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Life gets noisier every day and very few people can be free from noise of some sort or another. It doesn’t matter  小题1: you live — in the middle of a modern city, or a faraway village — the chances   小题2: you will be disturbed by jet airplanes, transistor radios, oil-powered engines, etc, are almost everywhere. We seem   小题3: (get) used to noise, too. Some people feel quite lonely   小题4: background music while they are working.
Scientific tests have shown that total silence can be very   小题5: (frighten) experience for human beings.   小题6: , some people enjoy listening to pop music which is very loud, and this can do harm to   小题7: eardrums (耳鼓). The noise level in some disco is far above the usual safetylevel for heavy industrial areas.
One recent report about noise and concentration   小题8:  (suggest) that although a lot of people say that any noise disturbs their concentration,   小题9:  really affects their ability to concentrate is a change in the level of noise. It goes on to say that a background noise,   小题10:  doesn’t change too much (music, for example), may even help people to concentrate.