问题
选择题
IP addresses are the unique sequence of numbers ______ to each computer, websites or other Internet-connected devices.
A．to assign
B．assigning
C．assigned
D．being assigned
答案
答案：C
题目分析：考查非谓语动词。numbers和assign是动宾关系，用过去分词表示被动、完成；相当于定语从句which are assigned to...。句意：IP地址是分配给每台电脑、网站或其它互联网装置的一串特殊的数字。故选C。