During the experiment, the subjects were asked________.

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• 1Scientists at Carnegie Menon University tried to find out________.

  A.why office doors were often left open

  B.when it was a good time to turn off the computer

  C.what questions office workers were bothered with

  D.which behaviors could tell whether a person was busy

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• 2The behavior sensor and software system built in a phone________.

  A.could help store messages

  B.could send messages instantly

  C.could tell when it is wise to interrupt you

  D.could identify important phone calls

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• 3A big problem facing people today is that________.

  A.they must tolerate phone disturbances or miss important calls.

  B.they must turn off their phones to keep their homes quiet.

  C.they have to switch from a desktop phone to a cell phone.

  D.they are too busy to make phone calls.

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• 4In Paragraph 4, the last sentence "King's home was 'an arsenal'" means

  A.King's home was a place where people got together.

  B.King's home was a place where people tested bombs.

  C.King's home was a place where weapons were store

  D.D.King's home was a place where bombs exploded.

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• 5Which of the following was the immediate cause that made King change his view on violence、

  A.The education he received in college.

  B.The attack of his home.

  C.The influence of two active non-violence advocates.

  D.The verdict of the Supreme Court.

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• 6The computer performed better than people in the study because________.

  A.the computer worked harder

  B.the computer was not busy

  C.people tended to be biased

  D.people were not good at statistics

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• 7The author's main purpose in writing the article is to warn of________.

  A.warm weather

  B.hot weather

  C.a new ice age

  D.a new iceberg

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• 8The word "specters" in the second paragraph is closest in meaning to________.

  A.pollution.

  B.carbon dioxide

  C.aerosols

  D.ghosts

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• 9We learn from the third paragraph that________.

  A.London was plagued with rats in the 1950s

  B.London is covered with smog today

  C.London was polluted by smog in the 1950s

  D.Los Angeles is as heavily polluted today as London was in the 1950s

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• 10What will happen if the dust aerosol layer develops、

  A.The Earth will get extremely hot.

  B.The balance between the amount of heat absorbed from the Sun and the amount　lost could hardly be maintained.

  C.The light of the Sun could no longer reach the surface of the Earth.

  D.C.The light of the Sun could no longer reach the surface of the Earth.D.Infrared radiation could no longer be transmitted from the Earth to outer spac

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