问题
选择题
My most famous schoolmate of all， who really left his mark on America，was Tom，my contemporary when I was at a primary school.
A．one
B．the one
C．he
D．someone
答案
答案：B
解析:the one作同位语，指代上文中的my most famous schoolmate of all。one作代词表示泛指，泛指某人或某物；he作主语，不作同位语；someone意为“某人”，泛指某人。故答案为B.