欢迎来到天天文库
浏览记录
ID:35875679
大小:43.50 KB
页数:8页
时间:2019-04-21
《2019高考英语一轮优编选题unit2robots含解析新人教版选修7》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、Unit2Robots李仕才一、阅读理解。 Anewstudyhasfoundtheamountofantibioticsgiventofarmanimalsisexpectedtoincreasebytwothirdsoverthenext15years.Researchersarelinkingthegrowingdependenceonthedrugstorisingdemandformeat,milkandeggs.Theresearcherswarnthedrugscouldquickenthedevelopmentofantibioti
2、csresistant(耐抗生素的)infections.SuchinfectionsarealreadyamajorpublichealthconcernintheUnitedStates. Expertssaywhenpeoplestoplivinginpoverty,thefirstthingtheywanttodoiseatbetter,ratherthanearnmoremoney.Formostpeople,thatmeanstheirdietshouldcontainmoremeat.IncreasingprosperityinAsi
3、ahasmeantpeoplethereareeatingnearlyfourtimesasmuchmeat,milkanddairyproductsastheydid50yearsago. Tomeetthatdemand,farmshaveputmanyanimalsintosmallerspaces.Astheanimalsarecrowdedtogether,oftentheeasiestwaytodealwithsomeoftheproblemsofcrowdingistogivethemantibiotics.It’sclearthatantib
4、ioticshelpanimalsstayhealthyinacrowdedenvironmentandgrowfaster.Butbacteriacandevelopresistancetothedrugsgradually,andtheantibiotics-resistantbacteriacanspreadtopeople. Doctorsfindthatantibioticsthatonceworkedagainsttheinfectionsnolongerdo.Thebacteriahavelearnedwaystofightthemedicin
5、e.Doctorssaytheheavyuseofantibioticsinanimalsisoneofseveralreasonsforthegrowthofantibioticresistanceworldwide.IntheUnitedStates,atleasttwomillionpeoplegetdrug-resistantinfectionseachyear.Atleast23,000diefromaninfection. RamananLaxminarayanheadstheCenterforDiseaseDynamics,Economicsa
6、ndPolicy.Hesaystheproblemisexpectedtogetworse.Hebelievestheuseofantibioticsinanimalswillsoonincreasesharply.Hesaysthatwillnotbegoodforhumanhealth.Heandotherresearcherswroteareportonthestudy,whichwaspublishedintheProceedingsofthe NationalAcademyofSciences.TheyuseddatafromtheUnitedNati
7、onsthattellhowandwherelivestock(牲畜)areraisedtoday.Theythenpredictedhowsuchproductionwouldchangeby2030. Europehasbannedtheuseofantibioticstoincreaseanimalgrowth.AndsheaddstheUnitedStatesishopingtopersuadefarmerstostopusingantibioticsforthatpurpose.1.Whatisthepassagemainlyabout?A.How
8、tokeepfarman
此文档下载收益归作者所有