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  3. 共用题干 第一篇Graphene' s SuperstrengthBig technology comes in tiny packages.New ...

共用题干 第一篇Graphene' s SuperstrengthBig technology comes in tiny packages.New ...

admin2020-12-24  4
问题 共用题干
第一篇

Graphene' s Superstrength

Big technology comes in tiny packages.New ccii phones and personal computers get snialler every year,
which means these electronics require even smaller components on the inside.Engineer; are looking for
creative ways to build these components,and they'ye turned their eyes to graphene,a superthin material,
made of carbon,that could change the future of electronics.
This year's Nobel Prize for Physics has been awarded to Andre Geim and Kostya Novoselov from the
University of Manchester,U.K.for the discovery of graphene.Graphdne isn't just small;it's "the thinnest
possible material in this world"says Novosclov.iJe 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 fingers,you'ci 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 earboti,but only one atom thick.You don't have to look far to find graphene一it's
all around you.
If you want this high-tech wonder stuff,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 area.
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 mninerals in the world.
Now stick the same piece of tape on another sheet of paper and pull the tape up一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 he 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.
选项 Which of the following statements about graphene is true?
A:It is visible to the human eye.
B:It is possibly the thinnest material in the world.
C:It can he used to make paper.
D:Finding it demands time and money.
答案B
解析由文章第一段最后一句话中“they' ye turned their eyes to graphene, a superthin material, made of carbon, that could change the future of electronics”可知，石墨烯能够改变电子学的将来， 故选C。
由文章第二段的第二句中“Graphene isn' t just small; it' s 'the thinnest possible material in this world'’可知，石墨烯不仅小，它还是世界上最薄的物质。
第四段中apply一词在文章中的意思是“涂，敷”和单词put（放置）意思最为接近，故 选D。
文章的最后两段作者介绍了用一种简单的方法来发现石墨烯，该方法只需使用铅笔、 纸和胶带，故选A。
由文章第一段的内容可知，由于石墨烯的超薄特性，它能帮助制造出更小的电子产品， 从而改变电子学的将来发展，故选C。 第二篇 本篇文章主要讲述的是波多黎各的茉肴是知何发展而来的，并简单介绍了其中一些菜肴。
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