句间停顿:
  • 1S
  • 3S
  • 5S
语速: x 1.0
  • 速度0.8X
  • 速度1.0X
  • 速度1.2X
  • 速度1.5X
  • 速度1.8X
  • 速度2X
始终显示原文
欢迎使用 KMF 精听精研
坚持练习精听,反复听、吃透每个句子,能够快速 提升听力能力
开始精听
或按 「 空格」开始播放

段落1

This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?

点击显示原文

隐藏原文=

Forty-six million years ago, northwest Montana was a tropical forest of giant ferns, conifers and ginkgos.

点击显示原文

隐藏原文=

Tiny primates lived there, as did rhinos and horses and crocs.

点击显示原文

隐藏原文=

Along with some less charismatic creatures: mosquitoes.

点击显示原文

隐藏原文=

One of those millions of mosquitoes was then blown onto the surface of an ancient lake.

点击显示原文

隐藏原文=

Unable to lift off, it eventually sank to the bottom.

点击显示原文

隐藏原文=

And became a fossil.

点击显示原文

隐藏原文=

The fossil mosquito was recently found and analyzed.

点击显示原文

隐藏原文=

Scientists found that its belly contained iron, bound up in a molecule called heme, the compound in blood that carries oxygen.

点击显示原文

隐藏原文=

So it appears this sucker died and fossilized with a bellyful of blood, the only known specimen.

点击显示原文

隐藏原文=

The findings appear in the Proceedings of the National Academy of Sciences.

点击显示原文

隐藏原文=

Now I know you're thinking.

点击显示原文

隐藏原文=

"This fossilized tree sap waited for millions of years, with the mosquito inside.

点击显示原文

隐藏原文=

Until Jurassic Park scientists came along."

点击显示原文

隐藏原文=

Well, not quite. DNA breaks down too quickly.

点击显示原文

隐藏原文=

And this skeeter lived 20 million years after dinos went extinct.

点击显示原文

隐藏原文=

The researchers say it may have dined on birds--which are, in some sense, blood relatives.

点击显示原文

隐藏原文=

Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.

点击显示原文

隐藏原文=
[ < 空格 > ]
当前句 /
/
  • 段落1
  • 第 1 句
  • 第 2 句
  • 第 3 句
  • 第 4 句
  • 第 5 句
  • 第 6 句
  • 第 7 句
  • 第 8 句
  • 第 9 句
  • 第 10 句
  • 第 11 句
  • 第 12 句
  • 第 13 句
  • 第 14 句
  • 第 15 句
  • 第 16 句
  • 第 17 句
  • 第 18 句

+ 创建收藏夹
保存 取消