Discuss whales'breath托福听力原文翻译及问题答案

Discuss whales'breath托福听力原文翻译及问题答案

一、Discuss whales'breath托福听力原文：

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

MALE STUDENT:Well,you know,I am writing that paper about whales and the path they travel as they swim through the ocean,their migration patterns.

FEMALE PROFESSOR:Yes.I remember.

MALE STUDENT:And well,I was thinking about it and I realized I don't understand how they hold their breath underwater.It's a little crazy for me to be writing about migration patterns without actually knowing how they stay underwater for so long.

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

MALE STUDENT: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 have got so much information,it's a little overwhelming.

FEMALE PROFESSOR:I am surprised there is nothing about it in any of those books.MALE STUDENT:Well,to be honest,l've only skimmed them so far.I am still working on finding sources.

FEMALE PROFESSOR: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 books on whales for this assignment.Focus on just a few.

MALE STUDENT:Ok.Thanks.

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

MALE STUDENT:So the blood flow is what makes the difference?

FEMALE PROFESSOR:Yes,and in a couple of ways.First,blood makes up a larger share of a whale's weight than in other mammals.

MALE STUDENT:So they can store more oxygen because they have more blood?

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

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

FEMALE PROFESSOR: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 rate drops,causing its heartbeat to slow down.And the blood flow to its muscles and some of its non-vital organs,like its kidneys,is also cut off.A whale's muscles and non-vital organs are able to function without oxygen for an extended period of time.MALE STUDENT:I see...Well,now I can concentrate on my topic!

二、Discuss whales'breath托福听力中文翻译：

旁白：听一个学生和他的生物教授之间的对话。

男学生：嗯，你知道，我在写那篇论文，是关于鲸鱼和它们在海洋中游动的路径，它们的迁徙模式。

女教授：是的。我记得。

男学生：嗯，我在想这个问题，我意识到我不明白他们在水下是如何屏住呼吸的。对我来说，写关于迁移模式的文章却不知道它们是如何在水下呆这么长时间有点疯狂。

女教授：你有没有研究过他们是怎么做到的？

男学生：是的，是的。我在互联网上搜索了很多关于鲸鱼的信息，它们的栖息地，它们交流的方式，你知道的，它们的歌曲。但如果说鲸鱼和它们如何屏息有什么关系的话，我就错过了。我有一堆书。事实上，我有这么多的信息，有点让人不知所措。

女教授：我很惊讶这些书中都没有关于它的内容。男学生：嗯，老实说，到目前为止我只浏览了一遍。我仍在寻找来源。

女教授：好的。我知道我鼓励班上的每个人看大量的资料来源，但我不想让你们不知所措。查阅大量资料可以为您提供一个良好的知识库，但学生完成每篇论文的时间有限。我不希望你在这项任务中读十几本关于鲸鱼的书。只关注几个。

男学生：好的，谢谢。

女教授：你知道，既然你已经来了。我可以给你一个关于鲸鱼在水下如何屏息的简短总结。这只是它们的解剖结构的某些适应问题，特别是在它们的循环系统中。

男学生：那么血液流动有什么区别？

女教授：是的，在几个方面。首先，与其他哺乳动物相比，血液在鲸鱼体重中所占比例更大。

男学生：因为他们有更多的血液，所以他们可以储存更多的氧气？

女教授：是的，但这只是其中的一部分。它们比陆地动物在血液中储存氧气的能力更强。

男学生：那么血液中有更多的氧气如何帮助他们在水下停留更长时间呢？

女教授：这是鲸鱼血液将氧气输送到身体其他部位的方式。鲸鱼在水下时通过几种方式小心地保存氧气。当鲸鱼潜水时，其代谢率下降，导致心跳减慢。鲸鱼肌肉和一些非重要器官（如肾脏）的血流也被切断。鲸鱼的肌肉和非重要器官能够在长时间无氧的情况下发挥功能。男学生：我明白了……好吧，现在我可以专注于我的话题了！

三、Discuss whales'breath托福听力问题：

Q1:1.Why does the man go to see the professor?

A.To find out how to distinguish between different types of whale songs

B.To request permission to change the topic of his paper

C.To discuss the difference between using the internet and using books to find sources

D.To get help locating some information for his paper

Q2:2.What is the topic of the man’s paper?

A.How whales hold their breath

B.Whale migration patterns

C.Characteristic of whale habitats

D.The differences between the circulatory system of whales and that of other Mammals

Q3:3.What is the professor’s attitude toward the man’s question about how whales hold their breath?

A.She thinks he does not need to spend a lot of time looking for the answer.

B.She is surprised because she has already addressed this question in class.

C.She dismissed it as unimportant.

D.She is pleased that has a plan to obtain the answer himself.

Q4:4.Why does the professor mention the limited time students have to complete their papers?

A.To suggest that looking at research on the internet is a good way to save time

B.To point out that the library has reduced the amount of time it is open each day

C.To indicate her expectations for the amount of research to be done for the paper

D.To emphasize the importance of starting to write the paper a couple of weeks before it is due

Q5:5.According to the professor,how does a whale conserve oxygen while underwater?[Click on 2 answers.]

A.Its heart rate decreases.

B.Its lung capacity temporarily increases.

C.It slows the pace of its swimming.

D.Blood flow to certain organs is decreased.

四、Discuss whales'breath托福听力答案：

A1:正确答案：D

A2:正确答案：B

A3:正确答案：A

A4:正确答案：C

A5:正确答案：AD