英文试题求答案4Youhavebeenbadlyinjuredinacaraccident.Itisnecessarytogiveyouabloodtransfusionbecauseyoulostagreatdealofbloodintheaccident.However,specialcaremustbetakeninselectingnewbloodforyou.Iftheblood

　　英文试题求答案4

　　Youhavebeenbadlyinjuredinacaraccident.Itisnecessarytogiveyouabloodtransfusionbecauseyoulostagreatdealofbloodintheaccident.However,specialcaremustbetakeninselectingnewbloodforyou.Ifthebloodistoodifferentfromyourown,thetransfusioncouldkillyou.

　　Therearefourbasictypesofblood:A,B,ABandO.Asimpletestcanindicateaperson'sbloodtype.Everybodyisbornwithoneofthesefourtypesofblood.(6)Bloodtype,likehaircolorandheight,isinheritedfromparents.

　　Becauseofsubstancescontainedineachtype,thefourgroupsmustbetransfusedcarefully.Basically,AandBcannotbemixed.AandBcannotreceiveAB,butABmayreceiveAorB.Ocangivetoanyothergroup,henceitisoftencalledtheuniversaldonor.Fortheoppositereason,ABsometimescalledtheuniversalrecipient.However,becausesomanyreactionscanoccurintransfusions,patientsusuallyreceiveonlysaltorplasma(liquid)untiltheirbloodcanbematchedasexactlyaspossibleinthebloodbankofahospital.Inthisway,itispossibletoavoidanybadreactionstothetransfusion.

　　(7)Thereisarelationshipbetweenyourbloodtypeandyournationality.AmongEuropeansandpeopleofEuropeanancestry,about42percenthavetypeAwhile45percenthavetypeO.TherarestistypeAB.Otherraceshavedifferentpercentages.Forexample,someAmericanIndiangroupshavenearly100percenttypeO.

　　131.Agoodtitleforthisselectionis______.

　　GettingBloodandPlasmaB.SpecialBloodandColors

　　HumanBloodTypesD.TheBloodBankofaHospital

　　132.Theword“hence”inline10means______.

　　A．alwaysB．oftenC.thereforeD.seldom

　　133.TheauthorsuggeststhatthethirdmostcommonbloodtypeofEuropeansis______.

　　AB.BC.ABD.O

　　134.PeoplewithtypeAbloodcanreceive______.

　　ABB.BC.OD.Noneoftheabove

　　135.Ifyouneedatransfusion,thebestandsafestbloodforyouis______.

　　typeABB.exactlythesametypeasyours

　　C.amixtureofsalt,plasma,andtypeOD.typeA