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2005-2010中石油职称英语考试真题阅读汇编(六)

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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!

  10年

  III. Reading Comprehension

  Section A

  Directions: There are 5 passages in this section. Each passage is followed by 4 questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice and mark your answer on the Answer Sheet.

  Questions 41 to 44 are based on the following passage:

  By direct observations and many experiments, biologists have discovered that practically all animals have some sense of hearing or vibration. Earthworms feel vibrations in the soil, fish can be trained to respond to certain tones, male mosquitoes are attracted by the sound of the female, and frogs will respond to a tape

  recording of their own voices.

  The inner ear is composed of delicate membranes which bear dense patches of specialized cells called maculae. Each of these collections of cells can carry a message to the brain. What message is carried by a macula depends upon how it is affected. The message which is carried is not, however, always connected with the hearing sense. For instance, a certain kind of tadpole can tell the depth of the water it is swimming in by the pitch of a tone which is produced by its own lungs.

  In the human and all other mammals, the macula has developed into an organ which can easily be seen. This organ is called the cochlea. This spiral shaped organ contains the macula itself and it is called "organ of Corti" after its discoverer. If you have ever seen a snail shell, you know how a cochlea looks.

  When sound waves enter the cochlea, which is really a tube coiled around, they set a membrane into a back and forth motion and cause a new wave. This is something like the way in which high and low sounds are produced by a flute or whistle. The high sounds are produced when the air is prevented by the holes from going through, while the low sounds are produced by allowing more of the air to pass. All this is what produces the differences between high and low sounds. The loudness of a sound is evidently produced by how much the membrane is cause to move.

  Whether or not hearing is really produced in all animals by the effect of pressure is not definitely known by scientists as yet. We do know, however, that nature has set up some very delicate hearing mechanisms for its creatures. Scientists must explore much further for more knowledge about how animals use their ears.

  41. According to the article practically all animals have some sense of____.

  A. direction

  B. hearing

  C. vibration

  D. both B and C

  42. The cochlea is found____.

  A. in fish

  B. only in humans

  C. in all animals

  D. in all mammals

  43. Scientists know____.

  A. that all animals have a cochlea

  B. very little about hearing in animals

  C. that mosquitoes cannot hear sounds

  D. that hearing is produced by air pressure in mammals.

  44. The article is mostly about ____.

  A. how sound is produced

  B. learning by observing

  C. the workings of the inner ear

  D. outer ear formation in various animals


本文关键字: 2005-2010 中石油 职称英语

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