In1901KarlLandsteine的精選

問題詳情：閲讀短文，根據短文內容，完成短文後的句子。In1901,KarlLandsteiner,anAustrianscientist,discoverthattherearefourtypesofblood.ThesefourbloodtypeswerenamedA,B,AB,andO.Peoplehaveoneofthesefourtypes.Bloo...