OneofthegreatestcontributionsofFreudisthatheelaboratedthestructureofhumanpsycheas"Id","Ego"and"Superego"."Ego"isthenaturalhumanpsychologicalcharacteristicthatchangeseverythinginitswayandmakeseveryoneavictimtoundesirableconsequencesintheirlife.Theprideandself-esteemiftheyareoverratedinourmindwillbeshownintheformofEgo.TheHumanEgoconcealsour"naturalintellect"tocreatefalseownershipovereveryobject.Hereisaninterestingstorywhichcouldillustratethecase. Oncetherewasascientistwhoworkedhardallthroughhislifetomakeexacthumanphysicalbodyreplicasofhimself.Hemasteredtheartsoperfectlythatonecouldnoteasilytellthereplicafromtheoriginal.Accordingtothenaturalprocess,theAngelDeathknockedathisdoor.TheAngelDeathfeltpuzzledbylookingatthethirteensamepersons.Obviouslyunabletorecognizetheoriginalperson,theAngelreturnedinvain.Thescientistgottheillusionthathecanavoiddeatheasily. NeverthelesstheAngelDeathwhohasclearunderstandingofhumanlifedidnotgiveupandcamebackwithatrickSheagainapproachedthescientistandwasstaringatthethirteenhumanfigures. Thenshetoldthescientist,"Youhavemanagedeverythingcorrectlybutyoucouldnotavoidasmallflawwhilereproducingyourself′.Thescientisthurriedlyspokeoutthesmallflawthatitwasimpossibleinhiswork.ThenhewascaughtbyAngelDeath. TheEgoblindsustohidereality,sowetendtomakesmallmistakesthoughwearegivengreaterskillsandstrength.Thereforeeachoneofushastobecarefulaboutouraccomplishmentsandachievementssothatwedon′tmakeusblindtowardthislivingworldwhereeveryindividualispresenteduponwithequalgraceandstrength.Thuswehavetodecreasethefeelingof"AllisI"andincreasethefeelingof"IamnothingbeforeAll",whichmakesusproudofeverythingwehave. Thefirstparagraphservesasa(n)______.
A.explanation B.introduction C.comment D.background正确答案B
