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Practice Reading: Fill in the Blanks (Dropdown)
ID: #44347
Big Cities
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In big cities, people are estimated to endure more than 75 decibels (dB) of noise during the of the day from traffic, night-clubs and building works. In order to realise the seriousness of this, compare these noise levels to that of a passing train, which creates 70- 80 dB. A 1995 EU report states, that almost a fifth of Europeans are exposed to high noise levels. Although most complaints are voiced by older people, the young are not to the dangers noise causes. Blood pressure levels of children school in noisy areas have been found to be higher than those of children elsewhere. Loud noise (80-90 dB) for six hours a day begins to affect our hearing and even if we escape deafness in the long term, messages to the brain are and we find that our memory has started to go. Fortunately, the symptoms of stress by noise are recognisable (tense muscles and an increased heartbeat), so they should be preventable.
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