Unit 11

Unit 11 Turn it down! LESSON 21 Dad, that music’s loud! Turn it down! Sorry, Lucy! Am I interrupting your homework? It's not that, Dad. We had a lesson today about hearing. Look at this. One person in seven in the UK is deaf, and many of them are deaf because of noise. For most people, the safe limit is 85 decibels(dB) for continuous noise, and 103 dB for sudden noise. After fifteen minutes at 105 dB, most people will have some damage to their hearing. Music in nightclubs is often much louder than the safe limit. 19% of young people listen to their MP3players at 105 to 110 dB for many hours. 75% of them will experience ‘ringing in the ears', and they will feel a bit deaf. If they are lucky, this will last for one or two days. If they are unlucky, the damage will last for ever. You're always listening to loud music, Dad. If you aren't careful, you'll become deaf. Sorry, Lucy! What did you say? Oh, Dad! It isn't funny! Of course it isn't. And I will turn the sound down. I promise!

把声音关小! 爸爸，音乐声太大了!关小一些吧! 对不起，露西!打扰你做作业了吧? 不是因为这个，爸爸。今天我们上了一课，是关于听觉的。看看这个。 在英国，每7个人中就有1个人失聪，而很多人是因噪音致聋的。 对于大多数人来说，持续声音的安全限度是85分贝，突然发出的声音的安全限度是103 分贝。接触105分贝的声音15分钟后，大多数人的听力会受到损害。 夜总会的音乐声经常会大大超过安全限度。19%的年轻人会连着几小时听MP3播放的音乐，分贝都在105到110之间。他们中有75%的人会感觉耳鸣，并会感到有点儿听不清声音。如果他们幸运的话，这种现象会持续一两天。但如果他们不够幸运的话，这种伤害就永远无法弥补了。 爸爸，你总是听很吵的音乐。如果你不小心，就会失聪的。 对不起，露西!你刚才说什么? ‘噢,爸爸!这可不是闹着玩的! 当然不是。我会把声音关小的。我保证!

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