An　Intranet　is(60)the　application　of　Internet　technology　within　an　internal　or　closed　user　group.　Intranets　are　company(61)and　do　not　have　a(62)connection　to　the　Internet.　Used　properly　an　Intranet　is　highly　effective　corporate　tool,　capable　of　regularly(63)information　to　empower　the　workforce　with　the　information　needed　to　perform.　their　roles.　Used　in　this　way,　an　Intranet　represents　a　step　towards　the(64)office.

60（）

A．simple

B．simply

C．single

D．singly

试述兆欧表的工作原理？