英语 英语 日语 日语 韩语 韩语 法语 法语 德语 德语 西班牙语 西班牙语 意大利语 意大利语 阿拉伯语 阿拉伯语 葡萄牙语 葡萄牙语 越南语 越南语 俄语 俄语 芬兰语 芬兰语 泰语 泰语 泰语 丹麦语 泰语 对外汉语

SSS 2010-10-13

时间:2010-11-04 05:18来源:互联网 提供网友:ob8617   字体: [ ]
特别声明:本栏目内容均从网络收集或者网友提供,供仅参考试用,我们无法保证内容完整和正确。如果资料损害了您的权益,请与站长联系,我们将及时删除并致以歉意。
    (单词翻译:双击或拖选)

This is Scientific American’s 60-Second Science, I’m Karen Hopkin. This will just take a minute.

 

Blackjack, slot machines, good ol’ Texas hold’em. People love to gamble. And we’re not the only ones. A new study shows that pigeons will also pass up a sure thing in the hopes of a big payoff. The work appears in the Proceedings1 of the Royal Society.

 

Theories about foraging2 say that animals should stick with the proverbial bird in the hand, especially when it comes to food. Eating is key to survival, so clever critters shouldn’t take unnecessary chances. But these new findings suggest that pigeons don’t always play it safe.

 

Scientists set up an avian casino in which pigeons could place their bets on one of two symbols. Peck at symbol 1 and you get three food pellets. Never more, never less. Symbol 2 was the wildcard. Choose that one and 20 percent of the time, you’ll hit the jackpot: 10 food pellets. The rest of the time you’ll get nothing. But the lure3 of the big win was too hard to resist: pigeons chose to gamble more than 80 percent of the time, even though, on average, that path paid out fewer pellets.

 

Perhaps it’s the joy of a pleasant surprise. Because even for a literal bird brain, hitting the lottery4 is a hoot5.

 

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 proceedings Wk2zvX     
n.进程,过程,议程;诉讼(程序);公报
参考例句:
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
2 foraging 6101d89c0b474e01becb6651ecd4f87f     
v.搜寻(食物),尤指动物觅(食)( forage的现在分词 );(尤指用手)搜寻(东西)
参考例句:
  • They eke out a precarious existence foraging in rubbish dumps. 他们靠在垃圾场捡垃圾维持着朝不保夕的生活。 来自《简明英汉词典》
  • The campers went foraging for wood to make a fire. 露营者去搜寻柴木点火。 来自辞典例句
3 lure l8Gz2     
n.吸引人的东西,诱惑物;vt.引诱,吸引
参考例句:
  • Life in big cities is a lure for many country boys.大城市的生活吸引着许多乡下小伙子。
  • He couldn't resist the lure of money.他不能抵制金钱的诱惑。
4 lottery 43MyV     
n.抽彩;碰运气的事,难于算计的事
参考例句:
  • He won no less than £5000 in the lottery.他居然中了5000英镑的奖券。
  • They thought themselves lucky in the lottery of life.他们认为自己是变幻莫测的人生中的幸运者。
5 hoot HdzzK     
n.鸟叫声,汽车的喇叭声; v.使汽车鸣喇叭
参考例句:
  • The sudden hoot of a whistle broke into my thoughts.突然响起的汽笛声打断了我的思路。
  • In a string of shrill hoot of the horn sound,he quickly ran to her.在一串尖声鸣叫的喇叭声中,他快速地跑向她。
本文本内容来源于互联网抓取和网友提交,仅供参考,部分栏目没有内容,如果您有更合适的内容,欢迎点击提交分享给大家。
------分隔线----------------------------
TAG标签:   SSS  托福素材
顶一下
(1)
100%
踩一下
(0)
0%
最新评论 查看所有评论
发表评论 查看所有评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
验证码:
听力搜索
推荐频道
论坛新贴