- 问题详情:Happinessiscontagious,researchersreportedonThursday.Peoplewiththemostsocialconnections—spouses,friends,neighboursandrelatives—werealsothehappiest,thedatashowed.“Eachadditionalhappypersonmakesyouhappier,”Christakissaid.“ImaginethatIamconn...
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