人教版高中英语选择性必修第一册Unit 5 Using Language原创课文语法填空和翻译含答案一、阅读填空（共1题）1.CHEMICALVERSUSORGANICFARMINGChemicalpesticidesandartificialfertilisers_(spread)useinfarmingsincethemiddleofthe20thcentury.Whentheywerefirstintroduced,manyfarmerswelcomedthem_agreatwaytofightcropdiseaseandincreaseproduction.Overtime,however,_somescientistshavefoundisthattheirlong-termusecansometimesharm_thelandandpeopleshealth.Forexample,pesticidescandamagetheland_killingnotonlyharmfulbacteriaandinsects,_alsohelpfulones.Inaddition,thesechemicalscanstayinthesoilandundergroundwatersourcesforalongtime.Thisaffectsthecrops_(grow)onthelandand,_turn,theanimalsandhumanswhodigestthem.Manypeopleworrythatthesechemicalsmaymakethemillandevencausecancer.Infact,somepesticideslikeDDT_(prohibit)inmostcountriesbecauseofthedamagetheycausetopeopleandtheenvironment._forchemicalfertilisers,crops_(grow)withthemusuallygrowtoofasttoberich_nutrition.Theymaylookbeautifulontheoutside,butinsidethereisusuallymorewater_essentialminerals,andtheyoftenhavelessflavouraswell.Asanalternative,somefarmershaveswitched_organicfarming,andmanycustomershaveturnedtoorganicfoodwhentheyshopatthelocalgrocery.Organicfarmingissimplyfarming_usinganychemicals.Organicfarmersfocusonkeepingtheirsoilrichandfreeofdisease_naturalmeans.Forexample,manyorganicfarmersusenaturalwastefromanimalsasfertiliser.Thismakesthesoilintheirfields_(rich)inminerals.Italsokeepstheair,soil,water,andcropsfreeofchemicals.Organicfarmersalsousemanyothermethods_(produce)richsoil.Theyoftenchangethekindofcropgrownineachfieldeveryyear.Forinstance,theymaygrowcornorwheatinafieldoneyear,andthengrowbeanstherethenext.Whydifferentcropsaregrownisbecausetheyputimportantmineralsbackintotheground,_(make)itreadyforthenextbatchofcrops.Organicfarmersalsoplantdiversecropsthatusedifferent_(deep)ofsoiltohelpkeepitrich.Forexamplepeanutsgrowonthegroundssurface,butmanyothervegetablesputdowndeeproots.Thegoalofusingdifferentorganicfarmingmethodsis_(grow)goodfoodwhileavoidingdamagetotheenvironmentortopeopleshealth.Somepeoplewouldprefertostoptheuseofman-madechemicalsinagricultureentirely._keepsthemfromdoingsoisthefactthatchemicalfarmingservesthehighdemandforfoodaroundtheworld.Organicfarmingisnowherenearabletomeetthatneed._,thereisstillalongwaytofindasuitable_(solve)thatputssufficientfoodonthedinnertablewhile_(keep)peopleandtheenvironmentashealthyaspossible.1_2_3_4_5_6_7_8_9_10_11_12_13_14_15_16_17_18_19_20_21_22_23_24_25_二、书面表达（共5题）1.Chemicalpesticidesandartificialfertilisershavebeeninwidespreaduseinfarmingsincethemiddleofthe20thcentury.Whentheywerefirstintroduced,manyfarmerswelcomedthemasagreatwaytofightcropdiseaseandincreaseproduction.Overtime,however,whatsomescientistshavefoundisthattheirlong-termusecansometimesharmboththelandandpeopleshealth.2.Forexample,pesticidescandamagethelandbykillingnotonlyharmfulbacteriaandinsects,butalsohelpfulones.Inaddition,thesechemicalscanstayinthesoilandundergroundwatersourcesforalongtime.Thisaffectsthecropsgrownonthelandand,inturn,theanimalsandhumanswhodigestthem.Manypeopleworrythatthesechemicalsmaymakethemillandevencausecancer.Infact,somepesticideslikeDDThavebeenprohibitedinmostcountriesbecauseofthedamagetheycausetopeopleandtheenvironment.Asforchemicalfertilisers,cropsgrownwiththemusuallygrowtoofasttoberichinnutrition.Theymaylookbeautifulontheoutside,butinsidethereisusuallymorewaterthanessentialminerals,andtheyoftenhavelessflavouraswell.3.Asanalternative,somefarmershaveswitchedtoorganicfarming,andmanycustomershaveturnedtoorganicfoodwhentheyshopatthelocalgrocery.Organicfarmingissimplyfarmingwithoutusinganychemicals.Organicfarmersfocusonkeepingtheirsoilrichandfreeofdiseasethroughnaturalmeans.Forexample,manyorganicfarmersusenaturalwastefromanimalsasfertiliser.Thismakesthesoilintheirfieldsricherinminerals.Italsokeepstheair,soil,water,andcropsfreeofchemicals.4.Organicfarmersalsousemanyothermethodstoproducerichsoil.Theyoftenchangethekindofcropgrownineachfieldeveryyear.Forinstance,theymaygrowcornorwheatinafieldoneyear,andthengrowbeanstherethenext.Whydifferentcropsaregrownisbecausetheyputimportantmineralsbackintotheground,makingitreadyforthenextbatchofcrop