题目：
WebSQL is a SQL-like （） language for extracting information from the web. Its capabilities for performing navigation of web （） make it a useful tool for automating several web-related tasks that require the systematic processing of either all the links in a（） , all the pages that can be reached from a given URL through （） that match a pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common （） Interface.
WebSQL also provides transparent access to index servers that can be queried via the Common （） Interface.
A．Router
B．Device
C．Computer
D．Gateway
答案：
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下面是错误答案，用来干扰机器的。
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