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1、145Text 11 Nuclear EnergyNew Words And Expressionsinexhaustible /adj.无穷无尽的nuclearadj.核心的，原子核的，核的harnessvt.利用reactorn.反应堆fissionn.裂变，分裂fusionn.聚变，熔化potentialn.潜能，潜力occurvi.发生，出现nuclein.（nucleus的复数形式）核子，心explosionn.爆炸，爆发hydrogenn.氢uraniumn.铀undergovt.经历，遭受，忍受neutronn.中子heliumn.氦humanityn.人性，人类destruct
2、iveadj.破坏性的barreln.桶contaminantn.致污物，污染物isotopen.同位素assemblyn.组合，部件monoxiden.一氧化物terroristn.恐怖分子launchvt.发射（导弹、火箭等）exposuren.暴露，揭露，曝光meltdownn.熔化disposaln.处理，处置，布置garbagen.垃圾，废物formulatev.阐明NOTES1 Enrico Fermi：恩里科费米教授（19011954），美籍意大利物理学家。在他的领导下，美国于1945年研制出第一颗原子弹。2 Uranium-235：铀-235，热中子反应堆核燃料，天然铀中其含量
3、仅0.7%，其余为非裂变元素铀-2383 In 1979people to flee：1979年位于Three Mile Island（靠近宾夕发尼亚州首府哈里斯堡）的核反应堆的冷却系统发生故障，核辐射泄漏迫使上万人逃离当地。4 In 1986from the reactor：1986年一场特大灾难发生在俄罗斯切尔贝利核电站。在这场事故中，从反应堆中泄漏出大量的核辐射。5 Some people thinkand power plants：一些人认为由于核能的实际存在，我们必须在生活中学会使用它。另一些人则认为人类必须消除所有的核武器及核电站。6 After reviewingyour own
4、 opinion：在了解了核能的利弊之后，该轮到你阐述自己的观点。7 The pros and cons：正反面。Exercises1Why is the sun an inexhaustible energy source?2Where is nuclear energy from?3Can we harness fusion reaction to generate electricity now? What is a special condition required to start the fussion reaction?4What is the difference betwe
5、en fission reaction and fusion reaction?5What are the advantages of nuclear energy?6Uranium-235 is used as fuel in nuclear reactors because .A. it is easy to be split for releasing energyB. it can release more energy in nuclear reactors than other elementsC. it is abundant in natureD. it is the only
6、 fuel that can be used in fission reactors7Which is not true about the nuclear radiation?A. If well operated, the radiation from nuclear power plant would not harm the workers and local residents.B. The radiation can cause long-term effect in human body.C. The radiation can induce cancer and even ki
7、ll people.D. No damage has been caused by the radiation since the first nuclear power plant was in operation.8Which element is possibly used as fuel in fusion reactor?A. hydrogenB. uraniumC. plutoniumD. lead9Fusion reaction will be likely used as the most important method to provide energy in the fu
8、ture because .A. fusion reaction is easy to realizeB. fusion reaction only needs less fuel but can provide more energy than conventional methodsC. we have enough experience in operating fusion reactorsD. it will not give out radiation and contaminants10What is the authors point of view on developing
9、 nuclear energy?A. assentient（赞成的）B. opponentC. neutralD. not quite clearText 12 Electric Vehicles and Their AdvantageNew Words And Expressionsautomobilen.汽车，小汽车impurityn.不纯，杂质prominentadj.卓越的，显著的stenchn.恶臭，臭气；v. 发恶臭swarmn.蜂群，一大群emissionn.（光、热等的）散发，发射toxicadj.有毒的，中毒的greenhousen.温室，花房electrolysisn.电解
10、anoden.电 阳极，正极cathoden.电 阴极，负极tail pipen.汽 排气管junk yardn.美 旧车停放场combustionn.燃烧obnoxiousadj.不愉快的，讨厌的furbishvt.擦亮，恢复，磨光suspensionn.吊，悬浮，悬而未决NOTES1 Everything abouttravel：社会和文化生活中的一切都围绕着对汽车的不同需求而变化。2 Henry Ford：美国福特汽车公司创始人。3 They would noflies：他们不用再忍受马粪散发出的臭气以及成群的传播疾病的苍蝇。4 Since carbonglobal warming：由于
11、一氧化碳减少了空气中的氢氧根，使得甲烷含量增加并上升到大气层，导致全球变暖。5 fuel cells：燃料电池。6 During theelectric vehicle：在形成电流的化学反应中，氢原子在阳极释放出电子而在电解液中成为氢离子。电子从阳极出发沿外部电路到达阴极，在此过程中为电动汽车提供电力。Exercises1What do powered vehicles emit?2How do fuel cells work?3Please describe the disadvantages of gas vehicles.4Please describe the benefits of
12、electric vehicles.5What is the main drawback of electric cars?6Evs are powered through .A. gaslineB. fuel cellsC. gasD. CO7The toxic gases released by gas vehicles do not include .A. CO2B. N2OC. CH4D. O28During the electricity-producing reaction, hydrogen atoms give up electrons at the .A. cathodeB.
13、 anodeC. external circuitD. electrode9What is the main disadvantage of EV?A. pollutionB. noiseC. priceD. battery10EVs total travel distance is times as long as that of mothor vehicles.A. 100B. 10C. 5D. 1Text 13 CAD and CAMNew Words And ExpressionsCADn.计算机辅助设计CAMadj.计算机辅助制造NCadj.数字控制Provision n.供应，预备
14、，存粮repetitiveadj.可重复的tediousadj.闷的intricacyn.错综复杂simultaneousn.同时的，同时存在的sketchn.草图，速写，概略aggregaten.总数procurementn.采购feasibilityn.可行性discreteadj.分立的，不连续的NOTES1 The bulk of the development in commercial CAD systems has been in modeling the form of products(i.e. in providing techniques to assist in the representation of form using conventional drawings or new modeling techniques)or in systems to assist in the production of diagrams and the subsequent evaluation of designs represented by these diagrams. 商用CAD系统的巨大发展表现在大量制作产品的模型（即为利用传统绘画技术或新的模型技术再现产品形式而提供技术帮助）或辅助表格制作和评价这些图表描述的设计。2 In princi
