专业英语作文 化学
Degradable Plastic Bags
The plastic material, is a high molecular weight organic matter as main component. Over the past few years plastics inspire countless innovations that help make life better, healthier and safer every day. For example, plastic bags help keep the foods we eat and serve our families safer and fresher than ever before. But it cause the white pollution. So June 1, 2008 started the implementation of the "plastic limit order" .To protect our environment, we should use more environmental plastic bags. The production of plastic bags added in the process of degradation masterbatch plastic bags that degradable plastic bags, degradable plastic bags for 90 days can automatically decompose in accord with certain conditions. To the plastic film bag as raw material for the production of plastic bags, we used plastic bags: the bag bag, shopping bags, handbags, handbags, bags, vest belt and industrial.
Some domestic "manufacturers of degradable plastic" method is mainly used in PVC, by adding a certain proportion of starch biodegradable agents, thus changing the hydrocarbon structure of PVC, by microorganisms and decomposition. Another approach is the incorporation of photosensitizer, in plastics, in the sunshine
under the plastic gradually decomposition. Or the "light" and "biological" combined with characteristics of degradation, photodegradation and biodegradation plastic. But the essence of the two methods is changed the structure of PVC molecular chain, simply, is through the biological degradation agent or photosensitizer, the molecular links between interrupted, not easy to larger molecules into small molecules is relatively easy decomposition, but the essence of PVC has not degradation did not change.
Our members are proud to manufacture materials that can help us to do more with less and contribute to a more efficient use of resources. These are just some of the ways plastics are helping to create a better planet and a safer world.That is to say chemistry affect daily of our society. Chemistry drives the development of science and technology,and mankind benefit from it.
我的梦想英语作文8篇完美版
《我的梦想英语作文》 我的梦想英语作文（一）： I have a wonderful dream in my heart。 It's to speak English very well。 Since English is everything for me。 English is my best friend。English is my soul。 English is my power。 Without English， I'm nothing at all。 Nothing。 Now， I can think in English， speak in English， and write in English。 Some people think I'm an Indian。 Some people regard I'm a Pakistan。 And some people even consider that I'm an Egyptian。But if I could speak English as good as an American， my future would be brilliant。 So I work very hard。 在我心中有一个美丽的梦想。那就是说一口流利的英语。因为对我来说英语就是我的一切。英语是我最好的朋友。英语是我的灵魂。英语给予我力量。没有英语，我什么都没有。什么都没有。此刻，我能够用英语的方式思考，用英语说话，用英语书写。有些人以为我是印第安人。有些人以为我是巴基斯坦人。有些人甚至认为我是埃及人。但如果我能说英语能像美国人说的那么好，我的未来会很完美。所以我很努力学习。 我的梦想英语作文（二）： 我的梦想 My Dream Different people have different dreams。 Some people dream of making a lot of money。 Some people dream of living a happy life。 Some people dream of being famous。 Some people dream of going abroad， and so on。But my dream is different。 Maybe you will get a surprise after you know my dream。 不一样的人有不一样的梦想。有些人梦想赚很多的钱。有些人梦想过上幸福的生活。有些人梦想能够出名。有些人梦想能够出国等等。但我的梦想是和他们不一样的。明白我的梦想后也许你会很惊讶。 我的梦想英语作文（三）： 我梦想的职业 My Dreaming Career In the past two years， my parents took me to travel to many places，including big cities， small towns， famous mountians and so on。 Therefore，I like traveling and I hope I can visit to many more places。 Since then，I hope I can be a tour guide in the future， so I can travel to many tourist attractions。 Besides， I can meet various people and I think municating with different people is interesting， wchich can broaden my field of
与贸易有关的投资措施协议(中英文对照)
AGREEMENT ON TRADE-RELATED INVESTMENT MEASURES Members, Considering that Ministers agreed in the Punta del Este Declaration that "Following an examination of the operation of GATT Articles related to the trade restrictive and distorting effects of investment measures, negotiations should elaborate, as appropriate, further provisions that may be necessary to avoid such adverse effects on trade"; Desiring to promote the expansion and progressive liberalisation of world trade and to facilitate investment across international frontiers so as to increase the economic growth of all trading partners, particularly developing country Members, while ensuring free competition; Taking into account the particular trade, development and financial needs of developing country Members, particularly those of the least-developed country Members; Recognizing that certain investment measures can cause trade-restrictive and distorting effects; Hereby agree as follows: 与贸易有关的投资措施协定 各成员， 考虑到部长们在《埃斯特角城宣言》中同意“在审查与投资措施的贸易限制作用和扭曲作用有关的GATT条款的运用情况之后，谈判应酌情详述为避免此类对贸易的不利影响而可能需要的进一步规定”； 期望促进世界贸易的扩大和逐步自由化，便利跨国投资，以便提高所有贸易伙伴、特别是发展中国家成员的经济增长，同时保证自由竞争； 考虑到发展中国家成员、特别是最不发达国家成员特殊的贸易、发展和财政需要； 认识到某些投资措施可能产生贸易限制作用和扭曲作用： 特此协议如下： Article 1 Coverage This Agreement applies to investment measures related to trade in goods only (referred to in this Agreement as "TRIMs"). 第1条 范围 本协定仅适用于与货物贸易有关的投资措施(本协定中称“TRIMs”)。 Article 2 National Treatment and Quantitative Restrictions 1. Without prejudice to other rights and obligations under GATT 1994, no Member shall apply any TRIM that is inconsistent with the provisions of Article III or Article XI of GATT 1994. 第2条 国民待遇和数量限制 1. 在不损害GATT 1994项下其他权利和义务的情况下，各成员不得实施任何与GATT l994第3条或第11条规定不一致的TRIM。
11个热点话题,20篇优秀范文,2020中考英语作文满分就靠它啦!
一. 学术文化篇 1. 沉迷网络游戏 李华沉迷于电脑游戏中，影响了学习。作为他的好朋友，你打算怎么帮他呢?请用下面所给的提示词写一篇不少于80字的短文。字迹工整，语言流畅。 提示词：give up concentrate on be (become)interested in ★范文 Li Hua spent too much time playing computer games and he fell behind others. As a good friend of his, I must do something to help him. Firstly, I think it’s very important for him to learn lessons well. He should spend most of his time on his study instead of computer games. Secondly, I must tell him that playing computer games too much is bad for his health, especially for his eyes. So he must give it up. I can play more sports with him after school. Maybe he will become more interested in sports than computer games. And then I'll ask him to concentrate more on his study. Of course, I will try my best to help him with all his subjects. I think I can do it in many fun ways and let him find much fun in studying. At the same time, I'll ask both his parents and our teachers to help him, too. If I try these, I'm sure he will make great progress soon. 2. 怎样学好英语 世界在发展，文化在交融，英语已经成为人们沟通的桥梁。怎样学好英语是我们一直在探索的问题。几年的学习经历你一定积累了许多成功的经验，请从听、说、读、写四方面谈谈你的建议。 要求：1. 词数：80—100词(开头已给出，不计入总词数) 2. 字迹工整，语言流畅，表达正确，逻辑清晰。 ★范文 How to learn English well English is important and useful to us. How can we learn it well? Here are my suggestions. First, we should often listen to the tapes, English songs and programs. Watching English movies is also helpful to us. Second, we should speak English in class as much as possible. Don’t be afraid of making mistakes. The more you speak, the fewer mistakes you’ll make. We'd better join the English club and practice with others. Third, we can read more English newspapers and magazines. It’s good for us. At last, we should recite some good passages and keep diaries. In a word, as long as we do more listening, speaking, reading and writing, we will learn English well. 二. 素质教育篇 3. 如何减压让生活更美好 许多学习生活中的烦恼都会使人产生压力,为了更好地发现及解决同学们中存在的心理压力问题,你们班特意开展了一次以"Less Pressure, Better Life"为主题的英语演讲比赛,请你准备发言稿,谈谈你的一些缓解压力的好办法,与同学分享,内容包括: (1) 同学们中普遍存在的压力是什么; (2) 我的压力是什么; (3) 我是如何成功缓解我的压力的。 注意:文中不得出现真实的姓名和校名。词数80~100。 ★范文
英语作文我的家乡
My hometown——Dongtou，which is located off Oujiang coast，is a beautiful island as a string of gleaming pearl. Although it is not as beautiful as the Fragrant Hill with red leaves like fire, it has desirable bird islands.; Although it doesn’t have the river which is crystal clear and level as a mirror like Guilin landscape, it has a vast sea; Although it doesn’t have various fruits as Xin jiang, it has rich seafood.; Although it doesn’t have world-famous architectures, it has ancient fishing villages which are impressing oceanic culture characteristics. In a word, it is a charming arcadia. In the early morning before the sunrise，sea level is fully covered with the misty fog. When you reach the sea and take a deep breath of fresh air, like the general in wonderland, you’ll suddenly feel refreshed and extremely happy. At noon, the sunshine with greater lights reflect on the ocean，and the ocean become glittering as a cornucopia of gems. It is so attracted that people want to take it home to Slowly appreciate. At dusk, when the sun goes down, the fishing boats return with a haul. People remove the baskets of fish and lobster alive and kicking. Suddenly, the dock become busy and people come from everywhere to buy or take these fish. Laughter resounds through the dock. The waves also want in on the action, chasing to beat against the reef, making beautiful voices so as to celebrate for the fisherman. Its late at night, every boats are arranged in the harbor, just as every soldier stick to their own posts to wait for command. On the shore, there are some lights brighting in the buildings and falling on the lake, as a result,The sea has become increasingly
专业英语作文 化学
Degradable Plastic Bags The plastic material, is a high molecular weight organic matter as main component. Over the past few years plastics inspire countless innovations that help make life better, healthier and safer every day. For example, plastic bags help keep the foods we eat and serve our families safer and fresher than ever before. But it cause the white pollution. So June 1, 2008 started the implementation of the "plastic limit order" .To protect our environment, we should use more environmental plastic bags. The production of plastic bags added in the process of degradation masterbatch plastic bags that degradable plastic bags, degradable plastic bags for 90 days can automatically decompose in accord with certain conditions. To the plastic film bag as raw material for the production of plastic bags, we used plastic bags: the bag bag, shopping bags, handbags, handbags, bags, vest belt and industrial. Some domestic "manufacturers of degradable plastic" method is mainly used in PVC, by adding a certain proportion of starch biodegradable agents, thus changing the hydrocarbon structure of PVC, by microorganisms and decomposition. Another approach is the incorporation of photosensitizer, in plastics, in the sunshine
2020考博英语作文预测：白色污染问题现象与措施
2020考博英语作文预测：白色污染问题现象与措施 2020考博各研究生院已陆续开始初试，考前考博英语作文押题是 考博生们喜闻乐见的信息，俗话说考前磨刀不快也光，作文考前一定 要充分准备好，常考的话题就那么几类，多练多总结并不难。以下是 小编整理的一些考博英语作文预测范文，供大家参考复习。 1. 开头(介绍背景)：先下定义，白色污染(white pollution)是随意丢弃塑料袋(disposal of plastic bags)，难以降解处理(hard to be decomposed in nature)，造成环境破坏：影响市容(destroy the look of city)，同时对人体有潜在危害(has hazards to human’s health)。 2. 问题产生根源：居民为其方便(for the sake of convenience)，大量使用，造成不可逆转的污染(cause irreversible damage to environment)。 3. 措施1：政府制定政策(make policies and regulations)，限制污染企业(place a limitation on the development of factories that pollute; 4. 措施2：政府大力探索新材料(make an effort to seek new material)，用清洁环保材料代替(use environmental-friendly materials to replace old ones) ，既清洁又便利; 5. 措施3：政府应做好民众的宣传(make known to people the danger of white pollution)，提升民众环保意识(raise the public awareness towards environmental protection)，比如多用环保袋去替代产生白色污染的塑料袋(encourage people to use reusable bags more); 5.结尾(号召)：解决白色污染问题不是梦，要考政府和民众的齐 心努力(requires the collaboration of the government and the population)。
学术英语作文
more and more用表示上升趋势的词代替如：a growing/increasing number of.. inevitable不可避免 physically beneficial副词+形容词的表达方式←比较好看的一种方式 议论文开头方法一： Background→Controversy (2 different/opposite ideas)、As/Being a controversial issue，。。。。。作为有争议的问题。。。。Now days， the issue on。。。is highly debatable，and ideas vary from person to person。不同的人有不同的观点。（不要用different people 。。。。）Some would claim 。。。。，while some others may suggest。。。一些人认为。。另一些人认为。。 Some would claim。。。，while the idea。。。is still held by some others。Idea倒装，句子更好看。不能用some。。the other。。这样只有两种可能性，太绝对。。 5个常用单词的替代 Think →claim / suggest / believe / advocate / maintain / suppose Good → beneficial / profitable / helpful / sound / decent / positive Bad→ harmful / detrimental / hazardous / negative Advantage→merit / virtue / benefit / profit / pro Disadvantage →demerit / drawback / flaw / shortcoming / con / cost 赞成某个观点。。 As for me，I side with the fomer/latter 中立观点。。 As far as I am concerned， I believe both views have their own merits and con coexit like a double-edged sword 双刃剑 。。。。can be neither absolutely perfect nor purely harmful 末段（总结） All in all/to conclude/in conclusion/in general/to sum up When all the above-mentioned factors are taken into consideration, a conclusion could be drawn that … (主要用来凑字数) 讨论用结构On one hand，。。。。contribute greatly to。。。 On the other hand/On the contrary/ in contrast，the demerits of。。。。can not be ignored. To begin with/firstly/first and foremost/首先 Besides/in a addition/moreover/其次 Thirdly/furthermore/last but not least/最后 alters=change 用alter代替change A result in B 因A果B C result from D 因D果C 介词 with/like/because of +名词（组）连词 as/because +句子 Boost related industry 推动相关产业Deplete fuel resources worldwide 耗尽石油资源 Air pollution 空气污染Help the spread of epidemics传播传染病（飞机） Traffic jam/accident 交通拥挤/事故（汽车） It is ..... that makes ......倒装 Overseas traveling widens horizon and visualizes what is learnt in books.扩大视野 Sweeten your life.甜蜜你的生活！ 85°C Besides, overseas shopping enables one to buy fashionable dresses and jewelries at a lower price.购物。。tourism/tourist industry 旅游业
大学英语专业英语写作试卷完整版
大学英语专业英语写作 试卷 HUA system office room 【HUA16H-TTMS2A-HUAS8Q8-HUAH1688】
Answer Sheet I . Rewrite the following titles according to general rules: 1. 2. 3. 4. 5. II. Identify the figures of speech employed in each of the following sentences 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. III. Sentence identification A. Identify sentences as simple, compound, complex or compound-complex. 1. 2. 3. 4. 5. B. Identify sentences as loose, periodic, or balanced: 1. 2. 3. 4. 5. IV. Rewrite the following according to the requirements listed in the brackets: 1. 2. 3. 4. 5.
V. Read the following, identify the mistakes and rewrite the sentences: 1. 2. 3. 4. 5. VI. The following sentences are given in a wrong order. You are required to reorganize these sentences into a coherent paragraph by putting the numbers of these sentences into their correct order. The correct order: VII. Choose the most suitable topic sentence for each paragraph. 1. 2. 3. VIII. Choose from the following transitional expressions and put them in the blanks in the paragraphs. 1. 2. 3. 4. IX. Writing I. Rewrite the following titles according to general rules. (5 points, 1 point for each) 1. approaches to teaching english as a foreign language 2. what can the artist do in the world of today 3. hit-and-run accidents 4. best ways to say I love you 5. where i lived, and what i lived for
我的英语作文范文
我的英语作文范文 my hobby is reading my hobby is reading,for i think reading can make a person know more about the world and make a person to be a better one to live and learn and work .since i was five years old, my father bought me the first picture book , i am interested in reading . then i read a lot books, including fary tales , world famous novels, history books, biographies, and so on . i like reading so much ,for it mkes my life colorful ,wonderful ,and beautiful ! it makes me a better person and gives me a better life .thanks to reading ! 我的爱好是读书，因为我认为阅读能使人更了解世界，使人成为一个更好的生活、学习和工作。自从我五岁的时候，我父亲给我买的第一本图画书，我的阅读兴趣。然后我读了很多书，包括世界著名的童话故事，小说，历史，传记，等等。我很喜欢读书，因为它属于我的生活丰富多彩，美妙的，美丽的！它使我成为一个更好的人，给我一个更好的生活。感谢阅读！
研究生学术英语作文
Evaluation of the Effect of AIDS Health Education on College Students in Nanjing Fang Kun 152899;Wang Chongxu 152895; Song Yue 152894; Deng Lin 152898; Chen Chen 152922; LvRongrong 152921 ; Cheng Xiaoqing 152903
Abstract: Objective: The purpose of this research is to know college students’ knowledge, attitude and behavior about AIDS in Jiangsu province, so we can evaluate the effect of AIDS intervention to provide evidence for AIDS public education more effectively in the future. Methods: We educated college students of six pilot universities by playing the videos and sending health education prescription as the main way of risk warning education. We selected students from each college randomly as evaluation object, the questionnaire mainly included students’ basic information, AIDS related knowledge and sexual health.Descriptive analysiswas conducted to analysis s tudents’ basic situation and the sexual health conditions,chi-square test was used to analysis the difference of the education on HIV/AIDS related knowledge, awareness and attitude. Results: After education, the awareness level of the basic knowledge of AIDS in all students increased from 69.05% to 82.15%(Χ2=147.335,P<0.001), but the level of awareness of the students varied from school to school, and there is a big space for improvement in each school; Introduction of the programme witnessed a dramatic change in the students’ attitudes towards AIDS. For instance, the answers of“students’attitudes towards the importance of teaching AIDS related education in schools,someone suspected of being infected with the AIDS/HIV virus will immediately do the antibody detection test or not and the willingness to use condom during the sexual encounter” ha ve proportionally increased in the positive direction. Conclusion: The evaluation results show that the pilot educational activities have made significant effect. Although promotion of AIDS education in the colleges has proven to be fruitful, beneficial and worthy enough but some part of the education still needs to be improved and strengthened. Key words: College students; AIDS; Intervention; Effects
专业英语写作技巧及范文
专八写作范文第20篇 Some people prefer to eat at food stands or restaurants. Other people prefer to prepare and eat food at home. Which do you prefer? Use specific reasons and examples to support your answer. Some people like to eat out at food stands and restaurants, while others like to prepare food at home. Often it depends on the kind of lifestyle people have. Those with very busy jobs outside the house don't always have time to cook. They like the convenience of eating out. Overall, though, it is cheaper and healthier to eat at home. While eating in restaurants is fast, the money you spend can add up. When I have dinner at restaurant with a friend, the bill is usually over twenty dollars. I can buy a lot of groceries with that much money. Even lunch at a fast-food stand usually costs five or six dollars for one person. That’s enough to feed the whole family at home. Eating at home is better for you, too. Meals at restaurants are often high in fat and calories, and they serve big plates of food--much more food than you need to eat at one meal. If you cook food at home, you have more control over the ingredients. You can use margarine instead of butter on your potatoes, or not put so much cheese on top of your pizza. At home, you can control your portion size. You can serve yourself as little as you want. In a restaurant, you may eat a full plate of food "because you paid for it". It's true that eating out is convenient. You don't have to shop, or cook, or clean up. But real home cooking doesn't have to take a lot of time. There are lots of simple meals that don't take long to make. In fact, they're faster than eating out, especially if you think of the time you spend driving to a restaurant, parking, waiting for a table, waiting for service, and driving home. Both eating at restaurants and cooking at home can be satisfying. Both can taste good and be enjoyed with family and friends. I prefer cooking at home because of the money and health issues, but people will make the choice that fits their lifestyle best. 如何看待在校大学生打工（１） 【题目】 In some countries, teenagers have jobs while they are still students. Do you think this is a good idea? Support your opinion by using specific reasons and details.
化学专业-英语单词
化学专业-英语单词
Chemistry Summer Holidays Homework for Future Freshmen of High school Class: __________________________ Chinese Name:______________________ English Name:______________________
Beijing#80 High School International Department
Introduction to Chemistry 化学入门 Definition: Chemistry is the study of the composition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany there processes. (化学的定义：化学是研究物质的组成，结构，性质，物质发生的变化，以及变化过程中涉及的能量变化。) Branches of Chemistry: Organic Chemistry；Inorganic Chemistry；Physical Chemistry; Analytical Chemistry; Biochemistry; Theoretical chemistry (化学的分支：有机化学；无机化学；物理化学；分析化学；生物化学；理论化学)
Day 1 【Task】Please put the Chinese name into the suitable chapter. Vocabulary about chapter name. 章节名称词汇 （----What may we study about chemistry in the first year? 高一可能涉及哪些化学知识？） 物质和变化；原子：构建物质的基本单元；酸和碱；氧化还原反应；气体； 化学键；原子中的电子排布；称量和计算；有机化学；反应能量；元素周期律；化学方程式和化学反应；化学平衡；化学反应动力学；化学计量学； 化学式和化学物质；物质的状态；生物化学；电化学；滴定与pH值； 水溶液中离子和稀溶液的依数性；溶液； Chapter 1 Matter and Change ( ) Chapter 2 Measurement and Calculation ( ) Chapter 3 Atom-Building Block of Matter ( ) Chapter 4 Arrangement of Electrons in Atoms( ) Chapter 5 The periodic Law ( ) Chapter 6 Chemical Bonding ( ) Chapter 7 Chemical Formulas and Chemical Compounds ( ) Chapter 8 Chemical Equations and Reactions ( ) Chapter 9 Stoichiometry ( ) Chapter 10 States of Matter ( ) Chapter 11 Gas ( ) Chapter 12 Solution ( ) Chapter 13 ions in Aqueous Solution and colligative Properties ( ) Chapter 14 Acid and Base ( ) Chapter 15 Acid-Base Titration and pH ( ) Chapter 16 Reaction Energy ( ) Chapter 17 Reaction Kinetics ( ) Chapter 18 Chemical Equilibrium ( ) Chapter 19 Oxidation-Reduction Reactions ( ) Chapter 20 Electrochemistry ( ) Chapter 22 Organic Chemistry ( ) Chapter 23 Biology Chemistry ( )