简介：ChinaisrichinMiddleandCarboniferousfossilcorals.Thecoralfaunasindifferentregionshavevaryingcharacteristicsandcanbedividedintodistinctassemblages.ThecoralfaunainSouthChinaisdominatedbytheorderCaninidaandcontainsnumerousendemicelements;thatinNorthChinahasalotofMiddleCarboniferouscoralswhicharemonotonousinspecies,withLateCarboniferoussolitarycoralsbeingpredominant.ThecoralfaunainJunggarmainlycontainslargebi-zonedsolitarycaninids,whilethatinsouthernKhinganissimilartothatinSouthChinaduetothepresenceofabundanttri-zonedcompoundcorals.InnorthernTibetthecoralfaunaisalsosimilartothatinSouthChina,butinsouthernTibetitisofacold-watertype.Therefore,theMiddleandLateCarboniferouscoralgeographyofChinacanbedividedintotheTethys,BorealandGondwanaRealms.

简介：Toevaluatetheinfluenceofosteoporosisonthemiddleandlateperiodsoffracturehealingprocessthroughobservingthehistomorphologicalchanges,honemineraldensityandbiomechanicalpropertiesinovariectomizedrats.Methods:Eighty-fourfemaleSDratsof4monthsoldwererandomlydividedintoosteoporosisgroupandshamoperationgroup,42ineach.Ratsinosteoporosisgroupwereperformedovariectomyoperationwhilethoseinshamoperationgroupweregivenshamoperation.Amidshafttibiafracturemodelwasestablished10weeksafterovariectomy.Tibiaswereharvested2,4,6,12,18weeksafterfractureforbonemineraldensity,histomorphologicalandbiomechanicalevaluation.Results:Comparedwiththeshamoperationgroup,callusbonemineraldensitywas12.8%,18.0%,17.0%lowerinosteoporosisgroup6,12,18weeksafterfracture,respectively(P<0.05);callusfailureloadwas24.3%,31.5%,26.6%,28.8%lowerinosteoporosisgroup,andcallusfailurestresswas23.9%,33.6%,19.1%,24.9%lowerinosteoporosisgroup4,6,12,18weeksafterfracture,respectively(P<0.05).Inosteoporosisgroup,endochondralboneformationwasdelayed,moreosteoclastcellscouldbeseenaroundthetrabecula,andthenewbonetrabeculaarrangedlooselyandirregularly.Conclusions:Osteoporosisinfluencesthemiddleandlateperiodsoffracturehealingintheratosteoporoticmodel.Theimpairmentisconsideredtobetheresultofcombinedeffectsofprolongedendochondralcalcification,highactivatedosteoclastcellandthedecelerationoftheincreaseinbonemineraldensity.

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简介：两个调皮捣蛋、屡屡迟到、逃学但是非常聪明的学生在上学途中是如何机智勇敢地与超市抢劫犯周旋的呢?会发生多少扣人心弦的故事呢?他们最终是否因为迟到而受到惩罚呢?请看短剧——

简介：Teacher:Whyareyoulateforschool?Boy:ItwaslatewhenIstartedfromhome.Teacher:Thenwhydidn’tyoustartearly?Boy:Itwasalreadytoolatetostartearly,sir.注释:belateforschool上学迟到startv出发alreadyadv已经too…to太……以至于不能…

简介：(MrErnestBrown'sclassroominBill'sschool.Itishalfpasteleven,andMrBrownisgivingtheboysandgirlspaperforaGermantest.Itisveryquietintheclassroom.Suddenly,thedooropensandBillandSamcomein.)

简介：CorticosteroidsandimmunomodulatorshavebeenthemainstaytherapiesforCrohn’sdisease.Corticosteroidsarehighlyeffectivetocontrolsymptomsintheshort-term,buttheyarenoteffectiveinmaintainingremission,theyhealthemucosainareducedproportionofcases,andlong-timeexposureisassociatedwithanincreasedriskofinfectionsandmortality.Immunomodulators,azathioprineandmethotrexate,healthemucosainahigherproportionofpatientsthatcorticosteroidsbuttheironsetofactionisslowandtheybenefitlessthanhalfofpatientswithCrohn’sdisease.Inthelastdecade,medicaltherapyforCrohn’sdiseasehasexperiencedaremarkablechangeduetotheintroductionofbiologictherapy,andparticularlytheuseofanti-tumournecrosisfactor-alphaagents.Infliximab,adalimumab,andcertolizumabpegolhavedemonstratedefficacyforinductionandmaintenanceofremissioninactiveCrohn’sdisease.TheseagentshaveraisedthebarforwhatisasuitablesymptomaticresponseinCrohn’sdiseaseandmodificationofthenaturalhistoryofthediseasehasbecomeamajorgoalinthetreatmentofCrohn’sdisease.Thereareseveraldataintheliteraturethatsuggestthatearlyuseofbiologictherapyandachievementofmucosalhealingcontributetodiseasecoursemodification.However,manyquestionsonearlybiologicaltherapyforCrohn’sdiseaseremainstillunanswered.

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简介：WhatiswaitingaheadfortheMiddleEastpeaceisanythingbutasmoothsail-ing.ShortlyafterassumingpowerinJune,1996,BenjaminNetanyahu,leaderoftheIsraeliLikudgroup,switchedfromthestandoftheformerLaborPartygov-ernmentbyrejectingtheprincipleof"landforpeace".ThisthrewtheMiddleEast

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简介：ObjectiveTwoimportantgeologicalissueshavelongbeencontroversialintheXing–MengareaofNorthChina.ThefirstconcernsthefinalclosureofPaleo-AsianOceaninXing–Mengarea,andtheotherconcernsthefoldingandliftingoftheXing-MengTrough.ThefocusofthsesissuesistheLatePermiansedimentaryenvironment,whichis

简介：TheobjeetiveofthisbasicandtcctonicrcscarchistoclarifythocauscsofabsoluteuphcavalofJapancsclslandsinlatcPlcistoccnetoHoloccnoagcs.InmanyrcgionsofhighlandsofJapancscIslands,fiocksofcau1drons,lcssthan2okmindiamctcr,wcrcforn1edintcndiffcrcnttimcsduringMioccnctoPlioccnc-Quatcrnaryagcs(Fujita,l972,l99l).W

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简介：<正>1.IntroductionWhenaddressinglanguagecohesion,anattemptmustbemadetoidentifyhowlanguageisusedtocreatecohesiveandcoherentcommunication,orhowoneutterancefollowsanother.WilliamLabovdescribesthetaskathand,statingthat‘thefundamentalproblemofdiscourseanalysis1istoshowhowoneutterancefollowsanotherinarational,rulegovernedmanner—inotherwords,howwe

简介：I’mastudentfromLongkouMiddleSchool．ThethingsherewerebadwhenIbegantostudyinthisschoolovertwoyearsago．Therewasneitherenoughwaternorgreentrees．WhatWasworse,thestudentsdidn’thaveagoodconditiontostudy．

简介：Theyearmarksthe20thanniversaryoftheCentralGovernmentdecisiontorunTibetmiddleschoolsinthehinterland.Atpresent,therearesuchschoolsorTibetanclassesin26provincesandmunicipalitiesdirectlyundertheCentralGovernment.TheyworktotraintechnicalpersonnelandteachersforTibet.Launchedin1987,theBeijingTibetMiddleSchoolhassincetrainedmorethan2,800middleandhighschoolstudentsforTibet.ManyofthemreturnedtoTibetforconstruction.

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简介：ⅠTheyear1991witnesseddrasticchangesintheMiddleEast,whichbeganwiththeoutbreakoftheworld-shakingGulfWar(January17)andculmi-natedintheconveningofthespectacularMiddleEastPeaceConferenceinMadrid(October30),whichisthefirstface-to-facemeetingbetweentheArabcountries

简介：IcomefromLongkouMiddleSchool.TodayI'dliketosaysomethingaboutmyschool.