Overthelast70years,researchershavebeenstudyinghappyandu...
問題詳情：Overthelast70years,researchershavebeenstudyinghappyandunhappypeopleandfinallyfoundouttenfactorsthatmakeadifference.Ourfeelingsofwell-beingatanymomentaredeterminedtoacertaindegreebygenes.Howeve...