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HowtoUseOurBrain
1.人脑的重要性及作用。
2.如何科学用脑。
[写作导航]先写大脑的特性和作用(复杂、智能的器官,使人区别于动物等);再写大脑越用越灵,但过度使用也会出问题,为第三段作铺垫;第三段从两方面说明如何合理用脑:一是劳逸结合,手脑交替;二是从科学的角度,利用数据,说明过度用脑可能给大脑带来的伤害。
[范文]
Humanbrainisthemostcomplexandintelligentmechanismintheworld.Itisthemajorfactorthatdistinguishesmanfromanimals.Withourbrainwegettoknowtheworldandmakeagooduseoftheworldtoourbenefit.
Ourbrainisaproductofconstantusethroughmillionsofyears.Otherthingscanbeusedup,butusedproperly,ourbraincanneverbeexhausted.Infact,themoreweuseit,themorecapableandefficientitwillbecome.Excessiveuseofthebrain,however,willcausealotofproblems.Soitisusefultoknowhowtouseourbrainwisely.
First,handworkorphysicallaborisgoodexerciseaswellasrestforourbrain.Doinghandworkandbrainworkalternativelycanhelpdevelopbothourbrainandhands.Secondly,weshouldavoiddoingbrainworkforlonghoursonend.Thebrain,though3%ofthebodyweight,whenatwork,consumes20%oftheoxygencarriedby16%ofthebloodincirculation.Alongperiodofbrainworkmaycause,throughlackofbodilyactivity,slowbloodcirculationandinadequateoxygensupplytothebrain,resultingininefficiencyandpossibledamagetothebrain.