To call for a delay on commercial nanotech , critics of nanotech make use of____  .

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• 1K. Eric Drexler in his book predicts a future world with sufficient material , because____  .

  A.man-made plants could replace real plants and grow more quickly

  B.plants produced by nanotech would be as efficient as today’s solar cells

  C.man-made bacteria would be widespread and capable of self-replicating

  D.humans could create copies of anything alive with high technology

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• 2The purpose of this article is to____  .

  A.compare the traditional diet with today’s diet of Asian children

  B.find reasons for increased food consumption of Asian people

  C.explain why many Asian children are overweight nowadays

  D.prove the relationship between fatness and indoor play

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• 3Some parents feel bad when their children look thin , because____  .

  A.their children don’t love eating and drinking

  B.their children don’t have a good physical condition

  C.they feel that they don’t take good care of their children

  D.they feel that they are not wealthy enough to afford ‘quality food’

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• 4According to this passage , the ‘quality food’ fed by some parents is actually____  .

  A.healthful food

  B.qualified food

  C.agreeable food

  D.high-calorie food

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• 5Which of the following is NOT true according to the passage 、

  A.Asian people tend to save more money .

  B.Asian children depart from their diet tradition .

  C.Asian children eat big meals on more occasions .

  D.Culture contributes to the fatness of Asian children .

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• 6Opponents of Bill Joy would NOT agree to____  .

  A.control nanotech export

  B.ban nanotech research to avoid any possible dangers

  C.put forth bills on nanotech research and development

  D.establish a certification system for annotech companies

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• 7Which of the following statements best summarizes the main idea of the passage 、

  A.Nanotech should not be put into wrong use in the military field .

  B.The government should regulate products that could be dangerous .

  C.Nanotech regulations should be established in spite of the divided opinions .

  D.The media should not take advantage of the science fiction aspects of nanotech .

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