A:Hello! Are you Mr. Black?
B:Hello! I'm Peter. Who are you?
C:Hello! May I speak to Mr. Black?
D:Hello! Where's Mr. Black?
有学者认为:“西周的封建社会,从纵剖面看,是一个宝塔式结构,王室之下有几级的封建,从横切面来看,统治阶级中,也存在着以亲族血缘为基础的宗族组织。”这说明西周社会在政治上( )