職稱英語衛(wèi)生類A級(jí)試題職稱英語：衛(wèi)生類A級(jí)試題Agingdoesnotmeanadramaticdeclineinmemorypower,unlessyouhelpithappenbylettingyourmindgo.That'snottosaythatmemorydoesn'tchangethroughoutlife.Researchersdividememoryintocategoriesbasedonthelengthoftimewhenmemoriesarestored.Onesystemdividesitupasshort-term(lessthanoneminute;rememberingatelephonenumberwhileyoudial,forinstance),long-term(overaperiodofyears)andverylong-termmemory(overalifetime).Short-termmemoryisn'tmastereduntilaboutage7,butafterthatyounever10seit.Long-termmemory,however,involvesmoreeffortandskillandchangesmorethroughlife.It'snotuntiltheearlyteens(十幾歲)thatmostpeopledevelopamaturelong-termmemory.First,wemustgetinformationintoourheadsthroughlearning.Learningstrategiescangetrusty(生銹)withoutconstantuse.Highschoolandcollegestudents,whoareforcedtorepeatedlyexercisetheirlong-termmemoryabilities（atleastlong-termenoughtogetthemthroughafinalexam）,usuallydowellonmemorytests.Thelongeryoustayinschool,themorechanceyougettopolishyourlearningskills.It'snowonderthatmorehighlyeducatedpeoplehavemoreeffectivememoryskillsthroughoutlife.Althougholderpeopleingenerallearnsomewhatmoreslowlythantheydidwhenyounger,adramaticdifferenceexistsbetweenthosewhostayin___ectuallyactivemreading,discussing,takingclasses,thinking——andthosewhodonot.Givingthebraindailyworkout（鍛煉）isjustasimportantasexercisingyourmuscles.Brainworkkeepsyourlearningstrategiesinshape,andthishelpsyourmemorytofunctionatfullcapacity.Thenextpartofahealthylong-termmemoryisretention（記憶力）,theabilitytostorewhatyouhavelearned.Memoryresearchersstilldonotknowwhethermemoriesarelostwhethertheystillexistinthebrainbutourmentalsearchingcannotturnthemup,orhavedisappearedentirelyasourbrainages.memoriesarelostThethirdnecessityformemoryisrecall,theabilitytobringtomindthememorieswehavestored.Again,whileaginghaswidelydifferenteffectsontherecallabilitiesofdifferentpeople,researchindicatesthattheolderweget,thelongerittakestorecallfactsButslowerrecallisstillrecall,infact,agingdoesnotseemtohaveanyeffectonforgettingatall,whichtakesplaceatthesamerateinyoungerandolderpeople.Paragraph3.Paragraph4Paragraph5Paragraph6AImportanceofstayingin___ectuallyactiveBEffectsofagi