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原位溶血是指红细胞的破坏发生于
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原位溶血是指红细胞的破坏发生于
血管内
骨髓
脾
肝
淋巴结
原位溶血是指红细胞的破坏发生于
血管
骨髓
脾
肝
原位溶血时红细胞破坏的主要部位是
肝
脾
血
骨髓
以上都不是
原位溶血是指红细胞破坏场所在
骨髓
脾脏
肝脏
血管内
组织内
原位溶血时红细胞破坏的主要部位是
肝脏
脾脏
血
骨髓
以上都不是
原位溶血表明红细胞破坏主要是在
血管内
骨髓
肝脏
脾脏
原位溶血表示红细胞的破坏主要在
骨髓
血管内
组织中
肝脏
脾脏
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Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
Thatexperiencesinfluencesubsequentbehaviourisevidenceofanobviousbutneverthelessremarkableactivitycalledremembering.Learningcouldnotoccurwithoutthefunctionpopularlynamedmemory.Constantpracticehassuchaneffectonmemoryastoleadtoskilfulperformanceonthepianotorecitationofapoemandeventoreadingandunderstandingthesewords.So-calledintelligentbehaviourdemandsmemoryrememberingbeingaprimaryrequirementforreasoning.Theabilitytosolveanyproblemoreventorecognizethataproblemexistsdependsonmemory.Typicallythedecisiontocrossastreetisbasedonrememberingmanyearlierexperiences. Practiceorreviewtendstobuildandmaintainmemoryforataskorforanylearnedmaterial.Overaperiodofnopracticewhathasbeenlearnedtendstobeforgotten;andtheadaptiveconsequencesmaynotseemobvious.Yetdramaticinstancesofsuddenforgettingcanbeseentobeadaptive.Inthissensetheabilitytoforgetcanbeinterpretedtohavesurvivedthroughaprocessofnaturalselectioninanimals.Indeedwhenone’’smemoryofanemotionallypainfulexperienceleadstoseriousanxietyforgettingmayproducerelief.Neverthelessanevolutionaryinterpretationmightmakeitdifficulttounderstandhowthecommonlygradualprocessofforgettingsurvivednaturalselection. Inthinkingabouttheevolutionofmemorytogetherwithallitspossibleaspectsitishelpfultoconsiderwhatwouldhappenifmemoriesfailedtofade.Forgettingclearlyaidsorientationintimesinceoldmemoriesweakenandthenewtendtostandoutprovidingcluesforinferringduration.Withoutforgettingadaptiveabilitywouldsuffer;forexamplelearnedbehaviourthatmighthavebeencorrectadecadeagomaynolongerbe.Casesarerecordedofpeoplewhobyordinarystandardsforgotsolittlethattheireverydayactivitieswerefullofconfusion.Thusforgettingseemstoservethesurvivaloftheindividualandthespecies. Anotherlineofthoughtassumesamemorystoragesystemoflimitedcapacitythatprovidesadaptiveflexibilityspecificallythroughforgetting.Inthisviewcontinualadjustmentsaremadebetweenlearningormemorystorageinputandforgettingoutput.Indeedthereisevidencethattherateatwhichindividualsforgetisdirectlyrelatedtohowmuchtheyhavelearned.Suchdataoffergrosssupportofcontemporarymodelsofmemorythatassumeaninput-outputbalance. Fromtheevolutionarypointofview________________.
Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
AreportconsistentlybroughtbackbyvisitorstotheUSishowfriendlycourteousandhelpfulmostAmericansweretothem.TobefairthisobservationisalsofrequentlymadeofCanadaandCanadiansandshouldbestbeconsideredNorthAmerican.Thereareofcourseexceptions.Small-mindedofficialsrudewaitersandill-manneredtaxidriversarehardlyunknownintheUS.Yetitisanobservationmadesofrequentlythatitdeservescomment. Foralongperiodoftimeandinmanypartsofthecountryatravelerwasawelcomebreakinanotherwisedullexistence.Dullnessandlonelinesswerecommonproblemsofthefamilieswhogenerallyliveddistantfromoneanother.Strangersandtravelerswerewelcomesourcesofdiversionandbroughtnewsoftheoutsideworld. Theharshrealitiesofthefrontieralsoshapedthistraditionofhospitality.Someonetravellingaloneifhungryinjuredorilloftenhadnowheretoturnexcepttothenearestcabinorsettlement.Itwasnotamatterofchoiceforthetravelerormerelyacharitableimpulseonthepartofthesettlers.Itreflectedtheharshnessofdailylife:ifyoudidn’’ttakeinthestrangerandtakecareofhimtherewasnooneelsewhowould.Andsomedayrememberyoumightbeinthesamesituation. Todaytherearemanycharitableorganizationswhichspecializeinhelpingthewearytraveler.YettheoldtraditionofhospitalitytostrangersisstillverystrongintheUSespeciallyinthesmallercitiesandtownsawayfromthebusytouristtrails.IwasjusttravelingthroughgottalkingwiththisAmericanandprettysoonheinvitedmehomefordinner―amazing.SuchobservationsreportedbyvisitorstotheUSarenotuncommonbutarenotalwaysunderstoodproperly.ThecasualfriendlinessofmanyAmericansshouldbeinterpretedneitherassuperficialnorasartificialbutastheresultofahistoricallydevelopedculturaltradition. AsistrueofanydevelopedsocietyinAmericaacomplexsetofculturalsignalsassumptionsandconventionsunderliesallsocialinterrelationships.Andofcoursespeakingalanguagedoesnotnecessarilymeanthatsomeoneunderstandssocialandculturalpatterns.Visitorswhofailtotranslateculturalmeaningsproperlyoftendrawwrongconclusions.ForexamplewhenanAmericanusesthewordfriendtheculturalimplicationsofthewordmaybequitedifferentfromthoseithasinthevisitor’’slanguageandculture.Ittakesmorethanabriefencounteronabustodistinguishbetweencourteousconventionandindividualinterest.YetbeingfriendlyisavirtuethatmanyAmericansvaluehighlyandexpectfrombothneighborsandstrangers. Thetraditionofhospitalitytostrangers___________.
Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
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右拇甲根部截断伤清创后闭合伤口应采用
71．Whiletherearealmostasmanydefinitionsofhistoryastherearehistoriansmodernpracticemostcloselyconformstoonethatseeshistoryastheattempttorecreateandexplainthesignificanteventsofthepast.Caughtinthewebofitsowntimeandplaceeachgenerationofhistoriansdeterminesanewwhatissignificantforitinthepast.Inthissearchtheevidencefoundisalwaysincompleteandscattereditisalsofrequentlypartialorpartisan.Theironyofthehistorian’’scraftisthatitsractitionersalwaysknowthattheireffortsarebutcontributionstoanunendingprocess. 72．Interestinhistoricalmethodshasarisenlessthroughexternalchallengetothevalidityofhistoryasanintellectualdisciplineandmorefrominternalquarrelsamonghistoriansthemselves.Whilehistoryoncerevereditsaffinitytoliteratureandphilosophytheemergingsocialsciencesseemedtoaffordgreateropportunitiesforaskingnewquestionsandprovidingrewardingapproachestoanunderstandingofthepast.Socialsciencemethodologieshadtobeadaptedtoadisciplinegovernedbytheprimacyofhistoricalsourcesratherthantheimperativesofthecontemporaryworld. 73．Duringthistransfertraditionalhistoricalmethodswereaugmentedbyadditionalmethodologiesdesignedtointerpretthenewformsofevidenceinthehistoricalstudy. Methodologyisatermthatremainsinherentlyambiguousinthehistoricalprofession.74．Thereisnoagreementwhethermethodologyreferstotheconceptspeculiartohistoricalworkingeneralortotheresearchtechniquesappropriatetothevariousbranchesofhistoricalinquiry.Historiansespeciallythosesoblindedbytheirresearchintereststhattheyhavebeenaccusedoftunnelmethodfrequentlyfallvictimtothetechnicistfallacy.Alsocommoninthenaturalsciencesthetechnicistfallacymistakenlyidentifiesthedisciplineasawholewithcertainpartsofitstechnicalimplementation.75．Itappliesequallytotraditionalhistorianswhoviewhistoryasonlytheexternalandinternalcriticismofsourcesandtosocialsciencehistorianswhoequatetheiractivitywithspecifictechniques.
71．Whiletherearealmostasmanydefinitionsofhistoryastherearehistoriansmodernpracticemostcloselyconformstoonethatseeshistoryastheattempttorecreateandexplainthesignificanteventsofthepast.Caughtinthewebofitsowntimeandplaceeachgenerationofhistoriansdeterminesanewwhatissignificantforitinthepast.Inthissearchtheevidencefoundisalwaysincompleteandscattereditisalsofrequentlypartialorpartisan.Theironyofthehistorian’’scraftisthatitsractitionersalwaysknowthattheireffortsarebutcontributionstoanunendingprocess. 72．Interestinhistoricalmethodshasarisenlessthroughexternalchallengetothevalidityofhistoryasanintellectualdisciplineandmorefrominternalquarrelsamonghistoriansthemselves.Whilehistoryoncerevereditsaffinitytoliteratureandphilosophytheemergingsocialsciencesseemedtoaffordgreateropportunitiesforaskingnewquestionsandprovidingrewardingapproachestoanunderstandingofthepast.Socialsciencemethodologieshadtobeadaptedtoadisciplinegovernedbytheprimacyofhistoricalsourcesratherthantheimperativesofthecontemporaryworld. 73．Duringthistransfertraditionalhistoricalmethodswereaugmentedbyadditionalmethodologiesdesignedtointerpretthenewformsofevidenceinthehistoricalstudy. Methodologyisatermthatremainsinherentlyambiguousinthehistoricalprofession.74．Thereisnoagreementwhethermethodologyreferstotheconceptspeculiartohistoricalworkingeneralortotheresearchtechniquesappropriatetothevariousbranchesofhistoricalinquiry.Historiansespeciallythosesoblindedbytheirresearchintereststhattheyhavebeenaccusedoftunnelmethodfrequentlyfallvictimtothetechnicistfallacy.Alsocommoninthenaturalsciencesthetechnicistfallacymistakenlyidentifiesthedisciplineasawholewithcertainpartsofitstechnicalimplementation.75．Itappliesequallytotraditionalhistorianswhoviewhistoryasonlytheexternalandinternalcriticismofsourcesandtosocialsciencehistorianswhoequatetheiractivitywithspecifictechniques.
下列哪类药物可能加重变异型心绞痛发作
Beingamanhasalwaysbeendangerous.Thereareabout105malesbornforevery100femalesbutthisratiodropstonearbalanceattheageofmaturityandamong70-year-oldtherearetwiceasmanywomenasmen.Butthegreatuniversalofmalemortalityisbeingchanged.Nowboybabiessurvivealmostaswellasgirlsdo.Thismeansthatforthefirsttimetherewillbeanexcessofboysinthosecrucialyearswhentheyaresearchingforamate.Moreimportantanotherchancefornaturalselectionhasbeenremoved.Fiftyyearsagothechanceofababyparticularlyaboybabysurvivingdependedonitsweight.Akilogramtoolightortooheavymeantalmostcertaindeath.Todayitmakesalmostnodifference.Sincemuchofthevariationisduetogenesonemoreagentofevolutionhasgone. Thereisanotherwaytocommitevolutionarysuicide:stayalivebuthavefewerchildren.Fewpeopleareasfertileasinthepast.Exceptinsomereligiouscommunitiesveryfewwomenhave15children.Nowadaysthenumberofbirthsliketheageofdeathhasbecomeaverage.Mostofushaveroughlythesamenumberofoffspring.Againdifferencesbetweenpeopleandtheopportunityfornaturalselectiontotakeadvantageofithavediminished.Indiashowswhatishappening.Thecountryofferswealthforafewinthegreatcitiesandpovertyfortheremainingtribalpeoples.Thegrandmediocrityoftoday--everyonebeingthesameinsurvivalandnumberofoffspring--meansthatnaturalselectionhaslost80%ofitspowerinupper-middle-classIndiacomparedtothetribes. Forusthismeansthatevolutionisover;thebiologicalUtopiahasarrived.Strangelyithasinvolvedlittlephysicalchange.Nootherspeciesfillssomanyplacesinnature.Butinthepast100000years--eventhepast100years--ourliveshavebeentransformedbutourbodieshavenot.Wedidnotevolvebecausemachinesandsocietydiditforus.Darwinhadaphrasetodescribethoseignorantofevolution:theylookatanorganicbeingasasavagelooksatashipasatsomethingwhollybeyondhiscomprehension.Nodoubtwewillremembera20thcenturywayoflifebeyondcomprehensionforitsugliness.ButhoweveramazedourdescendantsmaybeathowfarfromUtopiaweweretheywilllookjustlikeus. WhatdoestheexampleofIndiaillustrate
71．Whiletherearealmostasmanydefinitionsofhistoryastherearehistoriansmodernpracticemostcloselyconformstoonethatseeshistoryastheattempttorecreateandexplainthesignificanteventsofthepast.Caughtinthewebofitsowntimeandplaceeachgenerationofhistoriansdeterminesanewwhatissignificantforitinthepast.Inthissearchtheevidencefoundisalwaysincompleteandscattereditisalsofrequentlypartialorpartisan.Theironyofthehistorian’’scraftisthatitsractitionersalwaysknowthattheireffortsarebutcontributionstoanunendingprocess. 72．Interestinhistoricalmethodshasarisenlessthroughexternalchallengetothevalidityofhistoryasanintellectualdisciplineandmorefrominternalquarrelsamonghistoriansthemselves.Whilehistoryoncerevereditsaffinitytoliteratureandphilosophytheemergingsocialsciencesseemedtoaffordgreateropportunitiesforaskingnewquestionsandprovidingrewardingapproachestoanunderstandingofthepast.Socialsciencemethodologieshadtobeadaptedtoadisciplinegovernedbytheprimacyofhistoricalsourcesratherthantheimperativesofthecontemporaryworld. 73．Duringthistransfertraditionalhistoricalmethodswereaugmentedbyadditionalmethodologiesdesignedtointerpretthenewformsofevidenceinthehistoricalstudy. Methodologyisatermthatremainsinherentlyambiguousinthehistoricalprofession.74．Thereisnoagreementwhethermethodologyreferstotheconceptspeculiartohistoricalworkingeneralortotheresearchtechniquesappropriatetothevariousbranchesofhistoricalinquiry.Historiansespeciallythosesoblindedbytheirresearchintereststhattheyhavebeenaccusedoftunnelmethodfrequentlyfallvictimtothetechnicistfallacy.Alsocommoninthenaturalsciencesthetechnicistfallacymistakenlyidentifiesthedisciplineasawholewithcertainpartsofitstechnicalimplementation.75．Itappliesequallytotraditionalhistorianswhoviewhistoryasonlytheexternalandinternalcriticismofsourcesandtosocialsciencehistorianswhoequatetheiractivitywithspecifictechniques. 71．Whiletherearealmostasmanydefinitionsofhistoryastherearehistoriansmodernpracticemostcloselyconformstoonethatseeshistoryastheattempttorecreateandexplainthesignificanteventsofthepast.Caughtinthewebofitsowntimeandplaceeachgenerationofhistoriansdeterminesanewwhatissignificantforitinthepast.Inthissearchtheevidencefoundisalwaysincompleteandscattereditisalsofrequentlypartialorpartisan.Theironyofthehistorian’’scraftisthatitsractitionersalwaysknowthattheireffortsarebutcontributionstoanunendingprocess. 72．Interestinhistoricalmethodshasarisenlessthroughexternalchallengetothevalidityofhistoryasanintellectualdisciplineandmorefrominternalquarrelsamonghistoriansthemselves.Whilehistoryoncerevereditsaffinitytoliteratureandphilosophytheemergingsocialsciencesseemedtoaffordgreateropportunitiesforaskingnewquestionsandprovidingrewardingapproachestoanunderstandingofthepast.Socialsciencemethodologieshadtobeadaptedtoadisciplinegovernedbytheprimacyofhistoricalsourcesratherthantheimperativesofthecontemporaryworld. 73．Duringthistransfertraditionalhistoricalmethodswereaugmentedbyadditionalmethodologiesdesignedtointerpretthenewformsofevidenceinthehistoricalstudy. Methodologyisatermthatremainsinherentlyambiguousinthehistoricalprofession.74．Thereisnoagreementwhethermethodologyreferstotheconceptspeculiartohistoricalworkingeneralortotheresearchtechniquesappropriatetothevariousbranchesofhistoricalinquiry.Historiansespeciallythosesoblindedbytheirresearchintereststhattheyhavebeenaccusedoftunnelmethodfrequentlyfallvictimtothetechnicistfallacy.Alsocommoninthenaturalsciencesthetechnicistfallacymistakenlyidentifiesthedisciplineasawholewithcertainpartsofitstechnicalimplementation.75．Itappliesequallytotraditionalhistorianswhoviewhistoryasonlytheexternalandinternalcriticismofsourcesandtosocialsciencehistorianswhoequatetheiractivitywithspecifictechniques.
Agreenhouseeffectwillraisetheearth’’stemperatureenoughbytheyear2100tocausedramaticclimatechangesincreasesealevelsanddisruptfoodproductionUnitedStatesscientistssaidthisweek. Theearth’’satmosphereisheatingataratethatcouldmeantemperaturerisesoftwodegreescentigradebythemiddleofthe21stcenturyandfivedegreescentigradebytheyear2100accordingtoareportissuedbytheUSgovernment’’sEnvironmentalProtectionAgencyEPA. SubstantialincreasesinglobalwarmingmayoccursoonerthanmostofuswouldliketobelievetheEPAsaid. Theagencysaidthefirsteffectsmightbefeltasearlyas1990becausetemperatureswouldberisingmorethanseventimesfastereachdecadebetweennowandtheyear2100thantheyhadbeenforthepast100years. TemperatureincreasesarelikelytobeaccompaniedbydramaticchangesinprecipitationandstormpatternsandariseinglobalaveragesealeveltheEPAreportsaid. Asaresulttheagencysaidagriculturalconditionswillbesignificantlyalteredenvironmentalandeconomicsystemspotentiallydisrupted. TheEPAreportsaidtheburningoffossilfuelswasdirectlyresponsibleformostoftheatmospherebuild-upofcarbondioxidebutthecurrentconcentrationissogreatthatevenaworldwidebanontheuseofsuchfuelswoulddelaythewarmingeffectforonlyafewyears. Awarmerclimatewillraisesealevelsbyheatingandexpandingtheworld’’soceansandcausingglacierstomelttheEPAsaid. Theagencyestimatedthatsealevelscouldriseanythingbetween48to380cminthenext120years. Anincreaseofeven48cmcouldfloodorcausestormdamagetomanyofthemajorportsoftheworlddisrupttransportationnetworksalterunderwaterecologysystemsandcausemajorshiftsinlanddevelopmentpatterns. Onestudycitedinthereportsuggestedthatiftheaverageglobaltemperatureroseby2.5degreescentigraderegionalclimaticconditionsmightbesimilartothoseduringthelastinterglacialperiod120000yearsago. Duringthisperiodoceanswerefivetosevenmetreshigherthantoday’’sfloodingtheshoresofEuropeandwesternSiberiaandmakingScandinaviaanisland. Theagencysaidthatwhilethewarmingtrendcouldhavesomebeneficialeffectssuchasreducingheatingcostsandimprovingclimateandgrowingseasonsinsomepartsoftheworldtherewouldbedifficultyinredirectingnationaleconomiestoadapttothenewclimatepatterns. TheEPAsaiditseemedunlikelythatthenationsoftheworldwouldreachaconsensusonsteptoreducecarbondioxideemissions.Insteaditurgedmoreresearchonthegreenhouseeffectandstressedtheneedforbetterplanningtocopewiththechangesthewarmingtrendisexpectedtoproduce. WhichofthepointsbelowisNOTgiveninthenewsreport
Thatexperiencesinfluencesubsequentbehaviourisevidenceofanobviousbutneverthelessremarkableactivitycalledremembering.Learningcouldnotoccurwithoutthefunctionpopularlynamedmemory.Constantpracticehassuchaneffectonmemoryastoleadtoskilfulperformanceonthepianotorecitationofapoemandeventoreadingandunderstandingthesewords.So-calledintelligentbehaviourdemandsmemoryrememberingbeingaprimaryrequirementforreasoning.Theabilitytosolveanyproblemoreventorecognizethataproblemexistsdependsonmemory.Typicallythedecisiontocrossastreetisbasedonrememberingmanyearlierexperiences. Practiceorreviewtendstobuildandmaintainmemoryforataskorforanylearnedmaterial.Overaperiodofnopracticewhathasbeenlearnedtendstobeforgotten;andtheadaptiveconsequencesmaynotseemobvious.Yetdramaticinstancesofsuddenforgettingcanbeseentobeadaptive.Inthissensetheabilitytoforgetcanbeinterpretedtohavesurvivedthroughaprocessofnaturalselectioninanimals.Indeedwhenone’’smemoryofanemotionallypainfulexperienceleadstoseriousanxietyforgettingmayproducerelief.Neverthelessanevolutionaryinterpretationmightmakeitdifficulttounderstandhowthecommonlygradualprocessofforgettingsurvivednaturalselection. Inthinkingabouttheevolutionofmemorytogetherwithallitspossibleaspectsitishelpfultoconsiderwhatwouldhappenifmemoriesfailedtofade.Forgettingclearlyaidsorientationintimesinceoldmemoriesweakenandthenewtendtostandoutprovidingcluesforinferringduration.Withoutforgettingadaptiveabilitywouldsuffer;forexamplelearnedbehaviourthatmighthavebeencorrectadecadeagomaynolongerbe.Casesarerecordedofpeoplewhobyordinarystandardsforgotsolittlethattheireverydayactivitieswerefullofconfusion.Thusforgettingseemstoservethesurvivaloftheindividualandthespecies. Anotherlineofthoughtassumesamemorystoragesystemoflimitedcapacitythatprovidesadaptiveflexibilityspecificallythroughforgetting.Inthisviewcontinualadjustmentsaremadebetweenlearningormemorystorageinputandforgettingoutput.Indeedthereisevidencethattherateatwhichindividualsforgetisdirectlyrelatedtohowmuchtheyhavelearned.Suchdataoffergrosssupportofcontemporarymodelsofmemorythatassumeaninput-outputbalance. Fromthelastparagraphweknowthat________________.
AreportconsistentlybroughtbackbyvisitorstotheUSishowfriendlycourteousandhelpfulmostAmericansweretothem.TobefairthisobservationisalsofrequentlymadeofCanadaandCanadiansandshouldbestbeconsideredNorthAmerican.Thereareofcourseexceptions.Small-mindedofficialsrudewaitersandill-manneredtaxidriversarehardlyunknownintheUS.Yetitisanobservationmadesofrequentlythatitdeservescomment. Foralongperiodoftimeandinmanypartsofthecountryatravelerwasawelcomebreakinanotherwisedullexistence.Dullnessandlonelinesswerecommonproblemsofthefamilieswhogenerallyliveddistantfromoneanother.Strangersandtravelerswerewelcomesourcesofdiversionandbroughtnewsoftheoutsideworld. Theharshrealitiesofthefrontieralsoshapedthistraditionofhospitality.Someonetravellingaloneifhungryinjuredorilloftenhadnowheretoturnexcepttothenearestcabinorsettlement.Itwasnotamatterofchoiceforthetravelerormerelyacharitableimpulseonthepartofthesettlers.Itreflectedtheharshnessofdailylife:ifyoudidn’’ttakeinthestrangerandtakecareofhimtherewasnooneelsewhowould.Andsomedayrememberyoumightbeinthesamesituation. Todaytherearemanycharitableorganizationswhichspecializeinhelpingthewearytraveler.YettheoldtraditionofhospitalitytostrangersisstillverystrongintheUSespeciallyinthesmallercitiesandtownsawayfromthebusytouristtrails.IwasjusttravelingthroughgottalkingwiththisAmericanandprettysoonheinvitedmehomefordinner―amazing.SuchobservationsreportedbyvisitorstotheUSarenotuncommonbutarenotalwaysunderstoodproperly.ThecasualfriendlinessofmanyAmericansshouldbeinterpretedneitherassuperficialnorasartificialbutastheresultofahistoricallydevelopedculturaltradition. AsistrueofanydevelopedsocietyinAmericaacomplexsetofculturalsignalsassumptionsandconventionsunderliesallsocialinterrelationships.Andofcoursespeakingalanguagedoesnotnecessarilymeanthatsomeoneunderstandssocialandculturalpatterns.Visitorswhofailtotranslateculturalmeaningsproperlyoftendrawwrongconclusions.ForexamplewhenanAmericanusesthewordfriendtheculturalimplicationsofthewordmaybequitedifferentfromthoseithasinthevisitor’’slanguageandculture.Ittakesmorethanabriefencounteronabustodistinguishbetweencourteousconventionandindividualinterest.YetbeingfriendlyisavirtuethatmanyAmericansvaluehighlyandexpectfrombothneighborsandstrangers. Itcouldbeinferredfromthelastparagraphthat___________.
Agreenhouseeffectwillraisetheearth’’stemperatureenoughbytheyear2100tocausedramaticclimatechangesincreasesealevelsanddisruptfoodproductionUnitedStatesscientistssaidthisweek. Theearth’’satmosphereisheatingataratethatcouldmeantemperaturerisesoftwodegreescentigradebythemiddleofthe21stcenturyandfivedegreescentigradebytheyear2100accordingtoareportissuedbytheUSgovernment’’sEnvironmentalProtectionAgencyEPA. SubstantialincreasesinglobalwarmingmayoccursoonerthanmostofuswouldliketobelievetheEPAsaid. Theagencysaidthefirsteffectsmightbefeltasearlyas1990becausetemperatureswouldberisingmorethanseventimesfastereachdecadebetweennowandtheyear2100thantheyhadbeenforthepast100years. TemperatureincreasesarelikelytobeaccompaniedbydramaticchangesinprecipitationandstormpatternsandariseinglobalaveragesealeveltheEPAreportsaid. Asaresulttheagencysaidagriculturalconditionswillbesignificantlyalteredenvironmentalandeconomicsystemspotentiallydisrupted. TheEPAreportsaidtheburningoffossilfuelswasdirectlyresponsibleformostoftheatmospherebuild-upofcarbondioxidebutthecurrentconcentrationissogreatthatevenaworldwidebanontheuseofsuchfuelswoulddelaythewarmingeffectforonlyafewyears. Awarmerclimatewillraisesealevelsbyheatingandexpandingtheworld’’soceansandcausingglacierstomelttheEPAsaid. Theagencyestimatedthatsealevelscouldriseanythingbetween48to380cminthenext120years. Anincreaseofeven48cmcouldfloodorcausestormdamagetomanyofthemajorportsoftheworlddisrupttransportationnetworksalterunderwaterecologysystemsandcausemajorshiftsinlanddevelopmentpatterns. Onestudycitedinthereportsuggestedthatiftheaverageglobaltemperatureroseby2.5degreescentigraderegionalclimaticconditionsmightbesimilartothoseduringthelastinterglacialperiod120000yearsago. Duringthisperiodoceanswerefivetosevenmetreshigherthantoday’’sfloodingtheshoresofEuropeandwesternSiberiaandmakingScandinaviaanisland. Theagencysaidthatwhilethewarmingtrendcouldhavesomebeneficialeffectssuchasreducingheatingcostsandimprovingclimateandgrowingseasonsinsomepartsoftheworldtherewouldbedifficultyinredirectingnationaleconomiestoadapttothenewclimatepatterns. TheEPAsaiditseemedunlikelythatthenationsoftheworldwouldreachaconsensusonsteptoreducecarbondioxideemissions.Insteaditurgedmoreresearchonthegreenhouseeffectandstressedtheneedforbetterplanningtocopewiththechangesthewarmingtrendisexpectedtoproduce. Asaresultoftherisingoftheearth’’stemperatureby2100
女66岁慢性支气管炎并阻塞性肺气肿病史20余年3天前咳嗽咳痰加重血气分析结果如下pH7．23氧分压55mmHg二氧化碳分压74mm-Hg碳酸氢根16mmol/L碱剩余-6考虑对酸碱平衡的诊断下列哪项正确
下列对真核原核生物DNA-poi的比较中正确的是
Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
Beingamanhasalwaysbeendangerous.Thereareabout105malesbornforevery100femalesbutthisratiodropstonearbalanceattheageofmaturityandamong70-year-oldtherearetwiceasmanywomenasmen.Butthegreatuniversalofmalemortalityisbeingchanged.Nowboybabiessurvivealmostaswellasgirlsdo.Thismeansthatforthefirsttimetherewillbeanexcessofboysinthosecrucialyearswhentheyaresearchingforamate.Moreimportantanotherchancefornaturalselectionhasbeenremoved.Fiftyyearsagothechanceofababyparticularlyaboybabysurvivingdependedonitsweight.Akilogramtoolightortooheavymeantalmostcertaindeath.Todayitmakesalmostnodifference.Sincemuchofthevariationisduetogenesonemoreagentofevolutionhasgone. Thereisanotherwaytocommitevolutionarysuicide:stayalivebuthavefewerchildren.Fewpeopleareasfertileasinthepast.Exceptinsomereligiouscommunitiesveryfewwomenhave15children.Nowadaysthenumberofbirthsliketheageofdeathhasbecomeaverage.Mostofushaveroughlythesamenumberofoffspring.Againdifferencesbetweenpeopleandtheopportunityfornaturalselectiontotakeadvantageofithavediminished.Indiashowswhatishappening.Thecountryofferswealthforafewinthegreatcitiesandpovertyfortheremainingtribalpeoples.Thegrandmediocrityoftoday--everyonebeingthesameinsurvivalandnumberofoffspring--meansthatnaturalselectionhaslost80%ofitspowerinupper-middle-classIndiacomparedtothetribes. Forusthismeansthatevolutionisover;thebiologicalUtopiahasarrived.Strangelyithasinvolvedlittlephysicalchange.Nootherspeciesfillssomanyplacesinnature.Butinthepast100000years--eventhepast100years--ourliveshavebeentransformedbutourbodieshavenot.Wedidnotevolvebecausemachinesandsocietydiditforus.Darwinhadaphrasetodescribethoseignorantofevolution:theylookatanorganicbeingasasavagelooksatashipasatsomethingwhollybeyondhiscomprehension.Nodoubtwewillremembera20thcenturywayoflifebeyondcomprehensionforitsugliness.ButhoweveramazedourdescendantsmaybeathowfarfromUtopiaweweretheywilllookjustlikeus. Whichofthefollowingwouldbethebesttitleforthepassage
Agreenhouseeffectwillraisetheearth’’stemperatureenoughbytheyear2100tocausedramaticclimatechangesincreasesealevelsanddisruptfoodproductionUnitedStatesscientistssaidthisweek. Theearth’’satmosphereisheatingataratethatcouldmeantemperaturerisesoftwodegreescentigradebythemiddleofthe21stcenturyandfivedegreescentigradebytheyear2100accordingtoareportissuedbytheUSgovernment’’sEnvironmentalProtectionAgencyEPA. SubstantialincreasesinglobalwarmingmayoccursoonerthanmostofuswouldliketobelievetheEPAsaid. Theagencysaidthefirsteffectsmightbefeltasearlyas1990becausetemperatureswouldberisingmorethanseventimesfastereachdecadebetweennowandtheyear2100thantheyhadbeenforthepast100years. TemperatureincreasesarelikelytobeaccompaniedbydramaticchangesinprecipitationandstormpatternsandariseinglobalaveragesealeveltheEPAreportsaid. Asaresulttheagencysaidagriculturalconditionswillbesignificantlyalteredenvironmentalandeconomicsystemspotentiallydisrupted. TheEPAreportsaidtheburningoffossilfuelswasdirectlyresponsibleformostoftheatmospherebuild-upofcarbondioxidebutthecurrentconcentrationissogreatthatevenaworldwidebanontheuseofsuchfuelswoulddelaythewarmingeffectforonlyafewyears. Awarmerclimatewillraisesealevelsbyheatingandexpandingtheworld’’soceansandcausingglacierstomelttheEPAsaid. Theagencyestimatedthatsealevelscouldriseanythingbetween48to380cminthenext120years. Anincreaseofeven48cmcouldfloodorcausestormdamagetomanyofthemajorportsoftheworlddisrupttransportationnetworksalterunderwaterecologysystemsandcausemajorshiftsinlanddevelopmentpatterns. Onestudycitedinthereportsuggestedthatiftheaverageglobaltemperatureroseby2.5degreescentigraderegionalclimaticconditionsmightbesimilartothoseduringthelastinterglacialperiod120000yearsago. Duringthisperiodoceanswerefivetosevenmetreshigherthantoday’’sfloodingtheshoresofEuropeandwesternSiberiaandmakingScandinaviaanisland. Theagencysaidthatwhilethewarmingtrendcouldhavesomebeneficialeffectssuchasreducingheatingcostsandimprovingclimateandgrowingseasonsinsomepartsoftheworldtherewouldbedifficultyinredirectingnationaleconomiestoadapttothenewclimatepatterns. TheEPAsaiditseemedunlikelythatthenationsoftheworldwouldreachaconsensusonsteptoreducecarbondioxideemissions.Insteaditurgedmoreresearchonthegreenhouseeffectandstressedtheneedforbetterplanningtocopewiththechangesthewarmingtrendisexpectedtoproduce. TheEPAwarnsusthatunlesstheriseintheearth’’stemperaturewererestrained
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