大学英语六级听力模拟试题.docx

大学英语六级听力模拟试题

大学英语六级听力模拟试题2017Itisnevertoolatetolearn.以下是小编为大家搜索整理的大学英语六级听力模拟试题2017，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!Nowlistentothefollowingrecordingandanswerquestions23to2523A.Atthelowerbackofthebrain.B.Atthebottomofthebrain.C.Atthecentralsectionofthebrain.D.Atthetopofthebrain.24A.Controlregulationoftheheartrhythms.B.Controlbasicaspectsofsoundlocalization.C.Controlconsciousthoughtandsensations.D.Controlcomplexvoluntarymotorfunctions.25A.Mostpartsofthebrain.B.Theentirebrain.C.Only10%ofthebrain.D.Asmallfractionofthebrain.Morning,class.TodayI'vebroughtinapictureofthehumanbrain,whichwearegoingtolookatanddiscussindetail.Thebrainislikeourcommandcenterforallourdailyfunctionsandallowsustocopewithourenvironment.Howwecommunicatewithwords,actions,thoughts,andfeelingsareallcenteredinthebrain.Someresearchersbelievethatthebrainissocomplexandmysteriousthatwewillneverbeabletofullyunderstandit.Somehaveevenreferredtoitasalittleblackboxlikethosefoundonaplanethatcontainallthecriticalandhighlyconfidentialinformationoftheflight.It'seasiesttothinkofthebrainasthreeconnectedparts:thecerebrum,brainstem,andcerebellum.(23)Let'sstartoffwiththebrainstem,whichisfoundatthebottomofthebrain.Thebrainstemhasanimportantrolebecauseitcontrolslotsofcriticalfunctionsincludingrespiration,regulationoftheheartrhythms,basicaspectsofsoundlocalization.Next,we'lllookatthesecondlargestpartofthebrain—thecerebellum.Itislocatedatthelowerbackoftheheadandisattachedtothebrainstem.(24)Itismadeupoftwohemispheresanditsfunctionsaretocontrolcomplexvoluntarymotorfunctionssuchaswalking,balanceandposture.Thethirdandlargestpartofourbrainisthecerebrum.Itsassociationsareconsciousthought,movementandsensationssuchastouch,vision,hearing,judgment,reasoning,problemsolving,andemotions.Theaverageweightofanadulthumanbrainisanywherebetween1and1.5kilograms.Somepeoplesaythatweonlyuse10%ofourbrain,butthisisjustamyth.(25)Infact,weuseourentirebrain.Thatbeingsaid,wecanclaimthatmostpeopleonlyuseaverysmallfractionofthecognitivepot