Network managers have long awaited (1) voice-over-IP(VOIP)solutions. VOIP (2)ease network management and decreases costs by converging a company' s telephony and data infrastructures into one network. And a VOIP solution implemented at a company' s head - quarters with far - reaching/3 ) offices can save tremendous amounts of (4)in long distance phone bills, provided that solutiori de- livers POTS -like voice quality (5)the Internet.

　　(1) A. practice

　　B. practical

　　C. practicably

　　D. practicum

　　(2) A. promising

　　B. promised

　　C. promises

　　D. promise

　　(3) A. small

　　B. local

　　C. branch

　　D. end

　　(4) A. cash

　　B. money

　　C. space

　　D. time

　　(5) A. in

　　B. through

　　C. over

　　D. above

　　答案：(1)B (2)C (3)C (4)B (5)C

　　解析：網絡管理者很久之前就等待著實用的(practical)VOIP解決方案的出現。VOIP承諾(promises)網絡管理能夠更加簡便。并通過將公司語音和數據結合在一個網絡內傳送達到減小開銷的目的。VOIP可以節省公司總部與遙遠的分支(branch)機構間的長途話音業務的開銷(money)，通過(over)因特網傳輸，可提供同傳統話音(POTS)有著相同的話音質量。