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2005-2010中石油职称英语考试真题阅读汇编(二)

2013-10-29 19:14:23 来源:新东方在线论坛发表评论

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  小编搜集整理了2005-2010中石油职称英语考试真题阅读汇编,供广大考生参考,希望对大家有所帮助,下面,就让我们快来开始复习吧!

  06年

  Reading Comprehension

  (书外文章) Television was not invented by any one person. Nor did it spring into being overnight. It developed gradually, over a long period, from the ideas of many people - each one building on the work of their predecessors’. The process began in 1873, when it was accidentally discovered that the electrical resistance of the element selenium (硒) varied in proportion to the intensity of the light shining on it. Scientists quickly recognized that this provided a way of transforming light variations into electrical signals. Almost immediately a number of schemes were proposed for sending pictures by wire (it was, of course, before radio).

  One of the earliest of these schemes was patterned on the human eye. Suggested by G. R. Carey in 1875. It envisioned (想像,展望) a mosaic (感光嵌镶幕) of selenium cells on which the picture to be transmitted would be focused by a lens system. At the receiving end there would be a similarly arranged mosaic made up of electric lights. Each selenium cell would be connected by an individual wire to the similarly placed light in the receiving mosaic. Light falling on the selenium cell would cause the associated electric light to shine in proportion. Thus the mosaic of lights would reproduce the original pictures, Had the necessary amplifiers(放大器)and the right kind of lights been available this system would have worked. But it also would have required an impractical number of connecting wires. Carey recognized this and in a second scheme proposed to “scan” the cells - transmitting the signal from each cell to its associated light, in turn, over a single wire. If this were done fast enough the retaining power of the eye would cause the resultant image to be seen as a complete picture.

  41. Which of the following is the best title for the passage?

  A. Television in the Electronic Era

  B. Harmful Effects of Television Viewing

  C. First Steps in the Invention of Television

  D. The Art of Television

  42. As it is used in the passage, the word “predecessors” (paragraph 1) means

  A. a teacher of the highest rank in a university department

  B. a person who plans and understands the making of machines, roads, bridges, etc.

  C. a person who teaches, esp. as a profession

  D. a person who held a position before someone else

  43. An important discovery in early television was the electrical resistance of___

  A. mosaics B. the human eye C. lenses D. the element selenium

  44. According to the information of the passage, the original picture would be reproduced by the

  A. signal of lights B. mosaic of lights C. element selenium D. selenium cells


本文关键字: 2005-2010 中石油 职称英语

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