简介：近日，世界首款氢燃料电池火车在德国正式开跑。这款以氢为能源的火车最高的时速可达140千米，可以覆盖1000千米的邮箱。氢动力客运列车最突出的亮点是环保。一方面，氢气在车体内经过燃烧后只排出水蒸气，对空气不会造成任何污染，实现了有害物质的“零排放”；另一方面，相比柴油动力火车，新能源火车在降低噪声污染上也具有相当大的优势。

简介：所谓ideas是指——有趣的ideas，新面貌的ideas，使人幸福的ideas，具有实用性的ideas，站在顾客角度的ideas，为生活带来贡献的ideas，带来惊奇与新发现的ideas。

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简介：TheChineseAssociationforInternationalUnderstanding(CAFIU)isanNGOaimingat"lettingtheworldunderstandChina,andlettingChinaunderstandtheworld".Sinceitsestablishmentin1981,CAFIUhasbeendevotedtopromotingmutualunderstandingandfriendlycooperationbetweentheChinesepeopleandpeoplesofothercountries.Inrecentyears,CAFIUhasmadepositiveprogressinenhancinginternationalunderstanding

简介：如果你和某人有约会，他可能迟到，因为他可能不想准时到达。本句是以because引导的原因状语从句的复合句，becausd引导的原因状语从句一般放于主句之后，because表示直接原因，语气最强，最适合回答why引导的疑问句。

简介：Basedontheknowledgelearningsystemof＂self-centered＂,aclassicalGermanidealistphilosopher,JohannGottliebFichte,describedhisideasofhighereducationindetail,includingthenatureofuniversities,theacademicfreedom,andthemissionofuniversityteachers.Hebelievedthateachuniversity,asaninstitutionwithteachersandstudentsasitscomponentssettingupforthecontinuationofhumanintelligence,shouldalwaysstickto＂academicfreedom＂.＂Academicfreedom＂isthenatureoftheexistenceofuniversities,andteachersareregardedasinheritorsofsacredideas,communicatorsofacademicknowledge,andguidersofmoraldirections.Theresearchfindingsofthispapercanbeausefulreferencefortheworldwidehighereducationresearch.

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简介：IntroductionLead-inmeanstointroducestudentsgentlytotopicstheyaregoingtodealwith,settlethemdownatthebeginningofalessonandgenerallypreparethemforthetopic.Usinglead-insinlanguageteachingisnotanewidea.Someofthemorerecenttextbooks,notably‘StepbyStep’,andotherteachers’books,havewarming-upexercisesandculturalbackgroundinformationwhichteacherscanuseaslead-in.However,formanyyears,becauseofalackofsuitabletraininginteachingmethodology,manyEnglishteacherstendedtoneglectlead-in,thefirststepinpresentingatext,andwentdirectlyintothetextitself.Thestudentswereconfrontedwithsomethingtheyknewnothingabout,andhadnoparticulardesiretoknowabout.Theywereexpectedtoadjustthemselvestotheteachingcontext.

简介：AftertheSeptember11events,theinternationalpatternandgreatpowerrelationshavereadjusted.Theimportanceofnon-traditionalsecurityfactorsininternationalpoliticsriserapidly.Thehomelandsecurityissuethatvarioussovereignstatesareconfrontinghasbecomeprominent.Thesechangesre-challengethetraditionalsecurityconcept.

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简介：BorninBeijingonNovember26th1944,Mr.CuiRuzhuotaughtintheCentralAcademyofArtandDesigninthenation'scapitalbeforeemigratingtotheUnitedStatesofAmericain1981.HewasappointedvicepresidentoftheInstituteofAdvancedStudiesofChineseArtinNewYorkandworkedasavisitingprofessoratJohnDeweyUniversity,wherein1984hewasawardedanhonoraryDoctorofArtsdegree.HeisnowtheChairmanoftheHongKongInternationalArtistsAssociationandtheChairmanoftheHongKongCuiRuzhuoArtFoundation.

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简介：Thisarticlegraspstheimplicationofecologybasedonthetheoryofgreenway,WiththepurposeofmakingZhejiangProvincebecomeanecologicalprovince,itpointsoutthattheproblemsexistinthegreenwayconstructionandmakesitclearthatthegreenwayconstructionisveryimportant.Furthermore,incombinationwiththelineargreenopenspaces,suchasgreeningpassages,touristareas,andadministrationfacilitiesinZhejiangProvince,thisarticleputsforwardthestrategicideasofthegreenwaysconstructionandthestrategies,measurestoapplythegreenwaysconstruction.

简介：DoesthetraditionalChinesecultureembracehumanrights?Ifso,inwhatways?Questionsofthissortarenotonlyofacademicconcernbutalsoofpublicinterest.Withthisinmind,YunXianghadaninterviewwithProf.HuangNansenofBeijingUniversity,afamousChinesescholarinthestudiesofhumanityandtraditionalculturesandvalues.

简介：很多人认为法国人很臭、很懒、很粗鲁、拒绝说英语,但真相到底如何？

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简介：1.IntroductionForanyonepayingattention,thisisadisruptivetimeinscienceingeneralandinhealthpromotionscienceinparticular.Obesityisthemostprevalentnutrition-relatedhealthproblemaroundtheglobe.Theissueofwhether,asiscommonlythought,obesityiscausativeofearlymortalityorwhetheritisonlyamarkerofriskhasbeenraised.Thelackofsubstantialandmaintainedchangeinchildobesitypreventionhasbeenrecognized,andnumerouslimitationsinourconceptualandmethodologicalapproachtoobesitypreventionhavebeenidentified.

简介：利用IDEAS软件对螺杆轴进行实体建模、静力学分析和动力学分析,计算其应力、前十阶的固有频率,画出振型图

简介：HenryDavidThoreauandJamesFennimoreCooperareregardedasrepresentativesofAmericanRomanticism.Andacloseanalysisoftheirmasterpiecesrevealsquiteafewecologicaltracesinthem.Bycomparingtheirwritingstyleswitheco-literatureinAmerica,thepresentpaperfindsthattheyhavealotincommon.Baseduponthis,itistobebelievedthattheromanticisminthe19thcenturyofAmericabreedsthelaterecologicalliterature.