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60秒科学:听MP3的时候请注意保护耳朵

时间:2010-10-20 05:41来源:互联网 提供网友:ou4100   字体: [ ]
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Recent hearing tests on teens show an increase in hearing loss over the last generation, possibly as a result of increased earbud use.

Are you listening to me through headphones? Because here’s a sample of what might be harming the ears of teenagers. [low-volume beating bass]

Just kidding—the last thing we want to do is damage your hearing. But that might be happening to adolescents. According to a study in the Journal of the American Medical Association, adolescents show a significant increase in hearing loss since the early '90s.

The study used two surveys. The first involved almost 3,000 adolescents tested between 1988 to 1994. The second involved 1,800 people tested in 2005 and 2006. There was a 31 percent increase in any kind of hearing loss in the second group versus1 the earlier one.

This problem affects millions of teens—one in five, according to the later survey. It can harm communication, social skills and education.

The researchers don’t make causal links, though they caution that loud sound exposure from listening to music might be particularly significant to adolescents. The rise in hearing loss does correlate with a rise in MP3 players and their earbuds.

Speaking of which—check out these sounds
 


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1 versus wi7wU     
prep.以…为对手,对;与…相比之下
参考例句:
  • The big match tonight is England versus Spain.今晚的大赛是英格兰对西班牙。
  • The most exciting game was Harvard versus Yale.最富紧张刺激的球赛是哈佛队对耶鲁队。
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