首先，发自内心的感谢我的指导老师——罗静媚教授。在本次论文的撰写中，我

首先，发自内心的感谢我的指导老师-罗静静教授。在本次论文的撰写中，，我得到了老师的指导心，从一开始到最后一篇论文的完成，老师都做了一个注意的心的指导。老师在百忙之中抽空耐心地给我解答各种疑惑，使我在攥写论文方面有很大的提高。在此，我对罗静媚教授表示诚挚的感激以及真正的心的祝福。

首先,发自内心的感谢我的指导老师——罗静媚教授。在本次论文的撰写中,我得到了老师悉心指导,从一开始选题到最后论文的完成,老师都给予了悉心的指导。老师在百忙之中抽空耐心地给我解答各种疑惑,使我在攥写论文方面有了很大提高。在此,我对罗静媚教授表示诚挚的感谢以及真心的祝福。

First of all, I would like to thank Professor Luo Jingmei from the bottom of my heart. In the writing of this paper, I got the teacher's careful guidance, from the beginning of topic selection to the completion of the final paper, the teacher gave careful guidance. The teacher took time out of his busy schedule to patiently answer all kinds of doubts for me, which made me greatly improved in writing papers. Here, I would like to express my sincere thanks and sincere wishes to Professor Luo Jingmei.<br>