【这个英语文章的总结要怎么写250左右】
这个英语文章的总结要怎么写250左右
【这个英语文章的总结要怎么写250左右】
这个英语文章的总结要怎么写250左右
Arecentstudyshowsthatdirtmaybegoodforbrainandmakechildrensmarterbecauseitisa
naturalanti-anxietydrugwithoutside-effects.Dr.DorothyMatthews,anassociateprofessorofbiologyatTheSageCollegesinTroy,N.Y.,conductedtheexperiment.Sheandhercolleaguestestedhowlongthemicetooktonavigateamaze.Theresultisthatthebacteria-exposedmicerantwiceasfastasthecontrols.Theirexplanationislikethis:Serotoninplaysabigroleinmodulatingmood,decreasinganxiety.Ifoneisnervousorfrightened,hecan’tthinkstraight.Soserotoninisofsignificanceforlearning.Intheexperiment,thebacteria-exposedmiceshowedfeweranxietybehaviorsthanthenon-exposedones.Inanotherexperiment,theresearchersremovedthebacteriafromthefoodprovidedfortheexposedmiceandfoundthatthoseexposedmicewerestillfasterthanthecontrols.Therefore,theycametoaconclusionthattheeffectistemporary.(字数:155,实际已经说清楚了.)