People and issues – Text (A) Text study Background information Words and expressions Text Looking at the text Working with words Listening Listening 1 Listening 2 Listening 3 Personal view – Text (B) Text study Background information Words and expressions Text Looking at the text Working with words Listening 4 Listening 5 Listening Speaking
安徽理工大学：《网络与信息安全 Network and Information Security》课程教学资源（PPT课件讲稿）Part 1 Introduction to Network & Information Security Section 1-3 the objectives of network and info security
Relevance Ranking Using Terms Relevance Using Hyperlinks Synonyms., Homonyms, and Ontologies Indexing of Documents Measuring Retrieval Effectiveness Web Search Engines Information Retrieval and Structured Data Directories
