The term“Green Revolution”refers to

试卷相关题目

• 1Given the present growth rate of the world′s population and our ability to produce food,

  A.the United States will be able to feed half the world by 2025.

  B.the future will see no more hunger.

  C.the developed nations will change their eating habits.

  D.we will encounter very serious problems in the near futur

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• 2How could William Nylander best be described、

  A.degenerate

  B.domineering

  C.ingenious

  D.anxious

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• 3According to accepted nineteenthcentury theories,which two elements form the composition of lichens、

  A.iodine and chemical reagents

  B.algae and fungi

  C.hypochlorite and iodine

  D.chemical reagents and atmospheric chemicals

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• 4All of the following are true about Nylander except

  A.he was the first to use chemical reagents in the taxonomy of lichens.

  B.he believed that lichens were simple plants.

  C.he was an esteemed lichenologist.

  D.he taught botany at the University of Paris.

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• 5Which of the following is not true、

  A.Nylander accepted his colleagues′ theories on the composition of lichens.

  B.Eighty percent of lichens bear Nylander′s name.

  C.Today lichens are used to detect atmospheric pollution.

  D.Most botanists consider lichens to be a compound species.

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• 6Each year,the world′s food reserves reduce by

  A.10 million tons.

  B.20 million tons.

  C.30 million tons.

  D.40 million tons.

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• 7It is expected that crop yields will drop,especially in underdeveloped countries,mainly because of

  A.disastrous weather.

  B.weak strains.

  C.finance shortages.

  D.revolutions.

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• 8Which of the following is true、

  A.Green Revolution did not end until 1972.

  B.The shortage of chemical fertilizers was caused by the short supply of petroleum.

  C.Every ton of petroleumbased fertilizers can help increase ten tons of crop yields.

  D.By the year of 2025,one million children will die of hunger each month in the world.

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• 9The aim of controlled scientific experiments is _____

  A.to explain why things happen.

  B.to explain how things happen.

  C.to describe selfevident principles.

  D.to support Aristotelian scienc

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• 10What principles most influenced scientitic thought for two thousand years、

  A.the speculations of Thales.

  B.the forces of electricity,magnetism,and gravity.

  C.Aristotle′s natural science.

  D.Galileo′s discoveries

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