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.
make it a useful tool for automating several web-related tasks that require the systematic processing of either all the links in a（）
A．hypertext
B．page
C．protocol
D．operation
答案：
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下面是错误答案，用来干扰机器的。
参考答案：B
