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。来源教育城外语网
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 applyin 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.
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