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在课程的实施过程中努力使课程计划与班级或学校实践情境在课程目标、内容、方法、组织模式诸方面相互调整、改变，以促使双方彼此协调，这是课程实施的( )
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把课程计划付诸实践并达到预期课程目标的基本途径是
课程实施
教学过程
课程评价
课程标准
古德莱德所划分的五个课程层次中理解的课程和经验的课程属于课程变革过程中的
课程变革阶段
课程实施阶段
课程计划阶段
课程采用阶段
学校中的班级物质情境文化情境人际情境等属于
隐性课程
显性课程
学科课程
活动课程
有关课程相互适应取向的观点正确的是
衡量课程实施成功与否的根本标准是课程实施过程实现预定的课程计划的程度
课程实施过程是课程计划与班级或学校实践情境在课程目标、内容、方法、组织模式诸方面相互调整、改变与适应的过程
这种取向认为，真正的课程是教师与学生联合创造的教育经验，课程实施本质上是在具体教育情境中创生新的教育经验的过程
以上三项都不正确
课程实施是指把课程计划付诸实践的过程它是达到预期的课程目标的基本途径
把课程计划付诸实践的过程属于
课程目标
课程实施
教学任务
课程评价
教师通常在四个方面的因素影响下制定出一份 教学计划
社会、学生、家长和课程
学生、家长、学校和课程
学生、学校、课程和情境
社会、学生、课程和情境
新课程改革过程中需要关注的问题有
新课程计划的特征是新课程有效实施的重要前提
教师是新课程有效实施的关键因素
学校管理是新课程有效实施的必要保障
校外环境支持是影响新课程有效实施的重要因素
学生素质直接影响新课程改革的进程
真正的课程是老师与学生联合创造的教育经验课程实施本质上是在具体教育情境创生新的教育经验的过程既有的课
拒绝取向
相互适应取向
忠实取向
课程创生取向
在课程的实施过程中努力使课程计划与班级或学校实践情境在课程目标内容方法组织模式诸方面相互调整改变以促
忠实取向
适应取向
过程创新取向
课程创新取向
把某项课程变革计划付诸实践的具体过程指的是
课程实施
课程采用
教学组织
教学过程
将课程计划付诸实践的过程属于
课程目标
课程实施
课程设计
课程评价
在课程发展的整个过程中关键的环节是
课程计划
课程实施
课程评价
课程设计
教师想要把课程计划付诸实践并达到预期的课程目标需要通过的基本途径是
教学过程
课程评价
课程标准
课程实施
把课程计划付诸实践并达到预期的课程目标的基本途径是
课程实施
教学过程
课程评价
课程标准
培训是指把课程计划付诸实践的过程它是达到预期的课程目标的基本途径是整个课程设计过程中的一个实际性阶段
课程设计
课程的核对
C课程的反馈
D课程的实施
培训______是指把课程计划付诸实践的过程它是达到预期的课程目标的基本途径是整个课程设计过程中的一
课程设计
课程的核对
课程的反馈
课程的实施
关于课程相互适应取向的表述正确的是
衡量课程实施成功与否的根本标准是课程实施过程实现预定的课程计划的程度
课程实施过程是课程计划与班级或学校实践情境在课程目标、内容、方法、组织模式诸方面相互调整、改变与适应的过程
这种取向认为，真正的课程是教师与学生联合创造的教育经验，课程实施本质上是在具体教育情境中创造新的教育经验的过程
以上都不正确
课程认为设计好的课程计划是可以变动的课程实施过程是课程计划与班级或学校实际情境在课程目标内容方法组织
忠实取向
相互适应取向
缔造取向
创生取向
也叫显在课程正规课程指的是学校情境中以直接的明显的方式呈现的课程即学校有目的有计划传授的学科其主要特
校本课程
综合课程
隐性课程
显性课程
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Almostallourmajorproblemsinvolvehumanbehaviorandtheycannotbesolvedbyphysicalandbiologicaltechnologyalone.Whatisneededisatechnologyofbehaviorbutwehavebeenslowtodevelopthesciencefromwhichsuchatechnologymightbedrawn.61Onedifficultyisthatalmostallofwhatiscalledbehavioralsciencecontinuestotracebehaviortostatesofmindfeelingstraitsofcharacterhumannatureandsoon.Physicsandbiologyoncefollowedsimilarpracticesandadvancedonlywhentheydiscardedthem.62Thebehavioralscienceshavebeenslowtochangepartlybecausetheexplanatoryitemsoftenseemtobedirectlyobservedandpartlybecauseotherkindsofexplanationshavebeenhardtofind.Theenvironmentisobviouslyimportantbutitsrolehasremainedobscure.Itdoesnotpushorpullitselectsandthisfunctionisdifficulttodiscoverandanalyze.63Theroleofnaturalselectioninevolutionwasformulatedonlyalittlemorethanahundredyearsagoandtheselectiveroleoftheenvironmentinshapingandmaintainingthebehavioroftheindividualisonlybeginningtoberecognizedandstudied.Astheinteractionbetweenorganismandenvironmenthascometobeunderstoodhowevereffectsonceassignedtostatesofmindfeelingsandtraitsarebeginningtobetracedtoaccessibleconditionsandatechnologyofbehaviormaythereforebecomeavailable.Itwillnotsolveourproblemshoweveruntilitreplacestraditionalprescientificviewsandthesearestronglyentrenched.Freedomanddignityillustratethedifficulty.64Theyarethepossessionsoftheautonomousselfgovemingmanoftraditionaltheoryandtheyareessentialtopracticesinwhichapersonisheldresponsibleforhisconductandgivencreditforhisachievements.Ascientificanalysisshiftsboththeresponsibilityandtheachievementtotheenvironment.Italsoraisesquestionsconcerningvalues.Whowilluseatechnologyandtowhatends65Untiltheseissuesareresolvedatechnologyofbehaviorwillcontinuetoberejectedandwithitpossiblytheonlywaytosolveourproblems.
Manytheoriesconcerningthecausesofjuveniledelinquencycrimescommittedbyyoungpeoplefocuseitherontheindividualoronsocietyasthemajorcontributinginfluence.Theories________ontheindividualsuggestthatchildrenengageincriminalbehavior________theywerenotsufficientlypenalizedforpreviousmisdeedsorthattheyhavelearnedcriminalbehaviorthrough________withothers.Theoriesfocusingontheroleofsocietysuggestthatchildrencommitcrimesin________totheirfailuretoriseabovetheirsocioeconomicstatus________asarejectionofmiddle-classvalues. Mosttheoriesofjuveniledelinquencyhavefocusedonchildrenfromdisadvantagedfamilies________thefactthatchildrenfromwealthyhomesalsocommitcrimes.Thelattermaycommitcrimes________lackofadequateparentalcontrol.Alltheorieshoweveraretentativeandare________tocriticism. Changesinthesocialstructuremayindirecfiy________juvenilecrimerates.Forexamplechangesintheeconomythat________tofewerjobopportunitiesforyouthandrisingunemployment________makegainfulemploymentincreasinglydifficulttoobtain.Theresultingdiscontentmayin________leadmoreyouthsintocriminalbehavior. Familieshavealso________changestheseyears.Morefamiliesconsistofone-parenthouseholdsortwoworkingparents;________childrenarelikelytohavelesssupervisionathome________wascommoninthetraditionalfamily________Thislackofparentalsupervisionisthoughttobeaninfluenceonjuvenilecrimerates.Other________causesofoffensiveactsincludefrustrationorfailureinschooltheincreased________ofdrugsandalcoholandthegrowing________ofchildabuseandchildneglect.Alltheseconditionstendtoincreasetheprobabilityofachildcommittingacriminalact________adirectcausalrelationshiphasnotyetbeenestablished.
Almostallourmajorproblemsinvolvehumanbehaviorandtheycannotbesolvedbyphysicalandbiologicaltechnologyalone.Whatisneededisatechnologyofbehaviorbutwehavebeenslowtodevelopthesciencefromwhichsuchatechnologymightbedrawn.61Onedifficultyisthatalmostallofwhatiscalledbehavioralsciencecontinuestotracebehaviortostatesofmindfeelingstraitsofcharacterhumannatureandsoon.Physicsandbiologyoncefollowedsimilarpracticesandadvancedonlywhentheydiscardedthem.62Thebehavioralscienceshavebeenslowtochangepartlybecausetheexplanatoryitemsoftenseemtobedirectlyobservedandpartlybecauseotherkindsofexplanationshavebeenhardtofind.Theenvironmentisobviouslyimportantbutitsrolehasremainedobscure.Itdoesnotpushorpullitselectsandthisfunctionisdifficulttodiscoverandanalyze.63Theroleofnaturalselectioninevolutionwasformulatedonlyalittlemorethanahundredyearsagoandtheselectiveroleoftheenvironmentinshapingandmaintainingthebehavioroftheindividualisonlybeginningtoberecognizedandstudied.Astheinteractionbetweenorganismandenvironmenthascometobeunderstoodhowevereffectsonceassignedtostatesofmindfeelingsandtraitsarebeginningtobetracedtoaccessibleconditionsandatechnologyofbehaviormaythereforebecomeavailable.Itwillnotsolveourproblemshoweveruntilitreplacestraditionalprescientificviewsandthesearestronglyentrenched.Freedomanddignityillustratethedifficulty.64Theyarethepossessionsoftheautonomousselfgovemingmanoftraditionaltheoryandtheyareessentialtopracticesinwhichapersonisheldresponsibleforhisconductandgivencreditforhisachievements.Ascientificanalysisshiftsboththeresponsibilityandtheachievementtotheenvironment.Italsoraisesquestionsconcerningvalues.Whowilluseatechnologyandtowhatends65Untiltheseissuesareresolvedatechnologyofbehaviorwillcontinuetoberejectedandwithitpossiblytheonlywaytosolveourproblems.
Agreenhouseeffectwillraisetheearth’’stemperatureenoughbytheyear2100tocausedramaticclimatechangesincreasesealevelsanddisruptfoodproductionUnitedStatesscientistssaidthisweek. Theearth’’satmosphereisheatingataratethatcouldmeantemperaturerisesoftwodegreescentigradebythemiddleofthe21stcenturyandfivedegreescentigradebytheyear2100accordingtoareportissuedbytheUSgovernment’’sEnvironmentalProtectionAgencyEPA. SubstantialincreasesinglobalwarmingmayoccursoonerthanmostofuswouldliketobelievetheEPAsaid. Theagencysaidthefirsteffectsmightbefeltasearlyas1990becausetemperatureswouldberisingmorethanseventimesfastereachdecadebetweennowandtheyear2100thantheyhadbeenforthepast100years. TemperatureincreasesarelikelytobeaccompaniedbydramaticchangesinprecipitationandstormpatternsandariseinglobalaveragesealeveltheEPAreportsaid. Asaresulttheagencysaidagriculturalconditionswillbesignificantlyalteredenvironmentalandeconomicsystemspotentiallydisrupted. TheEPAreportsaidtheburningoffossilfuelswasdirectlyresponsibleformostoftheatmospherebuild-upofcarbondioxidebutthecurrentconcentrationissogreatthatevenaworldwidebanontheuseofsuchfuelswoulddelaythewarmingeffectforonlyafewyears. Awarmerclimatewillraisesealevelsbyheatingandexpandingtheworld’’soceansandcausingglacierstomelttheEPAsaid. Theagencyestimatedthatsealevelscouldriseanythingbetween48to380cminthenext120years. Anincreaseofeven48cmcouldfloodorcausestormdamagetomanyofthemajorportsoftheworlddisrupttransportationnetworksalterunderwaterecologysystemsandcausemajorshiftsinlanddevelopmentpatterns. Onestudycitedinthereportsuggestedthatiftheaverageglobaltemperatureroseby2.5degreescentigraderegionalclimaticconditionsmightbesimilartothoseduringthelastinterglacialperiod120000yearsago. Duringthisperiodoceanswerefivetosevenmetreshigherthantoday’’sfloodingtheshoresofEuropeandwesternSiberiaandmakingScandinaviaanisland. Theagencysaidthatwhilethewarmingtrendcouldhavesomebeneficialeffectssuchasreducingheatingcostsandimprovingclimateandgrowingseasonsinsomepartsoftheworldtherewouldbedifficultyinredirectingnationaleconomiestoadapttothenewclimatepatterns. TheEPAsaiditseemedunlikelythatthenationsoftheworldwouldreachaconsensusonsteptoreducecarbondioxideemissions.Insteaditurgedmoreresearchonthegreenhouseeffectandstressedtheneedforbetterplanningtocopewiththechangesthewarmingtrendisexpectedtoproduce. Thereportsaysthatiftheuseoffossilfuelswerebanned
WhataccountsforthegreatoutburstofmajorinventionsinearlyAmerica―breakthroughssuchasthetelegraphthesteamboatandtheweavingmachine AmongthemanyshapingfactorsIwouldsingleoutthecountry’’sexcellentelementaryschools;alaborforcethatwelcomedthenewtechnology;thepracticeofgivingpremiumstoinventors;andabovealltheAmericangeniusfornonverbalspatialthinkingaboutthingstechnological. WhymentiontheelementaryschoolsBecausethankstotheseschoolsourearlymechanicespeciallyintheNewEnglandandMiddleAtlanticstatesweregenerallyliterateandathomeinarithmeticandinsomeaspectsofgeometryandtrigonometry. AcuteforeignobserversrelatedAmericanadaptivenessandinventivenesstothiseducationaladvantage.AsamemberofaBritishcommissionvisitingherein1853reportedWithamindpreparedbythoroughschooldisciplinetheAmericanboydevelopsrapidlyintotheskilledworkman. Afurtherstimulustoinventioncamefromthepremiumsystemwhichprecededourpatentsystemandforyearsranparallelwithit.Thisapproachoriginatedabroadofferedinventorsmedalscashprizesandotherincentives. IntheUnitedStatesmultitudesofpremiumsfornewdeviceswereawardedatcountryfairsandattheindustrialfairsinmajorcities.Americansflockedtothesefairstoadmirethenewmachinesandthustorenewtheirfaithinthebeneficenceoftechnologicaladvance. GiventhisoptimisticapproachtotechnologicalinnovationtheAmericanworkertookreadilytothatspecialkindofnonverbalthinkingrequiredinmechanicaltechnology.AsEugeneFergusonhaspointedoutAtechnologistthinksaboutobjectsthatcannotbereducedtounambiguousverbaldescriptions;theyaredealtwithinhismindbyavisualnonverbalprocess...Thedesignerandtheinventor...areabletoassembleandmanipulateintheirmindsdevicesthatasyetdonotexist. Thisnonverbalspatialthinkingcanbejustascreativeaspaintingandwriting.RobertFultononcewroteThemechanicshouldsitdownamongleversscrewswedgeswheelsetc.likeapoetamongthelettersofthealphabetconsideringthemasanexhibitionofhisthoughtsinwhichanewarrangementtransmitsanewidea. Whenalltheseshapingforces―schoolsopenattitudesthepremiumsystemageniusforspatialthinking―interactedwithoneanotherontherichU.S.mainlandtheyproducedthatAmericancharacteristicemulation.Todaythatwordimpliesmereimitation.Butinearliertimesitmeantafriendlybutcompetitivestrivingforfameandexcellence. AccordingtotheauthorthegreatoutburstofmajorinventionsinearlyAmericawasinalargepartdueto_________________.
Inrecentyearsrailroadshavebeencombiningwitheachothermergingintosupersystemscausingheightenedconcernsaboutmonopoly.Asrecentlyas1995thetopfourrailroadsaccountedforunder70percentofthetotalton-milesmovedbyrails.Nextyearafteraseriesofmergersiscompletedjustfourrailroadswillcontrolwellover90percentofallthefreightmovedbymajorrailcarriers. Supportersofthenewsupersystemsarguethatthesemergerswillallowforsubstantialcostreductionsandbettercoordinatedservice.Anythreatofmonopolytheyargueisremovedbyfiercecompetitionfromtrucks.Butmanyshipperscomplainthatforheavybulkcommoditiestravelinglongdistancessuchascoalchemicalsandgraintruckingistoocostlyandtherailroadsthereforehavethembythethroat. Thevastconsolidationwithintherailindustrymeansthatmostshippersareservedbyonlyonerailcompany.Railroadstypicallychargesuchcaptiveshippers20to30percentmorethantheydowhenanotherrailroadiscompetingforthebusiness.Shipperswhofeeltheyarebeingoverchargedhavetherighttoappealtothefederalgovernment’’sSurfaceTransportationBoardforratereliefbuttheprocessisexpensivetimeconsumingandwillworkonlyintrulyextremecases. Railroadsjustifyratediscriminationagainstcaptiveshippersonthegroundsthatinthelongrunitreduceseveryone’’scost.Ifrailroadschargedallcustomersthesameaverageratetheyargueshipperswhohavetheoptionofswitchingtotrucksorotherformsoftransportationwoulddosoleavingremainingcustomerstoshoulderthecostofkeepinguptheline.It’’satheorytowhichmanyeconomistssubscribebutinpracticeitoftenleavesrailroadsinthepositionofdeterminingwhichcompanieswillflourishandwhichwillfail.DowereallywantrailroadstobethearbitersofwhowinsandwholosesinthemarketplaceasksMartinBercoviciaWashingtonlawyerwhofrequentlyrepresentsshippers. Manycaptiveshippersalsoworrytheywillsoonbehitwitharoundofhugerateincreases.Therailroadindustryasawholedespiteitsbrighteningfortunesstilldoesnotearnenoughtocoverthecostofthecapitalitmustinvesttokeepupwithitssurgingtraffic.YetrailroadscontinuetoborrowbillionstoacquireoneanotherwithWallStreetcheeringthemon.Considerthe$10.2billionbidbyNorfolkSouthernandCSXtoacquireConrailthisyear.Conrail’’snetrailwayoperatingincomein1996wasjust$427millionlessthanhalfofthecarryingcostsofthetransaction.Who’’sgoingtopayfortherestofthebillManycaptiveshippersfearthattheywillasNorfolkSouthernandCSXincreasetheirgriponthemarket. .Accordingtothosewhosupportmergersrailwaymonopolyisunlikelybecause
Inrecentyearsrailroadshavebeencombiningwitheachothermergingintosupersystemscausingheightenedconcernsaboutmonopoly.Asrecentlyas1995thetopfourrailroadsaccountedforunder70percentofthetotalton-milesmovedbyrails.Nextyearafteraseriesofmergersiscompletedjustfourrailroadswillcontrolwellover90percentofallthefreightmovedbymajorrailcarriers. Supportersofthenewsupersystemsarguethatthesemergerswillallowforsubstantialcostreductionsandbettercoordinatedservice.Anythreatofmonopolytheyargueisremovedbyfiercecompetitionfromtrucks.Butmanyshipperscomplainthatforheavybulkcommoditiestravelinglongdistancessuchascoalchemicalsandgraintruckingistoocostlyandtherailroadsthereforehavethembythethroat. Thevastconsolidationwithintherailindustrymeansthatmostshippersareservedbyonlyonerailcompany.Railroadstypicallychargesuchcaptiveshippers20to30percentmorethantheydowhenanotherrailroadiscompetingforthebusiness.Shipperswhofeeltheyarebeingoverchargedhavetherighttoappealtothefederalgovernment’’sSurfaceTransportationBoardforratereliefbuttheprocessisexpensivetimeconsumingandwillworkonlyintrulyextremecases. Railroadsjustifyratediscriminationagainstcaptiveshippersonthegroundsthatinthelongrunitreduceseveryone’’scost.Ifrailroadschargedallcustomersthesameaverageratetheyargueshipperswhohavetheoptionofswitchingtotrucksorotherformsoftransportationwoulddosoleavingremainingcustomerstoshoulderthecostofkeepinguptheline.It’’satheorytowhichmanyeconomistssubscribebutinpracticeitoftenleavesrailroadsinthepositionofdeterminingwhichcompanieswillflourishandwhichwillfail.DowereallywantrailroadstobethearbitersofwhowinsandwholosesinthemarketplaceasksMartinBercoviciaWashingtonlawyerwhofrequentlyrepresentsshippers. Manycaptiveshippersalsoworrytheywillsoonbehitwitharoundofhugerateincreases.Therailroadindustryasawholedespiteitsbrighteningfortunesstilldoesnotearnenoughtocoverthecostofthecapitalitmustinvesttokeepupwithitssurgingtraffic.YetrailroadscontinuetoborrowbillionstoacquireoneanotherwithWallStreetcheeringthemon.Considerthe$10.2billionbidbyNorfolkSouthernandCSXtoacquireConrailthisyear.Conrail’’snetrailwayoperatingincomein1996wasjust$427millionlessthanhalfofthecarryingcostsofthetransaction.Who’’sgoingtopayfortherestofthebillManycaptiveshippersfearthattheywillasNorfolkSouthernandCSXincreasetheirgriponthemarket. Itcanbeinferredfromparagraph3that
YouareagraduateofHistory.Writealettertooneofyourcollegeprofessortorequestarecommendationlettertosupportyourapplicationforapositionwithapublishingcompany.Yourlettershouldcover: 1remindinghimofyouandyourperformance 2thingsyouhopetobereflectedinhisletterand 3thewayofmailingtheletter. Youshouldwriteabout100wordsonANSWERSHEET2.Donotsignyournameattheendoftheletter.UseLiMinginstead.Youdonotneedtowritetheaddress.10points
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. Inparagraph5thepowerlessprobablyrefersto____________.
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. Whattheauthortriestosuggestmaybestbeinterpretedas____________.
Inrecentyearsrailroadshavebeencombiningwitheachothermergingintosupersystemscausingheightenedconcernsaboutmonopoly.Asrecentlyas1995thetopfourrailroadsaccountedforunder70percentofthetotalton-milesmovedbyrails.Nextyearafteraseriesofmergersiscompletedjustfourrailroadswillcontrolwellover90percentofallthefreightmovedbymajorrailcarriers. Supportersofthenewsupersystemsarguethatthesemergerswillallowforsubstantialcostreductionsandbettercoordinatedservice.Anythreatofmonopolytheyargueisremovedbyfiercecompetitionfromtrucks.Butmanyshipperscomplainthatforheavybulkcommoditiestravelinglongdistancessuchascoalchemicalsandgraintruckingistoocostlyandtherailroadsthereforehavethembythethroat. Thevastconsolidationwithintherailindustrymeansthatmostshippersareservedbyonlyonerailcompany.Railroadstypicallychargesuchcaptiveshippers20to30percentmorethantheydowhenanotherrailroadiscompetingforthebusiness.Shipperswhofeeltheyarebeingoverchargedhavetherighttoappealtothefederalgovernment’’sSurfaceTransportationBoardforratereliefbuttheprocessisexpensivetimeconsumingandwillworkonlyintrulyextremecases. Railroadsjustifyratediscriminationagainstcaptiveshippersonthegroundsthatinthelongrunitreduceseveryone’’scost.Ifrailroadschargedallcustomersthesameaverageratetheyargueshipperswhohavetheoptionofswitchingtotrucksorotherformsoftransportationwoulddosoleavingremainingcustomerstoshoulderthecostofkeepinguptheline.It’’satheorytowhichmanyeconomistssubscribebutinpracticeitoftenleavesrailroadsinthepositionofdeterminingwhichcompanieswillflourishandwhichwillfail.DowereallywantrailroadstobethearbitersofwhowinsandwholosesinthemarketplaceasksMartinBercoviciaWashingtonlawyerwhofrequentlyrepresentsshippers. Manycaptiveshippersalsoworrytheywillsoonbehitwitharoundofhugerateincreases.Therailroadindustryasawholedespiteitsbrighteningfortunesstilldoesnotearnenoughtocoverthecostofthecapitalitmustinvesttokeepupwithitssurgingtraffic.YetrailroadscontinuetoborrowbillionstoacquireoneanotherwithWallStreetcheeringthemon.Considerthe$10.2billionbidbyNorfolkSouthernandCSXtoacquireConrailthisyear.Conrail’’snetrailwayoperatingincomein1996wasjust$427millionlessthanhalfofthecarryingcostsofthetransaction.Who’’sgoingtopayfortherestofthebillManycaptiveshippersfearthattheywillasNorfolkSouthernandCSXincreasetheirgriponthemarket. .Accordingtothetextthecostincreaseintherailindustryismainlycausedby
Agreenhouseeffectwillraisetheearth’’stemperatureenoughbytheyear2100tocausedramaticclimatechangesincreasesealevelsanddisruptfoodproductionUnitedStatesscientistssaidthisweek. Theearth’’satmosphereisheatingataratethatcouldmeantemperaturerisesoftwodegreescentigradebythemiddleofthe21stcenturyandfivedegreescentigradebytheyear2100accordingtoareportissuedbytheUSgovernment’’sEnvironmentalProtectionAgencyEPA. SubstantialincreasesinglobalwarmingmayoccursoonerthanmostofuswouldliketobelievetheEPAsaid. Theagencysaidthefirsteffectsmightbefeltasearlyas1990becausetemperatureswouldberisingmorethanseventimesfastereachdecadebetweennowandtheyear2100thantheyhadbeenforthepast100years. TemperatureincreasesarelikelytobeaccompaniedbydramaticchangesinprecipitationandstormpatternsandariseinglobalaveragesealeveltheEPAreportsaid. Asaresulttheagencysaidagriculturalconditionswillbesignificantlyalteredenvironmentalandeconomicsystemspotentiallydisrupted. TheEPAreportsaidtheburningoffossilfuelswasdirectlyresponsibleformostoftheatmospherebuild-upofcarbondioxidebutthecurrentconcentrationissogreatthatevenaworldwidebanontheuseofsuchfuelswoulddelaythewarmingeffectforonlyafewyears. Awarmerclimatewillraisesealevelsbyheatingandexpandingtheworld’’soceansandcausingglacierstomelttheEPAsaid. Theagencyestimatedthatsealevelscouldriseanythingbetween48to380cminthenext120years. Anincreaseofeven48cmcouldfloodorcausestormdamagetomanyofthemajorportsoftheworlddisrupttransportationnetworksalterunderwaterecologysystemsandcausemajorshiftsinlanddevelopmentpatterns. Onestudycitedinthereportsuggestedthatiftheaverageglobaltemperatureroseby2.5degreescentigraderegionalclimaticconditionsmightbesimilartothoseduringthelastinterglacialperiod120000yearsago. Duringthisperiodoceanswerefivetosevenmetreshigherthantoday’’sfloodingtheshoresofEuropeandwesternSiberiaandmakingScandinaviaanisland. Theagencysaidthatwhilethewarmingtrendcouldhavesomebeneficialeffectssuchasreducingheatingcostsandimprovingclimateandgrowingseasonsinsomepartsoftheworldtherewouldbedifficultyinredirectingnationaleconomiestoadapttothenewclimatepatterns. TheEPAsaiditseemedunlikelythatthenationsoftheworldwouldreachaconsensusonsteptoreducecarbondioxideemissions.Insteaditurgedmoreresearchonthegreenhouseeffectandstressedtheneedforbetterplanningtocopewiththechangesthewarmingtrendisexpectedtoproduce. WhichofthefollowingisincludedintheEPAreport
Manytheoriesconcerningthecausesofjuveniledelinquencycrimescommittedbyyoungpeoplefocuseitherontheindividualoronsocietyasthemajorcontributinginfluence.Theories________ontheindividualsuggestthatchildrenengageincriminalbehavior________theywerenotsufficientlypenalizedforpreviousmisdeedsorthattheyhavelearnedcriminalbehaviorthrough________withothers.Theoriesfocusingontheroleofsocietysuggestthatchildrencommitcrimesin________totheirfailuretoriseabovetheirsocioeconomicstatus________asarejectionofmiddle-classvalues. Mosttheoriesofjuveniledelinquencyhavefocusedonchildrenfromdisadvantagedfamilies________thefactthatchildrenfromwealthyhomesalsocommitcrimes.Thelattermaycommitcrimes________lackofadequateparentalcontrol.Alltheorieshoweveraretentativeandare________tocriticism. Changesinthesocialstructuremayindirecfiy________juvenilecrimerates.Forexamplechangesintheeconomythat________tofewerjobopportunitiesforyouthandrisingunemployment________makegainfulemploymentincreasinglydifficulttoobtain.Theresultingdiscontentmayin________leadmoreyouthsintocriminalbehavior. Familieshavealso________changestheseyears.Morefamiliesconsistofone-parenthouseholdsortwoworkingparents;________childrenarelikelytohavelesssupervisionathome________wascommoninthetraditionalfamily________Thislackofparentalsupervisionisthoughttobeaninfluenceonjuvenilecrimerates.Other________causesofoffensiveactsincludefrustrationorfailureinschooltheincreased________ofdrugsandalcoholandthegrowing________ofchildabuseandchildneglect.Alltheseconditionstendtoincreasetheprobabilityofachildcommittingacriminalact________adirectcausalrelationshiphasnotyetbeenestablished.
WhataccountsforthegreatoutburstofmajorinventionsinearlyAmerica―breakthroughssuchasthetelegraphthesteamboatandtheweavingmachine AmongthemanyshapingfactorsIwouldsingleoutthecountry’’sexcellentelementaryschools;alaborforcethatwelcomedthenewtechnology;thepracticeofgivingpremiumstoinventors;andabovealltheAmericangeniusfornonverbalspatialthinkingaboutthingstechnological. WhymentiontheelementaryschoolsBecausethankstotheseschoolsourearlymechanicespeciallyintheNewEnglandandMiddleAtlanticstatesweregenerallyliterateandathomeinarithmeticandinsomeaspectsofgeometryandtrigonometry. AcuteforeignobserversrelatedAmericanadaptivenessandinventivenesstothiseducationaladvantage.AsamemberofaBritishcommissionvisitingherein1853reportedWithamindpreparedbythoroughschooldisciplinetheAmericanboydevelopsrapidlyintotheskilledworkman. Afurtherstimulustoinventioncamefromthepremiumsystemwhichprecededourpatentsystemandforyearsranparallelwithit.Thisapproachoriginatedabroadofferedinventorsmedalscashprizesandotherincentives. IntheUnitedStatesmultitudesofpremiumsfornewdeviceswereawardedatcountryfairsandattheindustrialfairsinmajorcities.Americansflockedtothesefairstoadmirethenewmachinesandthustorenewtheirfaithinthebeneficenceoftechnologicaladvance. GiventhisoptimisticapproachtotechnologicalinnovationtheAmericanworkertookreadilytothatspecialkindofnonverbalthinkingrequiredinmechanicaltechnology.AsEugeneFergusonhaspointedoutAtechnologistthinksaboutobjectsthatcannotbereducedtounambiguousverbaldescriptions;theyaredealtwithinhismindbyavisualnonverbalprocess...Thedesignerandtheinventor...areabletoassembleandmanipulateintheirmindsdevicesthatasyetdonotexist. Thisnonverbalspatialthinkingcanbejustascreativeaspaintingandwriting.RobertFultononcewroteThemechanicshouldsitdownamongleversscrewswedgeswheelsetc.likeapoetamongthelettersofthealphabetconsideringthemasanexhibitionofhisthoughtsinwhichanewarrangementtransmitsanewidea. Whenalltheseshapingforces―schoolsopenattitudesthepremiumsystemageniusforspatialthinking―interactedwithoneanotherontherichU.S.mainlandtheyproducedthatAmericancharacteristicemulation.Todaythatwordimpliesmereimitation.Butinearliertimesitmeantafriendlybutcompetitivestrivingforfameandexcellence. Atechnologistcanbecomparedtoanartistbecause_________________.
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