Internationally renowned scientists sent lichen samples to Nylander because

试卷相关题目

• 1The dog saw his _____ in the pool of water.

  A.reflect

  B.reflection

  C.bone

  D.imagination

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• 2Exchanges of language and culture were a direct result of _____ .

  A.commence

  B.commerce

  C.comment

  D.commentary

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• 3When he was director of the company his first _____ was to bring about better working conditions.

  A.accomplishment

  B.defeat

  C.accumulation

  D.accompany

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• 4Lyndon Johnson _____ John Kennedy as president of the United States.

  A.succeeded in

  B.succeeded

  C.assisted

  D.followed by

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• 5Peter was so _____ in his novel that he forgot about his dinner cooking in the oven.

  A.excited

  B.absorbed

  C.excelled

  D.obliged

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• 6Which 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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• 7All 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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• 8According 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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• 9How could William Nylander best be described、

  A.degenerate

  B.domineering

  C.ingenious

  D.anxious

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• 10Given 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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