众文网1.谁帮我写一篇3000字的英语毕业论文
I. Review of the Work of the Past Five Years The past five years since the First Session of the Tenth National People's Congress was a momentous period. Under the leadership of the Communist Party of China (CPC), governments at all levels and people of all the ethnic groups in China diligently followed the guiding principles set out at the Sixteenth CPC National Congress and worked in concert and with dedication. We vigorously responded to the complex and volatile international environment, strove to overcome various difficulties hindering economic and social development, and prevailed over the sudden and severe outbreak of SARS and catastrophic natural disasters such as the recent snow and ice storms in the south that the region has rarely seen before. We made major achievements in reform, opening up and modernization, which attracted the attention of the world. – The economy reached a new high. China's GDP in 2007 reached 24.66 trillion yuan, an increase of 65.5% over 2002 and an average annual increase of 10.6%, rising from the sixth highest one in the world to the fourth. Total government revenue reached 5.13 trillion yuan, a 171% increase over 2002. Our – The agricultural tax was rescinded, ending the centuries-old practice of farmers paying taxes. China's grain output rose four consecutive years to reach 501.5 million tons in 2007. – Major progress was made in the reform of state-owned enterprises (SOEs), the financial system, fiscal and taxation systems, the system of foreign trade and economic cooperation, and the administrative system. China has entered a new stage in developing a more open economy. Total volume of imports and exports reached $2.17 trillion in 2007, raising China from the sixth largest trading nation in the world to the third largest.。
2.全英语论文3000字
Published in 1847, WUTHERING HEIGHTS was not well received by the reading public, many of whom condemned it as sordid, vulgar, and unnatural--and author Emily Bronte went to her grave in 1848 believing that her only novel was a failure. It was not until 1850, when WUTHERING HEIGHTS received a second printing with an introduction by Emily's sister Charlotte, that it attracted a wide readership. And from that point the reputation of the book has never looked back. Today it is widely recognized as one of the great novels of English literature. Even so, WUTHERING HEIGHTS continues to divide readers. It is not a pretty love story; rather, it is swirling tale of largely unlikeable people caught up in obsessive love that turns to dark madness. It is cruel, violent, dark and brooding, and many people find it extremely unpleasant. And yet--it possesses a grandeur of language and design, a sense of tremendous pity and great loss that sets it apart from virtually every other novel written. The novel is told in the form of an extended flashback. After a visit to his strange landlord, a newcomer to the area desires to know the history of the family--which he receives from Nelly Deans, a servant who introduces us to the Earnshaw family who once resided in the house known as Wuthering Heights. It was once a cheerful place, but Old Earnshaw adopted a "Gipsy" child who he named Heathcliff. And Catherine, daughter of the house, found in him the perfect companion: wild, rude, and as proud and cruel as she. But although Catherine loves him, even recognizes him as her soulmate, she cannot lower herself to marry so far below her social station. She instead marries another, and in so doing sets in motion an obsession that will destroy them all. WUTHERING HEIGHTS is a bit difficult to "get into;" the opening chapters are so dark in their portrait of the end result of this obsessive love that they are somewhat off-putting. But they feed into the flow of the work in a remarkable way, setting the stage for one of the most remarkable structures in all of literature, a story that circles upon itself in a series of repetitions as it plays out across two generations. Catherine and Heathcliff are equally remarkable, both vicious and cruel, and yet never able to shed their impossible love no matter how brutally one may wound the other. As the novel coils further into alcoholism, seduction, and one of the most elaborately imagined plans of revenge it gathers into a ghostly tone: Heathcliff, driven to madness by a woman who is not there but who seems reflected in every part of his world--dragging her corpse from the grave, hearing her calling to him from the moors, escalating his brutality not for the sake of brutality but so that her memory will never fade, so that she may never leave his mind until death itself. Yes, this is madness, insanity, and there is no peace this side of the grave or even beyond. Many people in the world are trying to find a perfect companion.Some of these may marry and not know what their new husband or wife is like.This kind of situation often leads to separation or hostility. Other situations may develop between two friends that stem from jealousy, desire for revenge, uncaring parents, etc. Emily Brontë's Wuthering Heights displays several characteristics of destructive relationships. Three of these are uncaring parents, marriage without knowing the person, and jealousy. Uncaring or unsympathizing parents are shown throughout this story to be an element of destructive relationships. Because Heathcliff gained all the attention from Mr. Earnshaw, Hindley became disassociated from his father. This separation continued until after Mr. Earnshaw had died.Another example is between Hindley and Hareton. Hindley became such a drunk and a gambler that he could not properly care for young Hareton. This led to a separation between Hareton and his father as well. One primary example of an uncaring parent is shown between Heathcliff and his son Linton.Heathcliff did not even want his son for anything except enacting a part of his revenge. This is shown by Linton's fear of Heathcliff and Heathcliff's enmity toward his son. Linton even says "。
my father threatened me, and I dread him - I dread him!"(244) to express his feeling about Heathcliff.The hostility and separation between father and son in this book shows that uncaring parents can cause serious damage in relationships with their children. This element of destructive behavior may stem from an unhappy marriage in which the husbands or wives don't know each other. This had happened between Isabella and Heathcliff. Isabella did not really 。
3.一篇不少于3000字的建筑方面英语论文翻译（最好直接给）
In the 20th century, bridge construction technology evolved and was fueled by the Industrial Revolution. At the turn of the century, steel bridges were riveted together, not bolted; concrete bridges were cast in place, not precast; and large bridge members were built from lacing bars and smaller sections, not rolled in one piece. Plastic had not yet been invented. Construction techniques such as post-tensioning, slurry walls, soil freezing, and reinforced earth walls had not yet been conceived. Surveying was performed mechanically since infrared, optical technology was still 75 years away. Bridge construction is changing as the new millennium begins. New construction techniques and new materials are emerging. There are also new issues facing the bridge building industry relative to the research needs associated with these new techniques and materials. LONG-SPAN BRIDGES Suspension Bridges While suspension bridge building was conducted at a modest pace throughout the 20th century, an unprecedented number of spans of remarkable record lengths were built in the Far East and Denmark. Both the Akashi Kaikyo Bridge in Japan and the Great Belt Bridge in Denmark were completed in 1998. The Akashi Kaikyo Bridge is the largest suspension bridge in the world, with a span of 1991 m, and the Great Belt Bridge is the second largest, with a span of 1624 m. While spans lengths have increased nearly fivefold during the course of this century, they may have reached their physical limits with today's materials. Research will be necessary to develop the new, ultra-high-strength steel wire or carbon fiber wire required to build the longer main suspension cables that will make it possible to increase span lengths to beyond 2000 m. As we enter the new millennium, rehabilitation and ongoing maintenance of the existing suspension bridges must continue as well. Recent rehabilitation measures for the main cables and suspension systems of these bridges have uncovered degradation through corrosion and hydrogen embrittlement. Research is needed to determine the remaining useful service life of suspension bridge cables and what measures can be taken to slow or halt the degradation process. Transportation in the New Millennium 2 Other components of long-span bridges, existing and new, are being revolutionized as technology moves forward. Advances in deck technology are producing stronger, lighter decks. Orthotropic and exodermic decks are becoming increasingly popular on long-span structures as a means of reducing dead load. Bearings, joint systems, and seismic retrofitting components are becoming increasingly efficient as more large-scale testing facilities are built. 在20世纪，桥梁施工技术，是由进化而来的 工业革命。
随着新世纪的到来，钢桥受到铆接在一起，而不是 螺栓、混凝土桥梁被扔在的地方，不是预制、大型桥梁成员 从系酒吧和小的部分，不卷在一块。塑料尚未 发明了。
制作等施工工艺、浆墙、土壤冻结， 加筋土墙尚未怀了孕。测量进行机械 自从红外、光学技术仍然是75年。
大桥建设是新千年开始转变。新建筑 技术和新材料正在浮出水面。
也有新的解决面临的桥 建筑行业的相关研究的需要，这些新技术 材料。 大跨度桥梁 悬挂的桥梁 虽然悬索桥建设进行了整个20速度不快 世纪，前所未有的跨越了卓越的长度是建在记录 远东和丹麦。
双方在日本明石海峡大桥正式通车，伟大的带桥 在丹麦是在一九九八年完成。这个明石海峡大桥正式通车是世界上最大的悬架 在这个世界上，与桥梁的m,1991年是中国的第二大带桥， 用一段1624）。
虽然已经增加了近5倍长度的跨世纪的过程中， 他们已经达到了他们的物理极限与今天的材料。研究将 必须发展新的、ultra-high-strength钢丝、碳纤维丝要求 建立了悬索，将不再主要可能增加到跨度的长度 超出2000米。
当我们进入新千年、康复和持续的维护现有的 悬索桥必须继续。最近的戒毒措施为主要 电缆悬架系统与这些桥梁发现退化 氢脆腐蚀，。
研究还剩下的 寿命悬索桥电缆和什么措施可以减缓或 停止退化的过程。 在新千年的运输 其他组件的大跨度桥梁，现有的和新的，正在发生了革命性的变化 技术的进步。
提出了在甲板上技术生产强的，更轻的 甲板。正交各向异性和exodermic牌是大跨度越来越受欢迎 作为一种手段，降低结构自重荷载。
轴承、联合系统和抗震能力 越来越多的有效成分是更大规模的测试设备 建造。 50分！！~~谢谢 参考资料：我的大脑。
4.2500~3000字英语小论文
In 2002 will be implemented in three 10 X college entrance examination system. College entrance examination system in the reform of English teaching reforms. The key lies in establishing the class-based teaching system (1) listening and speaking. Against the status quo of poor listening and speaking ability of students to open every Monday of English listening and speaking sections. Use the latest teaching listening "to the future", "traveled the United States," "expect English," and other tapes, video tapes and newspapers, using advanced listening equipment in the classroom teaching through listening, speaking, dialogue, performances, lectures and other lively, interesting students heard about the form of training to improve the communication skills of students, training students in the level of oral expression, reversing the pre-existing "dumb-style" English teaching status quo. (2) the addition of extensive reading classes, the establishment of Foreign Language Reading Room. Although the new textbooks to read the current increased, but far from what is needed. In order to expand the scope of the students exposure to English, optional printing a variety of genres, subjects suitable for students to read the article. According to the requirements of content and reading test, teachers will be articles to classify each article in the post-coupled with an appropriate amount of reading comprehension questions. In order to broaden the teaching of English extension, so that extensive reading in English from the curricular and extra-curricular extension to the establishment of foreign language reading acquisition have been published in a variety of domestic suitable for high school students to read English books, will be in English Extensive Reading from the classroom extended to Yuelan Shi to further stimulate students interest in reading and initiative. Subscribe for students in English newspapers and magazines, the establishment of English specialty health system, at any time to give them an open reading rooms and study rooms. Teaching through extensive reading, students can not only consolidate the textbooks and the basics, but also can improve the self-learning ability to develop intelligence, reading to be fun. (3) The creation of writing classes. Poor writing skills for students in English and Chinese-style English sentences in the written expression of uncommon situation, the school can fully use my existing computer software, according to the new textbooks written request, step by step training on the students writing. "English written expression and training", will be Practical, descriptive text, description text and carry out the purpose of discussion, sub-level guidance training. Writing Course opened for the entrance examination is not merely to prepare for the written expression, but also enable students to learn a variety of English style of writing methods and techniques to meet the future requirements of the community of foreign language experts. (4) The implementation of the different levels of English teaching, the successful introduction of English classes and increase class. Students according to their actual English proficiency, the free selection of the successful lessons to enhance our lessons. School teachers to take a listing. The basis of less successful lessons where students can make up for deficiencies in knowledge and a good grasp of double-base implementation, to develop their own non-intellectual factors, promote the improvement of performance and enjoy the joy of success. The basis of good students can participate in improving the high level of English classes comprehensive training to promote their own standard of English to the "high, precision and advanced the" development and outline the task ahead of schedule to prepare for the contest. 2002年全国将实施3十X高考制度。
高考制度在改革，英语教学改革势在必行。 关键在于建立各课型教学体系 （1）听说课。
针对学生听说能力差的现状，开设每周一节次的英语听说课。选用最新听力教材“走向未来”，“走遍美国”，“希望英语”等录音带，录像带及报纸，利用先进的听音设备，在课堂教学中通过听，说，对话，表演，演讲等各种生动，有趣的形式对学生进行听说训练，提高学生的交际能力，训练学生的口语表达水平，扭转以前存在的“哑巴式”英语教学的现状。
（2）增设泛读课，建立外文阅览室。现行新教材尽管阅读量增加，但远远不能满足需要。
为了扩大学生对英语的接触范围，可选印各种体裁，题材适于学生阅读的文章。根据内容和阅读测试的要求，教师将文章进行分类，在每篇文章后配以适量的阅读理解题。
为了拓宽英语课堂教学的外延，使英语泛读由课。
5.2500~3000字英语小论文
In 2002 will be implemented in three 10 X college entrance examination system. College entrance examination system in the reform of English teaching reforms. The key lies in establishing the class-based teaching system (1) listening and speaking. Against the status quo of poor listening and speaking ability of students to open every Monday of English listening and speaking sections. Use the latest teaching listening "to the future", "traveled the United States," "expect English," and other tapes, video tapes and newspapers, using advanced listening equipment in the classroom teaching through listening, speaking, dialogue, performances, lectures and other lively, interesting students heard about the form of training to improve the communication skills of students, training students in the level of oral expression, reversing the pre-existing "dumb-style" English teaching status quo. (2) the addition of extensive reading classes, the establishment of Foreign Language Reading Room. Although the new textbooks to read the current increased, but far from what is needed. In order to expand the scope of the students exposure to English, optional printing a variety of genres, subjects suitable for students to read the article. According to the requirements of content and reading test, teachers will be articles to classify each article in the post-coupled with an appropriate amount of reading comprehension questions. In order to broaden the teaching of English extension, so that extensive reading in English from the curricular and extra-curricular extension to the establishment of foreign language reading acquisition have been published in a variety of domestic suitable for high school students to read English books, will be in English Extensive Reading from the classroom extended to Yuelan Shi to further stimulate students interest in reading and initiative. Subscribe for students in English newspapers and magazines, the establishment of English specialty health system, at any time to give them an open reading rooms and study rooms. Teaching through extensive reading, students can not only consolidate the textbooks and the basics, but also can improve the self-learning ability to develop intelligence, reading to be fun. (3) The creation of writing classes. Poor writing skills for students in English and Chinese-style English sentences in the written expression of uncommon situation, the school can fully use my existing computer software, according to the new textbooks written request, step by step training on the students writing. "English written expression and training", will be Practical, descriptive text, description text and carry out the purpose of discussion, sub-level guidance training. Writing Course opened for the entrance examination is not merely to prepare for the written expression, but also enable students to learn a variety of English style of writing methods and techniques to meet the future requirements of the community of foreign language experts. (4) The implementation of the different levels of English teaching, the successful introduction of English classes and increase class. Students according to their actual English proficiency, the free selection of the successful lessons to enhance our lessons. School teachers to take a listing. The basis of less successful lessons where students can make up for deficiencies in knowledge and a good grasp of double-base implementation, to develop their own non-intellectual factors, promote the improvement of performance and enjoy the joy of success. The basis of good students can participate in improving the high level of English classes comprehensive training to promote their own standard of English to the "high, precision and advanced the" development and outline the task ahead of schedule to prepare for the contest. 2002年全国将实施3十X高考制度。
高考制度在改革，英语教学改革势在必行。 关键在于建立各课型教学体系 （1）听说课。
针对学生听说能力差的现状，开设每周一节次的英语听说课。选用最新听力教材“走向未来”，“走遍美国”，“希望英语”等录音带，录像带及报纸，利用先进的听音设备，在课堂教学中通过听，说，对话，表演，演讲等各种生动，有趣的形式对学生进行听说训练，提高学生的交际能力，训练学生的口语表达水平，扭转以前存在的“哑巴式”英语教学的现状。
（2）增设泛读课，建立外文阅览室。现行新教材尽管阅读量增加，但远远不能满足需要。
为了扩大学生对英语的接触范围，可选印各种体裁，题材适于学生阅读的文章。根据内容和阅读测试的要求，教师将文章进行分类，在每篇文章后配以适量的阅读理解题。
为了拓宽英语课堂教学的外延，使英语泛读由课内延。
6.3000字的英语论文怎么写
从最基本的说起，其实和语文的议论文一样， 有introduction,body and conclusion。
Introduction- topic, point of view(optional),a breif introduction that the student will mention in the following paragraph (1st para of body).
Body- a thesis statement + supportive examples + a summary of the thesis(optional)
NB: one thesis (idea)/para.
Conclusion- rearrangement of introduction.
REMEMBER students have no idea! That's the whole idea of academic writing. Thus there is a very IMPORTANT tip you need to tell your students- REFERENCES. References need to appear in introduction,body and conclusion of the whole acticle.
Academic writings are usually expositive, hence you need tell your students to use passive languages. Active words are ONLY used in Creative Writing students.
7.求一篇英语论文3000字的,感谢各位帮忙,谢谢了
customer satisfaction Customer satisfaction is the customer-to-business and enterprise product / service satisfaction. Customer satisfaction, the enterprise is a state of feeling, and feelings in such a state more likely to arouse trading activities. A commonly used statistical results are: a satisfied customer, six times in a dissatisfied customers more willing to continue to buy that product or service enterprises. In an increasingly competitive, customer-oriented market environment, more and more companies began chasing the upgrading of customer satisfaction. However, many companies chasing the results were not satisfactory. We found that business if it is only the pursuit of customer satisfaction and often can not solve the ultimate problem, because very often, enterprises improve customer satisfaction, does not mean that corporate profits immediately improved. Only contributions to the company "profit" is a direct customer value customers. Moreover, the value of the profits of enterprises also contribute to the high and low points. Therefore, enterprises should operate on the scarce resources to optimize the allocation and concentrate on high-value enhancing customer satisfaction at the same time, we should also look at potential high-value customers, gradual increase their satisfaction. From all customer satisfaction, to the value of customer satisfaction, to the high-value customer satisfaction, the final key to the high-value customer satisfaction factors, it is enterprises to enhance the "customer satisfaction value in return," "process." Customer loyalty Customer loyalty from the concept of customer satisfaction leads to the concept of customer satisfaction is the result of a product brand or company's trust, and hope to maintain a repeat of psychological tendency. Customer loyalty is actually a continuity of customer behavior, customer loyalty, customer loyalty is the corporate level. Customer loyalty for the two forms of performance, is a corporate customer loyalty in the wishes of a customer loyalty is in the behaviour of enterprises. And general enterprises tend to be confused with two forms of this fact, a fundamental difference between the two, the former is not for the businesses themselves have a direct value of the enterprises while the latter is very valuable; The reason is very simple Customers only wishes, but no action, for enterprises of no significance. Enterprises should do is, first, to promote customers from "will" to "act" conversion; Second, through cross-selling and additional marketing to further enhance customer and business transactions frequency. Customer satisfaction does not mean that customer loyalty, customer satisfaction is a kind of psychological satisfaction, in consumption is revealed by the attitude of, but customer loyalty is a continuous transactions, is to promote the occurrence of repeat customers. Measuring customer loyalty is the key indicators of customers (CustomerRetention), which describes enterprises and maintaining customer relationships length of time; customers share (CustomerShare), namely, the budget will be spent on the company's ratio. Data show that only the customer satisfaction is not enough. When a better product suppliers, large customers may change suppliers. Satisfaction is measured by customer expectations and feelings, and customer loyalty reflect the purchase of future actions and purchase commitments. Customer satisfaction surveys customer purchase experience of the past views and ideas, can only reflect the past and not the future acts as a reliable forecast. Loyalty survey can predict what products customers want most, and when to buy, how many of these could have purchased sales. Customer satisfaction and their actual purchase behavior is not necessarily directly linked, satisfied customers may not be able to guarantee that they will always be faithful enterprises, a repeat purchase behavior. In a "worthless customer satisfaction, customer loyalty Extreme priceless" (Cus tomer Satis faction Is Worthles s, Cus tomer Loyalty Is Priceles s) of the "customer loyalty" of the best-selling book, the author debate: "Customers satisfied with the worthless, because satisfied customers still buy the products of other enterprises. process of the transaction are satisfied with every aspect of the customer will be better because of the price of a replacement suppliers, customers and sometimes even though your products and satisfied with the service is not absolute, you have been able to lock the customer. " For example, many users of Microsoft products such as the views and dissatisfaction, but if you change the use 。
8.全英语论文3000字
Published in 1847, WUTHERING HEIGHTS was not well received by the reading public, many of whom condemned it as sordid, vulgar, and unnatural--and author Emily Bronte went to her grave in 1848 believing that her only novel was a failure. It was not until 1850, when WUTHERING HEIGHTS received a second printing with an introduction by Emily's sister Charlotte, that it attracted a wide readership. And from that point the reputation of the book has never looked back. Today it is widely recognized as one of the great novels of English literature. Even so, WUTHERING HEIGHTS continues to divide readers. It is not a pretty love story; rather, it is swirling tale of largely unlikeable people caught up in obsessive love that turns to dark madness. It is cruel, violent, dark and brooding, and many people find it extremely unpleasant. And yet--it possesses a grandeur of language and design, a sense of tremendous pity and great loss that sets it apart from virtually every other novel written. The novel is told in the form of an extended flashback. After a visit to his strange landlord, a newcomer to the area desires to know the history of the family--which he receives from Nelly Deans, a servant who introduces us to the Earnshaw family who once resided in the house known as Wuthering Heights. It was once a cheerful place, but Old Earnshaw adopted a "Gipsy" child who he named Heathcliff. And Catherine, daughter of the house, found in him the perfect companion: wild, rude, and as proud and cruel as she. But although Catherine loves him, even recognizes him as her soulmate, she cannot lower herself to marry so far below her social station. She instead marries another, and in so doing sets in motion an obsession that will destroy them all. WUTHERING HEIGHTS is a bit difficult to "get into;" the opening chapters are so dark in their portrait of the end result of this obsessive love that they are somewhat off-putting. But they feed into the flow of the work in a remarkable way, setting the stage for one of the most remarkable structures in all of literature, a story that circles upon itself in a series of repetitions as it plays out across two generations. Catherine and Heathcliff are equally remarkable, both vicious and cruel, and yet never able to shed their impossible love no matter how brutally one may wound the other. As the novel coils further into alcoholism, seduction, and one of the most elaborately imagined plans of revenge it gathers into a ghostly tone: Heathcliff, driven to madness by a woman who is not there but who seems reflected in every part of his world--dragging her corpse from the grave, hearing her calling to him from the moors, escalating his brutality not for the sake of brutality but so that her memory will never fade, so that she may never leave his mind until death itself. Yes, this is madness, insanity, and there is no peace this side of the grave or even beyond. Many people in the world are trying to find a perfect companion.Some of these may marry and not know what their new husband or wife is like.This kind of situation often leads to separation or hostility. Other situations may develop between two friends that stem from jealousy, desire for revenge, uncaring parents, etc. Emily Brontë's Wuthering Heights displays several characteristics of destructive relationships. Three of these are uncaring parents, marriage without knowing the person, and jealousy. Uncaring or unsympathizing parents are shown throughout this story to be an element of destructive relationships. Because Heathcliff gained all the attention from Mr. Earnshaw, Hindley became disassociated from his father. This separation continued until after Mr. Earnshaw had died.Another example is between Hindley and Hareton. Hindley became such a drunk and a gambler that he could not properly care for young Hareton. This led to a separation between Hareton and his father as well. One primary example of an uncaring parent is shown between Heathcliff and his son Linton.Heathcliff did not even want his son for anything except enacting a part of his revenge. This is shown by Linton's fear of Heathcliff and Heathcliff's enmity toward his son. Linton even says "。
my father threatened me, and I dread him - I dread him!"(244) to express his feeling about Heathcliff.The hostility and separation between father and son in this book shows that uncaring parents can cause serious damage in relationships with their children. This element of destructive behavior may stem from an unhappy marriage in which the husbands or wives don't know each other. This had happened between Isabella and Heathcliff. Isabella did not really 。
9.悬赏100分,求一篇3000字的毕业论文英文文献
Adrenocortical and Adrenomedullary Homologs in Eight Species of Adult and Developing Teleosts: Morphology, Histology, and Immunohistochemistry Morphology, histology, and immunohistochemistry of the adrenocortical and adrenomedullary homologs (adrenal glands) of the following developing and adult teleosts were examined: Salmoniformes— mykiss (rainbow trout), Salmo trutta fario (brown trout), Coregonus lavaretus (white fish); Cyprinodontiformes—Gambusia affinis (mosquito fish). Perciformes—Dicentrarchus labrax (sea bass), Sparus aurata (sea bream), Diplodus sargus (white bream), Oblada melanura (saddled bream). The anatomical relationships of the gland with the renal system and venous vessels were also noted. In adults of all species steroidogenic and catecholaminergic chromaffin cells were found in the head kidney,which is pronephric in origin and subsequently transformed into a hematopoietic lymphatic organ. In Perciformes, chromaffin cells are distributed around the anterior and posterior cardinal veins and ducts of Cuvier; in Salmoniformes, around the posterior cardinal veins and in the hematopoietic tissue; and in G. affinis, around the ducts of Cuvier and posterior cardinal veins, while a few are visible also around the sinus venosus. In Perciformes and Salmoniformes, numerous chromaffin cells are also present in the posterior kidney, derived from the opisthonephros, in contact with the caudal vein. Steroidogenic cells are always confined to the head kidney. During development chromaffin and steroidogenic cells appear early after hatching in the pronephric kidney, at the level of the ducts of Cuvier and of the cephalic part of the posterior cardinal veins. Later, chromaffin cells in Perciformes reach the anterior cardinal veins, and subsequently, in both Perciformes and Salmoniformes, they reach the developing posterior kidney. Their localization along the posterior kidney is still in progress about 4 months after hatching and is completed about a year after hatching. These findings support the concept that the structure of the adrenal gland in teleosts is intermediate between that of the other actinopterygians and that of tetrapods. The development differs from that of tetrapods in that it occurs mainly in the pronephros and only later do chromaffin cells reach the opisthonephric kidney.。
10.3000字的英语论文怎么写
从最基本的说起，其实和语文的议论文一样， 有introduction,body and conclusion。
Introduction- topic, point of view(optional),a breif introduction that the student will mention in the following paragraph (1st para of body). Body- a thesis statement + supportive examples + a summary of the thesis(optional) NB: one thesis (idea)/para. Conclusion- rearrangement of introduction. REMEMBER students have no idea! That's the whole idea of academic writing. Thus there is a very IMPORTANT tip you need to tell your students- REFERENCES. References need to appear in introduction,body and conclusion of the whole acticle. Academic writings are usually expositive, hence you need tell your students to use passive languages. Active words are ONLY used in Creative Writing students。.。
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