As expected, the boy who shows great　　　in playing badminton has been admitted to the sport university for his talent.

A．requirement

B．respect

C．addition

D．promise

开发利用水资源，应当首先满足的是下列哪一选项内容( )

A．农业用水

B．工业用水

C．航运需要

D．居民生活用水