Organic(有机的)foodsarefoodsproducedaccordingtostrictguidelinessetforthbythegovernment.Theseguidelinesstatethatorganicfoodsmustbeproducedwithoutmodernman-madeprocessesandmaterials,suchasman-madepesticides(杀虫剂)andchemicalfertilizers.
Formosthistory,almostallfoodwasorganic.However,duringthe20thcentury,theprinciplesoftheIndustrialRevolutionwereappliedtoagriculture.Thisledtothedevelopmentofmanyman-madeprocessesandproductsthatwerebelievedtoimprovefarmingtechniques.Inotherwords,smallfarmsgrewlargerastheideasthatwereusedbyfactoriesandbigbusinesseswereputintoactiontogrowmorefoodfaster.
Overtime,theorganicmovementstartedtogetbacktotheold,traditionalmethodsoffarming.Thoseinfavoroforganicfoodbelievethattheman-madechemicalsandpesticidesusedinmodernfarmingcanbeharmfultoyourhealth.Theyalsobelievethatorganicfoodsarenaturallymorenutritious.
Ifyougotothegrocerystore,youwillnoticethatorganicfoodsmaybemoreexpensivethannon-organicfoods.Thisispartlybecauseofthatfactthatthegovernmentrequiresorganicfoodproducerstoobtainspecialcertification(鉴定)fortheirproducts.
Isorganicfoodworththeextracost?Somepeoplebelieveitis.Despitethelackofscientificfindingstosupporttheirclaims(说法),manypeoplestillpreferorganicfoods.Somepeoplebelievetheytastebetter,whileothersprefertoeatfoodthathasnotbeengrown,madeorprocessedusingman-madechemicals.
Ifyouwonderwhetheryoushouldchooseanorganicfoodinsteadofanon-organicone,thebestthingyoucandoistryforyourselfandseewhichyouprefer.Althoughorganicfoodswereonceonlyavailableinhealthfoodstores,youcanfindthemtodayatmostgrocerystores.
31.Thewriterwritesthefirstparagraphinorderto___.
A.advisepeopletoliveahealthylife
B.tellusthemeaningoforganicfoods
C.explainthegovernment'sguidelines
D.showman-madepesticidesareharmful
32.Whatmaybetheideathatwereusedtoproducemorefoodduringthe20thcentury?___
A.Morefarmersbegantotakeupfarming.
B.Lotsofsmallfarmsdisappearedonebyone.