The phrase “ring up sales” most probably means ________(Par

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• 1From 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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• 2According 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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• 3Which 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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• 4The 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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• 5When 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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• 6What is this passage mainly about、

  A.Approaches to the commercial use of computers.

  B.Conveniences brought about by computers in business.

  C.Significance of automation in commercial companies.

  D.Advantages of credit cards in business.

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• 7It can be inferred that ________.

  A.computers will bring disaster

  B.computer industry will not develop faster

  C.computers will bring about more convenience to people’s life

  D.computers can only be used in banks

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• 8The underlined word “longevity” in the second paragraph means “________”.

  A.health

  B.long life

  C.ageing

  D.effect

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• 9The text mainly talks about________.

  A.men’s heart cells

  B.women’s ageing process

  C.the gender difference

  D.hearts and long life

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• 10According to the text, the UK scientists have known that________.

  A.men have fewer cells than women when they are born

  B.women can produce the cells that make the heart beat

  C.the female heart suffers less loss of the cells as she ages

  D.women will never suffer the loss of pumping power as they age

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