【英语单选30-32题号:30题型:单选题本题分数:2.00内容:Researchershaveestablishedthatwhenpeoplearementallyengaged,biochemicalchangesoccurinthebrainthatallowittoactmoreeffectivelyincognitive(认知的)areassuchas】

　　英语单选30-32

　　题号:30题型:单选题本题分数:2.00

　　内容:

　　Researchershaveestablishedthatwhenpeoplearementallyengaged,biochemicalchangesoccurinthebrainthatallowittoactmoreeffectivelyincognitive(认知的)areassuchasattentionandmemory.Thisistrueregardlessofage.Peoplewillbealert(警觉的)andreceptive(愿意接受的)iftheyarefacedwithinformationthatgetsthemtothinkaboutthingstheyareinterestedin.Andsomeonewithahistoryofdoingmoreratherthanlesswillgointooldagemorecognitivelysoundthansomeonewhohasnothadanactivemind.Manyexpertsaresoconvincedofthebenefitsofchallengingthebrainthattheyareputtingthetheorytoworkintheirownlives.“Theideaisnotnecessarilytolearntomemorizeenormousamountsofinformation,”saysJamesFozard,associatedirectoroftheNationalInstituteonaging.“Mostofusdon’tneedthatkindofskill.Suchspecifictrainingisoflessinterestthanbeingabletomaintainmentalalertness.”Foardandotherssaytheychallengetheirbrainswithdifferentmentalskills,bothbecausetheyenjoythemandbecausetheyaresurethattheirrangeofactivitieswillhelpthewaytheirbrainswork.GeneCohen,actingdirectorofthesameinstitute,suggeststhatpeopleintheiroldageshouldengageinmentalandphysicalactivitiesindividuallyaswellasingroups.Cohensaysthatwearefrequentlyadvisedtokeepphysicallyactiveasweage,butolderpeopleneedtokeepmentallyactiveaswell.Thosewhodoaremorelikelytomaintaintheirintellectualabilitiesandtobegenerallyhappierandbetteradjusted.“Thepointis,youneedtodoboth,”Cohensays,“Intellectualactivityactuallyinfluencesbrain-cellhealthandsize.”Peoplewhoarecognitivelyhealthyarethose____.

　　选项:

　　a、whocanrememberlargeamountsofinformation

　　b、whoarehighlyintelligent

　　c、whosemindsarealertandreceptive

　　d、whoaregoodatrecognizingdifferentsounds

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　　题号:31题型:单选题本题分数:2.00

　　内容:

　　ThefindingsofJamesandotherscientistsintheirwork____

　　选项:

　　a、remainatheorytobefurtherproved

　　b、havebeenchallengedbymanyoth