AccordingtoGermanresearchers,forcingpeopletobehappyandp...
問題詳情：AccordingtoGermanresearchers,forcingpeopletobehappyandpoliteallthetimeislikelytomakethemsick.Theybelievemostatriskareairhostesses,callcenteroperators,waitersandotherworkersinclosecontactwithth...