2021高考英语一轮复习Unit3Underthesea课时作业新人教版选修7.doc

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1、Unit3　UndertheseaⅠ.阅读理解[2020·海南五校模拟]EngineershaveputahugegarbagecollectortogatherplasticmaterialinthePacificOceanbetweenCaliforniaandHawaii,theworld'slargestspreadofgarbage,twicethesizeofthestateofTexas.TheOceanCleanuporganizationcreatedthecollector.Thegroup'sfounder,BoyanSl

2、at,aninventorbornin1994,wasjust16whenhewasmovedtocleanuptheoceanswhenhewasonadiveandsawmoreplasticbagsthanfish.LastSaturday,ashippullingthepipeshapedfloatingbarrierleftSanFrancisco.Attachedtoitisascreeningskirtthathangsthreemetersdowninthewater.Thescreenisdesignedtocollectth

3、eplasticasitmovesthroughthewater.Seaanimalscansafelyswimunderthebarrier.Thecleanupsystemalsocomeswithlightspoweredbythesun,cameras,andotherspecialdevices(设备),sothesystemcancommunicateitspositionatalltimes.Thatwayasupportshipcanfinditeveryfewmonthstoremovetheplasticthathasbee

4、ncollected.Shippingcontainerswillholdalltheplasticgathered,includingbottlesandfishingequipmentandareexpectedtobebackonlandwithinayear.Thentheplasticwillberecycled.Thefreefloatingbarriersaremadetosurviveextremeweatherconditionsanddamagefromcontinualuse.Theywillstayinthewaterf

5、ortwentyyears,thuscollecting90%ofthegarbageinthearea.TheOceanCleanuphasreceived$35millionindonationstopayfortheproject,hopingtoput60freefloatingbarriersinthePacificOceanby2020.“It'simportanttoturnoffthetapsonplasticenteringtheocean,butIalsothinkpeoplecandomorethanonethingata

6、timetodealwiththisproblem，”Slatsaid.1．WhatdroveSlattoinventthecollector?A．Theinterestininvention.B．Hisfailuretodiveduetorubbish.C．Thesightoftoomanyplasticbags.D．HisknowledgeofgarbageinthePacificOcean.2．Howdoesthefloatingbarrierwork?-9-A．Itreachesintothewatertocollecttheplast

7、ic.B．Ithaslargecontainerstoproducepower.C．Itformsbarrierstoprotectseaanimals.D．Ashipdragsitalongintheocean.3．Whichdoestheunderlinedword“it”inparagraph4referto?A．Thesupportship.B．Thefloatingbarrier.C．Theplastictoberecycled.D．Thepositionofspecialdevices.4．Whatisimportantforpro

8、tectingtheoceanaccordingtoSlat?A．Sendingmorecollectorsintotheocean.B．Invent