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一、Haveyoueverheardpeoplesaythattheytendtobemoreofaright-brainorleft-brainthinkers?Frombookstotelevisionprograms,youhaveprobablyheardthetermmentionednumeroustimes,orperhapsyouhaveeventakenanonlinetesttodeterminewhichtypebestdescribesyou.Dodifferentpartsofthebrainreallycontroldifferentbodilyandmentalfunctions?Overtheyears,atheorythathasgainedinpopularityisthattherightbrainandtheleftbrainareresponsiblefordifferentmodesofthoughtandthatthewayinwhichsideofhisbrainworksmoreactively.Peoplewhorelymoreheavilyontherighthalfoftheirbraintendtobemoreimaginativeandspontaneous.Theyareinterestedinpatterns,shapesandsizes,fortherightisassociatedwithartisticabilitylikesinging,painting,writingpoetry,ect.Left-braindominatedpeoplearequiteoppositeinthewaytheythink.Theytendtobemorelogicalandanalyticalintheirthinkingandusuallystandoutinmathematicsandwordskills.Whilethedifferentfunctionsofthetwobrainpartsmayhavebeendistortedandexaggeratedbypopularpsychology,understandingyourstrengthsandweaknessesincertainareascanhelpyoudevelopbetterwaystolearnandstudy.Forexample,ifyouareusuallystumpedintryingtofollowverbalinstructions,anactivityoftencitedasaright-braincharacteristic,youcanbenefitfromwritingdowndirectionsanddevelopingbetterorganizationskills.二、Iwasonceinarelationshipwithawomanwhowasthemostbrilliant,creativeanddrivenpersonI’deverknown.Itoldherthesethingsoftenbecauseshedidn’tseeherselfthisway,despiteachievinggreatsuccessandacclaiminherprofessionalfield.Shewasalsogorgeousandsexy,thoughsheseemednottorealizethiseither,soItoldherthesethingstoo.ButwhileIthoughtitwasmoreimportanttopraiseherbrilliance,itseemedtomeanmoretoherthatshewasconsideredattractive.Myexperiencewiththisgirlfriendexemplifiesacommonphenomenoninlife-whenitcomeTocomplimentingawoman,menoftenwalkaverydifficultline.Ofcourse,contextmatters.Inaprofessionalsetting,talkingaboutappearanceisofteninappropriate,butatasinglesclub,,itmaybeimportant.Shewillbeverypleasedifamanthinksherclothesandaccessoriesarepretty,orherhairlookswonderful.However,thingsinbetweenthesetwocasesareunclear.Womenhaveeveryrighttoberecognizedandappreciatedfortheirintelligenceandcreativity.Butatthesametime,theywanttobeadmiredfortheirlooksaswell,forexample,theirperfectskincomplexionandelegantoutfits.Unfortunately,mostguysdon’tunderstandthis.Ifwereceivecomplimentsfromwomen,they’reusuallyaboutourachievements,notourlooks.Mostofusdon’texpectawomantotellushowhandsomeorsexyweare,andsomeofuswouldfindithardtoregardsuchacommentassincere.I’mnotsayingit’sveryhardtobeaguythesedays.Itisimportantforeverymantounderstandhowtotreatwomenwithbothrespectandadmiration.butasfarastherightbalanceofthesetwoisconcerned,wereallyhavenoframeofreference,especiallywhenitcomestolooks.三、Insomeurbancenters,workaholism(工作狂)issocommonthatpeopledonotconsideritunusual:Theyacceptthelifestyleasnormal.GovernmentworkersinWashingtonD.C.,forexample,frequentlywork60to70hoursaweek.Theydon’tdothisbecausetheyhavetodo;theydoitbecausetheywantto.Workaholismcanbeaseriousproblem.Trueworkaholics,beingdeeplyimmersedintheirwork,allowthemselveslittleornotimetotakebreaks.Theyliketoworkwithoutbeingdisrupted,andtheyprobablydon’tknowhowtorelax.Butisworkaholismalwaysbad?Perhapsnot.Therearepeoplewhoworkwellunderstress.Besides,somestudiesshowthatmanyworkaholicshavegreatenergyandinterestintheirownsphere.Theirworkissopleasurablethattheyareactuallyveryhappy.Formostworkaholics,workandentertainmentarethesamething.Theirworkchangesthem,keepingthembusyandgenuinelyengaged.Whydoworkaholicsenjoydoingtheirjobsomuch?Ofcoursetheygetpaychecksfromit,butitishardtoquantifythepleasurewithmoney.Itoffersmorethanfinancialsecurity.Psychologistsclaimthatworkgivespeopleanidentityandprovidesthemwithself-confidence.Peoplehaveafeelingofsatisfactionwhentheyadministrateabusinesswellorcompleteachallengingpieceofwork.Inaddition,mostjobsprovideasociallyacceptablewayforpeopletomeetothers.So,thoughsomepeoplearecompulsiveabouttheirwork,theiraddictionseemstobeasafeorevenanadvantageousone.Theyfeelemptyandincompletewhentheyareinvolvesinactivitiesnotrelatedtowork.四、Farminginvariablyinterfereswiththehabitatsofplantsandanimals.However,thisdoesnotnecessarilymeanthatagricultureandbiodiversityareincompatible.infact,quitetheoppositeistrue.Thesustainablecultivationofplantsforfoodandfeedactuallyenablesustopreservebiodiversity.By2007,thereweremorethantwiceasmanypeoplelivingontheplanetastherewerein1961.overthesameperiod,thetotalamountofavailablearablelandgrewbyjust10percent.Incomparisonwithpopulationgrowth,theexpansionofarablelandwassmall.Andtherearelimitstofurtherexpansion.Alargeproportionoftheearth’ssurface-likedeserts-isnotsuitableforcultivation,andotherareasareutilizedbyhumansforroadsandbuildings.Somelandthatisrichinbiodiversityneedstobepreservedandthusshouldnotbeconvertedintoarableland.Thetropicalrainforests,forexample,havethehighestspeciesdensityintheworld,andchangingthislandforcropcultivationwouldbedreadfultothesespecies’shabitatsand,indeed,existence.By2050,globaldemandforfoodwillhaverisenby70percent.Buttheexpansionofland