Apersonhasbeenbadlyinjuredinacaraccident.Itisnecessarytogivehimatransfusion(输血)becausehehaslostmuchbloodintheaccident.Howeverspecialcaremustbetakeninselectingnewbloodforhim.Ifthebloodistoodiff

　　Apersonhasbeenbadlyinjuredinacaraccident.Itisnecessarytogivehimatransfusion(输血)becausehehaslostmuchbloodintheaccident.Howeverspecialcaremustbetakeninselectingnewbloodforhim.Ifthebloodistoodifferentfromhisownthetransfusioncankillhim.

　　Therearefourbasicbloodgroups:ABABandO.Asingletestcantellusaperson’sbloodgroup.Everybodyisbornwithoneofthesefourbloodgroups.People’sbloodgrouplikehaircolourisinherited(继承)fromparents.

　　Becausethesubstancescontainedineachgrouparedifferenttransfusionmustbegivencarefully.BasicallyAandBcannotbemixed.AandBcannotreceiveABbutABmayreceiveAorB.Ocanbegiventoanyothergroupsoitisoftencalledtheuniversaldonor.OnthecontraryABissometimescalledtheuniversalrecipient(接受者).Howeverbeforebeinggiventhetransfusionpatientsusuallyreceiveonlysaltorplasma(血浆)untiltheirbloodcanbematchedasexactlyaspossible.Inthiswayitispossibletoavoidanybadresultsofthetransfusion.

　　Thereisarelationshipbetweenourbloodgroupsandournationalities.AmongtheEuropeansabout42percentarebloodgroupAwhile45percentarebloodgroupO.TherarestisbloodgroupAB.HoweversomeAmericanIndiangroupsarenearly100percentbloodgroupO.

　　【小题1】Whichofthefollowingshowsthecorrectrelationshipinbloodtransfusion?(→="giving"bloodto)

　　【小题2】Usuallybeforebeinggivenatransfusion________.

　　A．apersonneedstoreceivesaltorplasmafirstB．apersonneedstohaveagoodrestC．apersonneedstohavealotoffoodandwaterD．apersonneedstofindthepersonwiththesamebloodgroupashim【小题3】ThethirdmostcommonbloodtypeamongtheEuropeansis_______.A．AB．BC．ABD．O【小题4】WhichisNOTrightaccordingtothepassage?

　　A.Aperson’sbloodgroupdependsonhisparents.

　　B.Thereisonlyonekindofbloodgroupinaperson’sbody.

　　C.About13percentoftheEuropeanshavebloodgroupAB.

　　D.MostofAmericanIndianscanbeuniversalblooddonors.

　　【小题5】Whichistheb