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1There'sadimmerswitchinsidethesunthatcausesitsbrightnesstoriseandfallontimescalesofaround100,000years-exactlythesameperiodasbetweeniceagesonEarth.Sosaysaphysicistwhohascreatedacomputermodelofourstar'score. 2RobertEhrlichofGeorgeMasonUniversityinFairfax,Virginia,modelledtheeffectoftemperaturefluctuationsinthesun'sinterior.Accordingtothestandardview,thetemperatureofthesun'scoreisheldconstantbytheopposingpressuresofgravityandnuclearfusion.However,Ehrlichbelievedthatslightvariationsshouldbepossible. 3HetookashisstartingpointtheworkofAttilaGrandpierreoftheKonkolyObservatoryoftheHungarianAcademyofSciences.In2005,Grandpierreandacollaborator,Gáborágoston,calculatedthatmagneticfieldsinthesun'scorecouldproducesmallinstabilitiesinthesolarplasma.Theseinstabilitieswouldinducelocalisedoscillationsintemperature. 4Ehrlich'smodelshowsthatwhilstmostoftheseoscillationscanceleachotherout,somereinforceoneanotherandbecomelong-livedtemperaturevariations.Thefavouredfrequenciesallowthesun'scoretemperaturetooscillatearounditsaveragetemperatureof13.6millionkelvinincycleslastingeither100,000or41,000years.Ehrlichsaysthatrandominteractionswithinthesun'smagneticfieldcouldflipthefluctuationsfromonecyclelengthtotheother. 5ThesetwotimescalesareinstantlyrecognisabletoanyonefamiliarwithEarth'siceages:forthepastmillionyears,iceageshaveoccurredroughlyevery100,000years.Beforethat,theyoccurredroughlyevery41,000years. 6MostscientistsbelievethattheiceagesaretheresultofsubtlechangesinEarth'sorbit,knownastheMilankovitchcycles.OnesuchcycledescribesthewayEarth'sorbitgraduallychangesshapefromacircletoaslightellipseandbackagainroughlyevery100,000years.ThetheorysaysthisalterstheamountofsolarradiationthatEarthreceives,triggeringtheiceages.However,apersistentproblemwiththistheoryhasbeenitsinabilitytoexplainwhytheiceageschangedfrequencyamillionyearsago. 7"InMilankovitch,thereiscertainlynogoodideawhythefrequencyshouldchangefromonetoanother,"saysNeilEdwards,aclimatologistattheOpenUniversityinMiltonKeynes,UK.NoristhetransitionproblemtheonlyonetheMilankovitchtheoryfaces.EhrlichandothercriticsclaimthatthetemperaturevariationscausedbyMilankovitchcyclesaresimplynotbigenoughtodriveiceages. 8However,EdwardsbelievesthesmallchangesinsolarheatingproducedbyMilankovitchcyclesarethenamplifiedbyfeedbackmechanismsonEarth.Forexample,ifseaicebeginstoformbecauseofaslightcooling,carbondioxidethatwouldotherwisehavefounditswayintotheatmosphereaspartofthecarboncycleislockedintotheice.ThatweakensthegreenhouseeffectandEarthgrowsevencolder. 9AccordingtoEdwards,thereisnolackofsuchmechanisms."Ifyouaddtheireffectstogether,thereismorethanenoughfeedbacktomakeMilankovitchwork,"hesays."Theproblemnowisidentifyingwhichmechanismsareatwork."ThisiswhyscientistslikeEdwardsarenotyetreadytogiveuponthecurrenttheory."Milankovitchcyclesgiveusiceagesroughlywhenweobservethemtohappen.Wecancalculatewhereweareinthecycleandcompareitwithobservation,"hesays."Ican'tseeanywayoftesting[Ehrlich's]ideatoseewhereweareinthetemperatureoscillation." 10Ehrlichconcedesthis."Ifthereisawaytotestthistheoryonthesun,Ican'tthinkofonethatispractical,"hesays.That'sbecausevariationover41,000to100,000yearsistoogradualtobeobserved.However,theremaybeawaytotestitinotherstars:reddwarfs.Theircoresaremuchsmallerthanthatofthesun,andsoEhrlichbelievesthattheoscillationperiodscouldbeshortenoughtobeobserved.Hehasyettocalculatethepreciseperiodortheextentofvariationinbrightnesstobeexpected. 11NigelWeiss,asolarphysicistattheUniversityofCambridge,isfarfromconvinced.HedescribesEhrlich'sclaimsas"utterlyimplausible".EhrlichcountersthatWeiss'sopinionisbasedonthestandardsolarmodel,whichfailstotakeintoaccountthemagneticinstabilitiesthatcausethetemperaturefluctuations. Questions1-4 CompleteeachofthefollowingstatementswithOneorTwonamesofthescientistsfromtheboxbelow. WritetheappropriatelettersA-Einboxes1-4onyouranswersheet. A.AttilaGrandpierre B.Gáborágoston C.NeilEdwards D.NigelWeiss E.RobertEhrlich 1....claimsthereadimmerswitchinsidethesunthatcausesitsbrightnesstoriseandfallinperiodsaslongasthosebetweeniceagesonEarth. 2....calculatedthattheinternalsolarmagneticfieldscouldproduceinstabilitiesinthesolarplasma. 3....holdsthatMilankovitchcyclescaninducechangesinsolarheatingonEarthandthechangesareamplifiedonEarth. 4....doesn'tbelieveinEhrlich'sviewpointsatall. Questions5-9 Dothefollowingstatementsagreewiththeinformationgiveninthereadingpassage? Inboxes5-9onyouranswersheetwrite TRUEifthestatementistrueaccordingtothepassage FALSEifthestatementisfalseaccordingtothepassage NOTGIVENiftheinformationisnotgiveninthepassage 5.Theiceageschangedfrequencyfrom100,000to41,000yearsamillionyearsago. 6.ThesoleproblemthattheMilankovitchtheorycannotsolveistoexplainwhytheiceagefrequencyshouldshiftfromonetoanother. 7.Carbondioxidecanbelockedartificiallyintoseaicetoeliminatethegreenhouseeffect. 8.SomescientistsarenotreadytogiveuptheMilankovitchtheorythoughtheyhaven'tfiguredoutwhichmechanismsamplifythechangesinsolarheating. 9.BothEdwardsandEhrlichbelievethatthereisnopracticalwaytotestwhenthesolartemperatureoscillationbeginsandwhenends. Questions10-14 Completethenotesbelow. ChooseonesuitablewordfromtheReadingPassageaboveforeachanswer. Writeyouranswersinboxes10-14onyouranswersheet. Thestandardviewassumesthattheopposingpressuresofgravityandnuclearfusionsholdthetemperature...10...inthesun'sinterior,buttheslightchangesintheearth's...11...alterthetemperatureontheearthandcauseiceagesevery100,000years.ABritishscientist,however,challengesthisviewbyclaimingthattheinternalsolarmagnetic...12...caninducethetemperatureoscillationsinthesun'sinterior.Thesun'scoretemperatureoscillatesarounditsaveragetemperaturein...13...lastingeither100,000or41,000years.Andthe...14...interactionswithinthesun'smagneticfieldcouldflipthefluctuationsfromonecyclelengthtotheother,whichexplainswhytheiceageschangedfrequencyamillionyearsago.
Coca-Colafoundthatemployeeswhoparticipatedinwellnessandexerciseprogramsusedfewersickdaysandtendedtobemoreproductiveontheirjobs.
孩子普遍容易受到电视电影中不良内容的影响。
Peoplethrowthingsawayandbuynewonesinsteadofrepairingthemandusingagain.Whatdoyouthinkmaybethereasonsforthis?Whatproblemsmightthiscauseinsociety?
题目：ResourcePlanningManager:AssessmentofSuitabilityforHome-basedWorking
Californiaisalandofvarietyandcontrast.Almosteverytypeofphysicallandfeature，sortofarcticicefieldsandtropicaljunglescanbefoundwithinitsborders.Sharplycontrastingtypesoflandoftenlieveryclosetooneanother.PeoplelivinginBakersfield，forinstance，canvisitthePacificOceanandthecoastalplain，thefertileSanJoaquinValley，thearidMojaveDesert，andthehighSierraNevada，allwithinaradiusofabout100miles.Inotherareasitispossibletogosnowskiinginthemorningandsurfingintheeveningofthesameday，withouthavingtotravellongdistance.ContrastaboundsinCalifornia.ThehighestpointintheUnitedStates(outsideAlaska)isinCalifornia，andsoisthelowestpoint(includingAlaska)。MountWhitney，14，494feetabovesealevel，isseparatedfromDeathValley，282feetbelowsealevel，byadistanceofonly100miles.Thetwoareashaveadifferenceinaltitudeofalmostthreemiles.Californiahasdeep，clearmountainlakeslikeLakeTahoe，thedeepestinthecountry，butitalsohasshallow，saltydesertlakes.IthasLakeTulainyo，12，020feetabovesealevel，andthelowestlakeinthecountry，theSaltonSea，236feetbelowsealevel.Someofitslakes，likeOwensLakeinDeathValley，arenotlakesatall：theyaredrieduplakebeds.Inadditiontomountains，lakes，valleys，deserts，andplateaus，CaliforniahasitsPacificcoastline，stretchinglongerthanthecoastlinesofOregonandWashingtoncombined. 1.WhichofthefollowingisthelowestpointintheUnitedStates? A.LakeTulainyoB.MojavedesertC.DeathValleyD.TheSaltonSea 2.WhereisthehighestpointintheUnitedStateslocated? A.LakeTahoe. B.SierraNevada.C.MountWhitney. D.Alaska. 3.HowfarawayisDeathValleyfromMountWhitney? A.About3miles. D.14，494feet. 4.WhichofthefollowingisNOTmentionedinthepassageasbeingwithinaradiusofabout100milesofBakersfield? A.ThePacificOcean. B.SanJoaquinValley. C.MojaveDesert. D.OregonandWashington. 5.WhichstatementbestdemonstratesthatCaliforniaisalandofvarietyandcontrast? A.ThehighestlakeinCaliforniaisLakeTulainyo. B.ItispossibletogosurfingandsnowskiinginsomepartsofCaliforniawithouthavingtotravellongdistance. C.SierraNevada，SanJoaquinValley，MojaveDesertandthePacificOceanallliewithinaradiusofabout100miles. D.OwensLake，inDeathValley，isnotreallyalakeatall.
Nowadaysitismoreconvenientandeasierforpeopletotraveltoothercountries.Doyouthinkthepositiveeffectsexceedthenegativeeffects?
TEXTB Whatweknowofprenataldevelopmentmakesallthisattemptmadebyamothertomoldthecharacterofherunbornchildbystudyingpoetry,art,ormathematicsduringpregnancyseemutterlyimpossible.Howcould suchextremelycomplexinfluencespassfromthemothertothechild?Thereisnoconnectionbetweentheirnervoussystems.Eventhebloodvesselsofmotherandchilddonotjoindirectly.Anemotionalshocktothemotherwillaffectherchild,becauseitchangestheactivityofherglandsandsothechemistryherblood.Anychemicalchangeinthemother'sbloodwillaffectthechildforbetterorworse.Butwecannotseehowalooking formathematicsorpoeticgeniuscanbedissolvedinbloodandproduceasimilarlikingorgeniusinthechild. Inourdiscussionofinstinctswesawthattherewasreasontobelievethatwhateverweinheritmustbeof someverysimplesortratherthananycomplicatedorverydefinitekindofbehavior.Itiscertainthatnoone inheritsaknowledgeofmathematics.Itmaybe,however,thatchildreninheritmoreorlessofarathergeneral abilitythatwemaycallintelligence.Ifveryintelligentchildrenbecomedeeplyinterestedinmathematics,they willprobablymakeasuccessofthatstudy. Asformusicalability,itmaybethatwhatisinheritedisanespeciallysensitiveear,apeculiarstructureofthe handsorthevocalorgansconnectionsbetweennervesandmusclesthatmakeitcomparativelyeasytolearnthe movementsamusicianmustexecute,andparticularlyvigorousemotions.Ifthesefactorsareallorganized aroundmusic,thechildmaybecomeamusician.Thesamefactors,inothercircumstancemightbeorganized aboutsomeothercenterofinterest.Therichemotionalequipmentmightfindexpressioninpoetry.Thecapable fingersmightdevelopskillinsurgery.Itisnottheknowledgeofmusicthatisinherited,thennoreventheloveof it,butacertainbodilystructurethatmakesitcomparativelyeasytoacquiremusicalknowledgeandskill. Whetherthatabilityshallbedirectedtowardmusicorsomeotherundertakingmaybedecidedentirelybyforces intheenvironmentinwhichachildgrowsup. 6.Whichofthefollowingstatementsisnottrue? A.Somemotherstrytoinfluencetheirunbornchildrenbystudyingartandothersubjectsduringtheir pregnancy. B.Itisutterlyimpossibleforustolearnanythingaboutprenataldevelopment. C.Thebloodvesselsofmotherandchilddonotjoindirectly. D.Therearenoconnectionbetweenmother'snervoussystemsandherunbornchild's. 7.Amotherwillaffectherunbornbabyontheconditionthat____. A.sheisemotionallyshocked B.shehasagoodknowledgeofinheritance C.shetakespartinallkindofactivities D.shestickstostudying 8.Accordingtothepassage,achildmayinherit____. A.everythingfromhismotherB.aknowledgeofmathematics C.arathergeneralabilitythatwecallintelligence D.hermother'smusicalability 9.Ifachildinheritssomethingfromhismother,suchasanespeciallysensitiveear,apeculiarstructureofthe handsorofthevocalorgans,hewill____. A.surelybecomemusician B.mostlybecomeapoet C.possiblybecomeateacher D.becomeamusicianontheconditionthatallthesefactorsareorganizedaroundmusic 10.Whichofthefollowingisthebesttitleforthepassage? A.RoleofInheritance. B.AnUnbornChild. C.Functionofinstincts. D.InheritedTalents.
Themajorityofsuccessfulseniormanagersdonotcloselyfollowtheclassicalrationalmodeloffirstclarifyinggoals,assessingtheproblem,formulatingoptions,estimatinglikelihoodsofsuccess,makingadecision,andonlythentakingactiontoimplementthedecision.Rather,intheirday-by-daytacticalmaneuvers,theseseniorexecutivesrelyonwhatisvaguelytermedintuitiontomanageanetworkofinterrelatedproblemsthatrequirethemtodealwithambiguity,inconsistency,novelty,andsurprise;andtointegrateactionintotheprocessofthinking.Generationsofwritersonmanagementhaverecognizedthatsomepracticingmanagersrelyheavilyonintuition.Ingeneral,however,suchwritersdisplayapoorgraspofwhatintuitionis.Someseeitastheoppositeofrationality;othersviewitasanexcuseforcapriciousness.Isenberg'srecentresearchonthecognitiveprocessesofseniormanagersrevealsthatmanagers'intuitionisneitherofthese.Rather,seniormanagersuseintuitioninatleastfivedistinctways.First,theyintuitivelysensewhenaproblemexists.Second,managersrelyonintuitiontoperformwell-learnedbehaviorpatternsrapidly.Thisintuitionisnotarbitraryorirrational,butisbasedonyearsofpainstakingpracticeandhands-onexperiencethatbuildskills.Athirdfunctionofintuitionistosynthesizeisolatedbitsmofdataandpracticeintoanintegratedpicture,ofteninanAha!experience.Fourth,somemanagersuseintuitionasacheckontheresultsofmorerationalanalysis.Mostseniorexecutivesarefamiliarwiththeformaldecisionanalysismodelsandtools,andthosewhousesuchsystematicmethodsforreachingdecisionsareoccasionallyleeryofsolutionssuggestedbythesemethodswhichruncountertotheirsenseofthecorrectcourseofaction.Finally,managerscanuseintuitiontobypassin-depthanalysisandmoverapidlytoengenderaplausiblesolution.Usedinthisway,intuitionisanalmostinstantaneouscognitiveprocessinwhichamanagerrecognizesfamiliarpatterns.Oneoftheimplicationsoftheintuitivestyleofexecutivemanagementisthatthinkingisinseparablefromacting.Sincemanagersoftenknowwhatisrightbeforetheycananalyzeandexplainit,theyfrequentlyactfirstandexplainlater.Analysisisinextricablytiedtoactioninthinking/actingcycles,inwhichmanagersdevelopthoughtsabouttheircompaniesandorganizationsnotbyanalyzingaproblematicsituationandthenacting,butbyactingandanalyzingincloseconcert.Giventhegreatuncertaintyofmanyofthemanagementissuesthattheyface,seniormanagersofteninstigateacourseofactionsimplytolearnmoreaboutanissue.Theythenusetheresultsoftheactiontodevelopamorecompleteunderstandingoftheissue.Oneimplicationofthinking/actingcyclesisthatactionisoftenpartofdefiningtheproblem,notjustofimplementingthesolution. 1.Accordingtothetext,seniormanagersuseintuitioninallofthefollowingwaysEXCEPTto [A]Speedupofthecreationofasolutiontoaproblem. [B]Identifyaproblem. [C]Bringtogetherdisparatefacts. [D]Stipulatecleargoals. 2.Thetextsuggestswhichofthefollowingaboutthewritersonmanagementmentionedinline1,paragraph2 [A]Theyhavecriticizedmanagersfornotfollowingtheclassicalrationalmodelofdecisionanalysis. [B]Theyhavenotbasedtheiranalysesonasufficientlylargesampleofactualmanagers. [C]Theyhavereliedindrawingtheirconclusionsonwhatmanagerssayratherthanonwhatmanagersdo. [D]Theyhavemisunderstoodhowmanagersuseintuitioninmakingbusinessdecisions. 3.ItcanbeinferredfromthetextthatwhichofthefollowingwouldmostprobablybeonemajordifferenceinbehaviorbetweenManagerX,whousesintuitiontoreachdecisions,andManagerY,whousesonlyformaldecisionanalysis [A]ManagerXanalyzesfirstandthenacts;ManagerYdoesnot. [B]ManagerXcheckspossiblesolutionstoaproblembysystematicanalysis;ManagerYdoesnot. [C]ManagerXtakesactioninordertoarriveatthesolutiontoaproblem;ManagerYdoesnot. [D]ManagerYdrawsonyearsofhands-onexperienceincreatingasolutiontoaproblem;ManagerXdoesnot. 4.Thetextprovidessupportforwhichofthefollowingstatements [A]Managerswhorelyonintuitionaremoresuccessfulthanthosewhorelyonformaldecisionanalysis. [B]Managerscannotjustifytheirintuitivedecisions. [C]Managers''intuitionworkscontrarytotheirrationalandanalyticalskills. [D]Intuitionenablesmanagerstoemploytheirpracticalexperiencemoreefficiently. 5.Whichofthefollowingbestdescribestheorganizationofthefirstparagraphofthetext [A]Anassertionismadeandaspecificsupportingexampleisgiven. [B]Aconventionalmodelisdismissedandanalternativeintroduced. [C]Theresultsofrecentresearchareintroducedandsummarized. [D]Twoopposingpointsofviewarepresentedandevaluated.