The accomplishment of this thesis has covered half a year,s experiment and another halfa years analysis. It can not be denied that whole process is quite tough. Despite all theproblems during research and limitations, the thesis finally comes into being. However, thiscan not be achieved without the help of many people.
First and foremost, I would like to give my sincere gratitude to my distinguished andrespectable supervisor, Prof. Qi Yuanfang, for his all-along supports during not only theresearch process, but the whole post-graduate year. He is the one who gives me inspiration ofthe thesis topic, enlightens me empirical method helps me conduct teaching experiment, andinstructs me analyzing approaches. I have to say that this thesis is born from his and warm encouragement.
Secondly, I also own my appreciation to Prof, Gongrong who gives me a lot ofinspiration, insightful advice and instructions.
And also, this thesis can not be accomplished without teachers of Foreign LanguagesSchool who impart knowledge to me and classmates who offer me help.
Last but not least, I would like to extend my thanks to the students participating in thisresearch for their patient corporation.
1．听说法在商务英语教学中的流程
听说法在商务英语教学中的有五个阶段，分别为：
(1)认识(rec0gniti0n)阶段：教师通过直观手段或上下文、情景等手段向学生发出语言信号(主要是句型)，表明语言信号所表达的意思，让学生把信号和它所表示的意思联系起来，即“听音会意”。
(2)模仿(imitati0n)阶段：让学生通过仿说一纠错一再仿说，同时记忆。
(3)重复(repetiti0n)阶段：让学生重现通过模仿已经记住的语言材料，作各种记忆性练习，一直到能正确理解和背诵为止。
(4)变换(variati0n)阶段：为了培养学生活用语言的能力，作各种不同的'变换句子结构的练习。如，替换(substituti0n)、转换(c0n—versi0n)、扩展(expansi0n)等操练活动。
（5)选择(s日ecti0n)阶段：让学生从已学的语言材料中选用某些词汇、成语和句型，描述特定的场面或事件。即综合运用，进一步培养学生把学过的语言材料运用于实践的能力。
2．听说法在商务英语教学中的重要性
商务英语教学与普通英语教学一样，包含听、说、读、写四步骤。在整个过程中，听说被放在了首位，由此可见听说的重要性。在大力倡导素质教育的今天，笔头能力的高低不能确切的说明英语知识掌握的多少，究竟听到了多少，能讲多少英语才是评定英语能力最重要的指标。而听说法或口语法是以掌握口语为目的的教学法体系。
其语言理论基础是结构主义语言学“语言是言语，不是文字”的理论，以口语为中心，以句型或结构为纲是听说教学法的主张。听说法把语言结构分析的研究成果运用到外语教学中，使教材的编写和教学过程的安排具有科学的依据。教材用会话形式表述，强调模仿、强记固定短语并大量重复，极其重视语音的正确，尤其强调语调训练，广泛利用对比法、并在教学中有针对性地加以解决。这对提高外语教学的效果，加速外语教学的过程无疑是非常重要的贡献和进步。
1. Evaluation of the quality of the paper, in the discipline or national economic construction on the value or theoretical significance
In recent years, the rapid development of animal husbandry in China, the total output value of animal husbandry has reached 35% of total agricultural output value, animal husbandry in China's agricultural production structure, the proportion is growing. Vitamin D is an essential nutrient for livestock and poultry, and plays an important role in promoting animal calcium, phosphorus absorption, egg shell formation and bone development. At present for the aquaculture industry, livestock and poultry vitamin D supplementation, mainly through the dietary or drinking water to add micron-grade vitamin D3, vitamin D3 is a fat-soluble vitamins, direct absorption absorption rate is relatively low, biology Titer is not high, with the development of nanotechnology in recent years, nanomaterials gradually being recognized and accepted. Some studies have shown that the use of nanotechnology can change the water-soluble vitamin-soluble vitamins, improve the bioavailability of vitamins. At the same time, through the fat-soluble vitamin D3 nano-can also improve the compatibility between the vitamin and feed processing. So far, the study of vitamin nano-focus mainly in the compound nano-vitamins, complex nano-vitamins as a complex, additive effect is difficult to explain clearly. To date, no studies have been conducted on the production of single fat-soluble vitamins in poultry production. This experiment was designed for the above reasons. The aim of this study is to evaluate the biological potency of nanovitamin D3 with the reference of ordinary vitamin D3, and to provide theoretical basis for its industrial production and practical application of animal husbandry.
2. Point out the innovation of the paper or innovation
(1) The application of solid nano-VD3 in laying hens was studied for the first time.
(2) In this study, based on the study of the effects of laying hens on performance, egg quality and tibia development, the dietary supplementation of nano-VD3 was determined to further optimize the calcium and phosphorus metabolism, to obtain the best health level and maximum potential performance. , The expected results for the scientific feeding layer, effectively guarantee the healthy growth of laying hens provides a new idea, with high application value.
(3) By comparing the advantages of nano-VD3 compared with conventional vitamin VD3 in breeding.
(4) the preparation of vitamin nanoparticles for the use of laying hens to study whether to improve the utilization of VD3
3. My research ability
During the graduate, actively participate in academic exchange activities, strictly follow the scientific rigorous study and research attitude, seek truth from facts, earnestly study, and continuously improve the scientific research ability. According to the guidance of instructors, read a lot of literature, and gradually clear the research direction, to determine their own research topics. In the experimental research stage, in strict accordance with the experimental program for research, can be used flexibly to solve the problems encountered in the trial, and constantly improve their ability to solve problems. Through their own continuous efforts, as well as with teachers and students to explore the exchange, so that their access to literature, comprehensive analysis of the basic quality of continuous improvement, the ability to express written temper has also been temper, especially independent thinking and research ability, Great progress, published during the student-related academic papers and independent completion of the thesis.
4. The main shortcomings of the paper
(1) In this study, the effect of adding vitamin D3 and vitamin D3 on the related indexes of laying hens was studied. It is necessary to further study whether the test animals have the same additive effect on other animals.
(2) The levels of vitamin D3 and vitamin D3 were 100 300 900 2700IU / kg, respectively. The proportion of vitamin D3 in the layers was 900-2700 IU / kg according to the method of equal ratio. In the actual production, The level of some large, should be further designed gradient test of different concentrations to explore the vitamin D3 in the diet the most appropriate level of added.
This thesis would not have been possible without constructive advice and helpfrom many persons.
First and foremost, I wish to express my sincere gratitude to my supervisor inChina Foreign Affairs University, Professor Ran Jijun, for his great advice andguidance on the content and format of this thesis, which is critical for revision.
Without his academic guidance, I could not have accomplished this thesis.
I would like to express my appreciation to all my teachers in the EnglishDepartment of China Foreign Affairs University, especially to Professor He Yinghong,Professor Guo Liqiu, Professor Sun Jisheng, Professor Zhang Lei, Professor SongAiqun, Professor Wei Lamei and Professor He Qun for everything I have learned fromthem during the two years at this university.
Also, the emotional support from my parents and my husband is no less importantthan the academic assistance.
In the end, I would like to express my thanks to my colleagues who helped collectuseful reference books and materials for me.
选择一个恰如其分的、适当的题目，才可以保证写作的顺利进行。何为适当呢?一是难易要适当。选题时一定要量力而行,充分考虑所选方向与自己的知识结构、技能结构、素质结构及写作经验的_匹配度_，尽量避免一些明显超过自己能力水平的问题。比如从英语文学选题的，应尽量从外国文学研究和比较文学研究方向切入，避开文学批评理论研究方向，因为该理论知识的学习仍处在英语专业研究生阶段;从翻译学选题的，应尽量选取翻译活动研究方向，因为翻译活动可以是对一种语言现象的翻译、或一种修辞格的翻译的研究，相对适合本科生的水平，而翻译理论等方向则难度相对较高。
I would like to extend my deep gratitude to all those who have offered mepractical, cordial and selfless support in writing this thesis.
Firstly, I am extremely grateful to my supervisor, Prof. Wang Baorong. He guidesme, influences me and helps me in the process of writing this thesis. It is with hispatience, generosity, and encouragement that I finally write, revise and perfect mythesis.
Secondly, I am much obliged to all teachers who ever taught me during the yearsof my postgraduate studies, esp. Prof. Li Changbao, associate Prof. Shao Youxue,associate Prof. Ceng Qunxia, associate Prof. Chen Xianghong and associate Prof.
Teng Chao. It is these distinguished professors who give me the opportunity to walkinto the academic world. To study with them will always be an honor for me and theirinstructions will follow me in my future studies.
Thirdly, my dear friend, Bao Yizong, who has worked in the audio-visual fieldfor more than three years, has also offered me great help. Based on his real experience,I can really catch a glimpse of the subtitling process and subtitlers workingenvironment, which paves way for an accurate and pragmatic study of Red SorghumsEnglish subtitles.
Lastly, I also want to thank my family members, esp. my wife and my lovelydaughter. It is their understanding and patience that make this thesis possible.
Through four years of the door to survive, I grew a lot. At the time of my graduation, I made a summary of my four years of experience and feelings, and as a guide to my future initiatives. Mind, I seek to move forward, the mind has made great progress in consciousness. I love the country, love the people, decisively attached to the leadership of the Communist Party and the socialist system. I think the price of a person by his society for others to do the honor to measure, I participate in the cause of the Chinese Communist Party is to actively achieve their own costs. I earnestly studied all kinds of theories of the Party and actively paid them to practice to have a clearer understanding of the Party.
Learning, I think the door to the important task of students or learn cultural knowledge, so I learn in the sense, not to relax. I think that a good learning method to learn very good knowledge, so in each test, I sum up a city learning experience. But to deal with our computer-related professional disciples, the optical optical good books on the knowledge is far from enough. I often use the spare time to read the computer class books, and participated in a number of computer degree of qualification tests, successfully obtained xxx certificate, xxx certificate, xxx certificate. I kept looking for the sublimation of character, pay attention to their own conduct, to independent thinking as their motto, when not forgetting. With the progress of learning, I not only learned the mass foundation of knowledge and a lot of professional knowledge, my mind has a qualitative Pentium, a faster grasp of a new skill knowledge, I think this is very tense for the as the Department of Health students will campaign, the yard structure of the speech contest, arts and cultural festival of the arts show, English speech contest. In the process of participating in these activities, I make friends with some good friends, learned the manners of doing things, to cultivate their own skills.
Social practice has made great progress. Four years in college, I participated in a lot of school activities and did some social tutors, volunteers, dumping and planners, and occasionally feel tired, but increased with other students to exchange and to learn from their opportunities, to develop their own communication skills, learn the strengths of others, Clear the drawbacks of their own, let the door to survive more colorful.
First and foremost, I would like to express my heartfelt gratitude to mysupervisor, Professor Jia Aiwu. I have benefited tremendously from her criticalthinking and insightful viewpoint. Through his patient instruction,I finally focusedon the object studied in this thesis, and obtained valuable advice on aspects rangingfrom frame work constructing and data collection to elaborated analysis.
Secondly, Im profusely grateful to my respected predecessors and teachers.
Without their precious suggestions, I could not have come this far in this thesis.
Moreover, I owe my thanks to my family and friends, who have always supportedme with their generous encouragements and praises.
Last but not least, I sincerely thank my fellow classmates. We share joys andanxieties, which propels us forward together throughout the arduous journey.
