According to the second and third paragraphs，what is true of graphene?
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1 .Paragraph 5__________
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2 .From this passage, we know that the most important factors in computer security are __________.
A viruses and hackers B tangible property C worth doing D attacks other programs E except information lost F all the crimes.
3 .A virus is such a program that it is hidden in other programs and __________.
A viruses and hackers B tangible property C worth doing D attacks other programs E except information lost F all the crimes.
4 .In some cases, insurance companies will compensate the customers all the losses _______.
A viruses and hackers B tangible property C worth doing D attacks other programs E except information lost F all the crimes.
5 .Now courts think information stored in the computer is also _______.
A viruses and hackers B tangible property C worth doing D attacks other programs E except information lost F all the crimes.
7 .Which of the following can be used to replace the word “apply” in paragraph 4?
A request. B polish. C use. D put.
8 .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 grapheme, 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 ...
9 .Graphene's superstrength lies in the fact that _______.
A 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.
10 .The main purpose of this passage is to ___________.
A criticize the government for its incompetence B explain the differences between two types of murders C argue for the value of the death penalty D initiate a veto over the bill reestablishing the death penalty
