The reduction of the possible hazards in food ultimately depends on ________.

试卷相关题目

• 1By saying “they employ chemical warfare” (Line 4, Par

  A.2), Bruce Ames means “________”.A.plants produce certain chemicals to combat pests and diseases

  B.plants absorb useful chemicals to promote their growth

  C.farmers use man-made chemicals to dissolve the natural chemicals in plants

  D.farmers use chemicals to protect plants against pests and diseases

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• 2The author considers it impossible to obtain no-risk food because ________.

  A.no food is free from pollution in the environment

  B.pesticides are widely used in agriculture

  C.many vegetables contain dangerous natural chemicals

  D.almost all foods have additives

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• 3What does the author think of the Americans’ view of their food、

  A.They overstate the government’s interference with the food industry.

  B.They are overoptimistic about the safety of their food.

  C.They overestimate the hazards of their foo

  D.D.They overlook the risks of the food they eat.

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• 4                                       Passage ThereQuestions 17 to 20 are based on the passage you have just heard.

  A.They will be much bigger.

  B.They will have more seats.

  C.They will have three wheels.

  D.They will need intelligent drivers.

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• 5                                  Passage TwoQuestions 14 to 16 are based on the passage you have just heard.

  A.They often go for walks at a leisurely pace.

  B.They usually have a specific purpose in mind.

  C.They like the seaside more than the countryside.

  D.C.They like the seaside more than the countrysid

  E.D.They seldom plan their leisure activities in advance.

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• 6What is the message the author wants to convey in the passage、

  A.Eating and drinking have become more hazardous than before.

  B.Immediate measures must be taken to improve food production and processing.

  C.Health food is not a dream in modern society.

  D.There is reason for caution but no cause for alarm with regard to food consumption.

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• 7Which of the following titles is most appropriate to the passage、

  A.Polarity Reversal: A Fantastic Phenomenon of Nature.

  B.Measurement of the Earth’s Magnetic-Field Intensity.

  C.Formation of the Two Poles of the Earth.

  D.A New Approach to the Study or Geophysics.

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• 8The word “flip” (Line 6, Par

  A.2) most probably means “________”.A.decline

  B.intensify

  C.fluctuate

  D.reverse

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• 9What have the two French geophysicists discovered in their research、

  A.Some regularity in the changes of the earth’s magnetic field.

  B.Some causes of the fluctuation of the earth’s magnetic field.

  C.The origin of the earth’s magnetic fiel

  D.D.The frequency of polarity reversals.

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• 10The French geophysicists’ study is different from currently prevailing theories in ________.

  A.its identification of the origin of the earth’s magnetic field

  B.the way the earth’s magnetic intensity is measured

  C.its explanation of the shift in the earth’s polarity

  D.the way the earth’s fluctuation rhythm is defined

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