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Life gets noisier every day and very few people can free from noise of some sort or another.Itdoesn’t matter where you live—in the middle of a modem city.or a faraway village——the chancesthat you will be disturbed by jet aeroplanes,transistor radios,oil powered engines,etc.,are almosteverywhere.We seem to be getting used to noise,t00.Some people feel quite lonely without back—ground music while they are workin9.

Scientific tests have shown that total silence can be very frightening experience for humanbeings.However,some people enjoy listening to pop music which is very loud,and this can do harmto their eardrums(耳鼓).The noise level in some disco is far above.the usual safety level for heavy,noUstnal areas.

One recent report about noise and concentration(专心)suggested that although a lot of peoplesay that any noise disturbs their concentration,what really affects their ability to concentrate is achange in the level of noise.It goes on to say that a background noise,which doesn’t change toomuch(music,for example)may even help people to concentrate.

From this passage,the pollution of noise________. 查看材料

  • A.doesn’t matter much
  • B.has become worse everywhere
  • C.has become better in big cities
  • D.has become better in villages
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  • A.show how lazy cats are
  • B.talk about the habits of cats
  • C.tell about famous people and their habits
  • D.persuade people to take naps

Naps usually last_________. 查看材料

  • A.three hours
  • B.less than half an hour
  • C.forty-five minutes
  • D.fifty-five minutes

Which of the following statements is NOT true? 查看材料

  • A.People should take their naps secretly.
  • B.Cats have the same moods as people.
  • C.Some famous people take cat naps.
  • D.Some people have full energy after they take cat naps.
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