关闭图标
log图标

toefl.viplgw.cn

  • 使用手机注册
  • 使用邮箱注册
  • 手机号不能为空!

    验证码不能为空!

    用户名不能为空!

    密码不能为空!

  • 邮箱不能为空!

    验证码不能为空!

    用户名不能为空!

    密码不能为空!

已有账号? 登录到雷哥托福
关闭图标
log图标
  • 使用手机找回密码
  • 使用邮箱找回密码
  • 手机号不能为空!

    验证码不能为空!

    密码不能为空!

  • 邮箱不能为空!

    验证码不能为空!

    密码不能为空!

又想起来了
加入生词本

listen

英['lɪs(ə)n] 美['lɪsn]
vi. 听,倾听;听从,听信
n. 听,倾听

已添加
×

我要举报草莓小菇凉评论

用户头像
草莓小菇凉:说的非常好,十分有道理,棒棒棒!

06-08 15:44:55

请选择举报类型:

举报电话:400-6021-727    举报QQ:2095453331
×
logo图标
分享到雷哥托福

分享成功图标分享成功

邀请名师点评成功,管理员正在安排老师进行点评。

继续做题 返回首页
支付雷豆失败图标 雷豆余额不足 购买雷豆 返回
报告题目错误
请选择错误类型:
请描述一下这个错误:

取消

TPO 25 -Discuss whales' breath

试音图标
查看听力原文

Listen to a conversation between a student and his biology professor.

Well, you know, I'm reading the papers about whales, and the path they travel as they swim through the ocean, their migration patterns.

Yes, I remember.

Well, I was thinking about it, and I realized I don't understand how they hold their breaths under water. It's a little crazy for me to be writing a paper about migration patterns without actually knowing how they stay underwater for so long.

Did you do any research to find out how they do it?

Yeah, I did. I searched on the Internet, and there was a lot of information about whales, their habitats, the way they communicate, you know, their songs. But if there was anything about whales and how they hold their breaths, I missed it. I've got a bunch of books.Actually, I've got so much information. It's a little overwhelming.

I'm surprised that there is nothing about it in any of those books.Well, to be honest, I've only skimmed them so far. 

I'm still working on finding sources.

Ok, I know I encourage everyone in class to look at a substantial number of sources, but I don't want you to get overwhelmed. Looking at a number of sources gives you a good knowledge base, but students only have a limited amount of time to work on each paper. I don't expect you to read a dozen of books on whales for this assignment.Focus on just a few.

Ok, thanks.

You know, since you're already here, I can give you a quick summary of how whales hold their breaths underwater. It's just a matter of certain adaptations in their anatomies, specifically in their circulatory system.

So, the blood flow was what makes the difference?

Yes, and in a couple of ways. 

First, blood makes up a larger share of whale's weight than any other mammals.

So they can store more oxygen because they have more blood?

Yes, but that's only part of it. They also have a greater capacity than land animals to store oxygen in their blood.

So how does having more oxygen in their blood help them stay underwater longer?

It's the way the whale's blood carries oxygen to the rest of its body. Whales carefully conserve their oxygen when underwater in a couple of ways.When a whale dives, its metabolic weight drops, causing its heart beat to slow down. And the blood flows to its muscles and some of its none-vital organs, like its kidneys, is also cut off. Whales muscles and none-vital organs are able to function without oxygen for an extended period of time.

I see, well, now I can concentrate on my topic.


Question 1
Why does the man go to see the professor?
核心词汇提示文字

网友解析

题目讨论

  • 用户头像

    网友0233  发表于 12-05 17:42:34

    Yeah, I did. I searched on the Internet and there was a lot of information about whales: their habitats, the way they communicate, you know, their songs, but if there was anything about whales and how they hold their breath, I missed it. I’ve got a bunch of books, actually, I got so much information; it’s a little overwhelming.
    学生想找到鲸鱼呼吸的材料,但是找了很多都没找到,所以来找教授寻求帮助。选D,其他选项没有涉及。

    • (0)
    • |
    • 回复(0)
    • |
    • 举报
  • 1
TPO 25-listen
马上开始精听

标题图标听力排行榜

  • 头像
    • TPO1
    • 笑同学
    • 得分:30分
    • 小图标初来乍到
  • 头像
    • TPO2
    • 得分:30分
    • 小图标初来乍到
  • 头像
    • TPO3
    • kristina6812
    • 得分:30分
    • 小图标初来乍到
  • 4 .alright 30分
  • 5 .cccoo 29分
  • 6 . 29分
  • 7 . 29分
  • 8 .lo 29分
  • 9 .835297wedec 29分
  • 10 .eugeniaXIA 29分
  • 11 .2095453331 29分
  • 12 .306581mh 29分
  • 13 .210878x 29分
  • 14 .Illona_Li 29分
  • 15 .chaoyang 29分
  • 16 . 29分
  • 17 . 27分
  • 18 .木炎 27分
  • 19 . 27分
  • 20 .我是奥利奥 27分
  • 21 .wendyhjw 27分
  • 22 .518159szhq 27分
  • 23 .你的小仙女. 27分
  • 24 . 27分
  • 25 .Oldlady 27分
  • 26 . 27分
  • 27 .656243oh 27分
  • 28 .Jacklyn 27分
  • 29 .179017zyy 27分
  • 30 . 27分
  • 31 .小糖包 27分
  • 32 .217551ehore 27分
  • 33 .怒考800分 27分
  • 34 .贝朵皮 27分
  • 35 .adojoqmd 26分
  • 36 .ricey 26分
  • 37 . 26分
  • 38 .DG 26分
  • 39 .799688tg 26分
  • 40 .abccccccc 26分
  • 41 .蓝莓大西瓜 26分
  • 42 . 26分
  • 43 .llll 26分
  • 44 . 26分
  • 45 .xietianyi 26分
  • 46 .lizrhino 26分
  • 47 .LysaWei 26分
  • 48 .123456 26分
  • 49 .Biggie 26分
  • 50 .lkedx 26分
查看详情图片

联系雷哥托福

全国免费咨询热线:400-6021-727

预约托福考试规划师