资源描述：
《2019高考英语一轮基础练 Unit 10 Money（含解析）北师大版必修4》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、Unit10Money阅读理解AIllegallytradedendangeredspeciesthatescape,formingsecondarypopulations,offerhopetotheirlong-termsurvival,astudysuggests."ThisfirstcametomyattentionwhenIreadanewsstoryabouttheseizureofanillegalshipmentof23yellowcrestedcockatoos(小葵花凤头鹦鹉),"saidLukeGibson,acoll
2、egeteacher.Helearnedthatthespecieswascriticallyendangered,whichsurprisedhim.ThisencouragedDr.Gibsonandhiscolleaguetoinvestigate(调查)howacriticallyendangeredspecieshadbeeself-sustainingoutsideofitsnaturalrange.Theydiscovered49casesofagloballythreatenedspeciesbeingestablished
3、asaseparatepopulation,whichtheyhadn’tthoughtof,includingtheyellow-crestedcockatoointheircity."Thisisaspecieswhichisprimarilythreatenedbywildlifetrade,"hetoldBBCNews."Poachers(偷猎者)gooutintotheforestinitsnativerangeineasternIndonesiaandcapturethebirdandthenshipthemoff,usuall
4、yuptoourcitywherethereisastrongdemandforpetbirds.Thisiswhathasfueledthedeclineofthisspeciesinitsnativerange.Butit'sreallyinterestingbecausethatsamecausealsohadanothereffect:someofthepeoplewhowerekeepingthisspecieshereaccidentallyorintentionallyreleasedthem.”Asaresultofenou
5、ghofthebirdssetfree,itallowedanewself-sustainingpopulationtobeestablishedinthiscity.ThegovernmentinofDr.Gibson’scityhasmadeitillegaltocapturethespecies,eventhoughitisanon-nativespecies.Becausethecityisaffluentandrelativelywelleducated,thecasesofpeoplebreakingthelawareextre
6、melyrare,explainedDrGibson,unlikeinitsnativerangeinIndonesia,wherecapturingbirdsformsamajorsourceofine.However,therecanbedownsides(缺点)tothenewlyestablishedpopulationofendangeredspecies,suchasalimitedgeneticpool,andsufferingfromnoveldiseases.Itdidalsopresentapossible“veryin
7、teresting”opportunityforconservationists,Dr.Gibsonsuggested.Thiswouldinvolve"harvesting"someofthenewlyestablishedsecondarypopulation,whichmayprovideawaytohelpslowglobalbiodiversityloss.1.WhatwasbeyondGibson’sexpectationsaccordingtothefirstparagraph?A.Thehighrateofwildlifet
8、rade.B.Thepreciousnessofthebirds.C.Thefactthatthebirdsnearlydisappear.D.Thenewsthatthebir
