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1、七 必修第二册Unit1Foodforthought(限时35分钟)Ⅰ.阅读理解A(2021·福建模拟)Researcherscontinuetoshowthepowerbehindoursenseofsmell.Recentstudieshavefound,amongotherthings,thatthesmelloffoodslikepizzacancauseuncontrollableangerindriversonroads.Thereviewexplainsthatsmellisuniqueinitseffectsonthebra
2、in.AccordingtoConradKing,“thesenseofsmellgoesthroughthelogicalpartofthebrainandactsonthesystemsconcernedwithfeelings.Thisiswhythesmellofbakingbreadcandestroythebestintentionsofadieter.”Smell,whichdictates(决定)theunbelievablecomplexityoffoodtastes,hasalwaysbeentheleastunders
3、toodofoursenses.Ournosesareabletodetectupto10,000distinctsmells.Ourabilitytosmellandtastethisextremelylargerangeofsmellsiscontrolledbysomethinglike1,000genes,whichmakeupanamazing3%ofthehumangenome.ResearchersRichardAxelandLindaBuckweretogetherawardedaNobelPrizein2004forthe
4、irground-breakingresearchonthenatureofthisextraordinarysense.Thesetwoscientistswerethefirsttodescribethefamilyof1,000olfactory(嗅觉的)genesandtoexplainhowourolfactorysystemworks.Accordingtoonestudyintheresearchreview,smellingfreshpizzaoreventhepackagingoffastfoodscanbeenought
5、omakedriversfeelimpatientwithotherroadusers.Theyarethenmorelikelytospeedandexperienceuncontrollableangeronroads.Themostreasonableexplanationisthatthesecanallmakedriversfeelhungry,andthereforedesperatetosatisfytheirappetites.Incontrast,thesmellsofpeppermintandcinnamonweresh
6、owntoimproveconcentrationlevelsaswellasreducedrivers’impatience.Similarly,thesmellsoflemonandcoffeeappearedtopromoteclearthinkingandmentalfocus.However,thewaygenesregulatesmelldiffersfrompersontoperson.TheIsraelresearcherssaytheirstudyshowsthatnearlyeveryhumanbeingshowsadi
7、fferentpatternofactiveandinactivesmell-detectingreceptors.【文章大意】本文是一篇议论文,主要论述了气味和它的影响。1.WhatdidRichardAxelandLindaBuckfindout?A.Thetypeoffoodsmells.B.Thelogicalpartofhumanbrain.C.Thenatureofhumanolfactorysystem.D.Therelationshipbetweenfoodandfeelings.【解析】选C。细节理解题。根据题干中所提到的
8、两位科学家“RichardAxelandLindaBuck”,迅速定位文章的第三段关键句“ResearchersRichardAxelandLindaBuckweretogeth
