During the busiest season like National Day, Spring Festival, the traffic company provides

______ buses for the traveler. [ ]

A. extra

B. certain

C. various

D. unusual

金融市场具有以下( )功能。

A．货币资金融通功能

B．优化资源配置功能

C．风险分散与风险管理功能

D．经济调节功能

E．定价功能