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某小组同学设计如下实验，研究亚铁盐与H2O2溶液的反应． 【实验Ⅰ】 试剂：酸化的0.5mol•L﹣1FeSO4溶液（pH＝0.2），5% H2O2溶液（pH＝5） （1）上述实验中H2O2...
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高三下学期化学《》真题及答案
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有一种褐铁矿主要成分是Fe2O3所含杂质不溶于水和酸某研究性学习小组的同学们利用一小块样品进行了以下
磷酸铁FePO4·2H2O难溶于水的米白色固体可用于生产药物食品添加剂和锂离子电池的正极材料实验室可
某研究性学习小组就Na2O2的有关性质探究如下向滴有酚酞的水中投入一定量的Na2O2观察到先有大量气
某实验小组对中学课本中可生成氢气的反应进行了研究总结出三个可以生成H2的反应①Zn＋盐酸②Na＋水③
已知分解1molH2O2放出热量98KJ在含少量I.－的溶液中H2O2的分解机理为H2O2＋I.－→
反应的速率与I.－的浓度有关
IO－也是该反应的催化剂
反应活化能等于98 KJ•mol－1
v(H2O2)=v(H2O)=v(O2)
向H2O2溶液中加入适量稀硫酸酸化的硫酸亚铁溶液依次观察到如下现象①反应刚开始仅有少量气泡产生②反应
①中仅发生一个反应
Fe3+能催化H2O2的分解
反应过程中溶液pH不断减小
FeSO4与等物质的量的H2O2恰好反应
某学校化学兴趣小组为探索金属回收物的综合利用专门设计实验用含有铝铁铜的合金制取纯净的氯化铝溶液绿矾晶
影响化学反应速率的因素很多某校化学小组用实验的方法进行探究.他们只利用CuFeMg和不同浓度的硫酸0
背景材料某化学老师在一次化学测验中设计了下列试题并对部分学生的解题结果进行了统计和分析【试题】已知分
为比较相同浓度的FeCl3溶液和CuSO4溶液对H2O2分解的催化效果某研究小组设计了如图所示的对照
在t℃时10mL0.4mol·L－1H2O2溶液发生催化分解2H2O2=2H2O+O2↑不同时刻测得
0～2min H2O2平均反应速率比4～6min快
0～6min的平均反应速率 v(H2O2)≈3.3×10－2mol·L－1·min－1
反应至6min时，c(H2O2)=0.3mol·L－1
反应至6min时，H2O2分解了50%
为了探究Cl2SO2同时通入H2O中发生的反应某校化学兴趣小组同学设计了如图所示的实验装置1气体发生
磷酸铁FePO4·2H2O难溶于水的米白色固体可用于生产药物食品添加剂和锂离子电池的正极材料实验室可
磷酸铁FePO4·2H2O难溶于水的米白色固体可用于生产药物食品添加剂和锂离子电池的正极材料实验室可
下图是某化学兴趣小组设计的利用电子垃圾含70％Cu25％Al4％Fe及少量AuPt制备硫酸铜和硫酸铝
为了探究Cl2SO2同时通入H2O中发生的反应某校化学兴趣小组同学设计了如下图所示的实验装置1气体发
实验室可观察到如下实验事实向滴有酚酞的水中投入一定量的Na2O2观察到先有大量气泡产生溶液变红过一会
某研究性学习小组就Na2O2的有关性质探究如下向滴有酚酞的水中投入一定量的Na2O2观察到先有大量气
某化学小组的同学为探究原电池原理设计如图所示装置将锌铜通过导线相连置于稀硫酸中1外电路电子从极流出溶
二氧化铈CeO2是一种重要的稀土氧化物平板电视显示屏生产过程中产生大量的废玻璃粉末含SiO2Fe2O
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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.
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
不等式组的解集在数轴上表示正确的是
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.
用如图的装置演示气体扩散现象其中一瓶装有密度比空气大的红棕色二氧化氮气体另一瓶装有空气．为了有力地证明气体发生扩散装二氧化氮气体的应是选填A或B瓶．扩散现象说明气体分子在不停的做．
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.
以下是教案备课库的基本实验请回答下列问题． 1实验①的实验现象是 2实验②中比较空气和呼出气体中二氧化碳含量大小的操作是 3依据实验③的实验现象说明了二氧化碳的化学性质是 4④中盛有红磷的燃烧匙要选填“缓慢”或“快速”伸入集气瓶中．
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
下列物品中通常情况下属于导体的是
一种声光报警器的电路如图所示各元件均能正常工作对可能出现的现象描述正确的是
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
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.
实验室有三瓶无色液体分别可能是水酒精过氧化氢溶液某兴趣小组欲加以鉴别请你帮助他们完成实验方案．1通过闻气味的方法首先能鉴别出来的一种物质是2小组同学提出可以用二氧化锰固体区分剩余两种无色液体分别取少量液体于试管中加入二氧化锰其中一只试管内观察到则该试管盛装的液体是过氧化氢溶液．
氨气NH3在一定条件下可以和氧气发生化学反应如下图所示分析并回答有关问题． 1甲物质中氮氢元素的质量比为 2写出丙物质的化学式 3甲乙丙丁四种物质中属于氧化物的有 4参加化学反应的甲乙的分子个数比为
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
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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