George Valensi’s patent lasted until 1971 because ________.

试卷相关题目

• 1Which of the following is TRUE according to the passage、

  A.When a patent becomes out of effect, it can be re-patented or extended if necessary.

  B.It is necessary for an inventor to apply for a patent before he makes his invention publi

  C.C.A patent holder must publicize the details of his invention when its legal period is over.

  D.One can get all the details of a patented invention from a library attached to the patent offic

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• 2The passage is mainly about ________.

  A.an approach to patents

  B.the application for patents

  C.the use of patents

  D.the access to patents

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• 3The author’s attitude towards industrialism might best be summarized as one of ________.

  A.approval

  B.dissatisfaction

  C.suspicion

  D.tolerance

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• 4To solve the present social problems the author suggests that we should ________.

  A.resort to the production mode of our ancestors

  B.offer higher wages to the workers and employees

  C.enable man to fully develop his potentialities

  D.take the fundamental realities for granted

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• 5From the passage we can infer that real happiness of life belongs to those ________.

  A.who are at the bottom of the society

  B.who are higher up in their social status

  C.who prove better than their fellow-competitors

  D.who could keep far away from this competitive world

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• 6The word “plagiarize” (Line 8, Par

  A.5) most probably means “________.”A.steal and use

  B.give reward to

  C.make public

  D.take and change

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• 7From the passage we learn that ________.

  A.an invention will not benefit the inventor unless it is reduced to commercial practice

  B.products are actually inventions which were made a long time ago

  C.it is much cheaper to buy an old patent than a new one

  D.patent experts often recommend patents to others by conducting a search through dead patents

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