At what temperature does the superconducting ceramic lose its resistance、

试卷相关题目

• 1Compared to common electrical conductors，superconductors

  A.have little or no electrical resistance．

  B.Can be used for along time．

  C.are not energy-efficient．

  D.can be made easily．

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• 2What is the benefit of the revolution mentioned in the first paragraph、

  A.With a flip of swish．electricity can be transmitted．

  B.Other American cities can benefit from the high、performance cables．

  C.Great amounts of power can be conserved．

  D.Detroit will first receive electricity transmitted by the new electrical cables

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• 3The word “expertise’’ in line 3 could be best replaced by

  A.“experts”．

  B.“scientists”． ．

  C.“scholars”．

  D.“special knowledge”．

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• 4When was the Fraunhofer Society founded、

  A.In 1940.

  B.Last year．

  C.After the unification．

  D.In 1949.

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• 5The Fraunhofer Society is the largest organisation for applied technology in

  A.Asia．

  B.USA．

  C.Europe．

  D.Africa．

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• 6What element enables the ceramic tape to lower its temperature、

  A.Copper．

  B.Liquid nitrogen．．

  C.Clay．

  D.Calcium．

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• 7According to the last paragraph，which of the following statements is NOT true、

  A.Other cities hope they Can also conserve power．

  B.Other cities hope they Can use superconducting cables soon．

  C.Superconductors waste less power because of their low resistance．

  D.The Fribie experiment is not successful．

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• 8According to the passage，the science of the future is likely to be

  A.electronics．

  B.biotechnology．

  C.genetic engineering．

  D.nuclear technology．

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• 9Organic chemistry helps to produce materials that are

  A.as good as w001.

  B.as good as an insect’s body．

  C.not as good as natural materials．

  D.better than natural materials．

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• 10According to the．passage，it may soon be possible

  A.to make something as good as human skin．

  B.to produce drugs without side effects．

  C.to transplant human organs．

  D.to make artificial hearts and eyes．

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