综英Dictation

Unit1

With the hope of finding more survivors of Turkey’s devasting (毁灭性的，全然的) earthquake now but gone, the Turkish authorities are turning their attention to caring for those who have survived.

A full-scale relief effort in the area hit by the earthquake is finally beginning after days of confusion. Turkish and foreign volunteers have been joined by soldiers and the police, and heavy equipment sent by nearby cities and by private companies has been moved to almost every victimized town.

The Minister of Housing estimated that 60,000 buildings had been either destroyed or seriously damaged in the quake. It is hoped that within a few days, many of the homeless will be moved out of the fields and tents where they are now living. Forty-two countries and 38 international organizations have sent aid to Turkey. The world Bank had sent $200 million for housing construction.

Unit2

I think that a successful old age is easier for those who have strong impersonal interests leading to suitable activities. It is in these activities that long experience is really fruitful, and that the wisdom born of experience can be used without becoming a burden. It is no

use telling grown-up children not to make mistakes, both because they will not believe you, and because mistakes are an essential part of education. But if you are one of those who are incapable of impersonal interests, you may find that your life will be empty unless you concern yourself with your children and grandchildren. In that case you must realize that while you can still help them in material ways, you must not expect that they will enjoy your company.

Unit3

Love means that I know the person I love. I’m aware of the many sides of the other person --- not just the beautiful side but also the limitations. I have an awareness of the other’s feelings and thoughts. I can see the other person on a deeper level.

Love means that I care about the welfare of the person I love. If I care about you, I’m concerned about your growth, and I hope you will become all that you can become.

Love means trusting the person I love. If I love you, I trust that you will accept my caring and my love and that you won’t deliberately hurt me. I trust that you will find me loveable and that you won’t abandon me. If we trust each other, we are willing to be open to each other and reveal our true selves.

Unit4

The main reason for the widespread demand for English is its present-day importance as a world language. Besides serving the infinite needs of its native speakers, English is a language in which some of the most important works in science, technology, and other fields are being produced, and not always by native speakers. It is a language of wider communication for a number of developing countries, especially former British colonies. Many of these countries have multi-lingual populations and need a language for internal communication in such matters as government, commerce, industry, law and education as well as for international communication and for access to the scientific and technological developments in the West.

Unit5

With the invention of the radio, newspaper publishers wondered how broadcasting would affect them. Many feared that the radio as a quick and easy means of keeping people informed would displace the newspaper industry altogether.

Others hoped that the brief newscast heard on the air would stimulate listeners’ interest in the story so they’d buy the paper to get

more information. This second idea turned out to be closer to the truth. Radio and print actually supported each other. However, this is not always the case. Take television and motion pictures for example. With the popularization of TV, the motion picture suffered greatly. Movie attendance dropped when people chose to stay at home and be entertained.

Unit6

My Berlin diary for December 2 was limited to four words. “Only three more days!” The Foreign Office was still holding up my passport and how to get exit visa, which worried me. I had to get my passport and official permission to leave on Decembers. There was one other thing to do. For weeks I had thought over my diaries safely out of Berlin. At some moments I had thought I ought to destroy them before leaving. There was enough in them to get me hanged.

The morning I got my passport and exit visa I realized I had less than twenty-four hours to figure out a way of getting my Berlin diaries out. I again thought of destroying them, but I wanted very much to keep them, if I could. Suddenly, later that morning, the solution became clear. It was risky, but it was worth a try.

Unit7

Professors may establish social relationships with students outside of the classroom, but in the classroom they maintain the instructor’s role. A professor may have coffee one day with students but the next day except them to meet a deadline for the submission of a paper to be prepared for a discussion or an exam. The professor may give extra attention outside of class to a student in need of help but probably will not treat him or her differently when it comes to evaluating schoolwork. Professors have several roles in relation to students; they may be counselors and friends as well as teachers. Students must realize that when a teacher’s role changes, they must appropriately adapt their behavior and attitudes.

Unit8

It could be the title of a 21st-century horror movie: “Death by Global Warming”. Instead, it is a real life warning from an American university ecologist who believes global warming may account for millions of human deaths from disease. Right now the evidence of significant global climate change in increase in human is due to numerous environmental factors, including infections disease, pollution by chemicals and biological wastes, and shortage of food. Global warming will only make matters worse.

Global climate change will result in a loss of available food.

Although they may be some benefits in crop production from warmer climates, these beneficial effects will not be so great. Crop losses from plant disease and weeds will increase in a warmer climate.

Unit9

Wealth achieved through dishonest means does not bring happiness. Lottery winning don not bring happiness. Wealth left by parents does not bring happiness. In fact, money alone is almost worthless. If you have both self-esteem and money, you may be well on the way to happiness. However, what is still missing in both self-esteem and money is productive work and a real contribution towards the happiness of others. The secret to happiness lies in the contribution towards the happiness of others. You can fool others but you can never fool yourself. If you obtain wealth through luck or dishonest means, you will know you did not earn it. If you have taken advantage of or hurt others to earn your wealth, you will not be happy. You will not like yourself. You will not feel you are capable.

Unit10

As the eldest son of my parents who were themselves poor, I

had to, fortunately, begin to do some work which still very young in order to earn a living, and therefore come to understand in early boyhood that my duty was to assist my parents and become, as soon as possible, a bread winner in the family.

It was a terrible task for a lad of twelve to rise every morning, except Sunday, to go to the factory which it was still dark, and not to be released until after darkness came again in the evening, with only a forty-minute break at noon.

But I was young and had my dreams, and something within always told me that this would not , could not，should not last---I should some day get into a better position. Also, I felt myself no longer a mere boy, but quite a little man, and this made me happy.

Unit11

Take the control away from your offender mentally replaying your hurt gives power to the person who caused you pain. Instead of focusing on your wounded feelings, learn to look for the love, beauty and kindness around you.

Try to see things from the other person’s perspective. If you empathize with that person, you may realize that he or she was acting out of ignorance, fear, ---even love. To gain perspective, you may want to write a letter to yourself from your offender’s point of

view. Recognize the benefits of forgiveness. Research has shown that people who forgive report more energy, better appetite and better sleep patterns.

Don’t forget to forgive yourself. For some people, forgiving themselves is the biggest challenge. But it can rob you of your self-confidence if you don’t do so.

Unit12

Moral intelligence is the theory put forth by Dr.coles that children learn some of the most important lessons by observing the behavior of those around them in authority positions (mainly parents and teachers). His background in child psychology is deep and he makes full use of ideas from other experts in the field. His theory goes beyond the teaching of moral lessons such as “you shouldn’t steal, or lie”land reaches a deeper level of analysis. He theorizes that children pick up and retain information about moral behavior from witnessing the actions of others. He feels that this manner of learning has a more lasting impact on children. Moral intelligence is created by children by children, but can molded by proper guidance.

Unit13

Karl Mark was the most important of all socialist thinkers and

the creator of a system of thought called Marxism, and the political system called Communism. Marx developed his revolutionary theories over a period of four decades beginning in1843. He formulated his theories with the intention to liberate wage workers or labors from the capitalist societies of nineteenth-century Europe. He maintained that in order to emancipate humanity from economic domination, a social revolution was needed. He helped organize the international socialist movement. His ideas motivated radical political activists who joined his call to overthrow capitalism. Marxism, reduced to the theory that all events are caused by economic self-interest, had a strong influence on many areas of thought from politics to history to literature.

Unit14

Good luck to the Bride and Groom. Many ancient practices that were supposed to prevent bad luck and bring blessings to the bride pair have come down through the years. In many Western countries people shower the bridal pair with confetti to express the hope that the couple will be blessed with children. Tin cans or old shoes are sometimes tied to the automobile that carries the bride and groom away. This practice may have come out of the ancient belief that loud noises frighten bad spirits away. To assure good luck, brides

often heed the old saying and wear for the wedding. Something old, something new, something borrowed, something blue. The bride’s good fortune in getting a husband may be handed on to the unmarried girl who catches the bride’s bouquet after the marriage. According to an old belief the groom carried his bride over the threshold of their new home to protect her from being caught by any mischievous spirits hiding nearby.

高分子材料专业英语第二版部分答案2

unit1 1.Not all polymers are built up from bonding together a single kind of repeating unit. At the other extreme ,protein molecules are polyamides in which n amino acide repeat units are bonded together. Although we might still call n the degree of polymerization in this case, it is less usefull,since an amino acid unit might be any one of some 20-odd molecules that are found in proteins. In this case the molecular weight itself,rather than the degree of the polymerization ,is generally used to describe the molecule. When the actual content of individual amino acids is known,it is their sequence that is of special interest to biochemists and molecular biologists.并不是所有的聚合物都是由一个重复单元链接在一起而形成的。在另一个极端的情形中，蛋白质分子是由n个氨基酸重复单元链接在一起形成的聚酰胺。尽管在这个例子中，我们也许仍然把n称为聚合度，但是没有意义，因为一个氨基酸单元也许是在蛋白质中找到的20多个分子中的任意一个。在这种情况下，一般是分子量本身而不是聚合度被用来描述这个分子。当知道了特定的氨基酸分子的实际含量，它们的序列正是生物化学家和分子生物学家特别感兴趣的地方。 1,题目：Another striking ...答案：.that quantity low saturation bottom much absorb 2. 乙烯分子带有一个双键，为一种烯烃，它可以通过连锁聚合大量地制造聚乙烯，目前，聚乙烯已经广泛应用于许多技术领域和人们的日常生活中，成为一种不可缺少的材料。 Ethylene molecule with a double bond, as a kind of olefins, it can make chain polymerization polyethylene, at present, polyethylene has been widely used in many fields of technology and People's Daily life, become a kind of indispensable materials. Unit3 1 The polymerization rate may be experimentally followed by measuring the changes in any of several properties of the system such as density,refractive index,viscosity, or light absorption. Density measurements are among the most accurate and sensitive of the techniques. The density increases by 20-25 percent on polymerization for many monomers. In actual practice the volume of the polymerizing system is measured by carrying out the reaction in a dilatometer. This is specially constructed vessel with a capillary tube which allows a highly accurate measurement of small volume changes. It is not uncommon to be able to detect a few hundredths of a percent polymerization by the dilatometer technique. 聚合速率在实验上可以通过测定体系的任一性质的变化而确定，如密度、折射率、黏度、或者吸光性能。密度的测量是这些技术中最准确最敏感的。对许多单体的聚合来说，密度增加了20%-25%。在实际操作中，聚合体系的体积是通过在膨胀计中进行反应测定的。它被专门设计构造了毛细导管，在里面可以对微小体积变化进行高精确度测量。通过膨胀计技术探测聚合过程中万分之几的变化是很常见的。 Unti4 2 合成聚合物在各个领域中起着与日俱增的重要作用，聚合物通常是由单体通过加成聚合与缩合聚合制成的。就世界上的消耗量而论，聚烯烃和乙烯基聚合物居领先地位，聚乙烯、聚丙烯等属聚烯烃，而聚氯乙烯、聚苯乙烯等则为乙烯基聚合物。聚合物可广泛地用作塑料、橡胶、纤维、涂料、粘合剂等The synthetic polymers play an increasingly important role on a range of domains, which are synthesized by monomers through addition polymerization or condensation polymerization. Polyolefin and vinyl polymer have taken the lead in terms of the world consumption. PE, PP, etc. belong to the polyolefin, while PS, PVC etc. belong to the vinyl polymer. Polymers can be widely applied in plastics, rubbers, fibers, coatings, glues and so on. Unit7 Ring-opening polymerizations proceed only by ionic mechanisms, the polymerization of cyclic ethers mainly by cationic mechanisms, and the polymerization of lactones and lactones by either a cationic or anionic mechanism. Important initiators for cyclic ethers and lactone polymerization are those derived from aluminum alkyl and zinc alkyl/water systems. It should be pointed out that substitution near the reactive group of the monomer is essential for the individual mechanism that operates effectively in specific cases; for

英语专四历年听写文本

历年英语专业四级考试听力听写原文（1994年-2007年） The American Family (1994) The concept of family life has changed considerably over the years. / In earliest times, several generations lived together in clans, / which consisted of all living descendents and their husbands or wives. / These clans were almost totally self-sufficient, / every member contributing in some way toward the survival of the group. / The men hunted and fished for food or sometimes maintained flocks of sheep or goats. / The women baked bread and roasted the meat their men provided. / Special members of the community were selected to make products like pottery, baskets and home weapons. / But with the development of greater varieties of food, clothing and shelter, / a single clan could no longer develop all the individual skills the group required. / Clans merged into larger societies and at the same time broke into smaller units consisting of married couples and their children. / Later the Industrial Revolution brought about even more important changes in family life. / New inventions brought shorter working hours for men and easier housekeeping routines for women. / Today a productive family life suggests not the group's cooperative efforts of working together, / but the pleasant and meaningful sharing of its leisure. Unidentified Flying Objects (1995) There are many explanations for why UFOs visit the Earth. / The most popular one is that they maybe visitors from other planets./ To fly such aircraft, their builders must develop different forms of aviation,/because they seem to fly much faster than normal aircraft./ The UFOs, it is believed, must contain scientists/ from other planets who are studying life on earth./ It is even believed that several such aircraft may have landed on earth/ and the space visitors may be living amongst us./ But there are also less fantastic explanations available./ Although some sightings of UFOs are difficult to explain, most can be explained quite easily./ In many cases the observers might have made a mistake./ They might have seen a weather balloon or an aircraft./ Or the light they saw in the sky might have been light from the ground,/ reflected on to the clouds./ However, the exact cause of many sightings still remained a mystery. The Indian Medicine Man (1996) Among the Indians of North America, the medicine man was a very important person. He could cure illness and he could speak to the spirits. The spirits were the supernatural forces that controlled the world. The Indians believed that bad spirits made people ill. So when people were ill, the medicine man tried to help them by using magic. He spoke to the good spirits and asked for their help. Many people were cured, because they thought the spirits were helping them, but really these people cured themselves. Sometimes your own mind is the best doctor for you. The medicine men were often successful for another reason, too. They knew about plants that really can cure illness. A lot of medicines are made from the plants that were used by medicine men hundred of years ago. Legal Age for Marriage (1997)

英语专业四级考试真题听力部分历年听写原文(2005年-2014年)

英语专业四级考试真题听写原文2005年 The Wrist Watch It is generally believed that wrist watches are an exception / to the normal sequence in the evolution of man's jewelry. / Reversing the usual order, they were first worn by women, / and then adopted by men. / In the old days, queens included wrist watches among their crown jewelry. / Later, they were worn by Swiss workers and farmers. / Until World War I, Americans associated the watch with fortune hunters. / Then army officers discovered that the wrist watch was most practical for active combat. / Race car drivers also loved to wear wrist watches, / and pilots found them most useful while flying. / Soon men dared to wear wrist watches without feeling self-conscious. / By 1924, some 30 percent of man's watches were worn on the wrist. / Today, the figure is 90 percent. / And they are now worn by both men and women / for practical purposes rather than for decoration. 2006年 The internet The internet is the most significant progress in the field of communications.Imagine a book that never rend, a library with milion floors,or imagine a research project with thousands of sientists working around the clock forever.This is the magic of the internet.

英语听力dictation

DICTATION 1 [00:50.44]Dining Customs in the USA [00:54.14]Americans, like many people elsewhere in the world, [00:58.12]like to invite friends to their homes for an evening of food, [01:02.10]drink and conversation. [01:04.90]Formal dinners in fine homes and hotels in the US [01:08.90]are much the same as formal dinners anywhere in the world. [01:13.50]But as most people in the US have no servants, [01:17.42]their dinner parties at home tend to be informal. [01:21.34]Guests may sit down at a table, [01:23.77]or as many new small homes have no [01:26.25]separate dining room or very small dining space. [01:30.48]Guests can also serve themselves and eat in the living room, [01:34.65]holding their plates or trays on their knees. [01:37.76]A more enjoyable form of entertainment is the picnic. [01:41.79]Americans are great picnickers and [01:44.23]almost every family has a picnic basket. [01:47.90]Summer invitations are often for [01:49.96]a picnic at a park or in the open countryside, [01:53.63]and less hamburgers or hot dogs are cooked over a fire. [01:57.86]Picnic food is usually cold. DICTATION 2 [00:50.31]Costs in Colleges and Universities [00:54.66]Nearly all American students in colleges and [00:57.71]universities pay for their educations. [01:01.07]There are many costs. [01:03.44]First of all, there is tuition. [01:06.31]At some schools, the tuition is very high, [01:09.67]ten thousand dollars a year or more. [01:12.80]At other schools, [01:14.18]it may only be a few hundred dollars a year. [01:17.74]At some community colleges, tuition is free. [01:22.11]There are other costs as well. [01:24.85]Many students leave their homes to [01:26.86]go to schools in other cities. [01:29.84]They may live in dormitories or apartments, [01:32.83]and they must pay for it. [01:35.13]Finally, students must buy textbooks for their courses. [01:39.80]Going to college or university can be a big expense. [01:44.67]Some families start saving money for [01:47.25]their children's education when the children are small. [01:51.67]Many students work to save money for tuition.

高分子材料工程专业英语第二版(曹同玉)课后单词电子教案

高分子材料工程专业英语第二版(曹同玉) 课后单词

专业英语 accordion 手风琴 activation 活化（作用） addition polymer 加成聚合物，加聚物 aggravate 加重，恶化 agitation 搅拌 agrochemical 农药，化肥 Alfin catalyst 醇（碱金属）烯催化剂align 排列成行 aliphatic 脂肪（族）的 alkali metal 碱金属 allyl 烯丙基 aluminum alkyl 烷基铝 amidation 酰胺化（作用） amino 氨基，氨基的amorphous 无定型的，非晶体的anionic 阴（负）离子的antioxidant 抗氧剂 antistatic agent 抗静电剂 aromatic 芳香（族）的arrangement （空间）排布，排列atactic 无规立构的 attraction 引力，吸引 backbone 主链，骨干 behavior 性能，行为 biological 生物（学）的 biomedical 生物医学的 bond dissociation energy 键断裂能boundary 界限，范围 brittle 脆的，易碎的 butadiene 丁二烯 butyllithium 丁基锂 calendering 压延成型 calendering 压延 carboxyl 羧基 carrier 载体 catalyst 催化剂，触媒categorization 分类（法） category 种类，类型 cation 正[阳]离子 cationic 阳（正）离子的centrifuge 离心 chain reaction 连锁反应 chain termination 链终止 char 炭 characterize 表征成为…的特征 chilled water 冷冻水 chlorine 氯（气） coating 涂覆 cocatalyst 助催化剂 coil 线团 coiling 线团状的 colligative 依数性 colloid 胶体 commence 开始，着手 common salt 食盐 complex 络合物 compliance 柔量 condensation polymer 缩合聚合物，缩聚物 conductive material 导电材料conformation 构象 consistency 稠度，粘稠度contaminant 污物 contour 外形，轮廓 controlled release 控制释放controversy 争论，争议 conversion 转化率 conversion 转化 copolymer 共聚物copolymerization 共聚（合）corrosion inhibitor 缓释剂countercurrent 逆流 crosslinking 交联 crystal 基体，结晶 crystalline 晶体，晶态，结晶的，晶态的 crystalline 结晶的 crystallinity 结晶性，结晶度crystallite 微晶 decomposition 分解 defect 缺陷 deformability 变形性，变形能力deformation 形变 deformation 变形 degree of polymerization 聚合度dehydrogenate 使脱氢 density 密度 depolymerization 解聚deposit 堆积物，沉积depropagation 降解 dewater 脱水 diacid 二（元）酸 diamine 二（元）胺 dibasic 二元的 dieforming 口模成型 diffraction 衍射 diffuse 扩散 dimension 尺寸 dimensional stability 尺寸稳定性dimer 二聚物（体） diol 二（元）醇diolefin 二烯烃 disintegrate 分解，分散，分离 dislocation 错位，位错 dispersant 分散剂 dissociate 离解 dissolution 溶解 dissolve 使…溶解 distort 使…变形，扭曲 double bond 双键 dough （生）面团，揉好的面 drug 药品，药物 elastic modulus 弹性模量 elastomer 弹性体 eliminate 消除，打开，除去 elongation 伸长率，延伸率 entanglement 缠结，纠缠 entropy 熵 equilibrium 平衡 esterification 酯化（作用） evacuate 撤出 extrusion 注射成型 extrusion 挤出 fiber 纤维 flame retardant 阻燃剂 flexible 柔软的 flocculating agent 絮凝剂 folded-chain lamella theory 折叠链片晶 理论 formulation 配方 fractionation 分级 fragment 碎屑，碎片 fringed-micelle theory 缨状微束理 论 functional group 官能团 functional polymer 功能聚合物 functionalized polymer 功能聚合物 gel 凝胶 glass transition temperature 玻璃化温度 glassy 玻璃（态）的 glassy 玻璃态的 glassy state 玻璃态 globule 小球，液滴，颗粒 growing chain 生长链，活性链 gyration 旋转，回旋 hardness 硬度 heat transfer 热传递 heterogeneous 不均匀的，非均匀的 hydocy acid 羧基酸 hydrogen 氢（气） hydrogen bonding 氢键 hydrostatic 流体静力学 hydroxyl 烃基 hypothetical 假定的，理想的，有前提的 ideal 理想的，概念的 imagine 想象，推测 imbed 嵌入，埋入，包埋 imperfect 不完全的 improve 增进，改善 impurity 杂质 indispensable 不了或缺的 infrared spectroscopy 红外光谱法 ingredient 成分 initiation （链）引发 initiator 引发剂 inorganic polymer 无机聚合物 interaction 相互作用 interchain 链间的 interlink 把…相互连接起来连接 intermittent 间歇式的 intermolecular (作用于)分子间的 intrinsic 固有的 ion 离子 ion exchange resin 离子交换树 脂 ionic 离子的 ionic polymerization 离子型聚合 irradiation 照射，辐射 irregularity 不规则性，不均匀的 isobutylene 异丁烯 isocyanate 异氰酸酯 isopropylate 异丙醇金属，异丙氧化金属 isotactic 等规立构的 isotropic 各项同性的 kinetic chain length 动力学链长 kinetics 动力学 latent 潜在的 light scattering 光散射 line 衬里，贴面 liquid crystal 液晶 macromelecule 大分子，高分子 matrix 基体，母体，基质，矩阵 mean-aquare end-to-end distance 均方末端距 mechanical property 力学性能， 机械性能 mechanism 机理 medium 介质中等的，中间的 minimise 最小化 minimum 最小值，最小的 mo(u)lding 模型 mobility 流动性 mobilize 运动，流动 model 模型 modify 改性 molecular weight 分子量 molecular weight distribution 分子量分布 molten 熔化的 monofunctional 单官能度的 monomer 单体 morphology 形态（学） moulding 模塑成型 neutral 中性的 nonelastic 非弹性的 nuclear magnetic resonance 核磁共振 nuclear track detector 核径迹探测 器 number average molecular weight 数均分子量 occluded 夹杂（带）的 olefinic 烯烃的 optimum 最佳的，最佳值[点，状态] orient 定向，取向 orientation 定向 oxonium 氧鎓羊 packing 堆砌 parameter 参数 parison 型柸 pattern 花纹，图样式样 peculiarity 特性 pendant group 侧基 performance 性能，特征 permeability 渗透性 pharmaceutical 药品，药物，药物的，医药 的 phenyl sodium 苯基钠 phenyllithium 苯基锂 phosgene 光气，碳酰氯 photosensitizer 光敏剂 plastics 塑料 platelet 片晶 polyamide 聚酰胺 polybutene 聚丁烯 polycondensation 缩（合）聚 （合） polydisperse 多分散的 polydispersity 多分散性 polyesterification 聚酯化（作 用） polyethylene 聚乙烯 polyfunctional 多官能度的 polymer 聚合物【体】，高聚物 polymeric 聚合（物）的 polypropylene 聚苯烯 polystyrene 聚苯乙烯 polyvinyl alcohol 聚乙烯醇 polyvinylchloride 聚氯乙烯 porosity 多孔性，孔隙率 positive 正的，阳（性）的 powdery 粉状的 processing 加工，成型 purity 纯度 pyrolysis 热解 radical 自由基 radical polymerization 自由基聚合 radius 半径 random coil 无规线团 random decomposition 无规降解 reactent 反应物，试剂 reactive 反应性的，活性的 reactivity 反应性，活性 reactivity ratio 竞聚率 real 真是的 release 解除，松开 repeating unit 重复单元 retract 收缩 rubber 橡胶 rubbery 橡胶态的 rupture 断裂 saturation 饱和 scalp 筛子，筛分 seal 密封 secondary shaping operation 二次成型 sedimentation 沉降（法） segment 链段 segment 链段 semicrystalline 半晶 settle 沉淀，澄清 shaping 成型 side reaction 副作用 simultaneously 同时，同步 single bond 单键 slastic parameter 弹性指数 slurry 淤浆 solar energy 太阳能 solubility 溶解度 solvent 溶剂 spacer group 隔离基团 sprinkle 喷洒 squeeze 挤压 srereoregularity 立构规整性【度】 stability 稳定性 stabilizer 稳定剂 statistical 统计的 step-growth polymerization 逐步聚合 stereoregular 有规立构的，立构规整性的 stoichiometric 当量的，化学计算量的 strength 强度 stretch 拉直，拉长 stripping tower 脱单塔 subdivide 细分区分 substitution 取代，代替 surfactant 表面活性剂 swell 溶胀 swollen 溶胀的 synthesis 合成 synthesize 合成 synthetic 合成的 tacky （表面）发粘的 ,粘连性 tanker 油轮，槽车 tensile strength 抗张强度 terminate （链）终止 tertiary 三元的，叔（特）的 tetrahydrofuran 四氢呋喃 texture 结构，组织 thermoforming 热成型 thermondynamically 热力学地 thermoplastic 热塑性的 thermoset 热固性的 three-dimensionally ordered 三维有序的 titanium tetrachloride 四氯化钛 titanium trichloride 三氯化铁 torsion 转矩 transfer （链）转移，（热）传递 triethyloxonium-borofluoride 三乙基硼氟 酸羊 trimer 三聚物（体） triphenylenthyl potassium 三苯甲基钾 ultracentrifugation 超速离心 （分离） ultrasonic 超声波 uncross-linked 非交联的 uniaxial 单轴的 unsaturated 不饱和的 unzippering 开链 urethane 氨基甲酸酯 variation 变化，改变 vinyl 乙烯基（的） vinyl chloride 氯乙烯 vinyl ether 乙烯基醚 viscoelastic 黏弹性的 viscoelastic state 黏弹态 viscofluid state 黏流态 viscosity 黏度 viscosity average molecular weight 黏均分子量 viscous 粘稠的 vulcanization 硫化 weight average molecular weight 重均分子量 X-ray x射线 x光 yield 产率 Young's modulus 杨氏模量

英语专四听力dictation

Digital cameras According to a standard definition, a digital camera is a camera that produces digital images that can be stored in a computer, displayed on a screen and printed. Years ago, people used to possess two different devices in order to take pictures and make videos. The creation of digital cameras was motivated mainly by two factors. First, need to spare space. Second make it more comfortable for people to do both things with higher quality results. the multi-functionalism of digital cameras and combination of several devices in one make it a popular choice for a modern man. For years a digital camera has been unaffordable for many families. However, the variety of digital cameras and various prices nowadays make it possible for almost every single family to buy a digital camera. With increasingly fierce competition, the digital camera manufactures satisfy customers with lower prices but best quality standards. The migration of birds The most obvious feature of birds is that they can fly. This facility gives them great mobility and control over their movements. Many species can travel quickly and economically over long distances, up to thousands of kilometers, if necessary, crossing seas, deserts or other inhospitable areas. They also have great orientation and navigational skills and are able to remember and re-find remote places they have previously visited. Birds can thereby occupy widely separated areas at different seasons, returning repeatedly to the same localities from year to year. Although migration is evident in other animal groups, including insects, mammals and fish, in none is it as widely and well-developed as in birds. The collective travel routes of birds span almost the entire planet. As a result of migration, birds’ distributions are continually changing on regular seasonal patterns and on local, regional or global scales. Benefits of becoming a teacher Becoming a teacher gives you a chance to spend a major portion of your day with children or youngsters. With kids around, you are a part of their world of innocence and purity. It indeed creates a healthy work environment for you. On becoming a teacher, you get a chance to be with children, laughing with them, think their way and enjoy their innocent, silly and hopefully naughty behavior. Apart from this, the nature of your job is that you do not work on weekends and you get your share of holidays. Becoming a teacher entitles you for receiving private scholarships and sponsorships for teaching programs. However, one of the most important benefits of becoming a teacher is that teachers contribute to the shaping of the future generations. They make a difference to society by playing a vital role in nurturing young minds. British and American police officers Real policemen both in Britain and the U.S. hardly recognize any common points between their lives and what they see on TV, if they ever get home in time. Some