大学英语二2、1Youhavebeenbadlyinjuredinacaraccident.Itisnecessarytogiveyouabloodtransfusionbecauseyoulostagreatdealofbloodintheaccident.However,specialcareshouldbetakeninselectingnewbloodforyou.Ifthebl

　　大学英语二2、1

　　Youhavebeenbadlyinjuredinacaraccident.Itisnecessarytogiveyouabloodtransfusionbecauseyoulostagreatdealofbloodintheaccident.However,specialcareshouldbetakeninselectingnewbloodforyou.Ifthebloodistoodifferentfromyourown,thetransfusioncouldkillyou.Therearefourbasictypesofblood:A,B,AB,andO.Asimpletestcanindicateaperson’sbloodtype,which,likehairandheight,isinheritedfromparents.Becauseofsubstancescontainedineachtype,thefourgroupsmustbetransfusedcarefully.Basically,AandBcannotbemixed.AandBcannotreceiveAB,butABmayreceiveAorB.Ocangivetoanyothergroup;henceitisoftencalledtheuniversaldonor.Fortheoppositereason,ABissometimescalledtheuniversalrecipient.However,becausesomanyreactionscanoccurintransfusions,patientsusuallyreceiveonlysaltorplasma(liquid)untiltheirbloodcanbematchedasexactlyaspossibleinthebloodbankofahospital.Inhisway,itispossibletoavoidanybadreactionstothetransfusion.Thereisarelationshipbetweenyourbloodtypeandyournationality.AmongEuropeansandpeopleofEuropeanancestry,about42percenthavetypeAwhile45percenthavetypeO.TherarestistypeAB.Otherraceshavedifferentpercentages.Forexample,someAmericanIndiangroupshavenearly100percenttypeO.

　　1)1、Agoodtitleforthispassageis__________

　　选项:

　　a、GettingBloodandPlasma

　　b、SpecialBloodTypes

　　c、HumanBloodTypes

　　d、TheBloodBankofaHospital

　　选哪个