-What do you think of these flowers？

-They are           beautiful          I love them very much.　　

A．such;that

B．too;to

C．so; that

D．enough; for

同一种无机多孔材料的密度和表观密度的数值关系为（）。

A.密度值＞表观密度值

B.密度值＜表观密度值

C.密度值=表观密度值

D.两者关系不确定