将“存留养亲”思想最先制度化的皇帝是( )
A.秦始皇
B.汉高祖
C.汉武帝
D.孝文帝
参考答案:D
--Hello! 565-4327. Who’s ?
-- is Mary.
A.this; That
B.this; This
C.that; That
D.that; This