2019-2020年高考英语总复习单元检测36.doc

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1、2019-2020年高考英语总复习单元检测36第二部分阅读理解(共两节。满分加分)第一节(共15小题；每小题2分，满分30分)阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该项涂黑。AHumansaren’ttheonlyonesgettingabuzzfromcoffee．canimprovememoryamonghoneybeesandleadtobetterpollination(授粉)．AccordingtoarecentstudypublishedinthejournalScience．Thestudyw

2、asconductedbyateamofresearchersatNewcastleUniversityintheUnitedKingdom．Theyfoundthatthenectar(花蜜)ofsomeflowers，suchasthosefromgrapefruitandlemonplants，aswellascertaincoffeeflowers，containslowdosesofcaffeine．Togetbeestofeedontheseflowers，theteamtrainedtheinsectstoassociatefoodwit

3、hthesmelloftheflowers．Theyalsotrainedanothergroupofbeestofeedonnectarfromflowersthatweresweetenedwithasugar,butdidnotcontaincaffeine．After24hours，thebeestrainedoncaffeinatedflowersreturnedtotheseplantsthreetimesasoftenasthosetrainedonthesweetenedflowersreturnedtotheuncaffeinated

4、plants．ProfessorGeraldineWrightledtheresearchers．“Rememberingfloraltraits(花部特征)isdifficultforbeestoperformatafastpaceastheyflyfromflowertoflowerandwefoundthatcaffeinehelpsthebeerememberwheretheflowersare，”Wrightsaidinastatement．Improvedmemoryledtothebetterpollination．That’sbecau

5、seoncebeessipthecaffeinenectar,theycontinuetolookformorecoffeeplantstopollinate．Thisalsosuggeststhatcaffeineplaysaroleinimprovingthebees’abilitytosearchforfood．Researchersfoundthatcaffeine’seffectonthebeebrainissimilartoitseffectonmammals．“Thechangeissimilartothatproducedbycaffe

6、ineinneurons(神经元)associatedwithlearningandmemoryintheratbrain，”Wrightsaid．Beepopulationshavedecliningsincexx．Thedramaticdropintheinsects’numbershasseriouseffectsforecosystemsandthefarmingindustry．Beesareneededinthereproductionofcropsandspreadingwildflowerspecies．Understandingwha

7、tkeepsbeesbuzzingcouldhelptomakesurethattheinsectsareabletorememberandpollinatetheirfavoriteflowers．21．Whichofthefollowingismentionedinthepassage?A．Caffeinehasnoeffectontheratbrain．B.Beepopulationhasbeenincreasing．C．Thenectaroflemonplantscontainscaffeine．D．Beesdislikenectarfroms

8、weetenedflowers．22．Afterreadingthepassage，John，