四六级阅读练习-灰尘背后的那些事儿.docx

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四六级阅读练习:灰尘背后的那些事儿

本篇阅读材料“灰尘背后的那些事儿”选自《时代》（原文标题：What'sinHouseholdDust?Don'tAsk2021.223）。如果大家觉得比较简单，就当作泛读材料了解了解，认识几个新单词或新表达方式也不错。如果大家觉得这些材料理解上有难度，不妨当做挑战自己的拔高训练，希望大家都有进步^^It'shardtogettooworkedupaboutdust.Yes,it'sanuisance,butit'shardlyonethatcausesusmuchanxiety—andourlanguageitselfsuggestsasmuch.Wecallthoseclumpsofthestuffunderthebeddustbunniesafterall,not,say,dustvermin.togetworkedup为某件事生气；不开心clumpsof一团一团的dustbunny积尘；灰兔子（关于灰尘的比较萌的说法）Butthere'sahigherickfactortodustthanyoumightthink.Andthere'sasciencetohowitgetsaround—asciencethatDavidLaytonandPalomaBeamer,professorsofenvironmentalpolicyattheUniversityofArizona,areexploring.getaround传播；散播LaytonandBeamer,whoselateststudyhasbeenacceptedforfallpublicationinthejournalEnvironmentalScience&Technology,knewalotabouttheirsubjectevenbeforetheysettowork.Historically,everyonefromchemiststohomemakershastriedtofigureoutjustwhatdustismadeof,andtheArizonaresearchersdrewtheirpreliminarydatamostlyfromtwostudiesofhouseholddustconductedintheNetherlandsandtheU.S.TheAmericansurveyinparticularwasabigone,coveringsixMidwesternstates.LaytonandBeameralsoincludedalocalizedstudyinSacramento,Calif.,thatfocusedparticularlyonleadcontamination.Whatallthosesurveysshowedwasdecidedlyunappetizing.figureout理解；解决；计算Thespecificdustmixinanyhouseholddiffersaccordingtoclimate,ageofthehouseandthenumberofpeoplewholiveinit—nottomentiontheoccupants'cooking,cleaningandsmokinghabits.Butnearlyeverywhere,dustconsistsofsomecombinationofshedbitsofhumanskin,animalfur,decomposinginsects,fooddebris,lintandorganicfibersfromclothes,beddingandotherfabrics,tracked-insoil,soot,particulatematterfromsmokingandcooking,and,disturbingly,lead,arsenicandevenDDT."Therearemore[components],"Beamersays."Dustisahodgepodgeofallsortsofthings.Itwouldprobablybeimpossibletomakealistofallthepossibleitems."Butdust'singredientlabelisnotthewholestory,sinceallofthoseflecksandbitsbehavedifferentlyandpresentdifferentlevelsofhealthrisk.Toinvestigat