For many people, paper is ________ better material, because ________ process for recycling paper seems much easier.

A．the; a

B．a; the

C．/; a

D．the; /

物业销售阶段，物业管理企业应及时提示建设单位，在签订物业买卖合同时，将( )向物业买受人明示并予以说明。

A．前期物业服务合同
B．建设项目图纸
C．业主公约
D．业主临时公约