From the two letters, we can learn Professor Raj Persaud _____

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• 1Johnson’s letter shows_____ .

  A.a stranger in a restaurant is likely to tip a bit more.

  B.diners receive better service if they frequent a restaurant

  C.repeat diners may get good service if they tip a bit more.

  D.the tipping system works to the advantage of new customers

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• 2What can we learn from Hoffman’s letter、

  A.Quality of service determines tipping in the US.

  B.Americans don’t tip in non-fast-food restaurants.

  C.Tipping in US upmarket restaurants is unnecessary.

  D.How to tip in the United States is not complicated.

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• 3What can we learn from Radcliffe’s story、

  A.Practice makes perfect

  B.Well begun is half done.

  C.A friend in need is a friend indeed

  D.Where there is a will there is a way

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• 4According to the text, Radcliffe has won_____London marathon title（s）.

  A.four

  B.three

  C.two

  D.one

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• 5By saying “I can’t put a number on it,” Radcliffe means she’s not sure_____ .

  A.if she has the ability to set a new world record

  B.if she can win another race though she has won many times

  C.how many times a marathon runner can set the world record

  D.if she has the ability to produce four or five world-class times.

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• 6The two letters most probably appear in a ______.

  A.notice

  B.handbook

  C.book review

  D.newspaper

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• 7_____will be developed and used in the construction industry.

  A.“Green roofs” that cool or heat buildings

  B.“Smart wrap” that catches the sun’s energy

  C.Sunlight-measuring sensors that control lights

  D.Window coating that lets light in, but keeps heat out

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• 8The elevators at Seven World Trade Center are special because they can ______.

  A.send people to floors with fewer stops

  B.teach people how to use their ID cards

  C.make people stay very cool in summer

  D.help people go traveling in the building

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• 9The underlined word “it” in the last paragraph refers to _____.

  A.a human hair

  B.smart wrap

  C.the sun’s energy

  D.a transmitter

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• 10What might be the most suitable title for the text、

  A.Buildings Are Becoming Smarter

  B.Buildings Are Getting More Sunlight

  C.Buildings Are Lacking in Much Energy

  D.Buildings Are Using Cheaper Materials

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