Happinessiscontagious,researchersreportedonThursday.Peo...
问题详情:Happinessiscontagious,researchersreportedonThursday.Peoplewiththemostsocialconnections—spouses,friends,neighboursandrelatives—werealsothehappiest,thedatashowed.“Eachadditionalhappypersonmak...