未来我国城镇化可能出现的新趋势是（）

A.各级城市普遍发展

B.以大城市为主体多元化道路

C.大城市都走向国际化

D.西部城市化成为重点

Advertising is different from other forms of communication in that the advertiser pays for the

message         .[ ]

A. to deliver

B. having delivered

C. to be delivered

D. delivering