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SSS 2009-05-22

时间:2010-05-18 01:42来源:互联网 提供网友:木渐浅。   字体: [ ]
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This is Scientific American's 60-second Science. I'm Karen Hopkin.

 

If you ever got picked on in the schoolyard, you might have wished for some sort of superpower, like unbeatable speed or maybe just the ability to completely disappear. Now scientists at the College of Wooster in Ohio say that you might have had a skill you didn’t realize: the uncanny ability to hear a bully1 coming.

An earlier study found that women hear approaching noises sooner than their bigger, brawnier male counterparts. Perhaps, the scientists thought, the same would hold true for scrawny specimens2 versus3 the truly buff. So they had 50 volunteers listen to a tone that sounds like it’s moving toward them. The listeners pressed a button when it sounded like the tone arrived. The scientists then assessed each subject’s strength and cardiovascular fitness. And they found that the 98-pound weaklings banged their buttons quicker than the well-muscled, because they perceived the threatening sound as being closer than it actually was. The finding got a hearing May 21st at the meeting of the Acoustical4 Society of America in Portland, Oregon. Such auditory overreacting, the scientists say, could be a survival mechanism5. So that the meek6, while waiting to inherit the earth, can avoid getting knocked onto it.

 

Thanks for the minute for scientific American's 60-second Science. I'm Karen Hopkin.

 


点击收听单词发音收听单词发音  

1 bully bully     
n.恃强欺弱者,小流氓;vt.威胁,欺侮
参考例句:
  • A bully is always a coward.暴汉常是懦夫。
  • The boy gave the bully a pelt on the back with a pebble.那男孩用石子掷击小流氓的背脊。
2 specimens 91fc365099a256001af897127174fcce     
n.样品( specimen的名词复数 );范例;(化验的)抽样;某种类型的人
参考例句:
  • Astronauts have brought back specimens of rock from the moon. 宇航员从月球带回了岩石标本。
  • The traveler brought back some specimens of the rocks from the mountains. 那位旅行者从山上带回了一些岩石标本。 来自《简明英汉词典》
3 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。
4 acoustical acoustical     
adj. 听觉的,声学的,音响学的
参考例句:
  • This system can set up acoustical resonances. 这种系统能产生共鸣。
  • The relevance of acoustical principles is by no means limited to sound and hearing. 声学原理并不仅仅适用于声音和听觉。
5 mechanism zCWxr     
n.机械装置;机构,结构
参考例句:
  • The bones and muscles are parts of the mechanism of the body.骨骼和肌肉是人体的组成部件。
  • The mechanism of the machine is very complicated.这台机器的结构是非常复杂的。
6 meek x7qz9     
adj.温顺的,逆来顺受的
参考例句:
  • He expects his wife to be meek and submissive.他期望妻子温顺而且听他摆布。
  • The little girl is as meek as a lamb.那个小姑娘像羔羊一般温顺。
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