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如图，在矩形ABCD中，AD＝2．将∠A向内翻折，点A落在BC上，记为A′，折痕为DE．若将∠B沿EA′向内翻折，点B恰好落在DE上，记为B′，则AB＝ ．
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如图在矩形ABCD中点E.是CD上一点沿AE将△ADE翻折使点D.落在BC上的F.处若折痕AE＝5E
如图在矩形ABCD中AB=15cm点E在AD上且AE=9cm连结EC将矩形ABCD沿直线BE翻折点A
如图在矩形ABCD中BC=6CD=3将△BCD沿对角线BD翻折点C.落在点C.1处BC1交AD于点E
3
5
在矩形ABCD中AB=14BC=8E.在线段AB上F.在射线AD上.1沿EF翻折使A.落在CD边上的
如图矩形ABCD的边长AB=8AD=4若将△DCB沿BD所在直线翻折点C.落在点F.处DF与AB交于
如图矩形ABCD中AB=15cm点E在AD上AE=9cm连接EC将矩形ABCD沿BE翻折点A恰好落
在矩形纸片ABCD中AB=6BC=8.1如图①将矩形纸片沿AN折叠点B.落在对角线AC上的点E.处求
如图四边形ABCD是一张矩形纸片AD＝2AB若沿过点D.的折痕DE将A.角翻折使点A.落在BC上的A
如图已知在矩形ABCD中AB=4AD=8将△ABC沿对角线AC翻折点B.落在点E.处联结DE则DE的
如图矩形ABCD中AB=2BC=3点E.为AD上一点且∠ABE=30°将△ABE沿BE翻折得到△A.
在矩形纸片ABCD中AB=6BC=8.1如图①将矩形纸片沿AN折叠点B.落在对角线AC上的点E.处求
如图在矩形ABCD中BC=6CD=3将△BCD沿对角线BD翻折点C.落在点C.′处BC′交AD于点E
3
5
如图在矩形ABCD中AD＞ABAB=2cm．点E在矩形ABCD的边BC上连结AE将矩形ABCD沿AE
如图矩形ABCD中E.是AB上的一点且AEBE=32DA边上有一点F.EF=18将矩形沿着EF翻折使
如图①矩形纸片ABCD的边长分别为aba＜b.将纸片任意翻折如图②折痕为PQ点P在BC上使顶点C落在
如图在矩形ABCD中AD=2将∠A向内翻折点A落在BC上记为A'折痕为DE．若将∠B沿EA'向内翻
如图在矩形ABCD中BC=6CD=3将△BCD沿对角线BD翻折点C.落在点C./处BC交AD于点E.
2.25
3
3.75
7.5
如图矩形ABCD的边长AB=8AD=4若将△DCB沿BD所在直线翻折点C.落在点F.处DF与AB交于
如图在边长为2的菱形ABCD中∠A.=60°点M.是AD边的中点连接MC将菱形ABCD翻折使点A.落
在矩形纸片ABCD中AB=6BC=8.1如图①将矩形纸片沿AN折叠点B.落在对角线AC上的点E.处求
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ChangeyourlifearoundinfoureasystepsChangeyourwayofthinkingYourhomeenvironmenthasnodoubtinstilled灌输certainexpectationsinyouabouthowyourlifeshoulddevelop.1.dependingonyourbackground.Tochangeyourlifearoundstartbyshakingoffsuchexpectationsandsettingyourselfsomenewgoals.2Askyourselfwhatyoureallywantoutoflife.Makealistofideasaboutyourcareermoneypeopleyoulovethingsyou'dliketodoetc.Studyitsoastodecidewhichthreeitemsarethemostimportanttoyou.3.It'sunrealistictoimaginedoingso.Butbyconsciouslychoosingthreespecificgoalsyouwillbeamazedathowmuchmorefocusedanddeterminedyoufeel.OvercomeyourdoubtsConfidenceiseverything.Allthesameacertainamountoffearanduncertaintyisnatural.4.andremainfocusedonyourgoal.Althoughyoumaybeshakingontheinsideshowoutwardconfidenceandbelieveinyourself.Learntovieweveryobstacleasachance.Ifatfirstyoudon'tsucceed﹣﹣Weareallafraidoffailing.Bethatasitmayfailureisanimportantpartofsuccessandyouneedtoholdontothatfactandseesetbacksassteppingstonestowardsyourfinalgoal.5.youshoulduseyourmistakesaslearningtoolsandmoveon.A.LimityourtimeB.PracticehidingitC.FocusyoureffortsD.DifficultthoughitmayseematthetimeE.HoweverthesemaylimityouorbemisleadingF.Rememberit'snevertoolatetolearnsomethingnewG.Howevermuchyou'dliketoachieveeverythingonyourlist
Istillkeepthephototakenbymymomandtreasureitasmylife.ThatwasmanyyearsagowhenIwastakingsummer1incollegeandwasmovingintoanapartment.Iwascarryingtwo2witheverythingthatIwasgoingtoneedto3the6weeksofclasses.ItisthelasttimeIcanrememberevertravelingthat4.Sincethenmypossessionshave5.Thoughmostofthemlikemyfurnitureare6thereareoccasionswhenIfeel7downbyallofthem.IamsurethatIwillneedtwotrucksratherthantwosuitcasesifIever8again.Onethoughthoweverbringsme9.ItistheknowledgethatwhenImakemy10journeyfromthisworld﹣IamdeadIwon't11anyofthosethingswithme.TheonlythingsIwilltakewithmewillbewhatIhavepackedinthesuitcaseofmy12.Iwillbecarryingwithmeevery13thingIeverdideverylovingthoughtIeversharedandeverybitof14Ieverbroughtintothisworldtomakeotherslaugh.IwillbecarryingallthegoodnessIgavetoothersallthe15Iwasabletoshare?andallthejoyIcreated.Thesethingswon'tbeweighingmedown.InsteadIwillbesurely16.Asyouare17foryourownfinaltrip﹣completelypreparedmakesurethatyoushouldnotmakeyour18heavy.Makesurethatthebelongingsinyourhome19takesecondplacetotheloveinyourheart.Whenyou20itinHeavenGodandallHisangelswillsmile.1A.journeys B.holidays C.lectures D.classes2A.trucks B.suitcases C.books D.computers3A.bringout B.takeaway C.getthrough D.payfor4A.hard B.light C.unforgettably D.happily5A.gone B.appeared C.lessened D.grown6A.expensive B.useful C.beautiful D.enjoyable7A.weighed B.put C.turned D.calmed8A.treasure B.possess C.move D.demand9A.confusion B.matter C.hate D.comfort10A.final B.pleasant C.tiring D.latest11A.compare B.take C.fill D.stand12A.soul B.body C.home D.college13A.strange B.little C.kind D.smart14A.knowledge B.hope C.thought D.laughter15A.love B.information C.time D.money16A.burstout B.wornout C.givenup D.liftedup17A.ready B.eager C.fit D.responsible18A.world B.weight C.travel D.heart19A.hardly B.always C.rather D.never20A.cover B.wrap C.unpack D.untie
SmallincreasesintemperaturefoundtoaddpowertostormsintheAtlantic.HurricanesthatformintheAtlanticOceanareexpectedtogainconsiderablestrengthastheglobaltemperaturecontinuestoriseanewstudyhasfound.UsingmodelingdatafocusedontheconditionsinwhichhurricanesformagroupofinternationalresearchersbasedatBeijingNormalUniversityfoundthatforevery1.8°F1℃riseoftheEarth'stemperaturethenumberofhurricanesintheAtlanticthatareasstrongorstrongerthanHurricaneKatrinawillincreasetwofoldtosevenfold.Hurricanestrengthisdirectlyrelatedtotheheatofthewaterwherethestormforms.Morewatervaporintheairfromevaporatingoceanwateraddsfueltohurricanesthatbuildstrengthandheadtowardland.HurricaneKatrinaiswidelyconsideredthemeasureforadestructivestormholdingthemaximumCategory5designationforafull24hoursinlateAugust2005.ItloststrengthasitpassedovertheFloridapeninsulabutgaineddestructivepowerfightbeforecollidingwithNewOrleanskillingmorethan200peopleandcausing﹩80billionindamage.ThestudypointstoagradualincreaseofKatrina﹣likeevents.Thewarmingexperiencedoverthe20thcenturydoubledthenumberofsuchdebilitating将人类摧垮的storms.Buttheongoingwarmingoftheplanetintothe21stcenturycouldincreasethefrequencyoftheworstkindsofstormsby700percentthreateningcoastlinesalongtheAtlanticOceanwithmuitipleCategory5stormseveryyear.'Ourresultssupporttheideathatchangesinregionalseasurfacetemperaturesistheprimarycauseofhurricanevariability'saidAslakGirnsteadaresearcherwiththeCenterforIceandClimateattheUniversityofCopenhagen.Thelargeimpactofsmallsea﹣surfacetemperatureincreaseswasmorethanGirusteadandhiscolleagueshadanticipated.TheentirestudywaspublishedintheProceedingsoftheNationalAcademyofSciences.Globaltemperatureshavesteadilyincreasedmakingthepastdecadethewarmestonrecord.EarlierthisyearclimateresearchersreportedthattheEarth'stemperatureshaverisenfasterinthelastcenturythanatanypointsincethelasticeage11300yearsago.Theprimarycauseacouseususofscientistshassaidistherisingemissionsofgreenhousegaseslikecarbondioxideandmethane.Pasthurricaneshavesupportedthestudy'sfindingthatglobaltemperatureriseislinkedtomoredestructivestorms.AccordingtotheNationalCenterforAtmosphericResearchwhilethefrequencyofstormsdoesn'tappeartohaveincreasedthepercentageofstrongoneshasrisensharplyoverthepastfewdecades.Thetrendmaybesimilarfurtherbackintimebutcomprehensivehurricanedatadoesn'texist.1AccordingtotheteamofinternationalresearchersbasedatBeijingNormalUniversitytheriseoftheEarth'stemperatureislikelytocause.A.thecomingoficeageB.lessintensehurricanesC.moreKatrina﹣likeorworsehurricanesD.moregreenhousegasesintheatmosphere2Theoceanwaterintheregionwherethestormforms.A.isheatingthehurricanesB.evaporatesandbecomesfuelC.headstowardlandD.turnsintowatervaporthatmakeshurricanesstronger3Whatresultcanregionalseasurfacetemperaturechangesproduce?A.Hurricanechanges.B.Increasinggreenhousegasemissions.C.Globalwarming.D.Destructivehurricanes.4Itcanbeinferredfromthepassagethat.A.thereisnolinkbetweengreenhousegasemissionsanddestructivestormsB.reductionofgreenhousegasemissionsmayreducedestructivestormsC.thehigherpercentageofstrongonesroseasmorehurricanesappearedD.pastrecordsonhurricanesincludedeverythingneeded
Asmallstudyofprofessionalsoccerplayersfoundthateventhosewhohaveneverexperiencedaconcussion脑震荡stillhavechangesinthewhitematteroftheirbrainsprobablyfromroutineandunprotectedheaders头球.Thebrain'swhitematterismadeupofnervesandtheirmyelin髓磷脂protectivecoatingthatplayanimportantroleinconnectingbrainareasandsettingupnervousnetworks.PreviousstudieshaveinvestigatedhowconcussionsleadtochangesinthiswhitematterbutanewstudyledbyDr.IngaK.KoerteofHarvardMedicalSchoolinBostonisoneofthefirsttolookathowevenblowstotheheadthataren'tconsideredconcussionsmayleadtobraininjury.InthestudytheresearcherscomparedbrainscansoftwelvemalesoccerplayersfromGermantop﹣levelsoccerclubswhohadnotexperiencedaconcussiontobrainscansofelevencompetitiveswimmerswhohadsimilarlyneverexperiencedrepetitivebraininjury.TheresearchteamuseddiffusiontensorimagingDTIwhichishighlyeffectiveatcatchingwhitematterchanges.Theresearchersfoundsurprisingchangesinthewhitematter.Eventhoughtheplayershadnoconcussionstheirbrainstoldadifferentstoryofdamageincludingchangestothemyelincoatingsurroundingnerves.'Althoughourstudyissmallitisthefirsttolookatsoccerplayerswithnosymptomsofconcussions'saysKoerte.'Wethinkitisanimportantfindingnotjustforsoccerplayersbutotherathletesofothersportstoo.''Ifplayersaredamagingtheirbrainsitisalargepublichealthissuebecauseeveryoneevenatayoungagehitstheirheadlikethis'saysDr.JeffreyBazariananassociateprofessorofemergencymedicineatauniversity.HewasnotinvolvedwiththestudybuthasalsousedDTItoassessmildbraininjuryinhighschoolfootballandhockeyplayers.Koertesaysmoreresearchisneededtogetabetterideaofhowpotentiallydamagingheadinjurycanbeatyoungages.IfitturnsoutrepetitiveheadblowsareharmingbrainfunctionsKoertesaysregulationslikestoppingplayingafterafixednumberofhitsmaybeneeded.Orheadingshouldn'tbeallowedatalluntilacertainage.ThestudyispublishedintheJournaloftheAmericanMeclicalAssociationJAMA.1Accordingtothestudysoccerplayersarelikelytobethreatenedby.A.sportsinjuriesB.routineheadersC.mildconcussionsD.fiercecompetition2Thestudyexplorestheconnectionbetween.A.concussionsandthewhitematterB.repetitiveheadblowsandbraininjuryC.thewhitematterandnervousnetworksD.nervesandtheirmyelinprotectivecoating3Howmanyplayerstookpartinthestudy?A.Eleven.B.Twelve.C.Twenty﹣three.D.Twenty﹣four4Dr.Bazarianseemstofeelthefindingsofthestudymaybe.A.importantB.interestingC.incorrectD.conflicting
Havingbattledwiththeiroverwhethertoofferhelptoanagedmanorwomanwhohasfallenovermostpeoplechoosetohelp. A.compromise B.contradiction C.conscience D.competence
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假定你是高三学子李华在离高考还有一个月之际你给校报英语天地投稿给本校高三学生写一封建议信对考前一个月的英语学习生活等提出自己的建议.内容包括: 1学习方法心态调整; 2生活作息规律; 3表达祝福 注意:1.词数100左右;2.可以适当增加细节以使行文连贯. Deareditor AsaseniorofhighschoolIfindmanyofmyfellowstudentsarestressedandworriedabouttheirEnglishwhilepreparingforthecomingCollegeEntranceExamination. ThereforeI'dliketogivethemsomeadvice. Yours LiHua
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VioletteChilde67isadiningcompanionwhohelpsservepatientslunches.Therolewasintroducedtenyearsagobyadietitianconcerningthatsomepatientswerenoteatingtheirmeals.'Manyofourpatientsareelderlyandcanbeconfusedbythenoisybusyenvironmentofthehospitalandsowon'tfocusoneating'explainsYvonneDouglas﹣Morrisheadofvolunteeringwhooverseestheactivitiesofall528ofthetrustyvolunteers.'Staffarebusywiththeclinicalsideofthingssothediningcompanionswereintroduced.Theywillassistthepatientsandencouragethemtoeat'Violettearetiredlibrarymanagerhasbeenhelpingoutforsixyears.'Itmakesmefeelabitmorecomplete'shesayssimply.'Helpingwiththemealsfreesupthenursestogetonwithotherthings.Ibelieveinbeingapartofthecommunityandthishospitalispartofmycommunity.'Anotherkeyroleisplayedbythedischargevolunteerswhooffersupporttotheelderlyespeciallythoseaged70andover﹣﹣leavinghospitaltoreturntoanemptyhome.Theteamhasabudgetof£10perpersonandwillpoptotheshopsandbuymilkbreadandamealtotidethemoverforthefirstfewhours.Theythencallthepatients他ularlyforaslongastheyneedtocheckhowtheyaregettingonandiftheyneedextrasupport.ThevolunteersinKingstonworkfromadedicatedoffice﹣asmallroominoneofthebuildingsonthehospitalgroundswhereaChristmastreedecoratedwithbaubles小饰物bearingthefacesofvolunteerssitsinthecomer.'Allthevolunteerscomeandgatherhereitgetsverybusyattimes'smilesNicolaHutin*67adischargesupportvolunteer.Amotheroftwoandgrandmotheroffourshewasamembershipcoordinator协调员foratradeassociationuntilsheretiredandhassincevolunteeredatthehospitalonemorningaweekfor18months.1Whatcanwelearnaboutdiningcompanions?A.Theirworkingconditionsarenoisy.B.Theyaregreatassistantsfordoctors.C.Theyoftenmakepatientsmorenervous.D.Theoccupationexistedmorethantenyearsago.2WhatdoesViolettethinkofherwork?A.Shefindsittiringandboring.B.Shefindsiteasytocompleteherwork.C.Shebelievesitgivesherasenseofbelonging.D.Shebelieveshelpingpatientswithtnealsistofreeupthecommunity.3Whatdoesadischargevolunteerdoforthepatients?A.Raisemoneyfortheelderly.B.Payavisittothemathome.C.Buydailynecessitiesforthem.D.Ringtochecktheirhealthcondition.4Whichofthefollowingcanbestdescribethethemeofthetext?A.Itisnevertoooldtolearn.B.Manyhandsmakelightwork.C.Healthisbetterthanwealth.D.Godhelpsthosewhohelpthemselves.
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近年来我国科学家发现了一系列意义重大的铁系超导材料其中一类为Fe﹣Sm﹣As﹣F﹣O组成的化合物．回答下列问题 1元素As与N同族．预测As的氢化物分子的立体结构为其沸点比NH3的填“高”或“低”其判断理由是． 2Fe成为阳离子时首先失去轨道电子Sm的价层电子排布式4f66s2Sm3+价层电子排布式为． 3比较离子半径F﹣O2﹣填“大于”“等于”或“小于”． 4一种四方结构的超导化合物的晶胞如图1所示．晶胞中Sm和As原子的投影位置如图2所示． 图中F﹣和O2﹣共同占据晶胞的上下底面位置若两者的比例依次用x和1﹣x代表则该化合物的化学式表示为通过测定密度ρ和晶胞参数可以计算该物质的x值完成它们关系表达式ρ＝g•cm﹣3． 以晶胞参数为单位长度建立的坐标系可以表示晶胞中各原子的位置称作原子分数坐标例如图1中原子1的坐标为则原子2和3的坐标分别为．
WantawonderfultravelinLondon?Don'tmissthefollowing!CartoonMuseumThishighlyentertainingLondontouristattractioncoversthehistoryanddevelopmentofBritishcartoonsfromthe18thcenturytothepresentday.Youcanfindadetailedcollectionofalltypesofcartoonsinthismuseumincludingcaricatures讽刺漫画andrareexamplesofcartoonart;it'sanidealplacetoentertainkidsofallagesaswellasaseriouscollectionforanimationenthusiasts.Thereareoverninehundredpiecesonexhibitandthemuseumregularlyholdseventswherebothchildrenandadultscanparticipate.BookingfortheseeventsisrecommendedduetothepopularityyearroundofthisLondonMuseum.Telephone:02075808155ChislehurstCavesChislehurstinLondonishometochalkcavesthatwereminedbyhandforover8000years.AtourofthesecavesisanexcitingwaytoseehowBritishpeoplehaveimpactedontheirenvironmentoverthousandsofyears.Telephone:02084673264TheOldOperatingTheatreMuseumTheOldOperatingTheatreMuseumisoneLondonmuseumofferingafascinatinginsightintothemedicalprofessionofthepast.This300﹣yearoldherbgarret阁楼isBritain'sonlysurvivingoperatingtheatrewithawoodenoperatingtableandanobservationstandfromwhichvisitorscanwitnesssurgeryperformed.Telephone:02071882679CurzonMayfairCinanaMuseumRecentlyvotedoneofLondon'sbestcinemasbyTimeOutreaderstheCurzonMayfaircinemaiseverythingyouwouldexpectfromthisparticularpartoftown:luxurious奢华的andtasteful.Showingmostlyart﹣houseandindependentfilms.theCurzonMayfairisuniqueintheworldofLondoncinemaforitsroleinscreeningthesefilmsforindustryandpress.Telephones033332101041WhatcanwelearnfromtheCartoonMuseum?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.
Visuallanguageisaformofcommunicationthatusesvisualelements元素asopposedtoformalwrittenlanguagetoconveymeaningoranideaGraphicacytheabilitytocommunicatevisuallyisconsideredasimportantasliteracyandnumeracytheabilitiestoreadandcount.Somepeoplearevisualthinkersusingthatpartofthebrainthatisemotionalandcreativetoprocessandgivemeaningtoinformation.Visualcommunicationcanfindexpressioninpaintingsdrawingssymbolsorsimplylinesandshapesarrangedforaspecificeffect.Artisanexampleofvisuallanguage.Apaintingorsculpturecanconveyideasorarousespecifickindsofemotionalresponses.Itmayalsoexpressideasabouthistoricaleventsabstractconceptsorsimplybeaboutthewaycertainshapesorforms'work'togetherorcreateacertaineffectonthemind.Someresearchersbelievethatdifferentpartsofthebrainrespondinuniquewaystocolorsandshapes.Pictograms象形文字andideograms表意文字aretypesofvisuallanguage.Pictogramsarepicturesthataresimilartowhattheyrepresent.Theyarestillusedtodaytocommunicateinformation.Manypeoplearoundtheworldarefamiliarwiththepictogramsindicatingsuchthingsasairportspublicfacilitiesandnon﹣smokingareasindicatedbyacigaretteinacirclewithalineacrossit.Ideogramsarepicturesthatrepresentideasandcanoftenbeunderstoodwithouttheaidofwrittenlanguage.SomescholarstrackmodernalphabetstopicturesLettersareactuallyancientpicturesandwordsareaseriesofpictures.Modernalphabetlettersarenotonlyphonetic语音的symbolsbutarebasedonancientreligiousimagesandsymbols.Musivisualcommunicationisalsoapartofvisuallanguage.Thetermreferstomusiccreatedspecificallytoimprovethevisualexperienceoffilm.Itcorrespondstotheimagesbeingseenonthescreenandthemusicmayarouseasenseofterrorfearorotheremotions.Mostmoviegoersunderstandthelanguageofmusicalcluesshowingthatsomethingdramaticorimportantisabouttohappen.1Whatisvisuallanguageaccordingtothetext?A.Anideaconveyedbyartists.B.Anabilitytoreadandcount.C.Asystemusedtoarouseemotions.D.Awayofprocessingandexpressinginformation.2Whatmaybetheoriginofthemodernalphabetletters?A.Publicfacilities.B.Imaginarylines.C.Religiousimages.D.Livingconditions.3Whatcanwelearnaboutthemusicofafilmfromthelastparagraph?A.Itcanhelppredicttheplot.B.Avisualthinkercanmakeitbetter.C.Itoftenchangeswithouttheaudience'snoticeD.Itmakesthefilmmoreemotionalandcomplex.4Whatcanbethebesttitleofthetext?A.HowdoesVisualLanguageAffectLife?B.HowcanWeLearnVisualLanguage?C.WhatIstheOriginofLanguage?D.WhatIsVisualLanguage?
FormepersonallyIcouldwritefordaysaboutmanydifferentsituationswhereadversity逆境1mylife.NowletmetellyouoneexperiencewhereIalmostletadversity2.Wehadaglassstudiowhichwaslocated50feetfromourhome.Acoupleofyearsagoweexperiencedan3winter;wehadalotofsnowandice.The4oftheiceandsnow5theroofonourstudiotakingwithitoneofoursourcesofincome.6itdidfalldownwegotontheroofandtriedto7thesnowandicebutwhenyouhave5feetoficeandtemperaturesofminus20Celsiusitwaspretty8todo.Wehadapartnercomeintohelpustryto9theroofbysupporting.Intheendtherewas10thatcouldbedone.Theroofcamedown.Wehadmovedalotofourgoodsandtoolsfromthestudio11welostalotalso:glasskilnsworkbenchestonameonlyafewoftheitems.Itwasa12experience.Herewewereinthemiddleofwinterwithourstudiocollapsed.Wecouldn'tworkaswehadalmost13allthematerialsinabuildingwewerenotusing.Wecouldhavedoneoneofthetwothings:wecouldsimplysaythatwecannolonger14ourglassbusiness.Letmetellyouthatthiswascertainlythoughtthat15ourmind.Orwecouldfindawaytogetourstudiobackupandrunning.Wepickedthe16option.Wehadalargebarnthatwewerenotusing.Sowerenovated翻新thebarn17ourworkingareaandtodaywehaveanicerstudiothanwe18had.Iftheadversitywewere19hadnothappenedweprobablywould20beworkingintheoldstudio﹣astudiothatwaslessefficient.1A.influenced B.promoted C.protected D.prevented2A.suffer B.escape C.work D.win3A.awful B.wonderful C.aware D.awkward4A.size B.height C.temperature D.weight5A.limited B.destroyed C.pressed D.struck6A.Unless B.Before C.Although D.When7A.remove B.reduce C.recycle D.replace8A.worthwhile B.rewarding C.tough D.annoying9A.examine B.test C.restore D.secure10A.nothing B.enough C.all D.something11A.for B.or C.but D.so12A.vain B.happy C.exciting D.disastrous13A.displayed B.arranged C.presented D.piled14A.predict B.inform C.conduct D.quit15A.approached B.cleared C.crossed D.comforted16A.former B.latter C.easier D.further17A.evaluated B.organized C.redesigned D.reserved18A.previously B.hopefully C.eventually D.desperately19A.concernedabout B.facedwith C.cautiousabout D.awareof20A.still B.ever C.even D.already
Atouringdigitalexhibitionofaformeremperors'residenceistokickoffinlateApriltheBeijing﹣sPalaceMuseumalso1knowastheForbiddenCityandShenzhen﹣basedculturalcompanyArtronannouncedonFriday.Theexhibitionwillusevirtual2real.andartificialintelligenceamongmanyothertechnologiesto3wellintroducethefruitsofacademicresearchonYangxinDiantothepublic4digitallypresentingtheabundantcollectionofculturalrelicsandofferinteractiveexperiencestovisitors.Thehallbuiltinthemid﹣16thcenturyduringtheMingDynastywasalso5residenceoflasteightemperorsoftheQingDynasty.Anditisoneofthemostimportant6buildintheForbiddenCity7wasChinasimperialpalacefrom1420to1911.YangxinDian8shuttothepublicsinceDecember2015foramajorrenovation维修.HoweveritsculturalrelicshavebeenexhibitedincitieslikeShenzhenandHongKong.Therenovationistolastuntil2020.Meanwhile9offeramorelmmersiveexperiencetovisitorsthePalaceMuseumdevelopedthedigitalexhibitionin2017presentedinthemuseum'sdigitalgallery.In2018itwasshownattheArtronArtCenterinShenzhenattractingabout10000visitorsovertwomonths.TheupcomingexhibitiontourwillstartfrominL+MallinShanghai10thelaterdestinationsofthetourhaven'tbeenannounced.
SignsofEatingDisorderAbout30millionAmericanslivewithaneatingdisorder.1Yetmanyothersareoftenhiddeninplainsight.It'simportanttoknowthesymptomsinthosewhomightbeatriskforaneatingdisorder.They'reconstantlytalkingaboutdieting.Thediscussionaroundchangingeatinghabitsisincrediblycommon.Lookatanylifestylemagazineorwebsiteandyou'lllikelyfinddietingtipsandadvice.2Ifsomeoneyouloveisconstantlytalkingaboutfoodortheirdietinghabitsitmightbeasignofconcern.3Changesinmoodorbehaviorssurroundingfoodorexercisecanbesignsofconcern.Thiscouldmeanaswitchinactivitylevellikeoverexercisingtoooftencountingcaloriesfrequentlyvisitingthebathroomaftereatingfastingoreatingtoomuch.4They'reconstantlyturningdownfood﹣centricsocialgatherings.Avoidingsocialinteractionssuchasbirthdaypartiesorgoingouttodinnerwithfriendsisasignificantdangersignal.Peoplelivingwiththeconditionhaveanintensefocusonfoodorbodyimage.Theywillkeepawayfromsituationslikelyonesthatoncebroughtthemjoy﹣wherethatdeterminationmightbetested.Thebestwaytosupportsomeonewhomaybeexperiencinganeatingdisorderisbytalkingwiththembutwhenandhowyoudoitmatters.5Approachthemwithloveandcompassionletthemknowthatyoucareaboutthemandthatyounoticethatthereissomethingtheymaybestrugglingwith.A.Thisalsomightcomewithanoticeableweightlossorgain.B.Howeverbeingtrappedinthatdiscussionisadifferentstory.C.Theirfitnessoreatinghabitsareconstantlyoutoftheordinary.D.Moodchangesassociatedwitheatingmayalsobeadangersignal.E.Itshouldbeawayfromthenormalroutineandoutsideofamealtime.F.Somesymptomsofaneatingdisordermaybemorevisibletotheeyes.G.Eatingdisordersareagroupofconditionsmarkedbyanunhealthyrelationshipwithfood.
今年是门捷列夫发现元素周期律150周年．下表是元素周期表的一部分WXYZ为短周期主族元素W与X的最高化合价之和为8．下列说法错误的是
环戊二烯是重要的有机化工原料广泛用于农药橡胶塑料等生产．回答下列问题 1已知g═g+H2g△H1＝100.3kJ•mol﹣1① H2g+I2g═2HIg△H2＝﹣11.0kJ•mol﹣1② 对于反应g+I2g═g+2HIg③△H3＝kJ•mol﹣1． 2某温度下等物质的量的碘和环戊烯在刚性容器内发生反应③起始总压为105Pa平衡时总压增加了20%环戊烯的转化率为该反应的平衡常数Kp＝Pa．达到平衡后欲增加环戊烯的平衡转化率可采取的措施有填标号． A．通入惰性气体B．提高温度C．增加环戊烯浓度D．增加碘浓度 3环戊二烯容易发生聚合生成二聚体该反应为可逆反应．不同温度下溶液中环戊二烯浓度与反应时间的关系如图所示下列说法正确的是填标号． A．T1＞T2 B．a点的反应速率小于c点的反应速率 C．a点的正反应速率大于b点的逆反应速率 D．b点时二聚体的浓度为0.45mol•L﹣1 4环戊二烯可用于制备二茂铁FeC5H52结构简式为后者广泛应用于航天化工等领域中．二茂铁的电化学制备原理如图所示其中电解液为溶解有溴化钠电解质和环戊二烯的DMF溶液DMF为惰性有机溶剂． 该电解池的阳极为总反应为．电解制备需要在无水条件下进行原因为．
Bootcamp﹣stylefitnessclassesaretakingNewYorkCitybystormandevensoldierssaysomeoftheseexercisesareharderthanthebasictrainingtheyexperienced.Theseclassescondense压缩90daysoftrainingintoanhour﹣longclass.'It'smuchmorechallengeableinthatyoudon'thaveabreak'saysChadVincent37.Soifyouwantaworkoutthatwillhelpyoubeallyoucanbeherearesomegoodchoices:CircuitofChange57W.16thSt.212255﹣0053Thebase:Thisclass﹣foundedbyBrianDelmonicoin2011﹣helpsNewYorkersfindpeaceofmind.Marchingorders:Theone﹣hourfocusdoesn'tmeanyouwon'tsweat.Expectamixofgymnasticsandyogaindoorswhileoutdoorclassesincluderunningandjumpingoverbenchesandasmallwall.WarriorFitnessBootCamp29W.35thSt.212967﹣7977Thebase:Monkeybarsandhangingropesdecoratethisspacewhereacrewoffivenot﹣afraid﹣to﹣shoutinstructorsdohelp.Marchingorders:ThisworkoutmodeledafterrealbootcampsisasauthenticasitgetsaccordingtoformerMarineSgt.海军中士RubenBelliard.'Westaytruetothefactthatthisiswhatwewentthrough'hesays.Classesincludeaseriesof90﹣seconddrillsthatrequireteamworktocomplete.Stacy'sBootCamp646537﹣5466;stacysbootcamp.comThebase:StacyBermanturns17yearsofkickboxingexperienceintoaseriesofoutdoorbootcampsinCentralParkandBatteryPark.Marchingorders:ThreeweeklyclassesstartintheearlymorningaccordingtoLieslMarelli.Uncertaintyisabigpartoftherecipe.'Youdon'tknowwhatshe'sgoingtothrowatyouthatday'saysMarelli.BrickNewYork257W.17thSt.;bricknewyork.comThebase:ThispopularLosAngelesCrossFitgymopenedthismonthandinstructorWillLanierisalreadybeginningtotrainNewYorkerswithbootcamp﹣stylerunsandoutdoorworkouts.Marchingorders:ThelO﹣minutewarm﹣uprunwillfeeleasybeforeLanierstartshis'60﹣minuteworkout.'AlsodifferentformbootcampBrickwillsoonofferyogaclasses.1WhatisspecialaboutStacy'sBootCamp?A.Ithelpstofindinnerpeace.B.Thewarm﹣upactivityiseasy.C.Ithasaveryflexibleschedule.D.Theinstructorsareextremelystrict.2Whichofthefollowingclassesneedsmoreteamspirit?A.WarriorFitnessBootCamp.B.Stacy'sBootCamp.C.CircuitofChange.D.BrickNewYork.3Whatisthepurposeofthetext?A.Toencouragereaderstodomoreindoorexercises.B.Torecommendseveralbootcamp﹣stylefitnessclasses.C.Topersuadereaderstojoinbootcamp﹣stylefitnessclassesD.Tointroducetheadvantagesofbootcamp﹣stylefitnessclasses.
Hotshotjetpilotsarenomatchforcliffswallows.ThebirdsrocketoverbridgesandskimoverlakesrushingforwardataccelerationsthatwouldknockanAirForce.Bytrackingthesecontestswithhigh﹣speedcamerasanewstudygivesthefirstin﹣depthpeekintoavianaerodynamics鸟类空气力学inthewild.'Thefindingsmayevenprovideinsightintohowtodesignbettermicroairvehicles﹣tinydrones.Thistechnologywillbebrilliantlyuseful'saysbiomechanicsexpertJimUsherwoodoftheUnitedKingdom'sRoyalVeterinaryCollegeinHatfield..'High﹣resolutionfieldstudieslikethishaveneverbeendonebeforeforbirds.'ForcliffswallowsthetroublestartswhentheyreturnfromwinteringinSouthAmericatotheirsummerhomesinNorthAmerica.Afterarrivaltheyseekouttheiroldmudnests﹣usuallylocatedunderconcretebridgesandfreeways﹣andstartrebuildingtheirhomes.Butratherthanhuntdownafreshsupplyofmudsomeswallowspreferstealingsuppliesfromtheirmorehardworkingneighbors.Otherstakethingsfurtherandwillevenlayaneggortwointheirneighbor'snestbeforetakingoff.Battlesintheairfollowiftheinvadersarecaughtintheactandanewstudytakesadvantageofthesefightstolearnhowbirdsperformhigh﹣speedmaneuvers演习.TheteamplacedthreecamerasalongaNorthCarolinalakecrossedbyahighwaybridgethathousesseveralcliffswallownestsandwaitedforthebattlestocommence.Theteamwassurprisedtolearnthatmostofthetime*chaserscopiedthemoveoffleeinginvaders.Swallowsalsopullveryhardturnstoescapeanenemy*withoneextremecasereaching＝7.8gravity.Fighterpilotsusuallypassoutatabout5or6gravitywhichiswhytheseexperimentshaveearnedinterestandpartialfundingfromtheOfficeofNavalResearch.TheNavymayusethefindingstobuildbetterguidancesystemsformicroairvehicles.Howevertheswallowsbiomechanicsarecomplexandnowtheteamissimplytryingtocollectafewtricks.1WhydidtheUsherwoodcarryoutthestudies?A.Toguideabetterdesignofairvehicles.B.Toprovetheswallowsarebetteratflying.C.Toexperimentwithitshigh﹣speedcameras.D.Totrackhowtheswallowsskimoverlakes.2Whatleadstothebattlesamongthebirds?A.Sharingfood.B.Occupyingothers'nests.C.Seizingmudfornesting.D.Competingfortheuseofbridges.3Whichcanbestreplacetheunderlinedword'commence'inparagraph3?A.continueB.accelerateC.endD.begin4Whatisthetrickoftheswallowtoescapeitsenemy?A.Acceleratingtowardit.B.Copyingwhatitsenemydo.C.MakingsharpturnsduringflightD.Seekingforhelpfromitsfellows.
Thewaypeopleholdtothebeliefthatafun﹣filledpain﹣freelifeequalshappinessactuallyreducestheirchancesofeverattainingrealhappiness.Iffunandpleasureareequaltohappinessthenpainmustbeequaltounhappiness.Butinfacttheoppositeistrue:moreoftenthannotthingsthatleadtohappinessinvolvesomepain.Asaresultmanypeopleavoidtheveryattemptsthatarethesourceoftruehappiness.Theyfearthepaininevitablybroughtbysuchthingsasmarriageraisingchildrenprofessionalachievementreligiouscommitmentselfimprovement.Askabachelorwhyheresistsmarriageeventhoughhefindsdatingtobelessandlesssatisfying.Ifheishonesthewilltellyouthatheisafraidofmakingacommitment.Forcommitmentisinfactquitepainful.Thesinglelifeisfilledwithfunadventureexcitement.Marriagehassuchmomentsbuttheyarenotitsmostdistinguishingfeatures.Coupleswithinfantchildrenareluckytogetawholenight'ssleeporthree﹣dayvacation.Idon'tknowanyparentwhowouldchoosethewordfuntodescriberaisingchildren.Butcoupleswhodecidenottohavechildrenneverknowthejoysofwatchingachildgrowuporofplayingwithagrandchild.Understandingandacceptingthattruehappinesshasnothingtodowithfunisoneofthemostliberatingrealizations.Itliberatestime:nowwecandevotemorehourstoactivitiesthatcangenuinelyincreaseourhappiness.Itliberatesmoney:buyingthatnewcarorthosefancyclothesthatwilldonothingtoincreaseourhappinessnowseemspointless.Anditliberatesusfromenvy:wenowunderstandthatallthosewhoarealwayshavingsomuchfunactuallymaynotbehappyatall.1Accordingtotheauthorabachelorresistsmarriagechieflybecause.A.heisreluctanttotakeonfamilyresponsibilitiesB.hebelievesthatlifewillbemorecheerfulifheremainssingleC.hefindsmorefunindatingthaninmarriageD.hefearsitwillputanendtoallhisfunadventureandexcitement2Raisingchildrenintheauthor'sopinionis.A.amoraldutyB.arewardingtaskC.athanklessjobD.asourceofinevitablepain3Fromthelastparagraphwelearnthatenvysometimesstemsfrom.A.HatredB.misunderstandingC.PrejudiceD.ignorance4Whatistheauthortryingtotellus?A.Happinessoftengoeshandinhandwithpain.B.Onemustknowhowtoattainhappiness.C.Itisimportanttomakecommitments.D.Itispainthatleadstohappiness.
“春蚕到死丝方尽蜡炬成灰泪始干”是唐代诗人李商隐的著名诗句．下列关于该诗句中所涉及物质的说法错误的是
分子式为C4H8BrCl的有机物共有不含立体异构
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. MycousinLiMingtoldmehewouldbetakinghisdriver'stestagain.Heseemedconfidencealthoughhehavefailedhisfirstroadtest.Ifeltsympathyforhimthinkhemighthaveasamefearhedidlasttime.IencouragedhimthoughIwasnotsooptimisticabouttheirchances.Lateronhecalledsharethegoodnewsthathehadpassedit.Beforetheroadtestourfamilygatheredexcitedathishouse.Icongratulatedhimwithahug.Iaskedhimtodrivewithmeanywhereheliked.ThreeofourcousinpiledinwithusandwetookourfirstridewithLiMing.
Officefurniturelikechairsandsofasshouldbeattractiveaswellascomfortable. A.manually B.visually C.physically D.securely
﹣IsitenoughtofinishtheformforapassportMadam? ﹣Yourpassportapplicationformshouldbebytworecentphotos. A.updated B.accompanied C.established D.identified
Arecentstudyfoundthatpeoplewholiveincolderclimatesconsume1muchalcoholthanpeoplewholiveinwarmweather.'Alcoholissomethingthateveryonethoughtharmfulfor2decadebutnoonehasscientificallydemonstratedit'aprofessorwroteinapressrelease.WhydopeopleinRussiadrinksomuch?Everybody3assumethat'sbecausetheweatheriscold.Butwecouldn'tfindasinglepaper4linkclimatetoalcoholintake.Sincealcoholcouldincreasewarmbloodflowintheskinlastmonththeresearchersinastudy5suggestthatpeopleshouldreachforbooze豪饮whenit'scoldoutside.Theresearcherscombedthroughdatatocompareclimatefactorsandalcoholconsumptionpercapita每人的.6studyalsofoundthatastemperaturesandsunlighthoursdecreasealcoholconsumptiongoesup.Shorterhoursofsunlightandcoolertemperaturesalsorelate7higherratesofdepression8islinkedtoanincreaseindrinking.Theprofessorhopesthisdatawillhelpinfluencehealthpoliciesonalcoholabuse.'Knowingthatcolderplaceshavemoredrink﹣relatedproblemscouldbe9helptotheeffortsintheseareas10determinebetterpolicies'hesaid.
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