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ID:38637555
大小:78.00 KB
页数:9页
时间:2019-06-16
《河北省武邑中学2015届高考英语总复习 单元检测36》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、武邑中学2014-2015高三一轮复习单元检测题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).Accordingtoarecentstudypublishedinthejou
2、rnalScience.ThestudywasconductedbyateamofresearchersatNewcastleUniversityintheUnitedKingdom.Theyfoundthatthenectar(花蜜)ofsomeflowers,suchasthosefromgrapefruitandlemonplants,aswellascertaincoffeeflowers,containslowdosesofcaffeine.Togetbeestofeedontheseflowers,the
3、teamtrainedtheinsectstoassociatefoodwiththesmelloftheflowers.Theyalsotrainedanothergroupofbeestofeedonnectarfromflowersthatweresweetenedwithasugar,butdidnotcontaincaffeine.After24hours,thebeestrainedoncaffeinatedflowersreturnedtotheseplantsthreetimesasoftenasth
4、osetrainedonthesweetenedflowersreturnedtotheuncaffeinatedplants.ProfessorGeraldineWrightledtheresearchers.“Rememberingfloraltraits(花部特征)isdifficultforbeestoperformatafastpaceastheyflyfromflowertoflowerandwefoundthatcaffeinehelpsthebeerememberwheretheflowersare,
5、”Wrightsaidinastatement.Improvedmemoryledtothebetterpollination.That’sbecauseoncebeessipthecaffeinenectar,theycontinuetolookformorecoffeeplantstopollinate.Thisalsosuggeststhatcaffeineplaysaroleinimprovingthebees’abilitytosearchforfood.Researchersfoundthatcaffei
6、ne’seffectonthebeebrainissimilartoitseffectonmammals.“Thechangeissimilartothatproducedbycaffeineinneurons(神经元)associatedwithlearningandmemoryintheratbrain,”Wrightsaid.Beepopulationshavedecliningsince2007.Thedramaticdropintheinsects’numbershasseriouseffectsforec
7、osystemsandthefarmingindustry.Beesareneededinthereproductionofcropsandspreadingwildflowerspecies.Understandingwhatkeepsbeesbuzzingcouldhelptomakesurethattheinsectsareabletorememberandpollinatetheirfavoriteflowers.21.Whichofthefollowingismentionedinthepassage?9A
8、.Caffeinehasnoeffectontheratbrain.B.Beepopulationhasbeenincreasing.C.Thenectaroflemonplantscontainscaffeine.D.Beesdislikenectarfromsweetenedflowers.22.Afterreadingthepassage
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