It was quite difficult to understand what you need. Anyway, I've got it. I guess you need to much all the terms to each sentence. So I think I've done it right. Check it out:
1.an electronic index of books - B. computer catalog
2.a device which categorizes and locates web sites - H. search engine
3.to draw a conclusion - D. infer
4.a block of information stored in an HTML file on a server - A. web page
5.the table of contents of a web site - G. home page
6.a software package which retrieves information from any or all available Internet servers - I. browser
7.a highlighted word or phrase within a web page which acts as a "bridge" to another web page or site - F. hyperlink
8.a topic sentence - C. key sentence
9.a term which aids in narrowing a web search - E. keyword
