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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________________.
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand16thcenturies.Yetmuchhadhappened________Aswasdiscussedbeforeitwasnot______the19thcenturythatthenewspaperbecamethedominantpre-electronic______followinginthewakeofthepamphletandthebookandinthe________oftheperiodical.Itwasduringthesametimethatthecommunicationsrevolution________upbeginningwithtransporttherailwayandleading________throughthetelegraphthetelephoneradioandmotionpictures________the20th-centuryworldofthemotorcarandtheairplane.Noteveryoneseesthatprocessin________Itisimportanttodoso. Itisgenerallyrecognized________thattheintroductionofthecomputerintheearly20thcentury________bytheinventionoftheintegratedcircuitduringthe1960sradicallychangedtheprocess________itsimpactonthemediawasnotimmediately________Astimewentbycomputersbecamesmallerandmorepowerfulandtheybecamepersonaltooaswellas________withdisplaybecomingsharperandstorage________increasing.Theywerethoughtoflikepeople________generationswiththedistancebetweengenerationsmuch________. Itwaswithinthecomputeragethattheterminformationsocietybegantobewidelyusedtodescribethe________withinwhichwenowlive.Thecommunicationsrevolutionhas________bothworkandleisureandhowwethinkandfeelbothaboutplaceandtimebuttherehavebeen________viewsaboutitseconomicpoliticalsocialandculturalimplications.Benefitshavebeenweighed________harmfuloutcomes.Andgeneralizationshaveproveddifficult.
__首次阐述中国__和各民主党派长期共存互相监督方针的文献是
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand16thcenturies.Yetmuchhadhappened________Aswasdiscussedbeforeitwasnot______the19thcenturythatthenewspaperbecamethedominantpre-electronic______followinginthewakeofthepamphletandthebookandinthe________oftheperiodical.Itwasduringthesametimethatthecommunicationsrevolution________upbeginningwithtransporttherailwayandleading________throughthetelegraphthetelephoneradioandmotionpictures________the20th-centuryworldofthemotorcarandtheairplane.Noteveryoneseesthatprocessin________Itisimportanttodoso. Itisgenerallyrecognized________thattheintroductionofthecomputerintheearly20thcentury________bytheinventionoftheintegratedcircuitduringthe1960sradicallychangedtheprocess________itsimpactonthemediawasnotimmediately________Astimewentbycomputersbecamesmallerandmorepowerfulandtheybecamepersonaltooaswellas________withdisplaybecomingsharperandstorage________increasing.Theywerethoughtoflikepeople________generationswiththedistancebetweengenerationsmuch________. Itwaswithinthecomputeragethattheterminformationsocietybegantobewidelyusedtodescribethe________withinwhichwenowlive.Thecommunicationsrevolutionhas________bothworkandleisureandhowwethinkandfeelbothaboutplaceandtimebuttherehavebeen________viewsaboutitseconomicpoliticalsocialandculturalimplications.Benefitshavebeenweighed________harmfuloutcomes.Andgeneralizationshaveproveddifficult.
WhenIdecidedtoquitmyfulltimeemploymentitneveroccurredtomethatImightbecomeapartofanewinternationaltrend.AlateralmovethathurtmyprideandblockedmyprofessionalprogresspromptedmetoabandonmyrelativelyhighprofilecareeralthoughinthemannerofadisgracedgovernmentministerIcoveredmyexitbyclaimingIwantedtospendmoretimewithmyfamily. Curiouslysometwo-and-a-halfyearsandtwonovelslatermyexperimentinwhattheAmericanstermdownshiftinghasturnedmytiredexcuseintoanabsolutereality.IhavebeentransformedfromapassionateadvocateofthephilosophyofhavingitallpreachedbyLindaKelseyforthepastsevenyearsinthepagesofShemagazineintoawomanwhoishappytosettleforabitofeverything. IhavediscoveredasperhapsKelseywillafterhermuch-publicizedresignationfromtheeditorshipofsheafterabuild-upofstressthatabandoningthedoctrineofjugglingyourlifeandmakingthealternativemoveintodownshiftingbringswithitfargreaterrewardsthanfinancialsuccessandsocialstatus.NothingcouldpersuademetoreturntothekindoflifeKelseyusedtoadvocateandIonceenjoyed:12-hourworkingdayspressureddeadlinesthefearfulstrainofofficepoliticsandthelimitationsofbeingaparentonqualitytime. InAmericathemoveawayfromjugglingtoasimplerlessmaterialisticlifestyleisawell-establishedtrend.Downshifting--alsoknowninAmericaasvoluntarysimplicity--hasironicallyevenbredanewareaofwhatmightbetermedanti-consumerism.Thereareanumberofbestsellingdownshiftingself-helpbooksforpeoplewhowanttosimplifytheirlives;therearenewsletterssuchasTheTightwadGazettethatgivehundredsofthousandsofAmericansusefultipsonanythingfromrecyclingtheircling-filmtomakingtheirownsoap;thereareevensupportgroupsforthosewhowanttoachievethemid-’’90sequivalentofdroppingout. WhileinAmericathetrendstartedasareactiontotheeconomicdecline--afterthemassredundanciescausedbydownsizinginthelate’’80s--andisstilllinkedtothepoliticsofthriftinBritainatleastamongthemiddle-classdownshiftersofmyacquaintancewehavedifferentreasonsforseekingtosimplifyourlives. Forthewomenofmygenerationwhowereurgedtokeepjugglingthroughthe’’80sdownshiftinginthmid-’’90sisnotsomuchasearchforthemythicalgoodlife--growingyourownorganicvegetablesandriskingturningintoone--asapersonalrecognitionofyourlimitations. Whichofthefollowingistrueaccordingtoparagraph1
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand16thcenturies.Yetmuchhadhappened________Aswasdiscussedbeforeitwasnot______the19thcenturythatthenewspaperbecamethedominantpre-electronic______followinginthewakeofthepamphletandthebookandinthe________oftheperiodical.Itwasduringthesametimethatthecommunicationsrevolution________upbeginningwithtransporttherailwayandleading________throughthetelegraphthetelephoneradioandmotionpictures________the20th-centuryworldofthemotorcarandtheairplane.Noteveryoneseesthatprocessin________Itisimportanttodoso. Itisgenerallyrecognized________thattheintroductionofthecomputerintheearly20thcentury________bytheinventionoftheintegratedcircuitduringthe1960sradicallychangedtheprocess________itsimpactonthemediawasnotimmediately________Astimewentbycomputersbecamesmallerandmorepowerfulandtheybecamepersonaltooaswellas________withdisplaybecomingsharperandstorage________increasing.Theywerethoughtoflikepeople________generationswiththedistancebetweengenerationsmuch________. Itwaswithinthecomputeragethattheterminformationsocietybegantobewidelyusedtodescribethe________withinwhichwenowlive.Thecommunicationsrevolutionhas________bothworkandleisureandhowwethinkandfeelbothaboutplaceandtimebuttherehavebeen________viewsaboutitseconomicpoliticalsocialandculturalimplications.Benefitshavebeenweighed________harmfuloutcomes.Andgeneralizationshaveproveddifficult.
百部科主要特征是
浆果和核果
请以检索表形式区别Zinginber属Amomum属Alpinia属Curcuma属
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand16thcenturies.Yetmuchhadhappened________Aswasdiscussedbeforeitwasnot______the19thcenturythatthenewspaperbecamethedominantpre-electronic______followinginthewakeofthepamphletandthebookandinthe________oftheperiodical.Itwasduringthesametimethatthecommunicationsrevolution________upbeginningwithtransporttherailwayandleading________throughthetelegraphthetelephoneradioandmotionpictures________the20th-centuryworldofthemotorcarandtheairplane.Noteveryoneseesthatprocessin________Itisimportanttodoso. Itisgenerallyrecognized________thattheintroductionofthecomputerintheearly20thcentury________bytheinventionoftheintegratedcircuitduringthe1960sradicallychangedtheprocess________itsimpactonthemediawasnotimmediately________Astimewentbycomputersbecamesmallerandmorepowerfulandtheybecamepersonaltooaswellas________withdisplaybecomingsharperandstorage________increasing.Theywerethoughtoflikepeople________generationswiththedistancebetweengenerationsmuch________. Itwaswithinthecomputeragethattheterminformationsocietybegantobewidelyusedtodescribethe________withinwhichwenowlive.Thecommunicationsrevolutionhas________bothworkandleisureandhowwethinkandfeelbothaboutplaceandtimebuttherehavebeen________viewsaboutitseconomicpoliticalsocialandculturalimplications.Benefitshavebeenweighed________harmfuloutcomes.Andgeneralizationshaveproveddifficult.
Ahistoryoflongandeffortlesssuccesscanbeadreadfulhandicapbutifproperlyhandleditmaybecomeadrivingforce.WhentheUnitedStatesenteredjustsuchaglowingperiodaftertheendoftheSecondWorldWarithadamarketeighttimeslargerthananycompetitorgivingitsindustriesunparalleledeconomiesofscale.Itsscientistsweretheworld’’sbestitsworkerswerethemostskilled.AmericaandAmericanswereprosperousbeyondthedreamsoftheEuropeansandAsianswhoseeconomiesthewarhaddestroyed. Itwasinevitablethatthisprimacyshouldhavenarrowedasothercountriesgrewricher.Justasinevitablytheretreatfrompredominanceprovedpainful.Bythemid-1980sAmericanshadfoundthemselvesatalossovertheirfadingindustrialcompetitiveness.SomehugeAmericanindustriessuchasconsumerelectronicshadshrunkorvanishedinthefaceofforeigncompetition.By1987therewasonlyoneAmericantelevisionmakerleftZenith.Nowthereisnone:ZenithwasboughtbySouthKorea’’sLGElectronicsinJuly.Foreign-madecarsandtextilesweresweepingintothedomesticmarket.America’’smachine-toolindustrywasontheropes.ForawhileitlookedasthoughthemakingofsemiconductorswhichAmericahadinventedandwhichsatattheheartofthenewcomputeragewasgoingtobethenextcasualty. Allofthiscausedacrisisofconfidence.Americansstoppedtakingprosperityforgranted.Theybegantobelievethattheirwayofdoingbusinesswasfailingandthattheirincomeswouldthereforeshortlybegintofallaswell.Themid-1980sbroughtoneinquiryafteranotherintothecausesofAmerica’’sindustrialdecline.Theirsometimessensationalfindingswerefilledwithwarningsaboutthegrowingcompetitionfromoverseas. Howthingshavechanged!In1995theUnitedStatescanlookbackonfiveyearsofsolidgrowthwhileJapanhasbeenstruggling.FewAmericansattributethissolelytosuchobviouscausesasadevalueddollarortheturningofthebusinesscycle.Self-doubthasyieldedtoblindpride.Americanindustryhaschangeditsstructurehasgoneonadiethaslearnttobemorequick-wittedaccordingtoRichardCavanaghexecutivedeanofHarvard’’sKennedySchoolofGovernment.ItmakesmeproudtobeanAmericanjusttoseehowourbusinessesareimprovingtheirproductivitysaysStephenMooreoftheCatoInstituteathink-tankinWashingtonD.C.AndWilliamSahlmanoftheHarvardBusinessSchoolbelievesthatpeoplewilllookbackonthisperiodasagoldenageofbusinessmanagementintheUnitedStates. TheU.S.achieveditspredominanceafterWorldWarⅡbecause__________.
Fewcreationsofbigtechnologycapturetheimaginationlikegiantdams.Perhapsitishumankind’’slongsufferingatthemercyoffloodanddroughtthatmakestheideaofforcingthewaterstodoourbiddingsofascinatingButtobefascinatedisalsosometimestobeblind.Severalgiantdamprojectsthreatentodomoreharmthangood. Thelessonfromdamsisthatbigisnotalwaysbeautiful.Itdoesn’’thelpthatbuildingabigpowerfuldamhasbecomeasymbolofachievementfornationsandpeoplestrivingtoassertthemselves.Egypt’’sleadershipintheArabworldwascementedbytheAswanHighDam.Turkey’’sbidforFirstWorldstatusincludesthegiantAtaturkDam. Butbigdamstendnottoworkasintended.TheAswanDamforexamplestoppedtheNilefloodingbutdeprivedEgyptofthefertilesiltthatfloodsleft―allinreturnforagiantreservoirofdiseasewhichisnowsofullofsiltthatitbarelygenerateselectricity. Andyetthemythofcontrollingthewaterspersists.ThisweekintheheartofcivilizedEuropeSlovaksandHungariansstoppedjustshortofsendinginthetroopsintheircontentionoveradamontheDanube.Thehugecomplexwillprobablyhavealltheusualproblemsofbigdams.ButSlovakiaisbiddingforindependencefromtheCzechsandnowneedsadamtoproveitself. MeanwhileinIndiatheWorldBankhasgiventhego-aheadtotheevenmorewrong-headedNarmadaDam.Andthebankhasdonethiseventhoughitsadvisorssaythedamwillcausehardshipforthepowerlessandenvironmentaldestruction.Thebenefitsareforthepowerfulbuttheyarefarfromguaranteed. Properscientificstudyoftheimpactsofdamsandofthecostsandbenefitsofcontrollingwatercanhelptoresolvetheseconflicts.Hydroelectricpowerandfloodcontrolandirrigationarepossiblewithoutbuildingmonsterdams.Butwhenyouaredealingwithmythsitishardtobeeitherproperorscientific.ItistimethattheworldlearnedthelessonsofAswan.Youdon’’tneedadamtobesaved. Whatisthemythconcerninggiantdams____________.
. Yourmobilephoneismissing.Writeanoticelookingforitwhichshouldinclude: 1detaileddescriptionofthephone 2timeandplaceofmissingitand 3waytocontactandreward. Youshouldwriteabout100wordsonANSWERSHEET2.Donotsignyournameattheendofthenotice.UseLiMinginstead.Youdonotneedtowritetheaddress.10pionts
定根和主根
虎杖的特征是
Fewcreationsofbigtechnologycapturetheimaginationlikegiantdams.Perhapsitishumankind’’slongsufferingatthemercyoffloodanddroughtthatmakestheideaofforcingthewaterstodoourbiddingsofascinatingButtobefascinatedisalsosometimestobeblind.Severalgiantdamprojectsthreatentodomoreharmthangood. Thelessonfromdamsisthatbigisnotalwaysbeautiful.Itdoesn’’thelpthatbuildingabigpowerfuldamhasbecomeasymbolofachievementfornationsandpeoplestrivingtoassertthemselves.Egypt’’sleadershipintheArabworldwascementedbytheAswanHighDam.Turkey’’sbidforFirstWorldstatusincludesthegiantAtaturkDam. Butbigdamstendnottoworkasintended.TheAswanDamforexamplestoppedtheNilefloodingbutdeprivedEgyptofthefertilesiltthatfloodsleft―allinreturnforagiantreservoirofdiseasewhichisnowsofullofsiltthatitbarelygenerateselectricity. Andyetthemythofcontrollingthewaterspersists.ThisweekintheheartofcivilizedEuropeSlovaksandHungariansstoppedjustshortofsendinginthetroopsintheircontentionoveradamontheDanube.Thehugecomplexwillprobablyhavealltheusualproblemsofbigdams.ButSlovakiaisbiddingforindependencefromtheCzechsandnowneedsadamtoproveitself. MeanwhileinIndiatheWorldBankhasgiventhego-aheadtotheevenmorewrong-headedNarmadaDam.Andthebankhasdonethiseventhoughitsadvisorssaythedamwillcausehardshipforthepowerlessandenvironmentaldestruction.Thebenefitsareforthepowerfulbuttheyarefarfromguaranteed. Properscientificstudyoftheimpactsofdamsandofthecostsandbenefitsofcontrollingwatercanhelptoresolvetheseconflicts.Hydroelectricpowerandfloodcontrolandirrigationarepossiblewithoutbuildingmonsterdams.Butwhenyouaredealingwithmythsitishardtobeeitherproperorscientific.ItistimethattheworldlearnedthelessonsofAswan.Youdon’’tneedadamtobesaved. Thethirdsentenceofparagraph1impliesthat____________.
Rubiaceae的特征是
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand16thcenturies.Yetmuchhadhappened________Aswasdiscussedbeforeitwasnot______the19thcenturythatthenewspaperbecamethedominantpre-electronic______followinginthewakeofthepamphletandthebookandinthe________oftheperiodical.Itwasduringthesametimethatthecommunicationsrevolution________upbeginningwithtransporttherailwayandleading________throughthetelegraphthetelephoneradioandmotionpictures________the20th-centuryworldofthemotorcarandtheairplane.Noteveryoneseesthatprocessin________Itisimportanttodoso. Itisgenerallyrecognized________thattheintroductionofthecomputerintheearly20thcentury________bytheinventionoftheintegratedcircuitduringthe1960sradicallychangedtheprocess________itsimpactonthemediawasnotimmediately________Astimewentbycomputersbecamesmallerandmorepowerfulandtheybecamepersonaltooaswellas________withdisplaybecomingsharperandstorage________increasing.Theywerethoughtoflikepeople________generationswiththedistancebetweengenerationsmuch________. Itwaswithinthecomputeragethattheterminformationsocietybegantobewidelyusedtodescribethe________withinwhichwenowlive.Thecommunicationsrevolutionhas________bothworkandleisureandhowwethinkandfeelbothaboutplaceandtimebuttherehavebeen________viewsaboutitseconomicpoliticalsocialandculturalimplications.Benefitshavebeenweighed________harmfuloutcomes.Andgeneralizationshaveproveddifficult.
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand16thcenturies.Yetmuchhadhappened________Aswasdiscussedbeforeitwasnot______the19thcenturythatthenewspaperbecamethedominantpre-electronic______followinginthewakeofthepamphletandthebookandinthe________oftheperiodical.Itwasduringthesametimethatthecommunicationsrevolution________upbeginningwithtransporttherailwayandleading________throughthetelegraphthetelephoneradioandmotionpictures________the20th-centuryworldofthemotorcarandtheairplane.Noteveryoneseesthatprocessin________Itisimportanttodoso. Itisgenerallyrecognized________thattheintroductionofthecomputerintheearly20thcentury________bytheinventionoftheintegratedcircuitduringthe1960sradicallychangedtheprocess________itsimpactonthemediawasnotimmediately________Astimewentbycomputersbecamesmallerandmorepowerfulandtheybecamepersonaltooaswellas________withdisplaybecomingsharperandstorage________increasing.Theywerethoughtoflikepeople________generationswiththedistancebetweengenerationsmuch________. Itwaswithinthecomputeragethattheterminformationsocietybegantobewidelyusedtodescribethe________withinwhichwenowlive.Thecommunicationsrevolutionhas________bothworkandleisureandhowwethinkandfeelbothaboutplaceandtimebuttherehavebeen________viewsaboutitseconomicpoliticalsocialandculturalimplications.Benefitshavebeenweighed________harmfuloutcomes.Andgeneralizationshaveproveddifficult.
某一药用植物的花为单被花请举出3个离瓣花亚纲具单被花的科并以表格的形式区别它们每科写出2种药用植物的学名并说明其药用部分
Alargeproportionofthestudiesofbehaviorusedanimalsassubjectsespeciallypigeonsratsandrabbits.Thereareanumberofreasonswhyresearchersinthisfieldfrequentlychoosetoconducttheirexperimentswithnonhumansubjects.Firstofallthepossibilityofaplaceboeffectisminimizedwithanimalsubjects.46Whereasahumansubject’’sbehaviormaybedrasticallyalteredbytheknowledgethatheorsheisbeingobservedthisisunlikelywithanimalsubjectsbecausemoststudieswithanimalsubjectsareconductedinsuchawaythattheanimaldoesnotknowitsbehaviorisbeingmonitoredandrecorded.Furthermoreitisunlikelythatananimalsubjectwillbemotivatedeithertopleaseordispleasetheexperimenteramotivethatcanruinastudywithhumansubjects.Asecondreasonforusinganimalsubjectsisconvenience.Thespeciesmostcommonlyusedassubjectsareeasyandinexpensivetocareforandanimalsofaspecificageandsexcanbeobtainedinanyquantitiestheexperimenterneeds.47Onceanimalsubjectsareobtainedtheirparticipationisasregularastheexperimenter’’s--animalsubjectsneverfailtoshowupfortheirappointmentswhichisunfortunatelynotthecasewithhumansubjects. 48Probablythebiggestadvantageofdomesticatedanimalsubjectsisthattheirenvironmentcanbecontrolledtoamuchgreaterextentthanispossiblewitheitherwildanimalsorhumansubjects.Thisisespeciallyimportantinexperimentsonlearningwherepreviousexperiencecanhavealargeeffectonasubject’’sperformanceinanewlearningsituation.Likewiseifahumansubjecttriestosolvesomemysteryaspartofalearningexperimenttheexperimentercannotbesurehowmanysimilarproblemsthesubjecthasencounteredinhislifetime.49Whenanimalsarebredandraisedinthelaboratoryhowevertheirenvironmentscanbeconstructedtomakesurethattheyhavenocontactwithobjectsoreventssimilartothosetheywillencounterintheexperiment. Afinalreasonforusinganimalsubjectsisthatofcomparativesimplicity.50JustasachildtryingtolearnelectricityisbetteroffstartingwithaflashlightthanaradioresearchersmayhaveabetterchanceofdiscoveringthebasicprinciplesoflearningbyexaminingcreaturesthatarelessintelligentandlesscomplexthanhumanbeingsTheassumptionhereisthatalthoughhumanbeingsdifferfromotheranimalsinsomerespectstheyarealsosimilarinsomerespectsanditisthesecommonalitiesthatcanbeinvestigatedwithanimalsubjects.
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand16thcenturies.Yetmuchhadhappened________Aswasdiscussedbeforeitwasnot______the19thcenturythatthenewspaperbecamethedominantpre-electronic______followinginthewakeofthepamphletandthebookandinthe________oftheperiodical.Itwasduringthesametimethatthecommunicationsrevolution________upbeginningwithtransporttherailwayandleading________throughthetelegraphthetelephoneradioandmotionpictures________the20th-centuryworldofthemotorcarandtheairplane.Noteveryoneseesthatprocessin________Itisimportanttodoso. Itisgenerallyrecognized________thattheintroductionofthecomputerintheearly20thcentury________bytheinventionoftheintegratedcircuitduringthe1960sradicallychangedtheprocess________itsimpactonthemediawasnotimmediately________Astimewentbycomputersbecamesmallerandmorepowerfulandtheybecamepersonaltooaswellas________withdisplaybecomingsharperandstorage________increasing.Theywerethoughtoflikepeople________generationswiththedistancebetweengenerationsmuch________. Itwaswithinthecomputeragethattheterminformationsocietybegantobewidelyusedtodescribethe________withinwhichwenowlive.Thecommunicationsrevolutionhas________bothworkandleisureandhowwethinkandfeelbothaboutplaceandtimebuttherehavebeen________viewsaboutitseconomicpoliticalsocialandculturalimplications.Benefitshavebeenweighed________harmfuloutcomes.Andgeneralizationshaveproveddifficult.
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand16thcenturies.Yetmuchhadhappened________Aswasdiscussedbeforeitwasnot______the19thcenturythatthenewspaperbecamethedominantpre-electronic______followinginthewakeofthepamphletandthebookandinthe________oftheperiodical.Itwasduringthesametimethatthecommunicationsrevolution________upbeginningwithtransporttherailwayandleading________throughthetelegraphthetelephoneradioandmotionpictures________the20th-centuryworldofthemotorcarandtheairplane.Noteveryoneseesthatprocessin________Itisimportanttodoso. Itisgenerallyrecognized________thattheintroductionofthecomputerintheearly20thcentury________bytheinventionoftheintegratedcircuitduringthe1960sradicallychangedtheprocess________itsimpactonthemediawasnotimmediately________Astimewentbycomputersbecamesmallerandmorepowerfulandtheybecamepersonaltooaswellas________withdisplaybecomingsharperandstorage________increasing.Theywerethoughtoflikepeople________generationswiththedistancebetweengenerationsmuch________. Itwaswithinthecomputeragethattheterminformationsocietybegantobewidelyusedtodescribethe________withinwhichwenowlive.Thecommunicationsrevolutionhas________bothworkandleisureandhowwethinkandfeelbothaboutplaceandtimebuttherehavebeen________viewsaboutitseconomicpoliticalsocialandculturalimplications.Benefitshavebeenweighed________harmfuloutcomes.Andgeneralizationshaveproveddifficult.
Alargeproportionofthestudiesofbehaviorusedanimalsassubjectsespeciallypigeonsratsandrabbits.Thereareanumberofreasonswhyresearchersinthisfieldfrequentlychoosetoconducttheirexperimentswithnonhumansubjects.Firstofallthepossibilityofaplaceboeffectisminimizedwithanimalsubjects.46Whereasahumansubject’’sbehaviormaybedrasticallyalteredbytheknowledgethatheorsheisbeingobservedthisisunlikelywithanimalsubjectsbecausemoststudieswithanimalsubjectsareconductedinsuchawaythattheanimaldoesnotknowitsbehaviorisbeingmonitoredandrecorded.Furthermoreitisunlikelythatananimalsubjectwillbemotivatedeithertopleaseordispleasetheexperimenteramotivethatcanruinastudywithhumansubjects.Asecondreasonforusinganimalsubjectsisconvenience.Thespeciesmostcommonlyusedassubjectsareeasyandinexpensivetocareforandanimalsofaspecificageandsexcanbeobtainedinanyquantitiestheexperimenterneeds.47Onceanimalsubjectsareobtainedtheirparticipationisasregularastheexperimenter’’s--animalsubjectsneverfailtoshowupfortheirappointmentswhichisunfortunatelynotthecasewithhumansubjects. 48Probablythebiggestadvantageofdomesticatedanimalsubjectsisthattheirenvironmentcanbecontrolledtoamuchgreaterextentthanispossiblewitheitherwildanimalsorhumansubjects.Thisisespeciallyimportantinexperimentsonlearningwherepreviousexperiencecanhavealargeeffectonasubject’’sperformanceinanewlearningsituation.Likewiseifahumansubjecttriestosolvesomemysteryaspartofalearningexperimenttheexperimentercannotbesurehowmanysimilarproblemsthesubjecthasencounteredinhislifetime.49Whenanimalsarebredandraisedinthelaboratoryhowevertheirenvironmentscanbeconstructedtomakesurethattheyhavenocontactwithobjectsoreventssimilartothosetheywillencounterintheexperiment. Afinalreasonforusinganimalsubjectsisthatofcomparativesimplicity.50JustasachildtryingtolearnelectricityisbetteroffstartingwithaflashlightthanaradioresearchersmayhaveabetterchanceofdiscoveringthebasicprinciplesoflearningbyexaminingcreaturesthatarelessintelligentandlesscomplexthanhumanbeingsTheassumptionhereisthatalthoughhumanbeingsdifferfromotheranimalsinsomerespectstheyarealsosimilarinsomerespectsanditisthesecommonalitiesthatcanbeinvestigatedwithanimalsubjects.
Ahistoryoflongandeffortlesssuccesscanbeadreadfulhandicapbutifproperlyhandleditmaybecomeadrivingforce.WhentheUnitedStatesenteredjustsuchaglowingperiodaftertheendoftheSecondWorldWarithadamarketeighttimeslargerthananycompetitorgivingitsindustriesunparalleledeconomiesofscale.Itsscientistsweretheworld’’sbestitsworkerswerethemostskilled.AmericaandAmericanswereprosperousbeyondthedreamsoftheEuropeansandAsianswhoseeconomiesthewarhaddestroyed. Itwasinevitablethatthisprimacyshouldhavenarrowedasothercountriesgrewricher.Justasinevitablytheretreatfrompredominanceprovedpainful.Bythemid-1980sAmericanshadfoundthemselvesatalossovertheirfadingindustrialcompetitiveness.SomehugeAmericanindustriessuchasconsumerelectronicshadshrunkorvanishedinthefaceofforeigncompetition.By1987therewasonlyoneAmericantelevisionmakerleftZenith.Nowthereisnone:ZenithwasboughtbySouthKorea’’sLGElectronicsinJuly.Foreign-madecarsandtextilesweresweepingintothedomesticmarket.America’’smachine-toolindustrywasontheropes.ForawhileitlookedasthoughthemakingofsemiconductorswhichAmericahadinventedandwhichsatattheheartofthenewcomputeragewasgoingtobethenextcasualty. Allofthiscausedacrisisofconfidence.Americansstoppedtakingprosperityforgranted.Theybegantobelievethattheirwayofdoingbusinesswasfailingandthattheirincomeswouldthereforeshortlybegintofallaswell.Themid-1980sbroughtoneinquiryafteranotherintothecausesofAmerica’’sindustrialdecline.Theirsometimessensationalfindingswerefilledwithwarningsaboutthegrowingcompetitionfromoverseas. Howthingshavechanged!In1995theUnitedStatescanlookbackonfiveyearsofsolidgrowthwhileJapanhasbeenstruggling.FewAmericansattributethissolelytosuchobviouscausesasadevalueddollarortheturningofthebusinesscycle.Self-doubthasyieldedtoblindpride.Americanindustryhaschangeditsstructurehasgoneonadiethaslearnttobemorequick-wittedaccordingtoRichardCavanaghexecutivedeanofHarvard’’sKennedySchoolofGovernment.ItmakesmeproudtobeanAmericanjusttoseehowourbusinessesareimprovingtheirproductivitysaysStephenMooreoftheCatoInstituteathink-tankinWashingtonD.C.AndWilliamSahlmanoftheHarvardBusinessSchoolbelievesthatpeoplewilllookbackonthisperiodasagoldenageofbusinessmanagementintheUnitedStates. Whatcanbeinferredfromthepassage
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand16thcenturies.Yetmuchhadhappened________Aswasdiscussedbeforeitwasnot______the19thcenturythatthenewspaperbecamethedominantpre-electronic______followinginthewakeofthepamphletandthebookandinthe________oftheperiodical.Itwasduringthesametimethatthecommunicationsrevolution________upbeginningwithtransporttherailwayandleading________throughthetelegraphthetelephoneradioandmotionpictures________the20th-centuryworldofthemotorcarandtheairplane.Noteveryoneseesthatprocessin________Itisimportanttodoso. Itisgenerallyrecognized________thattheintroductionofthecomputerintheearly20thcentury________bytheinventionoftheintegratedcircuitduringthe1960sradicallychangedtheprocess________itsimpactonthemediawasnotimmediately________Astimewentbycomputersbecamesmallerandmorepowerfulandtheybecamepersonaltooaswellas________withdisplaybecomingsharperandstorage________increasing.Theywerethoughtoflikepeople________generationswiththedistancebetweengenerationsmuch________. Itwaswithinthecomputeragethattheterminformationsocietybegantobewidelyusedtodescribethe________withinwhichwenowlive.Thecommunicationsrevolutionhas________bothworkandleisureandhowwethinkandfeelbothaboutplaceandtimebuttherehavebeen________viewsaboutitseconomicpoliticalsocialandculturalimplications.Benefitshavebeenweighed________harmfuloutcomes.Andgeneralizationshaveproveddifficult.
我党成为执政党后最容易犯的错误是
WhenIdecidedtoquitmyfulltimeemploymentitneveroccurredtomethatImightbecomeapartofanewinternationaltrend.AlateralmovethathurtmyprideandblockedmyprofessionalprogresspromptedmetoabandonmyrelativelyhighprofilecareeralthoughinthemannerofadisgracedgovernmentministerIcoveredmyexitbyclaimingIwantedtospendmoretimewithmyfamily. Curiouslysometwo-and-a-halfyearsandtwonovelslatermyexperimentinwhattheAmericanstermdownshiftinghasturnedmytiredexcuseintoanabsolutereality.IhavebeentransformedfromapassionateadvocateofthephilosophyofhavingitallpreachedbyLindaKelseyforthepastsevenyearsinthepagesofShemagazineintoawomanwhoishappytosettleforabitofeverything. IhavediscoveredasperhapsKelseywillafterhermuch-publicizedresignationfromtheeditorshipofsheafterabuild-upofstressthatabandoningthedoctrineofjugglingyourlifeandmakingthealternativemoveintodownshiftingbringswithitfargreaterrewardsthanfinancialsuccessandsocialstatus.NothingcouldpersuademetoreturntothekindoflifeKelseyusedtoadvocateandIonceenjoyed:12-hourworkingdayspressureddeadlinesthefearfulstrainofofficepoliticsandthelimitationsofbeingaparentonqualitytime. InAmericathemoveawayfromjugglingtoasimplerlessmaterialisticlifestyleisawell-establishedtrend.Downshifting--alsoknowninAmericaasvoluntarysimplicity--hasironicallyevenbredanewareaofwhatmightbetermedanti-consumerism.Thereareanumberofbestsellingdownshiftingself-helpbooksforpeoplewhowanttosimplifytheirlives;therearenewsletterssuchasTheTightwadGazettethatgivehundredsofthousandsofAmericansusefultipsonanythingfromrecyclingtheircling-filmtomakingtheirownsoap;thereareevensupportgroupsforthosewhowanttoachievethemid-’’90sequivalentofdroppingout. WhileinAmericathetrendstartedasareactiontotheeconomicdecline--afterthemassredundanciescausedbydownsizinginthelate’’80s--andisstilllinkedtothepoliticsofthriftinBritainatleastamongthemiddle-classdownshiftersofmyacquaintancewehavedifferentreasonsforseekingtosimplifyourlives. Forthewomenofmygenerationwhowereurgedtokeepjugglingthroughthe’’80sdownshiftinginthmid-’’90sisnotsomuchasearchforthemythicalgoodlife--growingyourownorganicvegetablesandriskingturningintoone--asapersonalrecognitionofyourlimitations. Jugglingone’’slifeprobablymeanslivingalifecharacterizedby______.
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe20thcenturyandthediffusionofprintinginthe15thand16thcenturies.Yetmuchhadhappened________Aswasdiscussedbeforeitwasnot______the19thcenturythatthenewspaperbecamethedominantpre-electronic______followinginthewakeofthepamphletandthebookandinthe________oftheperiodical.Itwasduringthesametimethatthecommunicationsrevolution________upbeginningwithtransporttherailwayandleading________throughthetelegraphthetelephoneradioandmotionpictures________the20th-centuryworldofthemotorcarandtheairplane.Noteveryoneseesthatprocessin________Itisimportanttodoso. Itisgenerallyrecognized________thattheintroductionofthecomputerintheearly20thcentury________bytheinventionoftheintegratedcircuitduringthe1960sradicallychangedtheprocess________itsimpactonthemediawasnotimmediately________Astimewentbycomputersbecamesmallerandmorepowerfulandtheybecamepersonaltooaswellas________withdisplaybecomingsharperandstorage________increasing.Theywerethoughtoflikepeople________generationswiththedistancebetweengenerationsmuch________. Itwaswithinthecomputeragethattheterminformationsocietybegantobewidelyusedtodescribethe________withinwhichwenowlive.Thecommunicationsrevolutionhas________bothworkandleisureandhowwethinkandfeelbothaboutplaceandtimebuttherehavebeen________viewsaboutitseconomicpoliticalsocialandculturalimplications.Benefitshavebeenweighed________harmfuloutcomes.Andgeneralizationshaveproveddifficult.
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________________.
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