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简介：时间:星期天早晨地点:动物王国人物:C—MissCatD—LittleDuckG—MrDogN—NarratorR—MissRabbit适用年级:小学中年级词汇和句型:主要词汇:kind,breakone’sleg,run,walk,get,read,getwell主要句型:Don’tworry./Letmehelp

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简介：Awomanwithanemptybasketiswalkingalongthebankofariver.Ohdesr!Look!Herbasketslipsandfallsintotheriver."Help!"Sheshouts,Mybasketfallsintothe

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简介：ValuatingthefunctionofecosystemservicesiscrucialforaccountinggreenGDP,makingaconserva-tionpolicyofecologicalenvironmentandthedecisionofregionaldevelopmentaswellassustainabledevelopmentstrategy.Rice-duck-fishsymbiosishasbeenpromotedinseveraldevelopingcountriesasawayofincreasingincomesforricefarmers,butinvestigationsofitsvaluehavemainlyfocusedondirecteconomicbenefits,suchasfoodandrawmaterialproduction.Fewstudieshavebeenconductedontheestimationofindirectservicesprovidedbyrice-duck-fishcomplexecosystem.Thegasregulationserviceanditseconomicvaluesprovidedbyrice-duck-fishcomplexecosystemwerestudiedinWuhan,China.ThemajorcomponentsofgasregulationareO2emissionandgreenhousegases(GHGs,CO2)regulation.TheresultsshowthatO2emissionfromdifferenttreatments(includingrice-duck(RD),rice-fish(RF),rice-duck-fish(RDF)andrice(CK))rangedfrom26,370kg/hato33,910kg/haperyear,withaneco-nomicvalueof10,050-12,920yuan/haperyear(Chinesecurrency:1euro=10.2475yuan,August28,2007).ThenetGHGsexchangevariedfrom1,200to3,320kg/haperyear,anditseconomicvaluerangedfrom1,040yuan/hato2,900yuan/haperyear.Consequently,thetotaleconomicvalueofgasregulationprovidedbysymbiosiscomplexecosystemsrangedfrom11,090yuan/hato15,820yuan/haperyear,andthemaximumoveralleconomicvalueofgasregulationwasprovidedbyRDFcomplexecosystem.Theworkwillbeusefulforfurtherunderstandingofthefunc-tionsofrice-duck-fishcomplexecosystemservicesandsupplyingthetheoreticalreferencestoagriculturalpolicy.

简介：DuckhepatitisBvims(DHBV)DNAwasdetectedindifferenttumorousnodulesofduckswithhepaticmulticentriccancerorintrahepaticmetastasisbySouthernblottechnique.Among7duckswithhepatocellularcarcinomaofmultipletumornodules,thehybridizationpatternofIntegratedDHBVDNAIndifferenttumorousnoduleswasidenticalin3casesanddifferentin2cases.OnecaseshowedasimilarhybridizationpatternintwotumorousnodulesandotheronewasnegativetorDHBVDNA.IntegratedDHBVDNAwasalsoidentifiedinametastaticlungcancerofduckswithhepatocellularcarcinoma.Thehybridizationpatternofmetastasisoflungswasasthesomeasthatinprimaryhepatocellularcarcinoma.ThesamediscretehybridizationbandsInthedifferenttumorousnodulesindicatethatthesenodulesmightarisefromonetransformedcell.ThedifferenthybridizationpatternsInvarioustumorousnodulesshowthatthesetumorousnodulesmightarisefromvarioustransformedcells.Theresultssuggestthatthehyb

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