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肝硬化患者出现肝掌、蜘蛛痣的机制是
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肝硬化患者出现肝掌蜘蛛痣的机制是
雄激素减少
肾上腺皮质功能减退
雌激素过多
血管紧张素分泌过多
门静脉__所致
肝硬化病人出现肝掌蜘蛛痣与______________________增多有关
章某男55岁确诊乙肝肝硬化8年身体评估胸前蜘蛛痣+肝掌+病人出现蜘蛛痣肝掌的机制是
体内雌激素增多
体内醛固酮增多
侧支循环建立
门静脉__
肝脏合成清蛋白减少
李某男55岁确诊乙肝肝硬化8年身体评估胸前蜘蛛痣+肝掌+病人出现蜘蛛痣肝掌的机制是
体内雌激素增多
体内醛固酮增多
侧支循环建立
门静脉__
肝脏合成清蛋白减少
肝硬化时不出现
肝掌
蜘蛛痣
Murphy征阳性
腹水
脾肿大
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男性70岁慢性咳嗽咳痰20余年每年持续3～4个月近2～3年出现活动后气短有时双下肢水肿今日晨起突感左上胸针刺样疼痛与呼吸有关继之出现呼吸困难大汗不能平卧来院就诊为明确诊断需先行哪项检查
Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
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
男性70岁慢性咳嗽咳痰20余年每年持续3～4个月近2～3年出现活动后气短有时双下肢水肿今日晨起突感左上胸针刺样疼痛与呼吸有关继之出现呼吸困难大汗不能平卧来院就诊该患者目前的诊断应是
71．Whiletherearealmostasmanydefinitionsofhistoryastherearehistoriansmodernpracticemostcloselyconformstoonethatseeshistoryastheattempttorecreateandexplainthesignificanteventsofthepast.Caughtinthewebofitsowntimeandplaceeachgenerationofhistoriansdeterminesanewwhatissignificantforitinthepast.Inthissearchtheevidencefoundisalwaysincompleteandscattereditisalsofrequentlypartialorpartisan.Theironyofthehistorian’’scraftisthatitsractitionersalwaysknowthattheireffortsarebutcontributionstoanunendingprocess. 72．Interestinhistoricalmethodshasarisenlessthroughexternalchallengetothevalidityofhistoryasanintellectualdisciplineandmorefrominternalquarrelsamonghistoriansthemselves.Whilehistoryoncerevereditsaffinitytoliteratureandphilosophytheemergingsocialsciencesseemedtoaffordgreateropportunitiesforaskingnewquestionsandprovidingrewardingapproachestoanunderstandingofthepast.Socialsciencemethodologieshadtobeadaptedtoadisciplinegovernedbytheprimacyofhistoricalsourcesratherthantheimperativesofthecontemporaryworld. 73．Duringthistransfertraditionalhistoricalmethodswereaugmentedbyadditionalmethodologiesdesignedtointerpretthenewformsofevidenceinthehistoricalstudy. Methodologyisatermthatremainsinherentlyambiguousinthehistoricalprofession.74．Thereisnoagreementwhethermethodologyreferstotheconceptspeculiartohistoricalworkingeneralortotheresearchtechniquesappropriatetothevariousbranchesofhistoricalinquiry.Historiansespeciallythosesoblindedbytheirresearchintereststhattheyhavebeenaccusedoftunnelmethodfrequentlyfallvictimtothetechnicistfallacy.Alsocommoninthenaturalsciencesthetechnicistfallacymistakenlyidentifiesthedisciplineasawholewithcertainpartsofitstechnicalimplementation.75．Itappliesequallytotraditionalhistorianswhoviewhistoryasonlytheexternalandinternalcriticismofsourcesandtosocialsciencehistorianswhoequatetheiractivitywithspecifictechniques.
Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
71．Whiletherearealmostasmanydefinitionsofhistoryastherearehistoriansmodernpracticemostcloselyconformstoonethatseeshistoryastheattempttorecreateandexplainthesignificanteventsofthepast.Caughtinthewebofitsowntimeandplaceeachgenerationofhistoriansdeterminesanewwhatissignificantforitinthepast.Inthissearchtheevidencefoundisalwaysincompleteandscattereditisalsofrequentlypartialorpartisan.Theironyofthehistorian’’scraftisthatitsractitionersalwaysknowthattheireffortsarebutcontributionstoanunendingprocess. 72．Interestinhistoricalmethodshasarisenlessthroughexternalchallengetothevalidityofhistoryasanintellectualdisciplineandmorefrominternalquarrelsamonghistoriansthemselves.Whilehistoryoncerevereditsaffinitytoliteratureandphilosophytheemergingsocialsciencesseemedtoaffordgreateropportunitiesforaskingnewquestionsandprovidingrewardingapproachestoanunderstandingofthepast.Socialsciencemethodologieshadtobeadaptedtoadisciplinegovernedbytheprimacyofhistoricalsourcesratherthantheimperativesofthecontemporaryworld. 73．Duringthistransfertraditionalhistoricalmethodswereaugmentedbyadditionalmethodologiesdesignedtointerpretthenewformsofevidenceinthehistoricalstudy. Methodologyisatermthatremainsinherentlyambiguousinthehistoricalprofession.74．Thereisnoagreementwhethermethodologyreferstotheconceptspeculiartohistoricalworkingeneralortotheresearchtechniquesappropriatetothevariousbranchesofhistoricalinquiry.Historiansespeciallythosesoblindedbytheirresearchintereststhattheyhavebeenaccusedoftunnelmethodfrequentlyfallvictimtothetechnicistfallacy.Alsocommoninthenaturalsciencesthetechnicistfallacymistakenlyidentifiesthedisciplineasawholewithcertainpartsofitstechnicalimplementation.75．Itappliesequallytotraditionalhistorianswhoviewhistoryasonlytheexternalandinternalcriticismofsourcesandtosocialsciencehistorianswhoequatetheiractivitywithspecifictechniques.
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
男性70岁慢性咳嗽咳痰20余年每年持续3～4个月近2～3年出现活动后气短有时双下肢水肿今日晨起突感左上胸针刺样疼痛与呼吸有关继之出现呼吸困难大汗不能平卧来院就诊该患者诊断可能为
男性70岁慢性咳嗽咳痰20余年每年持续3～4个月近2～3年出现活动后气短有时双下肢水肿今日晨起突感左上胸针刺样疼痛与呼吸有关继之出现呼吸困难大汗不能平卧来院就诊若需明确诊断则下一步需作的是
Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
男性70岁慢性咳嗽咳痰20余年每年持续3～4个月近2～3年出现活动后气短有时双下肢水肿今日晨起突感左上胸针刺样疼痛与呼吸有关继之出现呼吸困难大汗不能平卧来院就诊下列哪项生化异常不应出现
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
男性70岁慢性咳嗽咳痰20余年每年持续3～4个月近2～3年出现活动后气短有时双下肢水肿今日晨起突感左上胸针刺样疼痛与呼吸有关继之出现呼吸困难大汗不能平卧来院就诊在该患者的后续治疗中哪项治疗措施是最重要的
Ineconomicsthevalueaddedbyamanufacturingfirmtoitsproductsisthedifferencebetweenthepriceofafinishedproductandthecostofrawmaterialspartssuppliesfuelandelectricalenergyusedintheproductionofthatproduct.When1inthismannerthevalueaddedbymanufactureisausefulindexofthemanufacturingfirm’’s2tothenationaleconomy.Itisamore3indexofcoursethan4salesafigurethatismisleadingbecauseittells5aboutproductioncostsand6themanufacturingfirmis7ataprofitorataloss. Ineducationthereisnowaspirited8astowhethersuchaconceptwouldnotbemost9forcollegegraduatesisevidently10inthesalariestheycancommand11receiptofacollegedegree.Engineersaccountantsandcomputerspecialistscommand12salariesupongraduationandbyimplicationtheremustbean13valueaddedtotheirmarketability14theeducationandtrainingthey15incollege.Whenlookedatmoreclosely16themissingfactoris17thedifferencebetweenlearnercapabilities18totheireducationalexperiencesandgraduatecapabilitiesafter19acollegedegree.Inbriefhowmuchdoesthestudent20fromtheinstructionheorshehasreceived
男性70岁慢性咳嗽咳痰20余年每年持续3～4个月近2～3年出现活动后气短有时双下肢水肿今日晨起突感左上胸针刺样疼痛与呼吸有关继之出现呼吸困难大汗不能平卧来院就诊该患者最可能的诊断是
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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