Lang Ping , who used to be captain of Chinese Women's volleyball team, ______volleyball in China for

almost twenty years.[ ]

A. have played

B. played  

C. was playing    

D. had played

根据《民用机场建设管理规定》，民航地区管理局对运输机场选址报告的内容及深度进行审核后，应在（）日内向民航总局上报审核意见及选址报告。

A.15

B.20

C.25

D.30