Zhengzhou will be more and more convenient when Zhengzhou Subway_____ in two years.

A．is completed

B．will be completed

C．will complete

D．has completed

班列运输的特点除运达迅速、手续简便、运输费用由铁道部统一公布外，尚有（）。

A、运价低

B、在运输组织上实行“五优先、五不准”

C、运量大

D、货源广