Astronomers at the University of California discovered one of the most distant ______

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• 第1题：

  In industrialized countries, what businesses are scarcely affected by climate change
  A．Water systems.
  B．Energy and property.
  C．Services.
  D．Coastal activities.
  

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• 第2题：

  Which of the following activities must consider climate as an important factor
  A．Microelectronics.
  B．Communications.
  C．Banking.
  D．Farming.
  

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• 第3题：

  If the whole opera, on ______ beforehand, a great deal of time and money would have been lost.
  A．was not planned
  B．has not been planned
  C．had not been planned
  D．were not planned
  

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• 第4题：

  I hope all the precautions against air pollution, ______ suggested by the local government, will be seriously considered here.
  A．while
  B．since
  C．after
  D．as
  

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• 第5题：

  Executives of the company enjoyed an ______ lifestyle of free gifts, fine wines and high salaries.
  A．exquisite
  B．extravagant
  C．exotic
  D．eccentric
  

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• 第6题：

  Professor Smith and Professor Brown will ______ in presenting the series of lectures on American literature.
  A．alter
  B．alternate
  C．substitute
  D．exchange
  

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