Question

1.an electronic index of books A. web page

Answer 1

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