(66) is a collection of web pages connected together with (67) .Each document or page has a unique address that allows you to find it among the millions of other documents on the WeB、The address is called a (68) (URL) or sometimes a Uniform Resource Indicator (URL). When you chose a new link by clicking on it or by typing it into the address field your (69) sends a request for that document and displays it on the screen. That link can be to a different section of the current document, another document on the same website as the original or on another website anywhere in the worlD、Web pages are designed using (70) or HTML.