2022考研英语一真题+答案.pdfVIP

吾日三省乎吾身。为人谋而不忠乎?与朋友交而不信乎?传不习乎?——《论语》

SectionⅠUseofEnglish

Directions:

Readthefollowingtext.Choosethebestword(s)foreachnumberedblankandmarkA,B,CorDonthe

ANSWERSHEET.(10points)

ideathatplantshavesomedegreeofconsciousnessfirsttookrootintheearly2000s;theterm“plant

neurobiology”was1aroundthenotionthatsomeaspectsofplantbehaviorcouldbe2tointelligencein

animals.3plantslackbrains,thefiringofelectricalsignalsintheirstemsandleavesnonethelesstriggered

responsesthat4consciousness,researcherspreviouslyreported.

Butsuchanideaisuntrue,accordingtoanewopinionarticle.Plantbiologyiscomplexandfascinating,butit

5sogreatlyfromthatofanimalsthatso-called6ofplants’intelligenceisinconclusive,theauthorswrote.

Beginningin2006,somescientistshave7thatplantspossessneuron-likecellsthatinteractwith

hormonesandneurotransmitters,8“aplantnervoussystem,9tothatinanimals,”saidleadstudyauthor

LincolnTaiz,“They10claimedthatplantshave‘brain-likecommandcenters’attheirroottips.”

This11makessenseifyousimplifytheworkingsofacomplexbrain,12ittoanarrayofelectrical

pulses;cellsinplantsalsocommunicatethroughelectricalsignals.13,thesignalinginaplantisonly14

similartothefiringinacomplexanimalbrain,whichismorethan“amassofcellsthatcommunicateby

electricity,”Taizsaid.

“Forconsciousnesstoevolve,abrainwithathreshold15ofcomplexityandcapacityisrequired,”he

16.“Sinceplantsdon’thavenervoussystems,the17thattheyhaveconsciousnessareeffectivelyze