答案:Olafsdottir.推理判断题。第一段Icelanders maintain the old tradition of adding “son”or“dottir”(daughter) to the father's given name to form surnames.(冰岛人保留着这样的古老传统,即在父亲的名后面加上“son”(儿子)或“dottir”(女儿)来构成自己的姓。)另外第二段最后两句话I received a letter from the school in France where my daughter was studying. It was addressed to me as“Mr. Olafsdottir”!(我收到女儿在法国学校的一封信。他们称呼我为Olafsdottir先生。)也暗示这是女儿的姓。因此得出答案。