山东省实验中学2015届高三第三次诊断考试英语试题-Word版含解析

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1、山东省实验中学高三第三次诊断考试(2014.12)第二部分阅读理解(共两节。满分40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’ttheonlyonesgettingabuzz强烈的情感fromcoffee.Caffeinecanimprovememoryamonghoneybeesandleadtobetterpollination(授粉).Accordingtoarecentstudypub

2、lishedinthejournalScience.ThestudywasconductedbyateamofresearchersatNewcastleUniversityintheUnitedKingdom.Theyfoundthatthenectar(花蜜)ofsomeflowers,suchasthosefromgrapefruitandlemonplants,aswellascertaincoffeeflowers,containslowdoses剂量ofcaffeine.Togetbeestofeedo

3、ntheseflowers,theteamtrainedtheinsectstoassociatefoodwiththesmelloftheflowers.Theyalsotrainedanothergroupofbeestofeedonnectarfromflowersthatweresweetenedwithasugar,butdidnotcontaincaffeine.After24hours,thebeestrainedoncaffeinatedflowersreturnedtotheseplantsthr

4、eetimesasoftenasthosetrainedonthesweetenedflowersreturnedtotheuncaffeinatedplants.ProfessorGeraldineWrightledtheresearchers.“Rememberingfloraltraits(花部特征)isdifficultforbeestoperformatafastpaceastheyflyfromflowertoflowerandwefoundthatcaffeinehelpsthebeeremember

5、wheretheflowersare,”Wrightsaidinastatement.Improvedmemoryledtothebetterpollination.That’sbecauseoncebeessipthecaffeinenectar,theycontinuetolookformorecoffeeplantstopollinate.Thisalsosuggeststhatcaffeineplaysaroleinimprovingthebees’abilitytosearchforfood.Resear

6、chersfoundthatcaffeine’seffectonthebeebrainissimilartoitseffectonmammals.“Thechangeissimilartothatproducedbycaffeineinneurons(神经元)associatedwithlearningandmemoryintheratbrain,”Wrightsaid.Beepopulationshavedecliningsince2007.Thedramaticdropintheinsects’numbersh

7、asseriouseffectsforecosystemsandthefarmingindustry.Beesareneededinthereproductionofcropsandspreadingwildflowerspecies.Understandingwhatkeepsbeesbuzzingcouldhelptomakesurethattheinsectsareabletorememberandpollinatetheirfavoriteflowers.21.Whichofthefollowingisme

8、ntionedinthepassage?A.Caffeinehasnoeffectontheratbrain.B.Beepopulationhasbeenincreasing.C.Thenectaroflemonplantscontainscaffeine.D.Beesdislikenectarfromsweetenedflowers.22.Afterrea