________ mainly for the invention of the telephone, Alexander Graham Bell devoted his life to helping the deaf.
句意: 尽管为人所铭记的主要还是他发明电话, 但是亚历山大·格拉汉姆·贝尔一生都在帮助聋哑人。 主语是人, 谓语动词remember用被动形式。 根据句意, 答案为D项。