高考英语一轮复习unit5nelsonmandela_amodernhero单元检测卷新人教版必修1

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1、到乌蒙山区的昭通;从甘肃中部的定西，到内蒙古边陲的阿尔山，看真贫、知真贫，真扶贫、扶真贫，成为“花的精力最多”的事;“扶贫先扶志”“扶贫必扶智”“实施精准扶贫”Unit5NelsonMandela-amodernheroⅠ.阅读理解You’reinabitofadilemmastandinginfrontoftheproducesectionofyourlocalsupermarket.Inonehand,you’reholdingaconventionallygrownGrannySmithapple.Inyourotherh

2、and,youhaveonethat’sbeenorganicallygrown.Bothapplesarefirm,shinyandgreen.Bothprovidevitaminsandfiber,andbotharefreeoffat,sodium(钠)andcholesterol（胆固醇）.Theconventionallygrownapplecostslessandisaprovenfamilyfavorite.Buttheorganicapplehasalabelthatsays“USDAOrganic”.Doest

3、hatmeanit’sbetter?Safer?Morenutritious?Severaldifferencesbetweenorganicandnon-organicfoodsexist.Becomeabetterinformedconsumerforyournexttriptothesupermarket.Theword“organic”referstothewayfarmersgrowandprocessagriculturalproducts,suchasfruits,vegetables,grains,dairypr

4、oductsandmeat.Organicfarmingpracticesaredesignedtoencouragesoilandwaterconservationandreducepollution.Farmerswhogroworganicproduceandmeatdon’tuseconventionalmethodstofertilize,controlweedsorpreventlivestockdisease.Hereareotherdifferencesbetweenconventionalfarmingando

5、rganicfarming:ConventionalfarmersOrganicfarmersApplychemicalfertilizerstopromoteplantgrowth.Applynaturalfertilizerstofeedsoilandplants.Applyinsecticidestoreducepestsanddisease.Usebeneficialinsectsandbirdstoreducepestsanddisease.Giveanimalsantibiotics（抗生素）,growthhormo

6、nes（激素）andmedicationstopreventdiseaseandpromotegrowth,housing.Giveanimalsorganicfoodandallowthemaccesstotheoutdoors.Usepreventivemeasures—suchasabalanceddietandcleanhousing—tohelpminimizedisease.*Organicornot?Checkthelabel.TheU.S.DepartmentofAgriculture（USDA）hasestab

7、lishedanorganiccertificationprogramthatrequiresallorganicfoodstomeetstrictgovernmentstandards.Thesestandardsregulatehowsuchfoodsaregrown,handledandprocessed.AnyfarmerorfoodmanufacturerwholabelsandsellsaproductasorganicmustbeUSDAcertifiedasmeetingthesestandards.Onlypr

8、oducerswhoselllessthan5,000ayearinorganicfoodsareexempt（免除）fromthiscertification.IfafoodbearsaUSDAOrganiclabel,itmeansit'sproduced