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某化学兴趣小组对金属的性质做了如下探究，请你帮他们完成下面的内容． （1）探究铁生锈的原因（如图）（每支试管中均放有完全相同的洁净铁钉）： ①一段时间后甲同学观察到： 试管中的铁钉明显生锈...
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为探究FeCuAg的金属活动性强弱某兴趣小组做了如下实验1实验前需将金属丝打磨目的是2甲实验中发生反
某化学兴趣小组为验证AgFeCu三种金属的活动性顺序设计了如下图所示的实验操作其中可以达到实验目的的
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某化学兴趣小组学习酸碱中和反应后对稀盐酸与氢氧化钠溶液混合后的有关问题进行了如下探究请你一起参与他们
某兴趣小组同学为了探究实验室中久置的氢氧化钠固体的成分进行了有关实验请你与他们一起完成以下探究活动【
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某中学生物兴趣小组为了探究大豆种子萌发是否需要某种环境条件制订了如下表所示的探究计划分析上表可知该兴
光照
适量的水分
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某化学兴趣小组利用下图装置制取氨气并探究氨气的有关性质完成下列填空.A.装置中加入NH4Cl与CaO
某化学兴趣小组为了探究金属的化学性质进行如下两个实验实验一将铝丝伸入硫酸铜溶液中反应的方程式为实验二
某化学兴趣小组为验证AgFeCu三种金属的活动性顺序设计了如下图所示的实验操作.其中可以达到实验目的
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某化学兴趣小组进行了识别化肥的探究活动他们对氯化铵碳酸氢铵硫酸钾磷矿粉四种化肥进行了如下探究1取上述
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为探究FeCuAg的金属活动性强弱某兴趣小组做了如下实验1实验前需将金属丝打磨目的是.2甲实验中发生
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某化学兴趣小组为验证AgFeCu三种金属的活动性顺序设计了如下图所示的实验操作其中可以达到实验目的的
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某化学兴趣小组为验证AgFeCu三种金属的活动性顺序设计了如下图所示的实验操作其中可以达到实验目的的
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化学兴趣小组要探究放置很久的铝片变质的程度进行了如下操作请你参与他们的探究过程提示假设样品中的其他成
为探究FeCuAg的金属活动性强弱某兴趣小组做了如下实验1实验前需将金属丝打磨目的是________
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某化学兴趣小组为验证AgFeCu三种金属的活动性顺序设计了如下图所示的实验操作其中可以达到实验目的的
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化学是一门实验科学关注物质变化过程探究物质变化的条件很有必要某化学兴趣小组做了如下图所示的实验A.探
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如图各组转化中一定条件下均能一步实现的组合是
Thesummerbeforetheninthgradeprocrastination拖延affectedmylifeinadeepway.WithonlyafewdaysuntilthestartofschoolIhad1justoneofthreehomeworktaskswewere2Insteadofenjoyingmylastfewmomentsof3Ispentthattimedoinghomeworkwhichwasan4waytoendthevacation. Puttingin100percent5Ialwaysstartedofwithstrong6atthebeginningofeachschoolyear.7Istruggledtomaintainthatenergyastheweekspassed. OnenightmyfatherandIwerehavinga8aboutcollege.HetoldmeItdoesn't9muchwhetheryougetintoanIvyLeagueuniversityorjustan10college﹣whatmattersishowyougetthereandwhatyoudoto11it.Thisreallyspoketomebecauseitmademefocusmoreonthe12ofmyworkratherthanthequantity. ThankstothatconversationI13thewayIwentthroughlife.Istartedto14thattryingmy15bestisathousandtimesbetterthansimplydoingsomethingtogetitdone. Myeffortbeganto16inmyfirstyearofhighschool.Ihadnever17thatmygradesinsomeharderclassescouldbebetterthanthoseintheeasieronesItooklastyear. NowIwouldratherworkhardforsomethingandenjoythe18ofsuccessthannottryatallorgiveuphalfway.Motivationcan19becomeahabitifyourepeatan20thathelpsyouavoidprocrastination. 1A.finished B.shared C.quitted D.repeated 2A.passed B.assumed C.designed D.showed 3A.pride B.freedom C.silence D.surprise 4A.unpleasant B.enjoyable C.valuable D.confusing 5A.trust B.fund C.effort D.knowledge 6A.curiosity B.misunderstanding C.fear D.motivation 7A.Otherwise B.However C.Therefore D.Besides 8A.conversation B.quarrel C.discussion D.break 9A.occur B.work C.matter D.fail 10A.popular B.famous C.ordinary D.new 11A.disturb B.accomplish C.attract D.embarrass 12Aamount B.comment C.request D.quality 13A.changed B.refused C.admitted D.copied 14A.explain B.doubt C.believe D.expect 15A.slight B.sharp C.steady D.absolute 16A.fallbehind B.runout C.breakout D.payoff 17A.worried B.imagined C.promise D.questioned 18A.pleasure B.effect C.opinion D.progress 19A.luckily B.hardly C.easily D.silently 20A.test B.idea C.game D.routine
假如你是李华外教Peter布置了一篇作文作为家庭作业你抄了别人的作业交了上去事后觉得自己不诚实很后悔.请写一封道歉信向外教表达你的款意要点如下 1.你抄作业的原因 2.你的补救措施. 注意 1.词数100左右 2.可以适当增加细节以使行文连贯. 参考词汇 DearPeter Yours LiHua
30分'MomIdon'tlikeyou'mytwo﹣year﹣oldsonsaid.'Okayisthat1youloveme?'Iasked.'Noyou'renotlovely.'ThatnightasIwashedmyfaceI2alittlelongerinthemirror﹣notbecauseIwashurtbyhis3butbecauseInoticedtherewasnolightinmy4.Itookoutapenandstartedwritingalist﹣alistto5myself;alisttoputsparkle火花backintomyeyes.Ioncemademanylistsbut6accomplishedanything.Thistimewouldbe7!ThefirstgoalonmylistIwantedtoachievewas8aPolarPlungetoraisemoneyfortheSpecialOlympics.OnthatdaywhenI9intomy1980sworkoutclothesJacksmiled'Momyoulook10.'Maybejustmaybesomelight11myeyes.WhencomingoutofthecoldlakeIfelthappyandproud.Ikeptscreaming'I12it!'ButoneofthemostexcitingpartsofthedaywaswhenIstoodinfrontofmy13whichwastapedontherefrigeratordoor.I14itemnumberone.WiththatIbegantotakebackmylife.EveryonetakingpartinthePolarPlungereceiveda15.WheneverIworeitJackasked'IsthatyourPolarPlungeclothing?'Ianswered16'Yes!''Iwanttodothattoo.'IwashappyherememberedIjumpedintoa17lakeandthathewantedtodoactivitieswithme.Witheach18crossedoff划掉thelistapieceofmyselfis19.NotonlyamIshowingmyfamilyit'simportantto20butI'mshowingmyselfthatI'mworthit.1A.how B.where C.whether D.because2A.washed B.looked C.stayed D.felt3A.behavior B.statement C.question D.rudeness4A.face B.life C.eyes D.thoughts5A.defeat B.save C.explain D.teach6A.seldom B.always C.yet D.almost7A.complete B.similar C.unforgettable D.different8A.learningfrom B.settingup C.lookinginto D.participatingin9A.jumped B.changed C.ran D.burst10A.nervous B.calm C.pretty D.cold11A.slidaway B.approachedto C.gotoutof D.camebackto12A.did B.got C.missed D.appreciated13A.mirror B.son C.list D.photo14A.ticked B.added C.built D.enlarged15A.souvenir B.medal C.cap D.shirt16A.patiently B.embarrassingly C.proudly D.unwillingly17A.huge B.freezing C.beautiful D.deep18A.letter B.date C.name D.goal19A.returning B.disappearing C.united D.cured20A.work B.dream C.learn D.share
FoodfestivalsareacommonoccurrenceintheUKandtakeplaceinallsortsofplacesandatallsortsoftimes.Whateveryourtastethere'safoodfestivaltomatch﹣nomatterhowspecialized. Meatopia Thisthree﹣dayLondon﹣basedfestivaltakesplaceattheendofAugustandisameatlover'sparadise.Inadditiontoarangeofmeatproductsfromburgerstosteaksattendeescanlistentolivemusicwatchbutcheryshowsandattendinformalmeat﹣basedworkshops. Vegfest IfyoupreferafestivalthatwillhelpyoumeetyourfiveadaythenVegfestfestisforyou.Thisvegan﹣friendlyeventtakesplaceseveraltimesayear.Hereyoucanenjoyawideselectionoffreshlypreparedvegetableslearncookingtipsandheartalksonnutritiontohelpyoumakethemostofyourplant﹣basedsearch. TheMarmaladeFestival HeldinCumbriathisfestivalhasbeenrunningfor13years.Itincludesacompetitiontofindthebesthomemademarmalade.Therearethousandsofentriesfromover30differentcountriesacrosstheglobe. TheGinger姜andspiceFestival TheGingerandspiceFestivalheldinMarketDraytoncelebratesitstown'shistoricconnectiontoRobertClivewhoreturnedfromIndiawithginger.Becauseofthistheyspecializeinbakinggingerbreadbutalsosellarangeofspicesfrommildtohot. TheNationalHoneyshow Itstartedin1921andisthelargesteventofitskind.Thisthree﹣dayeventattractsover2000participantstotheirtraditionalcompetitionandofferslecturesandworkshopsonbeekeepingandofcoursethatsyrupygoldenhoney. Whilepeople'stastesaredifferentfromeachothertheUKhassomethingtooffermostpeople.Fromlarge﹣scalefestivitiestothesmallergatheringsonethingiscertainpeoplearepassionateabouttheirfood.Andwhilesomeoftheproductsonoffermightbestrangetosomeonewhenfoodisgiventhatmuchattentionit'sunlikelytoleaveabadtasteinanyone'smouth. 1WhichisTRUEaccordingtothepassage? A.PeoplecanenjoyawideselectionofmeatinVegfest. B.MeatopiafallsonAugust31everyyear. C.TheMarmaladeFestivalisjustknownbytheBritish. D.RobertClivetookgingertotheUKfromIndia. 2Whichfestivalwillbemostatractiveforpeoplehavingasweettooth? A.Meatopia B.TheGingerandspiceFestival C.Vegfest. D.TheNationalHoneyshow. 3Inwhichpartofamagazinecanyoumostprobablyfindthispassage? A.Voice&views. B.Science&Technology. C.Culture D.Sports.
假定你是李华你的朋友Tony刚刚升入高三因为暑期短他没休息好所以现在状态很差.面临高考压力Tony不知所措.请你给他写一封信表示安慰要点如下 1表示难过和理解 2就如何调整状态提出建议 注意 1.词数100左右 2.可以适当增加细节以使行文连贯.
以下变化中与其它三个不同的是
下列关于物质的鉴别除杂所选用的试剂或方法错误的是
12monthsagowetestedmostofthedrone无人机modelsonthemarket.Typicallymodelsunder﹩100wereverydifficulttocontroleveninlightwind.1HoweverinthelastfewmonthsacheapdronemodelcalledtheDroneXprohasbeenreceivingalotofpraiseamongexperts. Whyisthisextremelyhighqualitydronesocheap? TheDroneXProwasdesignedbytwoengineersanddronelovers.Theydidlotsofresearchandcametoashockingconclusion.Thehigh﹣qualitytechnologyinmostexpensivebranddronescomesmostlyfromtheSAMEsuppliercompaniesandwasquiteinexpensive.Inotherwords?2it'sbecausethecostofadvertisingthebrandnameitselfisveryhigh. 3Intelligentflightmodesenablethedronetolandsafelyandmake3Dspins&othercoolflips. Thehigh﹣qualityhidden3﹣axisgimbal三轴万向节isabletostabilizethecameraevenathighspeedforsharpimagesandjitter﹣freevideo.Evenwithwindthevideosarerazor﹣sharpinreal﹣timetransmissionfromyourenvironment﹣likeaHDlivestream. Thewide﹣anglelensprovides100mbpsultra﹣HDimagesforwonderfulandcrystalclearimages. Whenfoldedupthedroneisbarelylargerthanafist.Itfitsineverybeltbagandineverybackpack!YoudonotneedafilmcrewwhenflyingtheDroneXPro. Whyisthisdronesopopular? Thisdronecostsonlyasmallpartofthepriceofprofessionalbranddrones.Itcomesinasleekandcompactdesignandcanbetakenanywhere.Itisalsoquietintheairandhasanimprovedflighttime. 4Flyingfeelsverynatural.Evenafirsttimedroneflyercanlearntouseitinamatterofminutes.Itisunbelievablehoweasytoflythedroneisthankstoitsincludedcontroller. Ourconclusion Thisbrilliantnewdroneistakingtheworldbystorm.5 A.Thischeapdronemightbethebestsellinggiftin2019. B.Theircameraalsostrugglestodeliverhigh﹣qualityphotosandvideos. C.Isthisinexpensivedronereallyasgoodastheexpertsaresaying? D.WhatmakestheDroneXProsospecial? E.Thatmeansthey'reableoofferaworldclassqualitydroneatanincrediblylowprice. F.Thereasonwhybrandnamedronesaresoexpensiveisn'tbecauseoftheirtechnology. G.Thisdronemakesbeginnerslooklikeprofessionals.
已知CO2通入澄清石灰水中溶液变浑浊继续通CO2气体由浑浊又变澄清CaCO3+H2O+CO2＝CaHCO32由此某化学兴趣小组欲探究CO2与NaOH溶液反应后的溶质组成． 【提出问题】CO2与NaOH溶液反应后的溶质组成 【查阅资料】①NaHCO3+NaOH═Na2CO3+H2O ②盐酸滴入碳酸钠溶液中实际反应分两步进行 第一步反应Na2CO3+HCl＝NaCl+NaHCO3 第二步反应NaHCO3+HCl＝NaCl+H2O+CO2↑ 【提出猜想】猜想1溶质为Na2CO3． 猜想2溶质为Na2CO3和NaOH． 猜想3溶质为NaHCO3和Na2CO3． 猜想4溶质为．填化学式以下同 【实验方案】Ⅰ甲组同学为确定CO2与NaOH溶液反应后所得溶液中溶质组成设计如下实验方案． 1向所得溶液中加入足量的CaCl2溶液若有白色沉淀生成过滤后向溶液中加入足量的稀盐酸无气泡产生则溶质为． 2向所得溶液中加入足量的CaCl2溶液若无白色沉淀生成溶液中加入足量的稀盐酸有气泡产生则溶质为． 31向所得溶液中加入足量的CaCl2溶液若有白色沉淀生成过滤后向溶液中加入足量的稀盐酸有气泡产生则溶质为． Ⅱ乙组同学根据甲组同学的猜想通过定量分析绘制出向所得溶液中逐滴加入稀盐酸的质量与生成二氧化碳的质量关系示意图请根据图象确定溶质成分．
假定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写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改. 增加在缺词处加一个漏字符号Ʌ并在下面写出该加的词. 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. Ashipdestroyedduringastormatseaandonlytwoofthemenonitwereabletoswimtothesmallanddesertedisland.Thetwosurvivorshadbeengoodfriends.TheyagreedtopraytoGodseparate.Thefirstmanprayedforfoodahouseandclothes.Butlikemagicalloftheseweregiventothem.Howeverthesecondmanstillhashadnothing.Finallythefirstmanprayedforashipsuchthathecouldleavetheislandanditworkedwell.Astheshipwasabouttoleavingthefirstmanheardavoicefromheaventellinghimitwasthesecondmanwhenprayedallhisprayerswouldbeanswered.Hewassotouchedthatheburstintotear.
10分假定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写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或修改.增加在缺词处加一个漏字符号∧并在其下面写出该加的词.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.ItwasamathtestforwhichIhavepreparedforalongtime.SomuchimportanceIattachtoitthatIevenfeltalittlenervousbeforeatest.MyheartbegantobeatwildimmediatelyItookmyseatintheclassrooms.Lookingatthetestpaperourmindwentblank.Iattemptedtofocusmyattentionanditwasimpossible.SoIclosedmyeyesandtookadeepbreathtrytocalmdown.Itworked.GraduallyIrecoveredfrommycalmness.FeelingmorerelaxingIpickedupmypenandbegantowrite.
InearlyFebruary201951﹣year﹣oldRainerSchimpfandhisteamsetouttofilmSouthAfrica'sSardineRunoffthecoastofPointElizabethSardineRuntheannualmigration迁徙ofbillionsofsardinesasmallseafishisabigdrawforlargepredatorsespeciallythedolphinandwhale.Predatorsareanimalsthatkillandeatotheranimals.InanattempttoobtainthebestimagesoftheincrediblenaturalphenomenonRainerdivedintothemiddleofaspinningballoffish.SuddenlytheseamovedaroundviolentlyandtheexperienceddiverandhisphotographerHeinzToperczerwhowasfilmingfromtheboatinstantlyrealizedsomethingstrangewasgoingonSuddenlydolphinsshotoutofthewaterawhitespraycameoutandthenawhaleappearedandgraspedRainer. WhileToperczerwasfilmingtheterrifyingturnofeventswithhisvideocameraRainerwhowastrappedhadfirstandengulfed吞噬indarknessinsidethewhalesmouthwastryingtosurvive.Nothingcanactuallyprepareyoufortheeventwhenyouendupinsidethepureinstinct本能thedivertoldBarcroftTV.neeinthewhalesmouthItriedtocontrolmyfear.ButIwasconvincedthatitwasgoingtodivedownandreleasememuchdeeperintheocean. Thewhalequicklyrealizedhewasnosardine!AsthewhaleturnedsidewaysheopenedhismouthslightlytoreleasemeandIwaswashedouttogetherwithwhatfeltliketonsofwaterofhismouthrecalledRainer.Thoughtheentireincidentlastedjust1.8secondsitfeltlikeayeartoRainer. Stillholdinghisunderwatercamerainhishand.thediverswamtohisboatwherehewasquicklyrescuedbythemembersoftheteam.TheterribleadventuredidnotdisturbRainerfortoolong.Aftercheckingtoensurehehadnoinjuriesthediverreturnedtothewatertoseekoutmore. 1Whichofthefollowingisthebesttitleofthepassage? A.ADiver'sNarrowEscapeFromAWhalesMouth B.TheAnnualMigrationOfBillionsOfSeasardines C.AFrighteningAndFantasticExperienceUnderSea D.AnAdventurousTripOffCoastOfPointElizabeth 2WhatanimalsdoesSardineRunappealtomost? A.seagull B.Seals C.Dolphins D.tortoises. 3WhatdidRainerprobablydofirstonceinthewhalesmouth? A.Hedivedaimlessly B.Hecrieddesperately. C.Hepanickedimmediately. D.Hestruggledviolently. 4AccordingtothepassagewecansaythatRainerwasvery. A.intelligent B.generous C.flexible D.fortunate
Howfarwouldyougoforyourkidseducation?That'saquestionmanyparentsareaskinginthewakeofthecollegecheatingscandal__involving38wealthyparentsaroundthecountryincludingactressesLoriLoughlinandFelicityHuffman.HereshowfarIwent.Inthefallof2017myhusbandandIlostourjobs.WehadtotellourdaughterCaseythatwecouldn'taffordtosendherbacktoschoolforherjunioryearatFordhamUniversity.WedecidedthebestchoiceforourfamilywouldbeforCaseytositoutayear.Wepromisedthatwewouldgetherbackthefollowingyear.CaseydecidedtospendtheyearvolunteeringinSouthAfricaOnSept302017weputouroldestchildonaplanehalfwayaroundtheworld.CaseyworkedasatutorteachingkidsmathEnglishandmusicinJohannesburg.WedidgetCaseybackinschoolintime.Whenshereturnedtothecampusshestudiedharder.Sheisn'twhatsheusedtobe.Eachdayismarkedbygratitudebecausesheknowswhatitislikenottobeabletogetaneducation. IwonderwhythecollegecheatingscandalhappenedandIthinkitboilsdowntothisParentswanttocreateacomfortzonefortheirkids.Ofcoursewewantthebestforourkidsbutsometimesweforgetthatrealgrowthdoesn'thappenintimesofcomfortthosevaluablelessonscomewhenweareforcedtothinkinwaysweotherwisewouldn'thave. WhileIdidlessformychildthanthesewealthyparentsdidintermsofmeansinotherwaysIdidmore.Itaughtherthatdisappointmentisapartoflifeandweshouldfaceitbravelyratherthanavoidit.MyhusbandandIshowedCaseythatherstrengthisinherstruggle.That'showfarIwentformykidseducation.AndIdaresaysheiswiserandbetteroffforit. 1Whatdotheparentsinvolvedinthecollegecheatingscandalhaveincommon? A.Theyarewell﹣known. B.Theyareaggressive. C.Theyareveryrich. D.Theyareconservative. 2ThewritermadethedecisiontopullCaseyoutofschool. A.forlackofmoney. B.becauseofherillness. C.asaresultofcheatings. D.duetoherbadbehaviour. 3WhatdoesthewriterthinkofherdaughtersvolunteeringinSouthAfricaforayear? A.It'smeaningless. B.Itiswellworthit. C.Itisawasteoftime. D.Itisawrongdecision. 4Thewriteradvisesparentsto. A.createacomfortzonefortheirkids. B.dowhatevertheycanfortheirkids. C.helptheirkidshaveabettereducation. D.lettheirkidsexperiencedisappointment.
下列家庭小实验不能成功的是
A～I为教案备课库常见的物质它们之间的转化关系如图所示只略去反应①的部分产物．其中B是紫红色金属DF为黑色固体H是实验室中最常见的无色无味液体．请回答 1若A在常温下为液体则A的化学式为反应①的基本反应类型是． 2在金属活动性顺序中B位于铁的填“前面”或“后面”． 3G的化学式为它不具有的性质有填字母． A．酸性B．还原性C．毒性D．助燃性．
有句谚语“每天一个苹果医生远离我”苹果主要能为人体提供的营养素是
8分Iwaitedhalfanhoursettheboardandsatinthestudioreviewingmyquestionsuntilthetelephonelinesflashed.'Hello?''ThisisConnieChung.I'msosorryI'mlate.'ConnieChungwasoneoftheonlyfourwomenanchors主播tomakeitintotheclubofmajoreveningnetworktelevisionnews.Foralmostanhourwetalkedabouttheindustry.WhenIaskedifsheeverhadaninstructorthroughouthertrialssheturnedaroundandofferedtoinstructme.WhenIaskedwhyshedecidedtodoitshesimplyreplied'Becauseyou'regood.'ThatafternoonIrushedhomeandtoldmymotherwhathadhappened.Withoutlookingupshejustsaid'Goodforyou.'HearingthisIfeltasenseofloss.Herconsistentresponsealwaysmademefeelunder﹣appreciated.UntilthenIhadbeensearchingforsomethingthatIwouldneverget﹣thatsenseofloveandacceptanceinahousefullofnegativity消极.IknewIneededtogetridofallthenegativityinmylifefirstsoIpackedmybagsandwalkedoutofthehousethinkingariskwouldallowmetoopenmyselftotheworldagainandreceiveallthepositiveenergythatIneeded.Thenradiobecamemywayofconnectingwithothers.Myabilitytobookhigh﹣levelguestsandcelebrities名人wasgraduallyrecognizedandeventuallyallthewordsofencouragementfrompastguestsandcolleagueshelpedmetore﹣buildmyconfidencelevels.'Icandothis'Ikepttellingmyselfandpushedevenhardertofindmynextaim.PeoplehadfaithinmesoIdevelopedfaithinmyself.Theirpositiveattitudestowardsthemselvesandtowardsmehelpedmedevelopmyownpositiveattitudeleadingtoproductiveinteractionswithcelebritiesandaddingtomylistofinstructors.ImaynothavestartedlifesurroundedbypositivitybutIsurelyfeelthatIamsurroundedbyitnow.It'samazinghowpositivitybuildsonitself.1Whatwastheauthorprobablydoingatthebeginningofthetext?A.Hewaspreparingforashow.B.Hewaslookingforaninstructor.C.Hewaswaitingtobeinterviewed.D.Hewasbroadcastingnewsinthestudio.2Howdidtheauthor'smotherreactwhentoldaboutConnie'sdecision?A.Shefeltexcited.B.Shedidn'tbelieveit.C.Shewasverygrateful.D.Shedidn'ttakeitseriously.3Whydidtheauthorleavehome?A.Tobroadenhisview.B.Toescapepunishment.C.Tokeepawayfromnegativity.D.Tosetupahomeofhisown.4Whatcanbethebesttitleforthetext?A.TheStrengthofPositivityB.MyGoalinCareerC.MyAbilityinManagementD.TheFriendshipBetweenAnchors
HowYouOpenYourCarDoorMatterstoCyclists TheDutchReachisn'tanewdancemoveorarandomYouTubechallenge. 1Andyoumightkeepyourcardoorsafeintheprocesstoo.Allyouhavetodoischangehowyouopenyourdoor. Typicallyapersonsittinginthedriver'sseatofacaropensthedoorwiththehandclosesttoit.Itmakessensesincedoorsaredesignedtobeopenedthatway.Pullthehandleandthedoorisopen.Butifyouhappentodothatatthewrongtimeyoumayunknowinglycreateanobstacleforapassingcyclist.Thecyclistmightbeknockeddownoffthebike.2Clearlythesolutionisforthepersonexitingthevehicletocheckfortraffic.Howeverthecardoordesignandlong﹣timehabitshavemadetheprocessautomatically.3OpenyourcardoorwithyourotherhandusingtheDutchReach.Soinsteadofusingyourlefthandreachforthedoorhandlewithyourright.Thiswillforceyoutoturnyourbody.Attheveryleastyou'lllookintoyoursideviewmirrortocheckforanytraffic. 4AllDutcharetaughtit.It'spartofregulardrivereducation.Thetechniquedatesbackabout50or60yearsintheNetherlands.In2016anAmericannamedMichaelCharneystartedtheDutchReachProject.HewantedtopopularizethepracticeintheUnitedStates.Charney'seffortsmaybepayingoff.5 A.Thecardoorislikelytobedamagedbythefast﹣movingbicycle. B.TheDutchareusedtoopeningtheircardoorsthisway. C.SeveralstatesnowincludetheDutchReachintheirdrivers'handbooks. D.It'sasimplemovethatcanhelppreventharmtocyclists. E.Peoplearetryingtochangethewaytoopenthecar. F.Itiseasytodoonceyouareusedtoit. G.Luckilythere'sasimplewaytosolvetheproblem.
Everybodylovesafatpayrise.Yetpleasureatyourowncanvanishifyoulearnthatacolleaguehasbeengivenabiggerone.Indeedifhehasareputationforslackingyoumightevenbeoutraged.Suchbehaviourisregardedasalltoohumanwiththeunderlyingassumptionthatotheranimalswouldnotbecapableofthisfinelydevelopedsenseofgrievance不满不平.ButastudybySarahBrosnanandFransdeWaalofEmoryUniversityinAtlantaGeorgiawhichhasjustbeenpublishedinNaturesuggeststhatitisalltoomonkeyaswell. Theresearchersstudiedthebehaviouroffemalebrowncapuchinmonkeys.Theylookcute.Theyaregood﹣naturedco﹣operativecreaturesandtheysharetheirfoodreadily.Aboveallliketheirfemalehumancounterpartstheytendtopaymuchcloserattentiontothevalueofgoodsandservicesthanmales. SuchcharacteristicsmakethemperfectcandidatesforDr.Brosnan'sandDr.deWaalsstudy.Theresearchersspenttwoyearsteachingtheirmonkeystoexchangetokensforfood.Normallythemonkeyswerehappyenoughtoexchangepiecesofrockforslicesofcucumber.HoweverwhentwomonkeyswereplacedinseparatebutadjoiningchamberssothateachcouldobservewhattheotherwasgettinginreturnforitsrocktheirbehaviourbecamemarkedlydifferentIntheworldofcapuchinsgrapesareluxurygoodsandmuchpreferabletocucumbers.Sowhenonemonkeywashandedagrapeinexchangeforhertokenthesecondwasreluctanttohandhersoverforamerepieceofcucumber.Andifonereceivedagrapewithouthavingtoprovidehertokeninexchangeatalltheothereithertossedherowntokenattheresearcheroroutofthechamberorrefusedtoacceptthesliceofcucumber.Indeedthemerepresenceofagrapeintheotherchamberwithoutanactualmonkeytoeatitwasenoughtoinduceresentment愤恨inafemalecapuchinTheresearcherssuggestthatcapuchinmonkeyslikehumansareguidedbysocialemotions.Inthewildtheyareaco﹣operativegroup﹣livingspecies.Suchco﹣operationislikelytobestableonlywheneachanimalfeelsitisnotbeingcheatedFeelingsofrighteousindignationtit#itseemsarenotthepreserveofpeoplealone.Refusingalesserrewardcompletelymakesthesefeelingsabundantlycleartoothermembersofthegroup.Howeverwhethersuchasenseoffairnessevolvedindependentlyincapuchinsandhumansorwhetheritstemsfromthecommonancestorthatthespecieshad35millionyearsagoisasyetanunansweredquestion. 1Intheopeningparagraphtheauthorintroduceshistopicby. A.makingacomparison B.justifyinganassumption C.makingaconclusion D.explainingaphenomenon 2ThestatementitisalltoomonkeyLastlineParagraphIimpliesthat. A.resentingunfairnessisalsomonkeysnature B.monkeysarealsooutragedbyslackrivals C.monkeyslikehumanstendtobejealousofeachother D.noanimalsotherthanmonkeyscandevelopsuchemotions 3DrBrosnanandDr.deWaalhaveeventuallyfoundintheirstudythatthemonkeys. A.prefergrapestocucumbers B.willnotbeco﹣operativeiffeelingcheated C.canbetaughttoexchangethings D.areunhappywhenseparatedfromothers 4Whatcanweinferfromthelastparagraph? A.Monkeyscanbetrainedtodevelopsocialemotions. B.Cooperationamongmonkeysremainsstableonlyinthewild. C.Animalsusuallyshowtheirfeelingsopenlyashumansdo. D.Humanindignationevolvedfromanuncertainsource.
8分Wolvesstrikefearintotheheartsofmanyspecieshumansincluded.Ourfearofthemhasbroughtthemtotheedgeofdyingoutaswehavecruellykilledthemascompetitorsandtrouble﹣makers.Butresearchersarediscoveringthattheveryfeartheyputintoprey被捕食者speciesisexactlywhathelpsmakeecosystems生态healthy.YellowstoneNationalParkisatypicalexampleofjusthowwolvescanhelprepairanecosystem.AnOctober2018studyanalyzed40yearsofresearchonlargeanimalsinsidethepark.'Yellowstonehasbenefitedfromthereintroductionofwolvesinwaysthatwedidnotanticipateespeciallythecomplexityofbiologicalinteractions互动inthepark'explainedMarkBoyceaprofessorintheDepartmentofBiologicalSciences.'Wewerereallysurprisedatthatandwe'dneverhaveseentheseresponsesiftheparkhadn'tadoptedecological﹣processmanagement﹣allowingnaturalecologicalprocessestotakeplacewithleasthumanintervention.'Afterthewolveswerere﹣introducedatYellowstonewillowandcottonwoodtreesincreasedinnumber.Thepopulationofbearsandbisonalsoroseandwhatwasoncearulingdeer﹣wolfinteractionisnowmorediverse.TolearnmoreaboutjusthowwolvesarebeneficialashortdocumentaryfromQuestexplainshowthepresenceofwolvesinfluencesthebehaviorofdeerwhicheventuallymakesentireecosystemsmorebiologicallydiverseandhealthy.InthisdocumentarybiologistAaronWirsingexploredwhywolvesandothertoppredators捕食者wereneededfordiverseecosystemstodevelop.UsingasimplevideocameraWirsingisgainingauniqueviewpointonpredator﹣preyrelationshipsandchangingthewaywethinkaboutwolves.Theresearchisonemorepieceofevidenceforwhyprotectingthesetoppredatorsisimportantnotjustforwolvesasaspeciesbutforhundredsofspeciesateverylevelofanecosystem.Thefeartheybringalongmaybetheveryanglethathelpssavethemfromdyingout.1Whatdoestheunderlinedword'anticipate'inparagraph3probablymean?A.Expect.B.Understand.C.Notice.D.Accept.2Forwhatpurposewasadocumentarymade?A.Tointroducehowwolvesbehaveinthewild.B.Toshowhowwolvesbenefitfromecosystems.C.TorecordhowAaronWirsingobservedwolves.D.Tostudywhatgoodwolvescandotoecosystems.3Whatisthesignificanceoftheresearch?A.Itproveswolvesfeedonhundredsofspecies.B.Ithelpsprovetheimportanceofprotectingwolves.C.Itshowsthecomplexrelationshipsbetweenspecies.D.Itprovidesevidencethatwolvesareendangeredanimals.4Whatisthemainideaofthepassage?A.Thefearofwolvesisbeneficialtoecosystems.B.Thefearofwolvesputthemindangerofdisappearing.C.YellowstoneNationalParkowesitshealthyecosystemstowolves.D.TheintroductionofwolvesinYellowstoneNationalParkisasuccess.
下列关于水的说法不正确的是
如图中的物质为教案备课库常见物质他们之间的反应关系如图所示“→”表示转化关系“-”表示相互能反应部分反应物生成物或反应条件已略去．人的胃液中含有少量的A可帮助消化AB发生中和反应产物之一是厨房内常用的调味品C常用于改良酸性土壤D为碳酸盐且C的溶液与D的溶液反应可得到BF和G在常温下都为气体．请回答 1A的化学式是D的俗名是． 2欲通过一步实验证明AB是否恰好完全反应需要向AB反应后的溶液中加入的试剂是． 3E→C反应的化学方程式是．G→F反应的化学方程式是 4图中各物质相互转化中没有涉及的基本反应类型是．
WhenIwasinthemiddleschoolIfoundedastudentclub1namegreenplanetinspiredbyChaiJing'sdocumentaryUndertheDome.Atfirstpeopleknewthisclub.Asaresultwehadonly15members.AndI2laughatforbeingcrazy.HoweverIdidn'tloseheartandIinsisted.EverydayweclubymembersbroadcastweatherreportsandPM2.5levels.Wethenpublishedarticlesandpicturesoftheserious3polluteofthecityontheschoolwebsite.Meanwhilemyclubalsosharessuggestions4howtolivealowcarbonlifeontheschoolboardforexampletakepublictransportationorcarpooltoschooldo5littleshoppingandsoon. 6timewentbymorearewhatstudentsshowedgreatinterestinourclub.AndluckilyIpersuadedmyheadmastertojoinus.Afterwhatseemedagesofwaitingtheclubwasfinallyacceptedbythemajorityofstudentsinmyschool.Anincreasingnumberofstudentssupported7ours. Sincethenwe'reworkedtogether8promoteourclub.Anduptonow85%ofthestudents9joinusandenjoyedthesimplebuteco﹣friendlylife. SuchisJoy10responsibleandpersistentgirl.
Restaurantsplayamajorpartindefiningthecharacteristicsofacity.TheyrevealthediversityoftheplacethepaceofthenightlifeandthefinancialhealthBeijingametropolisthatishometo20millionpeoplehastensofthousandsofrestaurants.HerearesomespecialrestaurantsinBeijing. ●DiaoyutaiStateGuestRestaurant TraditionallyDiaoyutaiStateGuestRestaurantonlyservedvisitingdignitaries达官贵人.Butsince1980ithasopenedtothepublic.ItoffersnotonlyChinesecuisineatitsbestbutalsosecludeddiningexperienceinanotherwisebuzzing嘈杂的metropolis. LocationNo.2FuchengRoadHaidianDistrictBeijing Cost﹩222.01perperson ●HeritageinWandaPlaza HeritageoffersFrenchcuisinewhichisfamousforitsrichtasteandsubtlenuances LocationWandaPlazaNo93JianguoRoadChaoyangDistrictBeijing Cost﹩12549perperson ●KyotoKadenMinokichiKaiseki﹣RyoriinPanguHotel Astheonly7starhotelinBeijingKyotoKadenMinokichiKaiseki﹣Ryoriisundoubtedlythemostexpensiverestaurantinthecity.KaisekiisatraditionalmulticourseJapanesediner.KaisekionlyusesseasonalingredientsandispreparedbymasterJapanesecheftoreflectchangeofseason. LocationPangu7StarHotelBeijing27CentralNorth4thRingRoadChaoyangDistrictBeijing Cost﹩1159.29perperson ●ChinaGrill Peoplecomeforfoodbutstayfortheview.SituatedonthetopfloorofalandmarkbuildingintheheartofCBDChinaGrilloffersanunparalleledviewofBeijinglandscape Location66/FParkHyatt2JianguomenWaiCBDBeijing Cost﹩130.79perperson 1Whatdoestheunderlinedwordsecludedmeaninthesecondparagraph? A.Fashionable. B.Peaceful. C.Popular. D.Crowded. 2WhatcanwelearnaboutKyotoKadenMinokichiKaiseki﹣Ryori? A.Itonlyservedvisitingdignitarieswhenfirstopened. B.ItsfoodispreparedbymasterChinesechef. C.ItislocatedinHaidianDistrictinBeijing. D.ItisthemostexpensiverestaurantinBeijing. 3WhatisspecialaboutChinaGrillamongtherestaurantsmentionedabove? A.ItistheonlyonethatservesChinesefood. B.Itisthecheapestoneofthefour. C.YoucanenjoytheviewofBeijingwhendiningthere. D.Itisfamousforitsrichtaste.
It1debateforyearsAreeggsgoodorbadforyou?Peoplewhoeatanaddedthreeorfoureggsaweekor300milligramsofdietarycholesterol胆固醇perdayhaveahigherriskofbothheartdiseaseandearlydeathcomparedwiththosewhoeat2feweggsnewresearchfinds. Eggs3specialtheyolkareamajorsourceofdietarycholesterolwroteVictorZhong.In4studypublishedFridayinthemedicaljournalJAMA5therearemanyunexpectedreportsheandhiscolleaguesnotedthatasinglelargeeggcontainsabout186milligramsofcholesterol.Overthefollow﹣upperiodatotalof5400cardiovascular心血管的6eventoccurredincluding1302fatalandnonfatalstrokes1897incidentsoffatalandnonfatalheart7failand113otherheartdiseasedeaths.Anadditional6132participantsdiedofothercauses.8consumeanadditional300milligramsofdietarycholesterolperdaywasassociated9a3.2%higherriskofheartdiseaseanda4.4%higherriskofearlydeathZhong'sanalysisofthedatashowed. Eggsareanutritiousfood.Whilethisstudyfocusesontheamountwe'reeatingit'sjustasimportant10payattentiontohowtheeggsarecookedandtothetrimmingsthatcomewiththemsaidTaylorwhowasnotinvolvedintheresearch.
What'sthepointofstudying?It'ssomethingyoumightaskyourselfifyou'restudyingforadegreeandyou'restrugglingtocompletehomeworkorinanexamespeciallyifyourfriendsseemtobeouthavingagoodtimeorareworkingandearninglotsofmoney. Manyofuschoosetogotouniversityasafirststeptowardsagoodcareerbutsometimesthatcareeristogotouniversityasafirststeptowardsagoodcareerbutsometimesthatcareerishardtoachieveandgraduatesendupdoingsomethingtheyareoverqualifiedfor.WiththeincreasingcostsofuniversitystudentsbegintoaskthemselveswhetheradegreepathisthebestrouteintoacareerThereisaneedformuchbettercareeradviceandguidanceintoemploymentinadditiontouniversityeducation. Butothernewresearchsaysthatadegreewillinthelongrunearnyoumore.Howevertherearedifferencesinyourearningpotential.DrJackBrittonsaysthatgraduatesofthe24RussellGroupuniversitiesearnanaverageof£33500afterfiveyears﹣about40%morethanthosewhostudiedatotheruniversities. Howeverithasfoundit'snotjustthelocationbutotherfactorsthatcanplayapartinwhatyoucanearnsuchasthesubjectastudentchoosestostudy.Itdiscoveredthatfiveyearsaftergraduationtheincomegapbetweenstudentswhostudiedthesubjectsthatattractthehighestandlowestsalariescanbeconsiderable.Graduatesinsubjectssuchaslawmedicinedentistryaswelltendtodowell.Andastheyprogressthepaygapbetweenthesecareersandotherssuchasthecreativeartswidens.TherearefactorstoothatinfluencewhatyoumightearnFiveyearsaftergraduationmenearnonaverage14%morethanwomen.Alsoastudent'ssocialbackgroundcanhaveaneffectwiththosefrombetter﹣offhouseholdmuchmorelikelytogotouniversityandparticularlyagoodone. Butifyoustillfeeluniversitydoesn'tdeliverthebestopportunitiesthenthereareencouragingwordsfromAlistairJarvisheadofuniversitiesUKwhotoldBBCNewsthatEmploysaredemandingmoregraduatesandgraduatesarehalfaslikelytobeunemployedaslikelytobeunemployedasnon﹣graduates.TherearemanygoodgraduateoutcomescomingfromuniversitiesSomayallthatstudyingisworthit﹣afterall‘nopainnogain'! 1Whydostudentsstarttoquestionwhethertogotouniversityornot? A.Becauseoftheheavystudyingburden. B.Becausetheycan'tgetadegreeaftergraduation. C.Becausetheydon'tneedadegreefortheircareer. D.Becauseoftheincreasingcostsofuniversity. 2Whichmajormaymostprobablyleadtoalower﹣earningcareer? A.Medicine. B.Law. C.Creativearts. D.Dentistry. 3WhichofthefollowingismostlikelytobefiredaccordingtoAlistairJarvis? A.Graduates. B.Non﹣graduates. C.Doctors. D.Employers. 4Whatcanbeinferredfromthispassage? A.RussellGroupuniversitiesaretopones. B.Moststudentsgotouniversitytogetagoodcareer. C.One'slocationhasnoeffectonhisincome. D.Graduatesoftenhavemoreacademicqualificationsthanrequiredforaparticularjob.
假定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写的以下作文.文中共有10处语言错误每句中最多有两处.每处错误仅涉及一个单词的增加删除或 修改. 增加在缺词处加一个漏字符号A并在其下面写出该加的词. 删除把多余的词用斜线\划掉. 修改在错的词下画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. WhenIwasinthe6thgrademyparentsboughtmeacellphone.Iwasreallyexcitingtoreceivethephone.ThenextweekendmyfamilywentoncampingintheEastLakePark.Weenjoyboatingonthelake.Iusedournewphonetoplaysomeofmyfavoritesong.Ithoughtitwouldbebrilliantideatoputmyphoneinaplasticbagtoprotectingitfromwater.AftergettingbackItookthephoneinonlytofindthebagfullofwater.Ididn'tknowwhattosavemyphoneandItriedlayingitouttodry.Unfortunatelyitstartedtorain.Whatanawfullyexperience!
室温时随着向盛有稀硫酸的烧杯中逐滴加入BaOH2溶液烧杯内溶液中的溶质质量变化如图所示忽略溶液温度的变化下列分析正确的是
ItwasNewYeartime.Weweretravellinginavan货车1toystothehomeless. Whenwe2thespotsomethingcaughtmyeye.Somethingorsomeonewasmovingintherubbish.SoonI3thatitwasthehomeofapoorfamily.Thereweretwo4bothaboutmyageatthetimeandaladyIsupposedtobetheirmother.Theysatthere5. AsalittlegirlmyselfIwas6interestedinthelittlegirl.How7ourliveswere.Shelivedfortheday8throughtherubbishforsomethingtofillherstomach.Iontheotherhandwaswelllookedafterandneverhadtoworryabout9Ihadagoodeducationandthusa10future.Ilookedatthelittlegirl.Theonly11shehadwastheworn﹣outdressthatshewaswearing. SeeingthislittlegirlImadethedecisionto12adollthathadbelongedtomeforawhile.Whenthevancametoa13Isteppedoutcalledthegirloverand14thedollinherhand.Atfirstshelookedatmewith15andwasn'tcertainwhattodobutthenshesmiledandIsaw16inhereyes.Iwentbackintothevehicleandwestartedto17offandthat?swhenwerealizedthelittlegirlwasrunning18Westoppedagainandopenedthedoor.Thegirlhad19withus.Shelookeddirectlyatmeandsaidtwo20wordsThankYou. 1A.showing B.recommending C.distributing D.selling 2A.left B.changed C.chose D.approached 3A.guaranteed B.realized C.decided D.accepted 4A.boys B.children C.drivers D.adults 5A.happily B.angrily C.hopefully D.helplessly 6A.still B.less C.especially D.probably 7A.similar B.different C.difficult D.ordinary 8A.searching B.getting C.running D.breaking 9A.food B.safety C.health D.transport 10A.doubtful B.distant C.promising D.foreseeable 11A.present B.decoration C.requirement D.possession 12A.giveaway B.giveback C.handout D.handin 13A.station B.stop C.street D.signal 14A.tore B.placed C.dropped D.threw 15A.anger B.pain C.surprise D.disappointment 16A.hope B.loneliness C.anxiety D.astonishment 17A.walk B.get C.lift D.drive 18A.behind B.away C.out D.in 19A.gotalong B.comealong C.caughtup D.turnedup 20A.final B.new C.key D.simple
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