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.

all the pages that can be reached from a given URL through （） that match a pattern, or a combination of both.

A．paths

B．chips

C．tools

D．directories

2020年我国3G/LTE用户普及率达到（）

A、85%

B、60%

C、40%

D、95%