关注微信领¥50

百门课程¥0元


50万+已关注

科学美国人60秒:城市与乡村的红腹灰雀对比-托福听力下载

2016-11-29 15:14:35来源:科学美国人60秒

点击查看>>科学美国人60秒音频:城市与乡村的红腹灰雀对比

  科学美国人60秒中英文翻译:城市与乡村的红腹灰雀对比

  科学美国人60秒英文文本

  City dwellers can attest that the animals they share the city with—the pigeons, rats, roaches—can be pretty brazen when they're prowling for a bite.

  While visiting Barbados, McGill University neurobiologist Jean-Nicolas Audet, noticed that local bullfinches were accomplished thieves.

  "They were always trying to steal our food.

  And we can see those birds entering in supermarkets, trying to steal food there."

  And that gave him an idea.

  "Since this bird species is able to solve amazing problems in cities, and they're also present in rural areas, we were wondering" are the rural birds also good problem-solvers, and they just don't take advantage of their abilities?

  Or are they fundamentally different?

  So Audet and his McGill colleagues captured Barbados bullfinches, both in the island's towns and out in the countryside.

  They then administered the bird equivalent of personality and IQ tests:assessing traits like boldness and fear, or timing how quickly the finches could open a puzzle box full of seeds.

  And it turns out the city birds really could solve puzzles faster.

  They were bolder, too, except when it came to dealing with new objects—perhaps assuming, unlike their more naive country cousins, that new things can either mean reward…or danger.

  The study is in the journal Behavioral Ecology.

  The city birds bested their country counterparts in another trait:they have more robust immune systems, possibly from scavenging food and water in dirty places.

  Which suggests that sometimes, a city's dirt and grit could be the very thing that gives avian residents a wing up.

  中文翻译请点击下一页

为你特别匹配的托福超值课程,快速提分先人一步!
  • 托福12月公益课(第2期)

    托福12月公益课(第2期)

    特点:1天1节公益课,讲干货有实力,高效备考,快速突破!

    课时:10小时

    查看详情
  • 【活动价】新东方托福名师在线一对一(体验课)

    【活动价】新东方托福名师在线一对一(体验课)

    适合人群:想体验新东方在线致赢托福1对1辅导冲分课程的同学

    体验课时:30分钟

    查看详情
  • 大学生旗舰直达班 (冲110分)

    【知心托福】大学生旗舰直达班 (冲110分)

    适合人群:托福目标分数110分!

    课时:343

    查看详情
  • 大学生旗舰直达班 (冲100分)

    【知心托福】大学生旗舰直达班 (冲110分)

    适合人群:托福目标分数100分!

    课时:331

    查看详情
  • 大学生旗舰直达班 (冲90分)

    【知心托福】大学生旗舰直达班 (冲90分)

    适合人群:托福目标分数90分!

    课时:310

    查看详情
全部课程>>
单项突破
直播课堂

更多托福课程
新东方25年教学经验沉淀
托福考生必修课
托福考生,高效提分,安心之选

查看详情>>
更多>>
更多课程>>
更多>>
更多内容
更多>>
距结束 : 00 00 00 00

4小时甩掉“Broken English”,直击托福24+

实战经验分享三人成团免费学

口语6大题精讲;16天社群打卡学习&答疑 活动日期 : 2018.11.08-2018.12.13

价格 : ¥69

678人 已报名

查看详情
更多>>
更多公开课>>
更多>>
更多课程>>