新东方网>BBC>BBC英语教学>潮流英语>媒体英语>正文

海獭学会使用工具的时间早于海豚

2017-03-27 17:38

来源:BBC

作者:

媒体英语

Sea otters ahead of dolphins in using tools 海獭学会使用工具的时间早于海豚

文字稿

人们经常能看到海獭仰面浮在水上用石头敲开贝壳类动物进食的场景。科学家说,海獭可能很久以前就已经学会把石头当作工具使用了,而且似乎比其它的海洋哺乳动物都要早。一项遗传研究分析了在加利福尼亚海岸附近生活的  100 多只海獭,结果表明,在几百万年前海獭的祖先就已经开始表现出这类行为了。请听 Helen Briggs 的报道。

Sea otters are often seen floating on their backs hammering at clams with rocks. They break open the shells to reveal a tasty meal inside.

New research suggests, even the ancestors of sea otters living millions of years ago knew how to do this. That's according to a genetic study of otters living off the Californian coast.

They are not the only marine mammals to use tools. Dolphins in Australia have been seen to use sponges to protect their noses when scouting for fish on the sea floor. But in dolphins, this seems to be a relatively new invention, happening less than 200 years ago. Evidence, say the scientists, that sea otters are very smart and have a natural ability to use tools.

词汇表

sea otters 海獭
on their backs 仰面躺着
hammering 用力锤打、敲击
genetic study 遗传研究
marine mammals 海洋哺乳动物
sponges (天然)海绵
scouting 寻找,搜索
invention 自发的新行为、新活动
natural ability 天生的能力,本能

测验

请听报道并回答下列问题。

1. What are sea otters often seen doing, according to the text?

2. What have dolphins in Australia been seen to use tools for? 

3. True or false? In sea otters, using tools seems to be a relatively recent activity.

4. Which word in the text means ‘the information that shows if something is true or not'?

答案

1. What are sea otters often seen doing, according to the text?
Sea otters are often seen floating on their backs hammering at clams with rocks, according to the text.

2. What have dolphins in Australia been seen to use tools for? 
They have been seen to use sponges to protect their noses when scouting for fish on the sea floor.

3. True or false? In sea otters, using tools seems to be a relatively recent activity.
False. New research suggests, even the ancestors of sea otters living millions of years ago knew how to use tools.

4. Which word in the text means ‘the information that shows if something is true or not'?
Evidence.

资料下载

  • 七年级上、下册英语词汇

    3342次下载 点击下载
  • 八年级上、下册英语词汇

    2621次下载 点击下载
  • 九年级全册英语单词表

    4734次下载 点击下载
  • 中考英语1600个词汇手册

    1854次下载 点击下载
  • 高考英语词汇必备3500

    1391次下载 点击下载
  • 新概念英语1-4册全套教材

    1391次下载 点击下载
名称名称
300次下载

微信扫码关注"新东方网"服务号

回复""立刻获取!

猜你喜欢

  • 听力
  • 口语
  • 阅读
  • 娱乐
  • 词汇
  • 写作

            新东方英语辅导专区

            班级名称 上课地点 上课时间 费用 详细

            焦点推荐

            版权及免责声明

            凡本网注明"稿件来源:新东方"的所有文字、图片和音视频稿件,版权均属新东方教育科技集团(含本网和新东方网) 所有,任何媒体、网站或个人未经本网协议授权不得转载、链接、转贴或以其他任何方式复制、发表。已经本网协议授权的媒体、网站,在下载使用时必须注明"稿件来源:新东方",违者本网将依法追究法律责任。

            本网未注明"稿件来源:新东方"的文/图等稿件均为转载稿,本网转载仅基于传递更多信息之目的,并不意味着赞同转载稿的观点或证实其内容的真实性。如其他媒体、网站或个人从本网下载使用,必须保留本网注明的"稿件来源",并自负版权等法律责任。如擅自篡改为"稿件来源:新东方",本网将依法追究法律责任。

            如本网转载稿涉及版权等问题,请作者见稿后在两周内速来电与新东方网联系,电话:010-60908555。

            热搜关键词