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SSS 2010-08-27

时间:2010-09-03 06:11来源:互联网 提供网友:yu6707   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.

Are you listening to me through headphones? Because here’s a sample of what might be harming the ears of teenagers.

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.

Thanks for the minute. For Scientific American's 60-Second Science, I'm Cynthia Graber.
 


点击收听单词发音收听单词发音  

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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