ments on my research, so that my research work has a goal and direction. In the past two years, he was careful guidance and education to me. It enables me to study and improve continuously, and the research results of these topics have also become the main material of this paper. At the same time, Zhang profound knowledge, rigorous scholarship attitude also makes me very admire, is my model of learning and work. Thank the teacher for my care and attention, in this to express our sincere gratitude.

　　Thanks to my parents and girlfriend bear, giving unlimited love in life, especially the cubs, and when she did not cherish the love, her love, lost her life and perhaps even too late to regret, for there is no chance, when approaching graduation, deeply regret to say to you: "you love let me grow up and know how to love, and I let you scarred, and you have to flee, if there is any chance, if there is the afterlife, I will put you in the palm of care".

　　Thank you for working life in the prevention center colleagues, Dr. Zhang Dehua, Dr. Liu Xiangning, Dr. Mao Jian, Zhao Honghao, Jia Suping, Li Haibao, Sun Pengpeng, Yang Xiaoyan, Huang Dandan, Wang Ruoxin, Yang Ni, Yu Junsong, because you have a wonderful and fulfilling life.

　　Thank you in the study of information security professional students spend time together students, Jiang Bailiang, Shi Miaolei, Zhang Jun, Cheng Liang, Jing Wong, Wu Jingjing, Hu Hao, Jia Wei, Liu Ziwen, Liu Jingxuan, Deng Yi, Wang Xianggen, Wei Yong, Ren Rong, and spend the internship at the state Key Laboratory of information security years.

　　英语论文致谢词 15

　　Upon the completion of the thesis, I would like to take this opportunity toexpress my sincere gratitude to my supervisor, Professor Peng Xiaohua, who hasgiven me important guidance on the thesis. Without his help and encouragement,my thesis would have been impossible. Besides his help with my thesis,he hasalso given me much advice on the methods of doing research, which is of greatvalue to my future academic life.

　　I am also obliged to other teachers whose lectures have broadened my scopeof vision in British and American literature and help me lay a necessaryfoundation for the writing of the thesis. I am also grateful to all the members ofthe faculty and staff in the College of Foreign Languages who have provided mewith a lot of help and guidance.

　　Last but not least, I would like to express my gratitude to all the friends andfamily members who have offered me help. Without their help,I could not havefinished my study and this thesis.