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Investingthousandsofpoundsintherecruitmentandtrainingofeachnewgraduaterecruitmaybejustthebeginning.Choosingthewrongcandidatemayleaveanorganisationpayingforyearstocome.
Fewcompanieswillhaveescapedallofthefollowingfailures:peoplewhopanicatthefirstsightofstress;thosewithlongimpressivequalificationswhoseemincapableoflearning;hypochondriacswhoseabsenteerecordbecomesastonishing;andtheunstablepersonlaterdiscoveredtobeathieforworse.
Lessdramatic,butjustasmuchaproblem,isthepersonwhosimplydoesnotcomeuptoexpectations,whodoesnotquitedeliver;whoneverbecomesahigh-flierorevenasteadyperformer;theemployeewithafinefuturebehindthem.
Thefirstpointtobearinmindattherecruitmentstageisthatpeopledon’tchange.Intelligencelevelsdeclinemodestly,butchangelittleovertheirworkinglife.Thesameistrueofabilities,suchaslearninglanguagesandhandlingnumbers.
Mostpeopleliketothinkthatpersonalitycanchange,particularlythemorenegativefeaturessuchasanxiety,lowesteem,impulsivenessoralackofemotionalwarmth.Butdatacollectedover50yearsgivesaclearmessage:stillstableafteralltheseyears.Extrovertsbecomeslightlylessextroverted;theacutelyshyappearalittlelessso,butthefundamentalsremainmuchthesame.Personalcrisescanaffectthewaywecopewiththings:wemighttakeupordropdrink,drugs,religionorrelaxationtechniques,whichcanbehaveprettydramaticeffects.Skillscanbeimproved,andnewonesintroduced,butatratherdifferentrates.Peoplecanbegroomedforajob.Justaspoliticiansarecarefullyrepackagedthroughdress,hairstyleandspeechspecialists,sopeoplecanbesentontrainingcourses,diplomasorexperimentalweekends.Butthereisacosttoallthiswhichmaybemorethanthepriceofthecourse.Bettertoselectforwhatyouactuallyseeratherthanattempttochangeit.
()1.Thepurposeofthispassageistogivemanagerstheadvicethat.
A.Employersshouldselectcandidatesfortheirpotential.
B.Employersshouldselectcandidatesforwhattheyareratherthanfortheirpotential.
C.Employersshouldselectthenewlygraduatedandsendthemontrainingcourses,diplomasorexperimentalweekends.
D.Employersshouldselectexperiencedcandidatestoavoidspendingthousandsofpoundsintraining.
()2.Accordingtothepassage,whichofthefollowingstatementsistrue?.
A.Absolutely,Peopledon’tchangeduringtheirworkinglives.
B.Generally,peoplechangetoalargeextentduringtheirworkinglives.
C.Fundamentally,peoplestaythesameduringtheirworkinglives.
D.Normally,peopledon’tchangeatallduringtheirworkinglives.
()3.Whatdoesafinefuturebehindthem(line3ofparagraph3)means?.
A.Somepeoplewillcertainlyhaveapromisingfuturethoughtheyarenotverycompetentintheirpresentwork.
B.Somepeopledon’thaveanypotentialfortheirworkthoughtheyareemployed.
C.Somepeoplecanhaveabrightfuturethoughtheycan’tdotheirworkwell.
D.Somepeoplehavepotentialwhentheyareemployed,butneverrealizethatpotential.
()4.Accordingtothepassage,people’sbasicabilitieslikelanguagelearningandnumeracy.
A.changelittleovertheirworkinglife.
B.neverchangeovertheirworkinglife.
C.changefundamentallyovertheirworkinglife.
D.changeprofoundlyovertheirworkinglife.
()5.Theworddeliver(line2ofparagraph3)means.
A.totakegoodstotheplacesorpeopletheyareaddressedto
B.togiveaspeech
C.todowhatyoupromisedtodo
D.tohelpawomantogivebirthtoababy.
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.