Which of the following is NOT mentioned in the text that contributes to the different amount of energy a computer consumes、

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• 1If sleep mode goes wrong，what will probably happen to your computer、

  A.It will consume as little energy as possible.

  B.It is more likely to be damaged by a virus picked up from the Internet.

  C.It will have to be rebooted when used again.

  D.It has to be shut down and unplugged.

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• 2It can be learned from the last two paragraphs that cloud whitening ________.

  A.helps us learn more about global warming

  B.means cutting CO2 emissions

  C.is the best way to deal with climate change

  D.can’t stop global warming basically

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• 3Compared to other projects, cloud whitening ________.

  A.has a greater effect on volcanoes

  B.will bring more benefits

  C.will benefit man’s health most

  D.can reduce temperatures in a better way

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• 4The fourth paragraph mainly tells us ________.

  A.ways to deal with climate change

  B.the costs to deal with climate change

  C.cloud whitening costs much less than other projects

  D.leading nations waste much money in cutting CO2 emissions

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• 5“Marine cloud whitening” has an effect on global warming by ________.

  A.cutting sunlight

  B.sending cold air into space

  C.cooling water in the air

  D.cooling air with water

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• 6When does a computer consume the most energy、

  A.When we let it remain idle.

  B.When we use it to do complex calculations.

  C.When we use it to type some documents and e-mail.

  D.When we use it for surfing the Internet.

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• 7The reason why a desktop computer uses more energy than a laptop computer is that________.

  A.a desktop computer’s monitor is separate and often larger

  B.a desktop computer is larger than a laptop computer in size

  C.a desktop computer performs more kinds of work than a laptop computer

  D.a desktop computer is not energy-efficient

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• 8Which of the following is implied in the first two paragraphs、

  A.Frequent starting and stopping can damage a computer.

  B.A computer’s longevity depends more on the proper way you use it.

  C.A virus picked up from the Internet is likely to damage a computer.

  D.The more often you use a computer，the more smoothly it works.

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• 9According to the passage, the credit card makes its owner  ________.

  A.withdraw as much money from the bank as he wishes

  B.obtain more convenient services than other people do

  C.enjoy greater trust from the storekeeper

  D.cash money where he wishes to

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• 10From the last sentence of the first paragraph we learn that ________.

  A.in the future all the Americans will use credit cards

  B.nowadays many Americans do not pay in cash

  C.it is now more convenient to use credit cards than before

  D.credit cards are mainly used in the United States today

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