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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

C

解析试题分析: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。
考点:考查非谓语动词

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