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.

Its capabilities for performing navigation of web （）

A．browsers

B．servers

C．hypertexts

D．clients

GBS典型的脑脊液改变是蛋白质含量增高，而细胞数正常，称为（）分离现象，为本病特点之一。蛋白质增高于起病后第（）周最明显。