反馈建议 切换旧版 去做题 结束训练
全文精听 逐句精听
句间停顿： 关
  • 关
  • 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

listen to a conversation between a student and her marine biology professor.

点击显示原文

隐藏原文=

Sorry to interrupt. Professor Lang,

点击显示原文

隐藏原文=

looks like you\'re cramming for a test or something.

点击显示原文

隐藏原文=

Oh, I subscribe to three marine biology journals.

点击显示原文

隐藏原文=

Advances in my field come fast and furious.

点击显示原文

隐藏原文=

I have to stay one step ahead of my students.

点击显示原文

隐藏原文=

So what\'s on your mind, Sarah,

点击显示原文

隐藏原文=

I wanted you to know that

点击显示原文

隐藏原文=

letting me take the makeup midterm exam in your office yesterday really meant a lot.

点击显示原文

隐藏原文=

As I mentioned, both of my parents had to go overseas for conferences last week.

点击显示原文

隐藏原文=

That almost never happens.

点击显示原文

隐藏原文=

So I had to go back home on Thursday and Friday to look after my little brother.

点击显示原文

隐藏原文=

Glad it worked out.

点击显示原文

隐藏原文=

So what did you think of the midterm?

点击显示原文

隐藏原文=

I felt pretty confident,

点击显示原文

隐藏原文=

except for one question,

点击显示原文

隐藏原文=

maybe because I missed your Thursday lecture.

点击显示原文

隐藏原文=

Oh, I thought we\'d arrange for you to attend that class session remotely.

点击显示原文

隐藏原文=

The audiovisual system in the lecture halls allows students to do this, as long as their professor gives them the access code.

点击显示原文

隐藏原文=

I didn\'t forget to email it to you. Did I?

点击显示原文

隐藏原文=

No, I got your email and was planning to attend class through my laptop,

点击显示原文

隐藏原文=

but my brother\'s teacher called that morning.

点击显示原文

隐藏原文=

He fell on the playground and landed on his elbow.

点击显示原文

隐藏原文=

Oh, no

点击显示原文

隐藏原文=

yeah, it wasn\'t serious. But by the time I got back from the doctor\'s office, class was over.

点击显示原文

隐藏原文=

That\'s a shame. Sarah,

点击显示原文

隐藏原文=

I haven\'t granted your exam yet, but I\'m curious,

点击显示原文

隐藏原文=

which question Did you have trouble with?

点击显示原文

隐藏原文=

I wasn\'t sure about the marine mammals you asked about, like the blue whale,

点击显示原文

隐藏原文=

why natural selection led it to grow to such a massive size, much bigger than the largest dinosaurs were.

点击显示原文

隐藏原文=

I wrote that whales grow big because, well, because they can water so liberating.

点击显示原文

隐藏原文=

Weights just not an issue if you don\'t have to support yourself on legs like land mammals do.

点击显示原文

隐藏原文=

Yes, that\'s what intuition tells us.

点击显示原文

隐藏原文=

But, and we did cover this in the class you missed,

点击显示原文

隐藏原文=

water actually has the opposite effect.

点击显示原文

隐藏原文=

Water doesn\'t allow mammals to grow big.

点击显示原文

隐藏原文=

Marine mammals have to be big in order to survive.

点击显示原文

隐藏原文=

Why？ body heat.

点击显示原文

隐藏原文=

If the mammals were very small, they\'d lose too much body heat too fast.

点击显示原文

隐藏原文=

They couldn\'t ingest enough calories to keep warm.

点击显示原文

隐藏原文=

Bigger mammal bodies retain more body heat,

点击显示原文

隐藏原文=

but there\'s a limit on the upper end of the size spectrum too.

点击显示原文

隐藏原文=

If the blue whale got any bigger, it wouldn\'t be able to consume enough calories to support its massive body.

点击显示原文

隐藏原文=

Fish don\'t have this problem, by the way,

点击显示原文

隐藏原文=

their metabolism differs significantly from that of mammals.

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
  • 第 19 句
  • 第 20 句
  • 第 21 句
  • 第 22 句
  • 第 23 句
  • 第 24 句
  • 第 25 句
  • 第 26 句
  • 第 27 句
  • 第 28 句
  • 第 29 句
  • 第 30 句
  • 第 31 句
  • 第 32 句
  • 第 33 句
  • 第 34 句
  • 第 35 句
  • 第 36 句
  • 第 37 句
  • 第 38 句
  • 第 39 句
  • 第 40 句
  • 第 41 句
  • 第 42 句
  • 第 43 句
  • 第 44 句
  • 第 45 句

+ 创建收藏夹
保存 取消