.improve B.decrease C.test D.set 11A.meaningless B.rough C.changeable D.winding 12A.decisions B.failures C.achievements D.lessons 13A.unforgettable B.bad C.unusual D.interesting 14A.appreciate B.ignore C.desert D.forgive 15A.independence B.bravery C.trust D.selflessness 16A.enthusiastic B.cautious C.crazy D.worry 17A.unconsciously B.unconditionally C.carefully D.differently 18A.always B.never C.seldom D.sometimes 19A.count B.mind C.work D.vary 20A.expensive B.fresh C.precious D.strong
有机合成的出现是材料史上的一次重大突破．从此人类摆脱了依赖天然材料的历史．下列选项中不属于合成材料的是
短文中共有10处语言错误每句话最多两处错误.错误涉及一个单词的增加删除或修改. 增加:在此处加一个漏字符号∧并在其下面写出增加的词; 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其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处多者从十一处起不计分. Whatmakessmartlearners?Smartlearnersthinkeveryminuteimportantlyandmakefulluseofthem.Inclasstheyalwaysplaytheactiveroleandlistentoteacherscarefullyinordernotmissanykeyinformation.Afterclasstheykeepthehabitofreviewtheirlessonsanddoingtheirhomeworkcareful.Besidessmartlearnerslikediscussingaboutstudyproblemswithbothteachersandfriendssuchthattheycansolvethem.Ihopedallofuswillfindasuitablelearningmethodandhavealotoffunslearning.
WhilewaitingtopickupafriendattheairportIhadoneofthoselife﹣changingexperiences﹣thekindthatsneaksuponyou1. Inoticedamanwithtwobagsstoppedrightnexttometo2hisfamily.Firsthemotionedtohisyoungersonmaybesixyearsoldgivinghimalonglovinghug.Asthey3enoughtolookineachother'sfacethefathersaidSogoodtoseeyouson.Imissedyoumuch!SmilingthesonrepliedsoftlyMetooDad.ThenthemanstoodupgazedintheeyesofhisoldersonmaybenineortenYou'realreadyquitetheyoungman.Iloveyouverymuch.Theytoohuggedamostlovingtenderhug. Meanwhileababygirlperhapsoneyearoldwasexcitedinhermother'sarmsnevertakinghereyes4thewonderfulsightofher5father.ThemansaidHibabygirl!andgentlytookthechildfromhermother.Hekissedherfaceandheldherclosetohischestwhile6herfromsidetoside.AftermomentshehandedhertohisoldersonanddeclaredI've7thebestforlast!andproceededtogivehiswifethelongestandmostpassionatekiss. Thentheystaredateachother'seyes8.Foraninstantthey9meofnewlyweds新婚butIknew10theageoftheirkidsthattheycouldnotpossiblybe.Ipuzzledaboutitforamomentandthenrealizedhowtotally11Iwasinthewonderfullydisplayofunconditionallove.Isuddenlyfelt12asifIwasinvadingsomething13butwasamazedtohearmyownvoicenervouslyaskedWow!Howlonghaveyoubeenmarried? Beentogetherfourteenyearstotalmarriedtwelveofthose.herepliedstaringather. Thenhowlonghaveyoubeenaway?Iasked.ThemanfinallyturnedtomesayingTwowholedays. Iwas14.BytheirgreetingIhadassumedhe'dbeengonefor15afewweeks﹣ifnotmonths.Iknowmyexpression16me.Toeasethe17IsaidIhopemymarriageisstillthatpassionateaftertwelveyears.Hesuddenlystoppedsmilinglookedmestraightintheeyeandsaidsomethingthat18meanotherperson. Don'thopefriend…decide!thenheflashedmewithhiswonderfulsmileagain. Iwasstillwatchingthatexceptionalmanandhisfamilywalkoutof19whenmyfriendcameuptomeandaskedWhatareyoulookingat? Withouthesitatingandwithacurioussenseof20IrepliedMyfuture! 1A.attackingly B.unfortunately C.unexpectedly D.immediately 2A.greet B.Pickup C.accept D.send 3A.loved B.separated C.left D.walked 4A.off B.from C.Outof D.away 5A.interesting B.laughing C.returning D.kissing 6A.rocking B.shaking C.moving D.walking 7A.had B.left C.saved D.bought 8A.sobbing B.laughing C.smiling D.crying 9A.made B.told C.informed D.reminded 10A.of B.by C.about D.to 11A.absorbed B.involved C.strange D.silly 12A.unkind B.friendly C.responsible D.uncomfortable 13A.sacred B.mysterious C.strange D.classified 14A.apologetic B.stunned C.defeated D.sorry 15A.atmost B.shortly C.atleast D.atbest 16A.betrayed B.shocked C.turned D.laughedat 17A.excuse B.fact C.fault D.embarrassment 18A.found B.left C.kept D.showed 19A.room B.town C.love D.sight 20A.sadness B.certainty C.happiness D.disappointment
WorldBookDay1fallonApril23everyyear.ItwassetupbytheUNESCO联合国教科文组织in1955toencouragepeopletodiscoverthepleasureofreading.Itmeansyoureadabooknotbecauseyourteachersorparentstellyoutodoso.2readforpleasureplaysamoreimportantroleinone's3growthanone'sfamilybackground. Booksmagazinesnewspapersandotherkindsofmaterialscanhelpusknowmoreabouttheoutsideworldandperfectus.4computergamesonlinevideosandInterestarepushingbooksofftheshelf.Someexpertsbelieveit'sa5worrytrend.EachChineseread0.38morebooksin2013than2012butstillfarfewerthanthoseinmajordevelopedcountries.Evenworsemanybookstores6closetheirdoorsbecausemanybookloversstarttobuy7fewbooksthanbefore. Howevermanypeopledostillpreferreadingbecauseithas8bepartoftheirlife.Itcanbenefitpeopleinmanyways.Itgivesusinformationaboutothercountriesandplacesoftheworld.It9hasastronginfluenceonformingourpersonalityandmakesusmoreintelligent.It's10toolatetostartreading.Sojumpintothewonderfulworldofboosnow!
SuHuaisstudyingatCambridgeUK.Shehasboughtabicycleandisworriedaboutsecurity安全.HerfriendKatefoundthisarticleandsentittoher. 1Whichpartofthetextgivesyouinformationonhowtolockupyourbicyclewhenyouleaveit? A.Locks. B.Marking. C.Registration. D.BasicSecurity. 2Theunderlinedphraseactasadeterrenttoathiefmeans. A.helpyourecognizeyourbike B.helpthepolicefindyourbicycle C.stopsomeonestealingyourbicycle D.stopyouworryingaboutyourbike 3Themainpurposeofthisarticleis. A.totellyouwhattodoifyourbicycleisstolen B.tosuggestwaysofkeepingyourbicyclesafe C.togiveyouadviceonwheretobuyagoodlock D.tosaywhyyoushouldn'tkeepyourbicycleinaquietplace
Careersuccesscouldbepredictedasearlyaskindergartenaccordingtoa20﹣yearstudyrecentlypublishedintheAmericanJournalofPublicHealth. ResearchersfromPennsylvaniaStateUniversityandDukeUniversitytrackedmorethan700childrenfromacrosstheUSbetweenkindergartenandage25andfoundasignificantcorrelationbetweentheirsocialskillsaskindergartnersandtheirsuccessasadultstwodecadeslater. In1991teachersassessedhowthekindergartnersinteractedwitheachothersociallyusingarangeofcriterialikewhethertheycooperatewiththeirpeerswithoutprompting激励ifthey'rehelpfultootherswhetherthey'regoodatunderstandingfeelingsandiftheycansolveproblemsontheirown. Researchersthenkepttrackofwhetherthestudentswentontograduatehighschoolontimegetacollegedegreeandfindandkeepafull﹣timejobby25.Theyalsomonitoredtheparticipants'involvementwithcrimedrugabusepublicassistanceandmentalhealthissues. Theresultsshowedthatsociallycompetentchildrenwerefarmorelikelytoearnacollegedegreeandhaveafull﹣timejobby25thanthosewithlimitedsocialskills.Thosewithlimitedsocialskillsalsohadahigherchanceofgettingarrestedbinge放纵drinkingandapplyingforpublichousing. ThisstudyshowsthathelpingchildrendevelopsocialandemotionalskillsisoneofthemostimportantthingswecandotopreparethemforahealthyfuturesaidKristinSchubertprogramdirectorattheRobertWoodJohnsonFoundationwhichfundedtheresearchinarelease. Fromanearlyagetheseskillscandeterminewhetherachildgoestocollegeorprisonandwhethertheyendupemployedoraddicted.ThegoodnewsaccordingtoDamonJonesleadauthorofthestudyisthatintervention干预atayoungagecanhelpimprovesocialandemotionalskills. Thisresearchbyitselfdoesn'tprovethathighersocialcompetencecanleadtobetteroutcomeslateronhesaid.Butwhencombinedwithotherresearchitisclearthathelpingchildrendeveloptheseskillsincreasestheirchancesofsuccessinschoolworkandlife. 1Whathasthe20﹣yearstudyfound? A.Mostkindergartnerscansolveproblemsalone. B.Helpfulchildrenunderstandother'sfeelingbetter. C.Outgoingchildrencooperatewiththeirpeerseasily. D.Socialskillsplayakeyroleinchildren'sdevelopment. 2Paragraph3and4aremainlyabout? A.whentheresearchersbegantheirstudy B.howlongittooktocompletethestudy C.howtheresearchersconductedthestudy D.whatfactorswerestudiedbytheexperts 3WhatshouldparentsdotohelptheirchildrentosucceedaccordingtoKristinSchubert? A.Teachthemhowtocooperatewithothers. B.Teachthemsomebasiclivingskills. C.Tellthemtokeepoffalcohol D.Coachthemintheirlessons. 4Thetextmakesverygoodsenseto. A.teenagers B.educators C.doctors D.generalreaders
随着电脑越来越多地进入我们的生活它给我们带来了方便但不当的使用也影响着我们的身体健康.请根据下面所给要点用英文写一篇短文简要说明电脑对人体健康的不利影响并提出改善建议. 1.长时间用电脑损害眼睛影响视力. 2.对电脑的过多依赖造成记忆力减退. 3.电脑前久坐容易引发腰背不适肥胖等症装. 注意: 1.词数100左右;开头已经为你写好不计入总词数. 2.可根据内容适当增加细节以使行文连贯. Ascomputersarebeingusedmoreandmorewidelyinourlifetheyhavebroughtusalotofconvenience.
MadeinChinaishavingitsmomentnow﹣andit'safashionableone. ThestoryofChinesefashionbeganin2011whenFeiyueandHuilibothChinesesportsshoebrands品牌suddenlygotinternationalattention.Theirproductswereseenallovertheworld.ChinesesportswearbrandLiNingwasattheNewYorkFashionWeekinSeptember2018.Theyshowedtheirnewdesigns﹣sweatersandjacketswithChinesecharacters. ShaunReinmanagingdirectorofChinaMarketResearchGroupsaidthatthelatestChinesebrandsnolongercatchcustomers'eyebylowprice.HetoldCNNTheyaresurethattheycangoheadtoheadwithforeignbrands. MaybeitisbecauseChina'syoungpeoplearenowmoreconfidentabouttheirownculture.Theydon'tshowimmediateinterestinwesterncultureanymore. Today'syoungpeopleinChinaarecrazyaboutChineseculturalelements元素.JinQuthemanagerofaclothingshoppingwebsitesaidataculturalfestivalin2018.TheyliketheseelementsprintedontheirclotheseventhebrandpictureofLaoganmainChinawhichwasonceseenasoutsideoffashion.ButnowyoungpeopleareproudoftheseChinesesymbols. InfactmanystarsintheWestarenowinterestedinChineseculturalelementsinfashion.RihannaaUSsingerforexampleworeaChinesereddresstothe2015MetGalainNewYork.ThedresswasdesignedandmadebyChinesedesignerGuoPei. WehavetomovefrommakingtocreatingChinese﹣AmericandesignerAricChenoncetoldTheNewYorkTimes.Wewanttoreplacethewords‘MadeinChina'with‘DesignedinChina'. 1ThenewdesignsofLiNingCompanyinSeptember2018were. A.coatsandscarvesinChinesered B.sweatersandjacketswithEnglishwords C.coatsandscarveswithAmericansymbols D.sweatersandjacketswithChinesecharacters 2TheunderlinedwordTheyinParagraph5refersto. A.Today'syoungpeopleinChina B.TheworkersinJinQu'sshop C.SomefamousstarsintheWest D.DirectorsofsomeChinesecompanies 3Whatcanbethebesttitleforthepassage? A.ChineseClothesBrands B.SportsinChina C.ChineseCulturalFestival D.DesignedinChina 4Thepassageabovemaybetakenfroman. A.newspaper B.guidebook C.novel D.ad
OneSundaymyfamilyhadgatheredatmyparents'housetofeastuponMom'swonderfulcooking.DuringthenormaldinnerchatterInoticedthatmyfatherwasslurring说话含混hiswords.NoonementionedthisduringdinnerbutIfeltcompelledtodiscussitwithmymotherafterward. WedecidedthattherewassomethingseriouslywrongandthatDadneededtoseethedoctor. Momphonedmetwodayslater.Thedoctorfoundabraintumor肿瘤.It'stoolargeatthispointtooperate.Maybetheycandosomethingthenbuttheoddsarelong. Evenwiththetreatmentmyfather'sconditionworsenedandthedoctorfinallyinformedusthatthisconditionwasterminal.DuringoneofhisstaysinthehospitalwebroughtourbabydaughterChelseywithuswhenwevisitedhim.Bythistimehehadgreatdifficultyspeaking.IfinallyfiguredoutthathewantedChelseytositonhisstomachsohecouldmakefacesather. WatchingthetwoofthemtogetherIrealizedIwaslivinganexperiencethatwouldstaywithmeforever.ThoughgratefulforthetimestheycouldshareIcouldn'tshakethefeelingofaclocktickinginthebackground. Onthevisittomyparents'homeduringwhatweallknowwasmyfather'slastdaysmymothertookChelseyfrommyarmsandannouncedYourfatherwouldliketoseeyoualoneforaminute. Ienteredthebedroomwheremyfatherlayonarentedhospitalbed.Heappearedevenweakerthanthedaybefore. HowareyoufeelingDad?Iasked.CanIdoanythingforyou? Hetriedtospeakbuthecouldn'tmakeoutaword. I'msorrybutIcan'tunderstandyouIsaid. WithgreatdifficultyhesaidIloveyou. Wedon'tlearncouragefromheroesontheeveningnews.Welearntruecouragefromwatchingordinarypeopleriseabovehopelesssituations.Inmanywaysmyfatherwasastrictuncommunicativeman.Hefounditdifficulttoshowemotion.ThebravestthingIeversawhimdowasovercomethatbarriertoopenhishearttohissonandfamilyattheendofhislife. 1WhichofthefollowingstatementsisTRUE? A.Thewriteraccompaniedhisfathertoamedicalexamination. B.Thewriter'sfathergotworseaftertheremovalofthebraintumor. C.Thewriter'sfatherhadknownabouthisillnessbeforethewriterdiscoveredit. D.Thewriterwasquicktonoticethestrangeconditionofhisfather. 2Whatdoestheunderlinedsentencetheoddsarelongmean? A.IttakesalongtimeforFathertorecover. B.There'slittlepossibilityforFathertorecover. C.Fatherneedsloveandcarefromhisfamily. D.TheyneedapropertimetooperateonFather. 3ThefatherhadneversaidIloveyoutothewriterbeforebecause. A.hewasnotusedtoopenlyshowinghisemotions B.hewasnotsoattachedtothewriter C.hethoughttherewasnoneedtotellthewriter D.hebelievedinstrictnessandpunishment 4Whatdoesthewriterattempttotellus? A.Lifeisshortsoliveyourlifetothefullest. B.Don'twaittoseeadoctortillitistoolate. C.Bravelyexpressyourloveforyourfamily. D.Wedon'toftenvaluehealthuntilweloseit.
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.
Istheresuchathingasbeingover﹣protective? Icanhonestlysaythatmyanswertothatquestion1changedramatically戏剧性地sinceIbecameaparent. BeforethebirthofmydaughterItaughtat2privateschooloftenviewingmystudentsasover﹣protectedworrying3wouldhappenwhentheywentontomiddleschools. Somedidfineandsomedidnot.Someneededconstantpatsonthebackwordsof4encourageandextrasupportwhichI5happygave.Otherswerecontentontheirownneedinglittleornointeraction互动withtheirteacher.6forthemostpartgraduateswouldgoonforhigherschooling. I'dalwayssupposedtheirparentswereover﹣protectivefortheyweretheonesthatstillwalkedtheir7fivegradersintotheclassroomandmetthemattheschoolgate. AdmittedlyIlaughedatthoseparents8thinktheirchildrenwouldneverlearntobe9independenceiftheydidn'tletgojustalittle.ThenIhadmyowndaughter.ThemomentIlookedatherlittlefaceI10knowI'ddoeveythinginmypowertoprotectherandmakesureshealwaysfeltsafe!
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%．
IfyouliveinTokyoorTorontoyouneedawarmcoatinthewinter.1Theaimofadvertisingistochangeourideasaboutthingswewantandneed. Someadsfordesignerproductsusepeople'svanity虚荣心toselltheproduct.Theadstrytocreateapersonalityforeachbrand.Forexampleonebrandofwatchesisforpeoplewholikeadventurewithadsfeaturinganautoracerorapilotwearingthem.Anotherbrandofwatchesisforelegantandfashionablepeopleandtheadsshowwealthytravelersonacruiseship.Thewatcheslookalmostthesame﹣onlytheirimagesaredifferent.Whenyoubuythatbrandofwatchyouarebuyingtheimage.2 Manyadsusepeople'semotionstopersuadeusthatweneedtheproduct.ThinkofaTVcommercialthatshowsawomanoutdrivinginacaronarainydaywithhertwosmallchildren.Suddenlyanothercarturnsinfrontofher.Themotherquicklyhitthebrakesandhercarcomestoastop.Thechildrenarestillsmilingandlaughing.Themessageis:Thiscarwillkeepyousafe.3Otherexamplesareslogansthattellyoutotakevitaminstopreventheartdiseaseorbuyinsurance﹣protectyourfamily. Commercialsforsoftdrinksoftenshowpeoplehavingapartyplayingsportsorenjoyingadayatthebeach:Everyoneintheadishavingagoodtime.Themessageis:Ifyoubuythisdrinkyouwillhaveagoodtimetoo.Manyadslikethisarebasedonpeople'sdesireforfunandenjoyment. 4Psychologistshavefoundthatpeoplehavepositivefeelingsaboutthingstheyseemoreoftensothesameadisusedforalongtimebeforeitisreplacedwithanewad.OtherstudiesfoundthatpeoplereactbettertoanadwhenitisfreshintheirmemorysoTVadsarerepeatedveryoften. Knowingaboutpsychologyinadvertisingletsusmakebetterdecisionsaboutthethingswebuy.5 A.Advertisementslikethisoneusefeartosellproducts. B.Butyouwantonethatisshortorblackorhasadesignerbrand. C.YouhavetobecarefulnottobefooledbytheadsontheInternet. D.Butthechildrenmaynotrealizethatwhattheyareviewingisunreal. E.Thisisthereasonthatpeoplespendmuchmoremoneyforaproduct. F.Afteranadispreparedadvertisersusepsychologytomakeitmoreeffective. G.Ithelpsusknowthedifferencebetweenwhatwewantandwhatwereallyneed.
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 ﹣﹣﹣﹣ ﹣﹣﹣﹣ ﹣﹣﹣﹣
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!
热门题库
更多
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
教案备课库
高一下学期数学
教案备课库
高一上学期数学
高一上学期化学
教案备课库
教案备课库
湘公网安备 43130202000226号