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1、T,t王霞第七版英语多功能词典版押题及小抄理工A第一篇务必重点记忆.711.TT,tPrimeronSmell【词源解析】Inadditiontobringingouttheflavoroffood,whatdoesthesenseofsmelldoforus?【相关短语】Smell"givesusinformationaboutplace,aboutwhereweare,"saysRandallReed,aJohnsHopkinsUniversityprofessorwhosespecialtyisthesenseofsmell.Andsmelltellsusaboutpeople."
2、Whetherwerealizeitornot,wecollectalotofinformationaboutwhoisaroundusbasedonsmell,"saysReed.【近义词】Evenatadistance,odorscanwarnusoftrouble-spoiledfood,leakinggas,orfire."It'sagreatalert,"offersDonaldLeopold,adoctoratJohnsHopkins.Forexample,ifsomethingintheovenisburning,everyoneinthehouseknowsit.【反义词
3、】Withjustasimplescent,smellcanalsoevokeveryintenseemotion.Let'ssay,forexample,thatthesmellispurplepetunias.Theseflowershavearichspicinessthatnootherpetuniahas。Nowlet'simaginethatyourmotherdiedwhenyouwerethree,andsheusedtohaveaflowergarden.Youwouldn'tneedtoidentifythesmellortohaveconsciousmemories
4、ofyourmotherorhergarden.Youwouldfeelsadassoonasyousmelledthatspicyodor.【派生词】Comparedwithanimals,howwelldopeopledetectsmelts?Thatdependsonwhatyoumeanby“howwell”.Wearelowonreceptorcells:currentestimatessaythathumanshaveroughlyfivemillionsmell-receptorcells,aboutasmanyasamouse.Arathassome10million,a
5、rabbit20million,andabloodhound100million.【词源解析】Reedsaysthat,acrossspecies,thereisarelativelygoodcorrelationbetweenthenumberofreceptorcellsandhowstrongthesenseofsmellis."Youcanhardlyfindtheolfactorybulbinahumanbrain--it'sapea-sizedobject.Inamouse,it'salittlebigger.It'sbean-sizedinarat.aboutthesize
6、ofyourlittlefingerinarabbit,andthesizeofyourthumbinabloodhound."【派生词Doesthatmeanthatoursenseofsmellisnotveryacute?【反义词】Notexactly.Whilewemaynothavetheolfactoryrangeofothercreatures,thereceptorswedohaveareassensitiveasthoseofanyanimal.Wecanalsothink,andwemakeconscious(andsuccessful)effortstotellth
7、edifferencebetweenonesmellandanother.Atrained"nose",suchasthatofaprofessionalintheperfumebusiness,cannameanddistinguishabout10,000odors.Reedsaysthataperfumeexpertcansniffamodernscentthathasahundreddifferentodorantsinit
