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- 问题详情：Whenmostpeopletalkofaclassroom,theythinkofolderpeopleteachingyoungerones.Butwhenitcomestolearningabouthigh-technologydevices,theoppositecanoftenbetrue.ThatiswhatishappeningthroughaprogramintheeasternAmericancityofColumbia,Maryland.The50PlusCe...
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