1．下列各句中，加点的成语使用恰当的一项是(    )(3分)   

A．看一段快乐的小品，听一曲喜欢的歌曲，读一本隽永的书籍，和知心的朋友开心的聊聊天，这时，你的忧愁、烦恼都可能在一瞬之间付诸东流。

B．下半场比赛，中国队主教练杜伊在中国队落后时，果断换上了五名替补队员，就是这一念之差，使中国国奥队连扳三球，以3：3逼平了美国队。

C．新年第一天，街上热闹非凡，秧歌表演、穿越长跑等活动掀起了阵阵高潮，整个城市喜气洋洋，不可终日，市民们以丰富多彩的群众文体活动庆贺元旦到来。

D．就在各界对贝·布托遇刺事件的幕后黑手众说纷纭、莫衷一是之际，她的一名贴身随从进入了调查人员的视野。

NAC’s (Network Access Control) role is to restrict network access to only compliant endpoints and（）users. However, NAC is not a complete LAN（）solution; additional proactive and（）security measures must be implemented. Nevis is the first and only comprehensive LAN security solution that combines deep security processing of every packet at 10Gbps, ensuring a high level of security plus application availability and performance. Nevis integrates NAC as the first line of LAN security（）. In addition to NAC, enterprises need to implement role-based network access control as well as critical proactive security measures — real-time, multilevel（）inspection and microsecond threat containment.

NAC’s (Network Access Control) role is to restrict network access to only compliant endpoints and（）users.

A．automated

B．distinguished

C．authenticated

D．destructed