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一容积不变的热气球刚好要离开地面时，球内空气质量m0＝15kg，温度T1＝280K，在热气球下方开口处燃烧液化气，使球内温度缓慢升高热气球缓慢升空，当气球内空气温度T2＝300K时，热气球上升到离地...
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高三下学期物理《》真题及答案
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总质量为M.的热气球由于故障在高空以速度v竖直匀速下降在t=0时刻从热气球中释放一个质量为m的沙袋不
如图所示总质量为460kg的热气球从地面刚开始竖直上升时的加速度为0.5m/s2当热气球上升到175
总质量为M的热气球由于故障在空中以匀速v竖直下落在t=0时刻从热气球中释放了一个质量为m的沙袋不计空
如图所示总质量为460kg的热气球从地面刚开始竖直上升时的加速度为0.5m/s2当热气球上升到180
所受浮力大小为4 830N
加速上升过程中所受空气阻力保持不变
从地面开始上升10 s后的速度大小为5m/s
以5m/s匀速上升时所受空气阻力大小为230N.
如图所示总质量为460kg的热气球从地面刚开始竖直上升时的加速度为0.5m/s2当热气球上升到180
所受浮力大小为4830 N
加速上升过程中所受空气阻力保持不变
从地面开始上升10 s后的速度大小为5 m/s
以5 m/s匀速上升时所受空气阻力大小为230N.
如图所示总质量为460kg的热气球从地面刚开始竖直上升时的加速度为0.5m/s2当热气球上升到180
所受浮力大小为4 830N.
加速上升过程中所受空气阻力保持不变
从地面开始上升10 s后的速度大小为5 m/s
以5 m/s匀速上升时所受空气阻力大小为230N.
如图所示总质量为460kg的热气球从地面刚开始竖直上升时的加速度为0.5m/s2当热气球上升到180
所受浮力大小为4 830N.
加速上升过程中所受空气阻力保持不变
从地面开始上升10 s后的速度大小为5 m/s
以5 m/s的速度匀速上升时所受空气阻力大小为230N.
总质量为M.的热气球由于故障在高空以速度v匀速竖直下降为了阻止继续下降在t=0时刻从热气球中释放了一
1热气球是利用球内的热空气比球外的冷空气的密度要而能够上升的当热气球的体积增大时则球内的气体质量密度
热气球是利用球内的热空气比球外的冷空气的密度要而能够上升的当热气球的体积增大时则球内的气体质量密度
热气球由球囊吊篮和加热装置三部分构成.当气球下方的燃烧器点燃时产生2～3米高的火焰由鼓风机将热风吹入
一热气球体积为V.内部充有温度为Ta的热空气气球外冷空气的温度为Tb已知空气在1个大气压温度为T.0
一容积不变的热气球刚好要离开地面时球内空气质量m0＝15kg温度T1＝280K在热气球下方开口处燃
如图9所示总质量为460kg的热气球从地面刚开始竖直上升时的加速度为0.5m/s2当热气球上升到18
所受浮力大小为4 830N.
加速上升过程中所受空气阻力保持不变
从地面开始上升10 s后的速度大小为5 m/s
以5 m/s匀速上升时所受空气阻力大小为230N.
如图所示有一热气球球的下端有一小口使球内外的空气可以流通以保持球内外压强相等球内有温度调节器以便调节
如图所示总质量为460kg的热气球从地面刚开始竖直上升时的加速度为0.5m/s2当热气球上升到18
为了迎接黄石市第二届矿冶文化节和第三届国际乒乓节某庆典公司正在调试载入热气球已知载入热气球球内热气的
如图所示总质量为460kg的热气球从地面刚开始竖直上升时的加速度为0.5m/s2当热气球上升到180
所受浮力大小为4830N
加速上升过程中所受空气阻力保持不变
从地面开始上升10s后的速度大小为5m/s
以5m/s匀速上升时所受空气阻力大小为230N
总质量为M.的热气球由于故障在高空以匀速v竖直下降为了阻止继续下降在t＝0时刻从热气球中释放了一个质
总质量为M.的热气球由于故障在空中以速度v0匀速下降.为了阻止继续下降在t=0时刻从热气球中释放了一
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Youmayhavegrownuplivingwithsistersandbrothersorthismaybeyourfirsttimesharingyourlivingspacewithsomeoneelse.1Howeveritcanalsobeagreatpartofyourcollegeexperience.Followthesetipstomakesureyouandyourroommatekeepthingspleasantandsupportivethroughouttheyear. Beclearfromthebeginning. Maybeyouhateitwhensomeoneinterruptsyouwhenyouaresleepingeverymorning.Maybeyouneedtenminutestoyourselfbeforetalkingtoanyoneafteryouwakeup.2It'snotfairtoexpecthimorhertopickuponthemrightawayandcommunicatingwhatyouneedisoneofthebestwaystogetridofproblemsbeforetheybecomeproblems. 3 Thismayseemsimplebutit'sprobablyoneofthebiggestreasonswhyroommatesexperienceconflicts.Don'tyouthinkhe'llmindifyouborrowhisshoesforaquicksoccergame?Forallyouknowyoujuststeppedoveranuncrossableline.Don'tborrowuseortakeanythingwithoutgettingpermissionfirst. Beopentochange. Youshouldexpecttolearnandgrowandchangeduringyourtimeatschool.4Asthetermprogressesrealizethingswillchangeforbothofyou.Becomfortableaddressingthingsthatunexpectedlycomeupsettingnewrulesandbeingflexibletoyourchangingenvironment. FollowtheGoldenRule. 5Nomatterwhatyourrelationshipisattheendoftheyearyoucantakecomfortknowingyouactedlikeanadultandtreatedyourroommatewithrespect.
圆ρ＝5cosθ﹣5sinθ的圆心坐标是
Homelessnessisabigproblemacrosstheworld.Manypeopleandorganizationsareworkingtosolveit.MelYoungfromScotlandandHaraldSchmiedfromAustriaaretwosuchpeople.In2001thetwomenattendedaninternationalconferenceabouttheproblemofhomelessness.Latertheybegantowonderiffootballcouldhelpsolvetheproblem.In2003theydecidedtostarttheHomelessWorldCuporganization.Itchoosesandtrainslocalhomelesspeoplefortheyearlyfootballcompetition.Todayabout500peoplefromalmost50countriesplayintheHomelessWorldCup.Andtheprogramischanginglives. DamienisfromIreland.Formanyyearshestruggledwithdrug毒品addiction.Butin2006heplayedforIreland'sHomelessWorldCupteamandsincethenhehasbeendrugfree! ManyoftheHomelessWordCupplayerslikeDamienhavestruggledwithdrugaddiction.Howeversomeplayersarehomelessbecauseofpoverty.Alexisoneofthem.HesaysIwasborninMatharethebiggestworstslum贫民窟inKenya.Icouldnotfindanythingtoeat.Alsoschoolingwasaproblem.MylifestartedwhenIstartedplayingfootball.FootballgaveAlexjoy.Ittaughthimtoworkhardandhelpedhimbelievethathecouldachievesomething. Footballcanevenhelppeoplewhohaveexperiencedextremetragedy.NajibayoungmanfromAfghanistanhaslivedthroughmuchwar.Manyofhisfamilymembershavedied.Butfootballhashelpedhimsurvive.ItisonlyduringthegamesthatIdonotthinkaboutmysituation.I'mnotinterestedinanythingotherthanfootballandit'stheonlythingIdesireNajibexplains. Drugspovertyandwararecommoncausesofhomelessness.Playinginafootballcompetitionmaynotdirectlytreatdrugaddictionsolvepovertyorendwarbutitcangivepeopleemotionalstrengthandhelpthemlearnimportantlifeskills. 1WhatdoweknowabouttheHomelessWorldCup? A.Itisheldeveryyear. B.Itfirsttookplacein2001. C.Itistheideaoftwotroubledfootballlovers. D.Itwasintroducedataninternationalconference. 2AfterplayingintheHomelessWorldCupAlex. A.gaveuptakingdrugs B.begantolivearichlife C.gotagoodschooleducation D.becameconfidentaboutthefuture 3WhatdoestheunderlinedworddesireinParagraph4probablymean? A.Remember B.Watch C.Want D.Create 4Whatwouldbethebesttitleforthistext? A.Footballforeveryone B.Lasthopeforthehomeless C.Endhomelessnessfromnowon D.Beathomelessnessthroughfootball
7.5分VisitorstoBritainmayfindthebestplacetosamplelocalcultureisinatraditionalpub.Butthesefriendlypubscanbedangerousplacesofpotentialgaffes失礼forthenewcomers. AteamofresearchershavediscoveredsomeoftheunknowncustomsofBritishpub﹣startingwiththedifficultyofgettingadrink.Mostpubshavenowaiters﹣youhavetogotothebartobuydrinks.AgroupofItalianyouthswaiting45minutesbeforetheyrealizedtheywouldhavetofetchtheirown.Thismaysoundinconvenientbutthereisahiddenpurpose. Pubcultureisdesignedtopromotesociabilityinasocietyknownforitsreserve.Standingatthebarforserviceallowsyoutochatwithotherswaitingtobeserved.ThebarcounterispossiblytheonlysiteintheBritishIslesinwhichfriendlyconversationwithstrangersisconsideredentirelysuitableandreallyquitenormalbehavior.Ifyouhaven'tbeentoapubyouhaven'tbeentoBritain.ThistipcanbefoundinabookletPassporttothePubTheTourists'GuidetoPubEtiquetteacustomers'ruleofconductforthosewantingtosampleacentralpartofBritishlifeandculture. Thetroubleisthatifyoudonotfollowthelocalrulestheexperiencemayfallflat.Forexampleifyouareinabiggroupitisbestifonlyoneortwopeoplegotobuythedrinks.Nothingannoystheregularcustomersandbarstaffmorethanagroupofstrangersblockingallaccesstothebarwhiletheychatandhesitateaboutwhattoorder. 1Theunderlinedwordsampleinthefirstparagraphprobablymeans. A.taste B.experience C.test D.record 2ThecultureofpubinBritainissodevelopedto. A.encouragepeopletocommunicatewitheachother B.encouragemorepeopletoconsumedrinks C.attractmoretouriststothepubs D.formitsowncharacterofculture 3WhatdoestheauthormeanbygivingtheexampleofagroupofItalianyouthsinParagraph2? A.Britishpubsdon'talwayshavewaitersorwaitresses. B.ThereisalwaysahiddenpurposeinmostBritishpubs. C.ItisquiteconvenientforpeopletogetadrinkinBritishpubs. D.NotknowingthecustomofBritishpubsmaycauseinconvenience.
如图若点P在反比例函数y=x＜0的图象上过点P作PM⊥y轴于点MN为x轴上一点若△PNM的面积为3则k=
Assoonaswewentaourshiplefttheport.
Mostpeopleagreethatapetaddsjoytoaperson'slife.Scientistsarenowfindingthathavingapetmaykeepitsowner1.Andgoodhealthmayaddyearstoaperson'slife. Scientistshavebeen2thelinkbetweenpetsandhealthforyears.In1990astudywasdonewithpeopleaged65andolder.It3thatpetownerswenttothedoctorlessthanpeople4pets.Dopetsmakepeople5?Arepeopleabletohandletheireverydaylivesbetter?AlanBeckwhoisaresearchersaysthat6theanswertothequestionsisyesthenhavingpetsmaybeagoodidea. Canpetsalsohelppeoplelivelonger?RebeccaJohnsondidastudyto7.Johnsonteachesnurseshowtocarefor8people.Herstudyshowsthathavingpetsmaycausepeopleto9moreslowly. Thehumanbodymakesmanychemicals.Someofthechemicalsmakepeoplefeel10.Othersmakepeoplefeelbad.InJohnson's11levelsofthegoodchemicals12whenpeoplewerearoundpetswhilelevelsofthebadchemicalswentdown.Thegood13seemedtoslowtheagingofcells.Ifthisis14maybepeopleshouldspendmoretimewiththeir15.Thenpeoplemightfeelbetterand16longer. Youmightbeallergic过敏的topets.Oryoumaynotwantto17apet.Neverfear.Aroboticorcomputerpetmaybejustthethingforyou. ScientistsaretestingcomputerpetsliketheroboticdogAIBO.Theywanttoseeif18petscanhelppeopletheway19dogsdo. Willaroboticpet20therealpetsittingwithyouonthesofa?Somethingtellsusthatitwillprobablybecomeareality. 1A.healthy B.excited C.mad D.hurried 2A.carryingout B.makingup C.lookingat D.breakingdown 3A.warned B.showed C.reminded D.advised 4A.through B.beyond C.against D.without 5A.busier B.funnier C.happier D.angrier 6A.though B.until C.if D.unless 7A.findout B.putout C.turnout D.setout 8A.sick B.friendly C.old D.lovely 9A.age B.move C.walk D.grow 10A.bored B.surprised C.sleepy D.good 11A.study B.work C.story D.case 12A.changed B.varied C.fell D.rose 13A.sides B.chemicals C.studies D.dogs 14A.important B.unusual C.true D.impossible 15A.children B.pets C.friends D.neighbors 16A.live B.wander C.stay D.travel 17A.headfor B.searchfor C.cheerfor D.carefor 18A.family B.computer C.baby D.toy 19A.brave B.quiet C.faithful D.real 20A.destroy B.replace C.improve D.accompany
7.5分GivenachoicewouldThreeLittleRobotsbeingchasedbyabigbadwolfAbuildsuccessivelymorewolf﹣resistanthousesorBkillthewolfwiththeirnailgun?IfyouchoseByouareprobablyarobotwhohasn'tyetmetQuixotealearningsystemthatteachesrobotshownottokillbyusingfairytales. WhileStephenHawkingElonMuskandBillGatestrytoscareuswithtalesofrobotskillinghumansateamofresearchersatGeorgiaInstituteofTechnologyisscaringrobotsbyusingfairytalestoteachthemhowtomakeproperdecisionswhenfacedwithreal﹣worlddilemmaswhilelackingamoral道德的compass.Theysuggestrobotscanbetaughtmoralbehaviorusingbooks.Readingfairytalesorstoriescanhelpthemlearnwhatisgoodandbadandhowtobehavewellinasociety. Fables寓言fromvariousculturescanprovideartificialintelligencewithsocialskillsandrolemodelsessentialtothepeacefulcoexistenceofmenandrobotsscientistatGeorgiaInstituteofTechnologyclaiminanewstudy. Accordingtoresearcherstomakearobotunderstandtheactionsofahumanitmustfirstturnedthemorallessonscontainedinfablesintoaspeciallydesignedarchitectureofareasoningcompatiblewithartificialintelligence. AnearlyexampleofthisreasoningisasystemcalledQuixotenamedfortheleadingcharacterofMigueldeCervantes'classicnovel.Quixoteusesfableplotstogivemachineintelligenceguidanceformoralproblem﹣solvinganddependingonwhatdeedscharactersengageinthesystemsendseitherrewardorpunishmentsignalscausingrobotstoactmorehumanelyresearcherssuggest. ThefunctionofQuixoteisdependentuponanothersystemcalledScheherazadeapreviousprojectstartedbythesameteam.ScheherazadecollectsdifferentstoryplotsfromInternetanddevelopsinteractivestories.Thosestoriesarethenturnedintodecisionflow﹣chartsprovidingahugenumberofbranchingpathsfollowingeverysteptaken. Quixoteisintheearlydevelopmentstageaccordingtoresearchersnotingthatitworkscurrentlywithrobotsthatinteractwithhumansinonlyaverysmallrangeoffunction. 1Whatcanweinferfromparagraph1? A.Robotsareafraidofwolves. B.Robotsarefondoffairytales. C.Robotsareadvancing. D.Robotsareconstantlygivenchoices. 2Whatshouldprobablyhappenifatestedrobotchosetocutinlineinpublicplaces? A.ItwouldbepunishedbyScheherazade. B.Itwouldapologize. C.Itwouldreasonwithhumanbeings. D.Itwouldberebuilt. 3WhichofthefollowingbestdescribethefunctionofQuixote? A.QuixotemakesfablesmeaningfultoA.L. B.Quixotegivesrobotsintelligence. C.QuixotecollectsstoriesfromInternet. D.Quixoteisanindependentsystem.
雷达图RadarChart又可称为戴布拉图蜘蛛网图SpiderChart是财务分析报表的一种现可用于对研究对象的多维分析如图为甲乙两人五个方面的数据雷达图则下列说法不正确的是
MyparentsdivorcedwhenIwas5makingmymotherasingleparent.Wehadlittlemoneybutmymomgavemealotoflove.EachnightshesatmeonherlapandspokethewordsthatwouldchangemylifeKemmonsyouarecertaintobeagreatmanandyoucandoanythinginlifeifyouworkhardenoughtogetit. AtfourteenIwashitbyacarandthedoctorssaidIwouldneverwalkagain.EverydaymymotherspoketomeinhergentlelovingvoicetellingmethatnomatterwhatthosedoctorssaidIcouldwalkagainifIwantedtobadlyenough.ShedrovethatmessagesodeepintomyheartthatIfinallybelievedher.AyearlaterIreturnedtoschool﹣walkingonmyown! WhentheGreatDepression大萧条occurredmymomlostherjob.ThenIleftschooltosupportthefamily.AtthatmomentIwasdeterminednevertobepooragain. MyrealchangeoccurredonavacationItookwithmywifeandfivekidsin1951.Iwasangrythatthesecondclasshotelchargedanextraforeachchild.ThatwastooexpensivefortheaverageAmericanfamily.Idecidedtoopenamotel汽车旅馆forfamiliesthatwouldneverchargeextraforchildren.Therewereplentyofdoubtersatthattime. Notsurprisinglymotherwasoneofmystrongestsupporters.Weexperiencedalotofchallenges.Butwithmymother'swordsdeeplyrootedinmysoulIneverdoubtedwewouldsucceed.Fifteenyearslaterwehadthelargesthotelsystemintheworld﹣HolidayInn.In1979mycompanyhad1759innsinmorethanfiftycountrieswithanincomeof1billionayear. Youmaynothavestartedoutlifeinthebestsituation.Butifyoucanfindataskinlifeworthworkingforandbelieveinyourselfnothingcanstopyou. 1WhenKemmonswasalittlechildwhathismotherusuallytoldhimwas. A.funny B.touching C.fighting D.encouraging 2Formtheauthor'sviewwhoplayedthemostimportantpartinmakinghimwalkbacktoschoolagain? A.Mother. B.Teachers. C.Friends. D.Relatives. 3AccordingtothepassagewhatmadeKemmonsstartamotelbyhimself? A.Hispreviousbusinesssuccessofvariouslevels. B.Histerribleexperienceinthehotel. C.Hismom'ssupport. D.Hiswife'ssuggestion. 4InyouropinionwhichofthefollowingbestdescribesKemmons'mother? A.Modesthelpfulandhardworking. B.Carefulhelpfulandbeautiful. C.Lovingsupportiveandstrongwilled. D.Strictsensitiveandsupportive.
用反证法证明命题三角形的内角至少有一个角不大于60°时应假设
AsfewerpeoplechoosetomakesugarpaintingsthetraditionalChinesefolkcraftmighthavebecomea1distancememoryinsomeways.Howevera38﹣year﹣oldcraftsmanLiJianzhongisdevotedto2keeptheartofsugarpaintingalive. Liworkedasaminerformorethantenyears.After3minecloseddownLiturned4housingdecorationuntilhe5forcetogivethatupduetoafingerinjury.Earlierthisyearhediscoveredsugarpaintingsomethinghereallyhadaninterestin. Sincetherewasnosugarpaintingcraftsmaninhisvillagehestudiedby6hethroughlargequantitiesofvideosandinformationontheInternet.Lilovedpaintingwhenhewasyoungandhefounditeasytolearntheskillinsugarpainting.Hesoonmasteredtheskillandcouldmakea7varyofsugarpaintingsthusencouragingsomeofyoungpeople8followtheexampleofhim.Craftsman9normalpaintanimalsandflowersonastoneboardwiththesyrup糖浆.Whenthesugarcoolsdown10appearsisapieceofsugarart.
Fatherwasdiagnosedwithbraincancerduringthesecondhalfofmysenioryear.Itisatimewhenallthebigeventsinagirl'slifearehappening.Howeverthoughinpoorconditionfathermanagedtobepresentateveryoccasion.Hisdoctorsaidthatbyfocusingonallmyfutureeventsithelpedmydadlivelonger.Iguesssobecauseninedaysaftermyhighschoolgraduationmyfatherdied. ForthenextweekafterhisfuneralIdidn'tleavemyroomoreventoshower.FinallymymomstormedinandsaidMegangetup.Ihavesomethingforyoutoread.''Myfather'sdoctorhadsentmymotheraletter.ItcontainedthetypicalIamsorryforyourlosssentences.ButthisletterwasfarfromtypicalIcouldphysicallyseethepainthislosshadcausedhim.Inhisletterhewroteabouthowmyfatherinspiredhimtochangehislifeandthewayheworked.Heexpressedhisdesiretobecomeapersonlikemyfatherwhocaredmoreforthepeoplearoundhimandputeveryoneelsefirst. AfterIfinishedreadingitIdecidedtolivemylife.Iwentoutsideandgotajobasasummercampadvisor.Iworkedfromdawntodarkeverydaythatsummer.IgaveeverythingIhadtothekidsandslowlytheyhelpedtoheal治愈mewithoutevenrealizingwhattheyweredoing Mysummermirroredpartsofthelifemyfatherledinhislastfewdays.Ihadspentthesummermonthsgivingmyselftochildren.ItwasnottheseniorsummerIhadalwaysimagined.Itwasn'tallaboutme.Ihadlearnedthefinallessonmyfatherwasteachingmethatinordertoleadarichandhappylifeyoumustlearnhowtogiveyourselftoothers.Byhelpingthemyoureallyarehelpingyourself. 1Thedoctorsenttheauthorsmotheralettermainlyto. A.showtypicalconcernforherfamily B.encouragehertoliveahappylife C.mournherhusband'sdeath D.appreciateherhusband'sinfluenceonhim 2Whatdoweknowabouttheauthor'sseniorsummer? A.Shespentitthewayshehadalwayswanted. B.Sheworkedhardeverydaytoforgetherpain C.Shegainedquitealotwhilehelpingthekids. D.Shegotajobasherfatherhadexpected 3Whichwordcanbestdescribetheauthor'sfather? A.Selfless. B.Cautious C.Fearless D.Wise. 4Whichofthefollowingcouldbethebesttitleforthepassage? A.Dad'sfinallesson B.Myseniorsummer C.Myfather'sdeath D.Animportantletter
论语•学路篇中说“名不正则言不顺言不顺则事不成事不成则礼乐不兴礼乐不兴则刑罚不中刑罚不中则民无所措手足所以名不正则民无所措手足．”上述推理用的是
Iwearcontacts隐形眼镜.SometimesIbringmyglassestoworkasabackup备份incasemyeyestiredout.InterestinglyonthedayswhenIbroughtmyglassesIalwaysneededthem.WhenmyglassesstayedathomeIneverfelttheurgetoremovemycontacts.Backupplanslikemyglassescanhaveunexpectedinfluencesonourbehavior.Thiseffectcanbepositivebutbackupplanscanalsodestroypursuit追求ofyourgoals Buthowcanabackupplancausefailure?Imaginebeingonthejobmarket.PlanAistoworkforatechfirm.Youknowgettinghiredthereisachallengesoyou'vemadeabackupplanabankingpositionDoesyourbankingbackupplanhelporharmyourchancesofgettingajob? Therearetwokindsofbackupplans.Oneisbasedaroundapossibleemergency﹣﹣ifplanAdoesnotworkthenusePlanB.SothejobseekermightsimplysubstitutePlanBifPlanAfails.HoweverPlanBmightbeuselessifyoudon'thaveenoughtimetoprepareforthebankingpositionafterbadnewsfromthetechfirm. Theotherkindofbackupplansaredifferent.PeopletakePlanAwhileactivelycomparingPlanAandPlanB.Forourjobseekerthatwouldmeanpreparingforbothinterviewsatthesametime. Thesecondkindofbackupplansintroducegreaterchallengesandarecostliertouse.OnemustactivelycomparePlansAandBallthetime.Youcouldputsomuchworkintothebackupplanthatyoucompromiseyourchanceforsecuringtheprimarygoal.Forthejobseekeractivelycomparingthetechandbankoptionsmightresultinunder﹣preparingorbothinterviews. Sowhatmakesagoodbackupplan?Backupplanschangethewaygoalsarepursuedsometimesfortheworse.AsyouthinkaboutyourownPlanBconsiderhowitisaffectingPlanA.Forwhatit'sworthIamsittinginmyofficewhilemyglassesaresafelyathome.Risky?Perhaps.Butmyeyesfeelfresh. 1Theauthormentionedtheglassesto. A.introducethetopic B.amusethereader C.presentthebackground D.explainthephenomenon 2Whichofthefollowingisthedisadvantageofthesecondkindofbackupplan? A.PlanBmighthavealotofchallenges. B.PlanBmightcostmuchtimeandenergy. C.Jobseekersmightfallintoadilemmasituation. D.Jobseekersmaynotbewellprepared. 3Whatisthemainideaofthepassage? A.Backupplansmightbeharmful. B.Backupplansareimportant. C.Backupplansmightbeimproper. D.Backupplansareofdifferentkinds 4Theauthordevelopsthepassagemainlyby. A.listingsomeexamples B.followingthetimeorder C.comparingdifferentideas D.analyzingcausesandeffects
假定你是李华你校英文报正在举行建国70周年看生活方式变迁主题征文活动.请你根据以下要点提示投稿 1.生活方式的变化至少写两点变化 2.变化给人们带来的好处 3.你的感受. 注意词数100左右开头已为你写好不计入文章总词数 可以适当增加细节以使行文连贯. Withtheadvanceofmoderntechnologynewinventionsanddevelopmentsarerisinginourdailylife
在同一平面直角坐标系中满足由曲线x2+y2＝1变成曲线的一个伸缩变换为
已知复数z1＝在复平面内对应的点为A复数z2在复平面内对应的点为B若向量与虚轴垂直则z2的虚部为．
WantawonderfultravelinLondon?Don'tmissthefollowing! CartoonMuseum ThishighlyentertainingLondontouristattractioncoversthehistoryanddevelopmentofBritishcartoonsfromthe18thcenturytothepresentday.Youcanfindadetailedcollectionofalltypesofcartoonsinthismuseumincludingcaricatures讽刺漫画andrareexamplesofcartoonartit'sanidealplacetoentertainkidsofallagesaswellasaseriouscollectionforanimationenthusiasts. Thereareoverninehundredpiecesonexhibitandthemuseumregularlyholdseventswherebothchildrenandadultscanparticipate.BookingfortheseeventsisrecommendedduetothepopularityyearroundofthisLondonMuseum. Telephone02075808155 ChislehurstCaves ChislehurstinLondonishometochalkcavesthatwereminedbyhandforover8000years.AtourofthesecavesisanexcitingwaytoseehowBritishpeoplehaveimpactedontheirenvironmentoverthousandsofyears. Telephone02084673264 TheOldOperatingTheatreMuseum TheOldOperatingTheatreMuseumisoneLondonmuseumofferingafascinatinginsightintothemedicalprofessionofthepast.This300﹣yearoldherbgarret阁楼isBritain'sonlysurvivingoperatingtheatrewithawoodenoperatingtableandanobservationstandfromwhichvisitorscanwitnesssurgeryperformed. Telephone02071882679 CurzonMayfairCinanaMuseum RecentlyvotedoneofLondon'sbestcinemasbyTimeOutreaderstheCurzonMayfaircinemaiseverythingyouwouldexpectfromthisparticularpartoftownluxurious奢华的andtasteful.Showingmostlyart﹣houseandindependentfilms.theCurzonMayfairisuniqueintheworldofLondoncinemaforitsroleinscreeningthesefilmsforindustryandpress. Telephones03333210104 1WhatcanwelearnfromtheCartoonMuseum? A.Itisdesignedonlyforkids. B.ItistheoldestcartoonmuseuminBritain. C.Visitorscantakepartintheactivitiesheldinit. D.Onemustbookthemuseuminadvancetovisitit. 2Whichwillyoucallupifyou'dliketoknowsurgeryofthepast? A.02075808155・ B.02071882679. C.03333210104. D.02084673264. 3Whichofthefollowingmayattractanaturelover? A.ChislehurstCaves. B.CartoonMuseum. C.CurzonMayfairCinemaMuseum. D.TheOldOperatingTheatreMuseum.
At200amthisFridaymorningIreceivedatextmessagefromafriendaskingifIhadanySmileCardsinSpanish.Iimmediately1thatIdidn'thaveany.HoweverIaskedherwhyshewantedthem2inSpanishandifSmileCardsinEnglishwouldbe3. Tomy4shesaidshehadbeenoneofthefewselectedbyherhighschooltogoonaservicetriptoPanama.ShewantedtosharetheconceptofSmileCardsand5. Withchildreninthevillages.Iwastotally6andexcitedwithhearingthenews!SoIdecidedtostop7andcallhertogetmoreinformationaboutherservicetrip.Shewasleavingthatsamedayatmidnight.ItoldherIwould8aboutitandletherknowbyafternoonifIcould9anyinSpanish.Nolucktillmidday. 10therewasonetranslationoftheoriginalEnglishSmileCardinSpanishonline.Carryingthe11Iheadedovertoalocalprintingshopandaskedtheemployeeifhecouldprint100SmilecardsinSpanishby600pm.Theemployeesaiditwas12togetitsincehewasworkingbyhimselfandwas13withorders.DisappointedI14theEnglishversionoftheSmileCardandexplainedmy15tohim.Evenhewasexcitedandpromisedthathe'dtryhisbesttogetthem16. Whentheclock17ninetheSpanishSmileCardswereready.ToexpressmygratitudeIbroughtsomeIndianfoodtothisemployeetothankhimforhis18.Iquicklygotinto19mycarandmyfiend'shouseandshewaspatientlystandingoutsideawaitingmy20.Wedidn'tgetachancetohaveaproperconversationbutthatwasgoodenough. 1A.believed B.imagined C.responded D.noticed 2A.specially B.universally C.frequently D.officially 3A.accurate B.acceptable C.valuable D.flexible 4A.surprise B.puzzle Cdisappointment D.amusement 5A.solution B.amazement C.curiosity D.kindness 6A.confused B.rocked C.concerned D.satisfied 7A.talking B.travelling C.discussing D.texting 8A.worry B.bargain C.enquire D.quarrel 9A.takechargeof B.search C.control D.getholdof 10AStrangely B.Fortunately C.Obviously D.Hopefully 11A.excitement B.dream C.courage D.doubt 12A.necessary B.worthwhile C.impossible D.natural 13A.pleased B.curious C.occupied D.nervous 14A.tookout B.gaveout C.madeup D.usedup 15A.identity B.situation C.concept D.difficulty 16A.designed B.decorated C.written D.printed 17A.recorded B.exposed C.struck D.shook 18A.commitment B.judgement C.encouragement D.assessment 19A.steppedforward B.heldon C.showedup D.spedoff 20Aapology B.arrival C.explanation D.participation
Beawareofyourown长处andweaknesses.
如图已知直线a∥b∥c直线mn与直线abc分别交于点ACEBDFAC=4CE=6BD=3则BF=
使我感到惊讶的是这个小女孩的小提琴拉得这么好.使用主语从句和表语从句
假定你是高一的李华得知第七届世界军人运动会the7thCISMWorldGames将于2019年10月18日至27日在中国湖北武汉举行.请写一封信申请去做志愿者volunteer内容包括 1写信目的 2个人优势 3能做的事. 注意 1词数100左右 2可以适当增加细节以使行文连贯 3申请信的开头已给出不计入字数. DearSir/Madam IamLiHuaastudentstudyinginakeymiddleschool.
执行如图所示的程序框图如果输出的a值大于2019那么判断框内的条件为
Iamoftenaskedwhyreadingissoimportant.Icouldn'thelpbutquote引用TyrionLannisterfromthebook‘Gameofthrones'writtenbyGeorgeRRMartin.ThisconversationfollowswhenTyrionwasaskedwhyhereadssomuch Ihavearealisticgraspofmyown1andweaknesses.Mymindismy2.MybrotherhashisswordKingRoberthashiswarhammer战锤andIhavemymind…andamindneedsbooks3aswordneedsawhetstone磨石ifitistokeepthesword4.Tyriontappedtheleathercoverofthebook.That'swhyIreadso5JonSnow. ToquoteGeorgeRRMartinAreaderlivesathousandlivesbeforehedies.Themanwhoneverreadslivesonly6. Anoldfarmerlivedonafarminthemountainswithhisyounggrandson.EachmorningGrandpawasupearlysitting7thekitchentablereadinghisbook.Onedaythegrandsonasked‘Grandpa!ItrytoreadthebookjustlikeyoubutIdon't8itandwhatIdounderstandIforget9Iclosethebook.Whatgooddoesreadingthebookdo?' Thegrandfatherquietly10andrepliedTakethiscoalbasketdowntotheriverandbringmebackabasketof11. Theboydidashewastoldbutallthewater12beforehegotbacktothehouse.ThegrandfatherlaughedandsaidYou'llhavetomovealittlefasternexttimeand13himtotheriverwiththebaskettotryagain.Thistimetheboyranfasterbutagainthebasketwasemptybeforehereturnedhome.Outof14hetoldhisgrandfatherthatitwasimpossibletocarrywaterinabasketandhewenttogetabucket15.TheoldmansaidIdon'twantabucketofwaterIwantabasketofwater.You'rejustnottryinghardenoughandhewentoutthedoortowatchtheboytryagain.Atthispointtheboyknewitwas16buthewantedtoshowhisgrandfatherthatevenifheranasfastashecouldthewaterwouldleakoutbeforehegotbacktothehouse.Theboyagaindippedthebasketintotheriverandranhardbutwhenhe17hisgrandfatherthebasketwasagainempty.HesaidSeeGrandpait's18! Soyouthinkitisuseless?theoldmansaidLookatthebasket.Theboylookedatthebasketandforthefirsttimerealizedthatthebasketwas19.Ithadbeentransformedfromadirtyoldcoalbasketandwasnowcleaninsideandout. Sonthat'swhathappenswhenyoureadthebook.Youmightnotunderstandorremembereverythingbutwhenyoureadityouwillbechangedinsideand20!!! 1A.wisdom B.strengths C.shortcomings D.disadvantages 2A.tool B.weapon C.equipment D.instrument 3A.as B.before C.while D.because 4A.fast B.sharp C.smooth D.important 5A.few B.much C.little D.many 6A.it B.one C.that D.those 7A.at B.down C.along D.besides 8A.confirm B.believe C.understand D.convince 9A.quickly B.finally C.immediately D.frequently 10A.turnedup B.turnedout C.turnedaway D.turnedaround 11A.fish B.coal C.earth D.water 12A.wentout B.flewout C.droppedout D.leakedout 13A.sent B.asked C.ordered D.required 14A.breath B.control C.curiosity D.consideration 15A.even B.though C.instead D.however 16A.hopeful B.necessary C.impossible D.important 17A.heard B.arrived C.glanced D.approached 18A.useless B.hopeless C.helpless D.worthless 19A.same B.equal C.strange D.different 20A.out B.around C.anywhere D.everywhere
LastsummerIwenttooneoftheworld'smostfamoushistoricalplacestheForbiddenCityinBeijingwhatwasthehomeoftheemperorsofthelasttwodynastiesintheChinatheMingandQingDynasties.Thepalacehas10.000rooms.InMandarintheForbiddenCityiscallingthePurpleForbiddenCity.Howeverthecolorofthepalacehimselfisnotpurple.ThecolorpurplestandsthepowerofthegreatemperorsofChina.Itwassoasacredplacethatcommonpeoplecouldnotevendreamofevergothere.TheemperorsalsohavesomeofthelargerfestivalcelebrationsattheForbiddenCity.NowtheForbiddenCityisknownasahistoricalsiteformillionsoftouristfromallovertheworld.
不是你而是他为这件事情负责.not…but
点M的直角坐标是则点M的极坐标为
YesI'llbereadyatnineinthemorning.Goodbyedearandthanksagain.IthadnotbeenaneasytelephonecallforMrsRobsontomake.HerdaughterhadbeenverykindofcourseandhadimmediatelyagreedtopickherupanddrivehertothestationbutMrsRobsonhatedtosaythatsheneededhelp.Sinceherhusbanddiedtenyearsagoshehadbeenproudofherselfonherindependence.Shehadcontinuedtoliveintheirlittlehousealone. ThateveninghowevershewasstandingatherlivingroomwindowstaringoutattheSOLDnoticeinthesmallfrontgarden.Herfeelingsweremixed.Ofcourseshewassadatthethoughtofleavingthehouseasitwasfullofsomanymemories.Butatthesametimeshewaslookingforwardtospendingherlastyearsneartheseabackinthelittleseasidetownwhereshehadbeenbornandgrewup.Withthemoneyfromthesaleofthehouseshehadboughtalittleflatthere.Sheturnedfromthelivingroomwindowandlookedroundattheroom.Therewasasmallfishtankwithtwogoldfishinit.WhenaskedwhyherhusbandusedtosayIt'snicetohavesomethingaliveintheroom.Sincehehadpassedawayshehadalwayskeptsomegoldfishandalwayshadsomethingaliveintheroom. ThenextmorningashertrainwaspullingoutofthestationMrsRobsoncalledtoherdaughterKateyouwon'tforgettocollectthegoldfishwillyou?Thechildrenwilllovethem.It's… IknowKateinterruptedgently.It'snicetohavesomethingaliveintheroom. 1AccordingtothefirstparagraphweknowthatMrsRobson. A.wastiredoflivingalone B.dislikedturningtopeopleforhelp C.wasnotlikedbyherdaughter D.wantedtolivewithoutherhusband 2HowwasMrsRobsonfeelingonherlastnightinthehouse? A.Sadandhopeful. B.Happybutworried. C.Proudandsad. D.Happybutnervous. 3MrsRobsonwasgoingto. A.beinhospital B.livewithherdaughter C.travelabroadalone D.liveinherhometown 4WhatcanwelearnaboutMrsRobsonfromthepassage? A.Shedislikedkeepingpetsathome. B.Shemissedherhusbandverymuch. C.Shehadthesamehobbywithherhusband. D.Shewasworriedaboutherdaughter'sbadmemory.
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