WebSQL is a SQL-like （71） language for extracting information from the web. Its
capabilities for performing navigation of web （72） make it a useful tool for automating
several web-related tasks that require the systematic processing of either all the links in a
（73） , all the pages that can be reached from a given URL through （74） that match a
pattern, or a combination of both. WebSQL also provides transparent access to index servers that
can be queried via the Common （75） Interface.
（71）A. query B. transaction C. communication D. programming
（72）A. browsers B. servers C. hypertexts D. clients
（73）A. hypertext B. page C. protocol D. operation
（74）A. paths B. chips C. tools D. directories
（75）A. Router B. Device C. Computer D. Gateway