| Acknowledgements | 第5-6页 |
| 中文摘要 | 第6-8页 |
| 英文摘要 | 第8-9页 |
| Chapter One Introduction | 第13-16页 |
| 1.1 Need for the Study | 第13-14页 |
| 1.2 Overview of the Study | 第14-16页 |
| Chapter Two Literature Review | 第16-39页 |
| 2.1 Research Background | 第16-19页 |
| 2.1.1 Development of listening comprehension models and theories | 第16-18页 |
| 2.1.2 Characteristics of news broadcasts | 第18-19页 |
| 2.2 Definition of Key Terms | 第19-24页 |
| 2.2.1 Textual characteristics | 第19-20页 |
| 2.2.2 Lexical complexity | 第20-21页 |
| 2.2.3 Syntactic complexity | 第21-22页 |
| 2.2.4 Discourse complexity | 第22-24页 |
| 2.3 Theoretical Backgrounds and Related Empirical Studies | 第24-37页 |
| 2.3.1 Lexical complexity | 第24-28页 |
| 2.3.2 Syntactic complexity | 第28-33页 |
| 2.3.3 Discourse complexity | 第33-34页 |
| 2.3.4 Other factors concerning listening comprehension | 第34-37页 |
| 2.4 Research Gaps | 第37-39页 |
| Chapter Three Methodology | 第39-49页 |
| 3.1 Participants | 第39-40页 |
| 3.2 Instruments | 第40-41页 |
| 3.2.1 News items | 第40页 |
| 3.2.2 Listening comprehension tasks | 第40页 |
| 3.2.3 Topic familiarity questionnaire | 第40-41页 |
| 3.3 Data Collection | 第41页 |
| 3.4 Data Analysis | 第41-49页 |
| 3.4.1 Checking of the listening comprehension tasks | 第41页 |
| 3.4.2 Coding of the textual characteristics of the news items | 第41-46页 |
| 3.4.3 Coding of other factors of the news items | 第46-49页 |
| Chapter Four Results and Discussion | 第49-74页 |
| 4.1 Textual Characteristics of the News Items in TEM-4 | 第49-55页 |
| 4.1.1 Lexical characteristics of the news items in TEM-4 | 第49-51页 |
| 4.1.2 Syntactic characteristics of the news items in TEM-4 | 第51-53页 |
| 4.1.3 Discourse characteristics of the news items in TEM-4 | 第53-55页 |
| 4.2 Textual Characteristics and Listening Comprehension | 第55-65页 |
| 4.2.1 Correlation between lexical complexity and listening comprehension | 第56-62页 |
| 4.2.2 Correlation between syntactic complexity and listening comprehension | 第62-63页 |
| 4.2.3 Correlation between discourse complexity and listening comprehension | 第63-65页 |
| 4.3 Other Factors Concerning Listening Comprehension | 第65-74页 |
| 4.3.1 Background knowledge and listening comprehension | 第66-70页 |
| 4.3.2 Question type and listening comprehension | 第70-74页 |
| Chapter Five Conclusion | 第74-77页 |
| 5.1 Major Findings | 第74-75页 |
| 5.1.1 Major findings on the textual characteristics of news broadcasts in TEM-4 | 第74-75页 |
| 5.1.2 Major findings on textual characteristics and listening comprehension | 第75页 |
| 5.1.3 Findings on other factors and listening comprehension | 第75页 |
| 5.2 Implications | 第75-76页 |
| 5.3 Limitations and Suggestions for Future Research | 第76-77页 |
| References | 第77-84页 |
| Appendices | 第84-100页 |
| Appendix Ⅰ | 第84-85页 |
| Appendix Ⅱ | 第85-93页 |
| Appendix Ⅲ | 第93-100页 |
