2014高考英语阅读理解专题巧突破训练（9）

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1、2014高考英语阅读理解专题巧突破训练[科普知识型阅读理解(二)]-----(二)Europe'sdeadlyoutbreakofarareformofE．coli(大肠杆菌)bacteriahasbroughtnewattentiontofoodsafetyissues.E．colibacterianaturallyliveintheintestines(肠)ofhumansandmanyanimals.MostkindsofE．coliareharmlessbutsomecanmakepeoples

2、ick.Oneoftheproblemswhenpeoplegetsickfromfoodisthatthesimplestquestionisoftendifficultorevenimpossibletoanswer.Justwhatdidthepeopleeatthatmadethemsick?Ofcourse,onewaytoavoidsuchproblemsistokeepdangerousorganismsoutofthefoodsupply.This_is_easier_said_than

3、_done,_butscientistskeeplookingfornewways.ScientistsintheUnitedStateshavedevelopedanexperimentalsystemthatusesahightechoptical(光学的)scanner.Theinspectionsystemisfixedinthepackinghouseswhereproduceissortedformarket.Thesystemisdesignedtoidentifytheproducep

4、ollutedbysoiloranimalwaste.Thenewscannercanalsoshowdamageandimperfectionsthatmightmaketheproduceunappealingtoshoppers.ScientistsdesignedthesystemataDepartmentofAgricultureresearchcentreinBeltsville,Maryland.MoonKimoftheAgriculturalResearchServiceledthete

5、am.MOONKIM:“Wewererequested,wewereasked,todevelopamethodtotestthepollutedproduce.Sowestartedwiththeappleasthemodelsample.”Thescannerusesahighspeedcameraplacedovertheconveyerbeltthatmovestheproducealong.Astheapplesmovealongthebelt,thescannercapturesimage

6、sofeachpieceoffruit.Aspectrographdevicecanusethelighttocheckanappletoshowevidenceofdamage.MoonKimsaystheteamhopesthesystemwillbeavailablebeforelong.MOONKIM:“Wearetargetingfordevelopmentincommercialplantsforthenextseveralyears.”Thescannercandirectasortin

7、gmachinetoseparatethebadapplesfromthegoodones.Thesystemiscurrentlyabletoshowthesurfaceofonlyhalftheapple第10页共10页asitspeedsby.Theinventorshopetoimprovetheprocesssoitcanshowthewholesurface.1.Thepassagemainlytalksabout________．A.thedangerofE．colibacteriatoh

8、ealthB.thewaytoavoidgettingsickfromfoodC.asystemtotestthepollutedproduceD.thenewattentiontofoodsafetyissues2．Accordingtothepassage,weknowthenewscanner________．A.hasalreadyusedinthesupermarketB.isperfecttofindoutthepolluted