He is an        tourist and he has        interesting experiences.

A．experienced; a great many of

B．experienced; a great deal of

C．experiential; a great deal of

D．experienced; a great many

“分封制—郡县制—郡国并行制—行省制”，这种演变说明了（）

A.封建中央集权制度下地方建制逐渐完善

B.中国古代一直在着力解决君权与相权的矛盾

C.高度集权的政治制度逐渐瓦解

D.古代中国的地方行政制度逐渐完善