职称英语职称英语理工类2011年理工类职称英语等级考试A级模拟试题

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• 31In a laughter clinic, doctors

  A.laugh at their patients.

  B.encourage their patients to laugh.

  C.smile when they don't feel like laughing.

  D.never stop laughing.

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• 32The writer's attitude towards laughter is

  A.critical.

  B.doubtful.

  C.positive.

  D.negativ

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• 33According to the passage, a greenhouse is built to

  A.keep the plants warm.

  B.prevent air pollution.

  C.stop the greenhouse effect.

  D.produce useful gases.

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• 34Without the greenhouse gases, the earth would

  A.become warmer.

  B.be much colder.

  C.move more slowly.

  D.move quickly.

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• 35A major cause of the increase in the greenhouse gases is

  A.the burning of trees and crops.

  B.the building of many greenhouses.

  C.the burning of large quantities Of coal and oil.

  D.the flooding of large areas of the world.

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• 36According to the passage, chlorofluorocarbon gases differ from carbon dioxide in that

  A.they are more useful.

  B.they are much heavier.

  C.they are more efficient in making the' world colder.

  D.they are more effective in catching the heat from the sun.

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• 37A small increase in the earth's temperature may bring about

  A.a decline in agriculture.

  B.a drop of the sea level.

  C.the death of all animals.

  D.a delay in the greenhouse effect.

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