2021职称英语理工a,b哪个高 [2017职称英语考试理工类B级阅读文章八] .doc

2021职称英语理工a,b哪个高 2017职称英语考试理工类B级阅读文章八 职称英语网权威发布2017职称英语考试理工类B级阅读文章八，更多2017职称英语考试理工类B级阅读文章八相关信息请访问职称英语考试网。Big technology comes in tiny packages. New cell phones and personal computers get smaller every year，which means these electronics require even smaller components on the inside.Engineers are looking for creative ways to build these components，and they"ve turned their eyes to graphene，a superthin2 material，made of carbon，that could change the future of electronics.This year"s Nobel Prize for Physics3 has been awarded to Andre Geim and Kostya Novoselov from the University of Manchester4，UK. for the discovery of graphene. Graphene isn"t just small,it"s"the thinnest possible material in this world，" says Novoselov. He calls it a"wonder material. "It"s so thin that you would need to stack about 25,000 sheets just to make a pile as thick as a piece of ordinary white paper. If you were to hold a sheet of graphene in your fingers5，you"d have no idea because you wouldn"t be able to see it.Carbon is one of the most abundant elements in the universe. Every known kind of life contains carbon. Graphene is a sheet of carbon，but only one atom thick. You don"t have to look far to find grapheme -it"s all around you.If you want this high-tech wonderstuff6，all you need is a pencil，paper and a little adhesive tape. Use the pencil to shade a small area on the paper, and then apply a small piece of adhesive tape over the area7. When you pull up the tape，you"ll see that it pulls up a thin layer of some of the shading from your pencil. That layer is called graphite，one of the softest minerals in the world.Now stick the same piece of tape on another sheet of paper and pull the tape up -there should be an even thinner layer，this time left on the paper. Now imagine that you do this over and over，until you get the thinnest possible layer of material on the paper. This layer would be only one atom thick，and you wouldn"t be able to see it. Graphite is made of layers of graphene，so when you get to the thinnest possible layer，you"ve found graphene.词汇：graphene n.石墨烯abundant adj.丰富的，充裕的atom n.原子adhesive n.胶粘剂; adj. 黏着的stack v.使成堆，堆放graphite n.石墨注释：1. superstrength：超强的力量。该词是一个合成词，由两部分组成， super(超级的)和strength (力量)。2. superthin：超薄。见注释1。3. Nobel Prize for Physics ：诺贝尔物理学奖4. the University of Manchester：曼彻斯特大学。这是一所位于英国曼彻斯特市的公立研究型大学，创建于1851 年。5. If you were to hold a sheet of graphene in your fingers：句子使用的是虚拟语气，因为不可能将几乎肉眼看不到的石墨烯放在指尖上。6. wonderstuff：神奇物。该词为合成词，由wonder(神奇)和stuff(东西)两个词构成。wonderstuff 指的是第二段提到的wonder material。7. apply a small piece of adhesive tape over ：将一小片胶带敷在上。练习：1 .What would change the future of electronics according to engineers?A Big technology.B Creative ways.C Graphene.D Both A and B.2. According to the second and third paragraphs，what is true of graphene?A It can be used to make paper.B It is possible to see it with our naked eye.C It is easy to find graphene.D It is possibly the thickest material in the world.3. Which of the following can be used to replace the word "apply"in paragraph 4?A request.B polish.C use.D put.4. Which of the following is NOT meant in the last two paragraphs?A Graphene is made of graphite，one of the softest materials in the world.B Graphite is made of layers of graphene，the thinnest material in the world.C When we get to the thinnest possible layer of graphite，we find graphene.D With a pencil，a sheet of paper and a piece of adhesive tape，we can find graphene.5. Graphene"s superstrength lies in the fact thatA It is the thinnest material in the world.B It is made of the most abundant elements in the world.C It can help to make electronic components smaller.D It helps engineers to produce more sensitive electronic products.答案与题解：1. C 第一段最后一句提供了答案：工程师将眼光投向石墨烯，一种由碳原子组成的超薄材料，第 5 页 共 5 页