题目内容：
Questionsarebasedonthefollowingpassage: Itisdifficulttoimaginewhathfewouldbelikewithoutmemory．Themeaningsofthousandsofeverydayperceptions,thebasesforthedecisionswemake,andtherootsofourhabitsandskillsaretobefoundinourpastexperiences,whicharebroughtintothepresentbymemory.
Memorycanbedefinedasthecapacitytokeepinformationavailableforlateruse．Itincludesnotonly"remembering"thingslikearithmeticorhistoricalfacts,butalsoinvolvinganychangeinthewayananimaltypicallybehaves．Memoryisinvolvedwhenaratgivesupeatinggrainbecausehehassniffedsomethingsuspiciousinthegrainpile．Memoryisalsoinvolvedwhenasix-year-oldchildlearnstoswingabaseballbat.
Memoryexistsnotonlyinhumansandanimalsbutalsoinsomephysicalobjectsandmachines.
Computers,forexample,containdevicesforstoringdataforlateruse．Itisinterestingtocomparethememory-storagecapacityofacomputerwiththatofahumanbeing．Theinstant-accessmemoryofalargecomputermayholdupto100,000"words"wreadyforinstantuse．AnaverageU．S.
teenagerprobablyrecognizesthemeaningofabout100,000wordsofEnglish．However,thisisbutafractionofthetotalamountofinformationwhichtheteenagerhasstored．Consider,forexample,thenumberoffacesandplacesthattheteenagercanrecognizeonsight.
Theuseofwordsisthebasisoftheadvancedproblem-solvingintelligenceofhumanbeings．Alargepartofaperson'smemoryisintermsofwordsandcombinationsofwords.
Accordingtothepassage,memoryisconsideredtobe_________. A．thebasisfordecisionmakingandproblemsolving
B．anabilitytostoreexperiencesforfutureuse
C．anintelligencetypicallypossessedbyhumanbeings
D．thedatamainlyconsistingofwordsandcombinationsofwords
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答案解析：