Duncan, ______ NBA star, is one of _______ few football players who are very popular to many of his Chinese fans.

A．an; the

B．an; a

C．the; the

D．the; a

（）指施工过程中耗用的构成工程实体和有助于工程实体形成的各项费用，包括人工费、材料费、机械使用费、仪表使用费

A、直接费

B、直接工程费

C、建筑安装工程费

D、工程费