2019高考英语一轮阅读理解巩固练（2）含解析

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1、2019高考英语一轮阅读理解巩固练（2）李仕才AEveryoneknowsthatdeathisnatural,butdoyouhaveanyideaoftheprocessofdying?Modernscientistsdividetheprocessofdyingintotwostages—clinicalortemporarydeathandbiologicaldeath.Clinicaldeathoccurswhenthevitalorgans,suchastheheartorlungs,havestoppedfu

2、nctioning,buthavenotsufferedpermanentdamage.Theorganismcanstillbesaved.Biologicaldeathoccurswhenchangesintheorganismleadtothe“breakingup”ofvitalcellsandtissues.Deathisthenunchangeableandfinal.Scientistshavebeenseekingawaytoprolongtheperiodofclinicaldeathsothattheo

3、rganismcanremainalivebeforebiologicaldeathoccurs.Thebestmethoddevelopedsofarinvolvescoolingtheorganism,combinedwithnarcotic(麻醉)sleep.Byslowingdownthebody’smetabolism(新陈代谢),coolingdelaystheprocessesleadingtobiologicaldeath.Toshowhowthisworks,scientistsperformedanex

4、perimentonasix-year-oldfemalemonkeycalledKeta.ThescientistputKetatosleepwithanarcotic.Thentheysurroundedherbodywithice-bagsandbegancheckingherbodytemperature.Whenithaddroppedto28degreesthescientistsbegantakingbloodoutfromanartery(动脉).Themonkey’sbloodpressuredecrea

5、sedandanhourlaterboththeheartandbreathingstopped:clinicaldeathsetin.FortwentyminutesKetaremainedinthisstate.Hertemperaturedroppedto22degrees.Atthispointthescientistspumpedbloodintoanarteryinthedirectionoftheheartandstartedartificialbreathing.AftertwominutesKeta’sh

6、eartbecameactiveoncemore.Afterfifteenminutes,spontaneous(自发的)breathingbegan,andafterfourhoursKetaopenedhereyesandliftedherhead. Aftersixhours,whenthescientiststriedtogiveherapenicillin(青霉素)injection,Ketaseizedthesyringe(注射器)andranwithitaroundtheroom. Herbehaviordi

7、fferedlittlefromthatofahealthyanimal.1.Forapersonwhosuffersfromtheclinicaldeath_________.A.he is still very much aliveB.he cannot avoid final deathC.his most important organs are damagedforeverD.hestillhasthepossibilityofgettingbacktolife2.Scientiststrytomaketheti

8、meofclinicaldeathlongerinorderto_________.A.cool the organismB.delay the coming of biological deathC.slow down the body’s metabolismD.bringvitalcellsand