Although the bulk of industry resources and energies have focused on developing the fastest (11) or slickest (12) , more and more mindshare is turning to the evolution of the computer interface. Advancements in the areas of input devices, (13) processing and virtual reality could lead to fundamental changes in the way human and computer interact. The technological battlefield of the future will be adding layers between the user and the raw machine to make the (14) as invisible as possible. (15) represents the next evolutionary step for the interface.

（12）是（）

A.microprocessor

B.operatingsystems

C.voice

D.interface

辅导人员必须是有主承销资格的证券公司正式从业人员、并从事证券承销业务两年以上。辅导人员中，至少有两人具有辅导两家以上企业股票发行上市经验。( )