| Acknowledgments | 第4-5页 |
| 摘要 | 第5-6页 |
| Abstract | 第6-7页 |
| Chapter 1 Introduction | 第10-13页 |
| 1.1 Background of the research | 第10-11页 |
| 1.2 Significance of the research | 第11-12页 |
| 1.3 Organization of the thesis | 第12-13页 |
| Chapter 2 Literature Review | 第13-41页 |
| 2.1 Theoretical bases | 第13-36页 |
| 2.1.1 Definition of task | 第13-17页 |
| 2.1.2 Task difficulty | 第17-26页 |
| 2.1.3 Code complexity | 第26-32页 |
| 2.1.4 Models of reading process | 第32-36页 |
| 2.2 Review of related studies | 第36-41页 |
| 2.2.1 Impact of learners’lexical knowledge on reading performance | 第36-38页 |
| 2.2.2 Impact of learners’syntactic knowledge on reading performance | 第38-39页 |
| 2.2.3 Impact of texts’complexity on reading performance | 第39-40页 |
| 2.2.4 Summary | 第40-41页 |
| Chapter 3 Research Design | 第41-46页 |
| 3.1 Research questions | 第41页 |
| 3.2 Instruments | 第41-44页 |
| 3.2.1 Reading tests | 第41-42页 |
| 3.2.2 Questionnaire | 第42-44页 |
| 3.3 Subjects | 第44页 |
| 3.4 Procedures for data collection | 第44-46页 |
| Chapter 4 Results and Discussion | 第46-59页 |
| 4.1 Comparison of the results of three versions of reading tasks | 第46-48页 |
| 4.1.1 Results obtained from the comparison | 第46-47页 |
| 4.1.2 Analysis of the results | 第47-48页 |
| 4.2 Comparison of the answers to the questionnaire | 第48-59页 |
| 4.2.1 Readers’perception on the general difficulty of the reading tasks | 第48-50页 |
| 4.2.2 The greatest obstacle to reading comprehension | 第50-51页 |
| 4.2.3 The difficulty in words | 第51页 |
| 4.2.4 The difficulty in sentences | 第51-53页 |
| 4.2.5 The comprehension of each word or sentence in texts | 第53-54页 |
| 4.2.6 Subjects’strategies to deal with difficult words | 第54-55页 |
| 4.2.7 Subjects’strategies to deal with difficult sentences | 第55-57页 |
| 4.2.8 The improvements needed to enhance the subjects’reading abilities | 第57-58页 |
| 4.2.9 Summary of the information from the questionnaire | 第58-59页 |
| Chapter 5 Conclusion and Implications | 第59-65页 |
| 5.1 Conclusion | 第59-60页 |
| 5.2 Implications | 第60-62页 |
| 5.2.1 Implication for reading task design and application | 第60-61页 |
| 5.2.2 Implication for teaching reading | 第61-62页 |
| 5.3 Limitation of this research and recommendation for further study | 第62-65页 |
| Bibliography | 第65-68页 |
| Appendix ⅠOriginal Version of Reading Tasks | 第68-76页 |
| Appendix Ⅱ Lexically Modified Version of Reading Tasks | 第76-84页 |
| Appendix Ⅲ Syntactically Modified Version of Reading Tasks | 第84-92页 |
| Appendix Ⅳ Questionnaire | 第92-94页 |
| Appendix Ⅴ A Frequency List of Original Words and Their Corresponding Words | 第94-96页 |
| 攻硕期间取得的研究成果 | 第96-97页 |
| 个人简介 | 第97-98页 |
