相关Doyouknowhowitiswhen的文学知识

问题详情：   Doyouknowhowitiswhenyouseesomeoneyawnandyoustartyawningtoo?Orhowharditistobeamongpeoplelaughingandnotlaughyourself?Well,apparentlyit'sbecausewehavemirrorneurons(神经元）inourbrains.   ...