2019高考英语一轮题型练 Unit 23 Conflict（含解析）北师大版选修8

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1、选修7U23一、阅读理解A   Anewstudyhasfoundtheamountofantibioticsgiventofarmanimalsisexpectedtoincreasebytwo­thirdsoverthenext15years.Researchersarelinkingthegrowingdependenceonthedrugstorisingdemandformeat,milkandeggs.Theresearcherswarnthedrugscouldquickenthedevelo

2、pmentofantibiotics­resistant(耐抗生素的)infections.SuchinfectionsarealreadyamajorpublichealthconcernintheUnitedStates.   Expertssaywhenpeoplestoplivinginpoverty,thefirstthingtheywanttodoiseatbetter,ratherthanearnmoremoney.Formostpeople,thatmeanstheirdietshouldc

3、ontainmoremeat.IncreasingprosperityinAsiahasmeantpeoplethereareeatingnearlyfourtimesasmuchmeat,milkanddairyproductsastheydid50yearsago.   Tomeetthatdemand,farmshaveputmanyanimalsintosmallerspaces.Astheanimalsarecrowdedtogether,oftentheeasiestwaytodealwithsomeo

4、ftheproblemsofcrowdingistogivethemantibiotics.It’sclearthatantibioticshelpanimalsstayhealthyinacrowdedenvironmentandgrowfaster.Butbacteriacandevelopresistancetothedrugsgradually,andtheantibiotics-resistantbacteriacanspreadtopeople.   Doctorsfindthatantibiotics

5、thatonceworkedagainsttheinfectionsnolongerdo.Thebacteriahavelearnedwaystofightthemedicine.Doctorssaytheheavyuseofantibioticsinanimalsisoneofseveralreasonsforthegrowthofantibioticresistanceworldwide.IntheUnitedStates,atleasttwomillionpeoplegetdrug-resistantinfe

6、ctionseachyear.Atleast23,000diefromaninfection.   RamananLaxminarayanheadstheCenterforDiseaseDynamics,EconomicsandPolicy.Hesaystheproblemisexpectedtogetworse.Hebelievestheuseofantibioticsinanimalswillsoonincreasesharply.Hesaysthatwillnotbegoodforhumanhealth.He

7、andotherresearcherswroteareportonthestudy,whichwaspublishedintheProceedingsofthe NationalAcademyofSciences.TheyuseddatafromtheUnitedNationsthattellhowandwherelivestock(牲畜)areraisedtoday.Theythenpredictedhowsuchproductionwouldchangeby2030.   Europehasbannedtheu

8、seofantibioticstoincreaseanimalgrowth.AndsheaddstheUnitedStatesishopingtopersuadefarmerstostopusingantibioticsforthatpurpose.1.Whatisthepassagemainlyabout?A.Howtokeepfarmanimalshea