●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 t

●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