【这个英语文章的总结要怎么写250左右】-查字典问答网
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  【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

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2020-01-26 19:27
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姬龙涛

  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.)

2020-01-26 19:30:18

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