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简介：话题呈现假设你校英语论坛正在针对“中学生是否应该做兼职”这个话题进行讨论,请根据下面的提示写一个帖子发表在该论坛上。要求:1.词数80~100。2.文中不能出现自己真实的姓名和所在学校的名称。

简介：Objective:Todescribethedifferentcharacteristicsbetweenfull-timesexworkers(FTSW)andpart-timesexworkers(PTSW)inGuangzhou,China,andtode-terminetheriskfactorswhichleadtothesignificantlyhigherprevalenceofgonorrheaandtrichomoniasisamongFTSW.Methods:FromMarch1998toOctober1999femalesexworkerswererecruitedthroughvariousoutreachmethods,andwereinterviewedandtestedforthepres-enceofsexuallytransmitteddiseases(STDs).IntermsofadditionalregularsalaryfemalesexworkersweredividedintoFTSWwhodidn'thaveadditionalregularsalaryandPTSWwhohadadditionalregularsalary.Univariateandmultivariatelogisticregressionanaly-seswereusedtoidentifyriskfactorsforgonorrhea/trichomoniasisandtodeterminetheconfoundersintherelationshipbetweennoregularsalaryandgonor-rhea/trichomoniasis.Results:Atotalof442FTSWand524PTSWen-teredthisstudy.Prevalenceofgonorrheaandtri-chomoniasiswassignificantlyhigherinFTSWcomparedtoPTSW.FTSWweremorelikelytohavealowereducationlevel,haveahistoryofinject-ingdrugsusesince1990,torecruitclientsinamas-sage/sauna,havebusinessmenastheirclientsandnothaveasteadypartnercomparedtoPTSW.Inbivariateanalysesmodels,ageleavingeducation,maintypesofclientsandrecruitmentlocationsappearedtobethestrongestlinksbetweennoregularsalariedpositionandgonorrhea.Ahistoryofinjectingdrugsandhay-ingnosteadypartner(past12months)appearedtobethestrongestlinksintherelationshipbetweennoregu-larsalariedpositionandtrichomoniasis.Conclusion:Differenteducationlevels,clients,andrecruitmentlocationsbetweenFTSWandPTSWmayaccountforthedifferentgonorrheaprevalenceamongsexworkers.Thehigherprevalenceoftrichomonia-sisamongFTSWmayberelatedtothelargerpropor-tionofwomenhavingnosteadypartnerorahistoryofinjectingdrugs.TheresultssuggeststrategiestopreventHIV/STDsamongfemalesexworkersshoul

简介：Directtime-domainsimulationoffloatingstructureshasadvantages:itcancalculatewavepressurefieldsandforcesdirectly;anditisusefulforcoupledanalysisoffloatingstructureswithamooringsystem.Atime-domainboundaryintegralequationmethodispresentedtosimulatethree-dimensionalwaterwaveradiationproblems.Astableformoftheintegrationfree-surfaceboundarycondition(IFBC)isusedtoupdatevelocitypotentialsonthefreesurface.Amulti-transmittingformula(MTF)methodwithanartificialspeedisintroducedtotheartificialradiationboundary(ARB).Themethodwasappliedtosimulateasemi-sphericalliquefiednaturalgas(LNG)carrierandasemi-submersibleundergoingspecifiedharmonicmotion.NumericalparameterssuchastheformoftheARB,andthetimeandspacediscretizationrelatedtothismethodarediscussed.Itwasfoundthatagoodagreementcanbeobtainedwhenartificialspeedisbetween0.6and1.6timesthephasevelocityofwaterwavesintheMTFmethod.Asimulationcanbedoneforalongperiodoftimebythismethodwithoutproblemsofinstability,andthemethodisalsoaccurateandcomputationallyefficient.

简介：一、教材分析本节课的故事围绕本单元的话题Friends展开，渗透了朋友间应友爱、团结、互助的理念。故事内容为：小兔子发现了一棵大萝卜，但她拔不动，于是她的朋友小猴、小狗、小猫、Zip和Zoom都来帮忙，最后终于把大萝卜拔了出来。

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简介：近年来冠词的常考点是：1．不定冠词a、an的用法。a和an的选用不是看后面单词的首字母，而是看后面其词头的发音，如是元音开头，就用an，辅音开头则用a。

简介：1．概数(即约数)的表示法。A.hundreds/thousands/millionsof.B.around/moreorless/about+确切数。C.数词+orso.D.above/morethan/over+数词。E.almost/below/lessthan/under+数词。

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简介：1.IntroductionAnyoneworkinginasystemselectromagneticcompat-ibilityenvironmentisusuallypainfullyawareofthefactthat,often,theweakestlinkinthesystemisthecabling.Whetherthisisthecableortheconnectorsthemselves,ormorelikelytheinterfacebetweenthecableandtheconnectorswheretheremaybeapoorconnectionofthecablescreen,theabilityofcablingtoleakorabsorbspurioussignalsisacauseofmuchEMCfrustration.ThissectionwilladdressthebasisofthecablingrelatedEMIphenomenonandthebestcablingpractice.

简介：主要考查并列连词(but、and、so、or等)和从属连词(if.when.what.who.because,after,assoonas.though,as等）。

简介：关于副词应注意以下几点：1．副词在句子中的位置。A．当副词修饰整个句子时．其位置比较灵活，可以放在句首或句尾，也可放在被强调部分前。B．当副词修饰句中的动词时，句中动词若是及物动词．则副词放在宾语后，句中动词若是不及物动词时．则常在动词后。频度副词可放在句首．但更多的是放在实义动词之前、助动词或情态动词之后。

简介：复习介词时应注意以下几点：1．要细心辨别同一个介词在不同语境中的不同含义，注意比较、归纳．于细微处见差别。

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简介：1．关于反身代词应注意其与动词的固定搭配，能这样用的动词及动词词组有：enjoy,help.hurt.teach,wash.lookafter,dress,lose.relax,introduce,burn.improve,keep及bepleasedwith.beangrywith等。

简介：复习动词时要注意以下几个问题。1．动词的时态问题。A．一般现在时，主语是单数第三人称时，谓语动词也要用第三人称单数形式。

简介：Male,ageof27years.Historyofthepresentdisease:Intherecentthreeweeks,thepatienthasthesymptomsincludingtiredness,difficultfallinginsleepevensleeplessnessduringwholenight,accompaniedwithrestlessness,palpitation,poorappetite,amnesia.

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