Discuss whales'breath托福聽力原文翻譯及問題答案

Discuss whales'breath托福聽力原文翻譯及問題答案

一、Discuss whales'breath托福聽力原文：

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托福聽力中文翻譯：

旁白：聽一個學(xué)生和他的生物教授之間的對話。

男學(xué)生：嗯，你知道，我在寫那篇論文，是關(guān)于鯨魚和它們在海洋中游動的路徑，它們的遷徙模式。

女教授：是的。我記得。

男學(xué)生：嗯，我在想這個問題，我意識到我不明白他們在水下是如何屏住呼吸的。對我來說，寫關(guān)于遷移模式的文章卻不知道它們是如何在水下呆這么長時間有點瘋狂。

女教授：你有沒有研究過他們是怎么做到的？

男學(xué)生：是的，是的。我在互聯(lián)網(wǎng)上搜索了很多關(guān)于鯨魚的信息，它們的棲息地，它們交流的方式，你知道的，它們的歌曲。但如果說鯨魚和它們?nèi)绾纹料⒂惺裁搓P(guān)系的話，我就錯過了。我有一堆書。事實上，我有這么多的信息，有點讓人不知所措。

女教授：我很驚訝這些書中都沒有關(guān)于它的內(nèi)容。男學(xué)生：嗯，老實說，到目前為止我只瀏覽了一遍。我仍在尋找來源。

女教授：好的。我知道我鼓勵班上的每個人看大量的資料來源，但我不想讓你們不知所措。查閱大量資料可以為您提供一個良好的知識庫，但學(xué)生完成每篇論文的時間有限。我不希望你在這項任務(wù)中讀十幾本關(guān)于鯨魚的書。只關(guān)注幾個。

男學(xué)生：好的，謝謝。

女教授：你知道，既然你已經(jīng)來了。我可以給你一個關(guān)于鯨魚在水下如何屏息的簡短總結(jié)。這只是它們的解剖結(jié)構(gòu)的某些適應(yīng)問題，特別是在它們的循環(huán)系統(tǒng)中。

男學(xué)生：那么血液流動有什么區(qū)別？

女教授：是的，在幾個方面。首先，與其他哺乳動物相比，血液在鯨魚體重中所占比例更大。

男學(xué)生：因為他們有更多的血液，所以他們可以儲存更多的氧氣？

女教授：是的，但這只是其中的一部分。它們比陸地動物在血液中儲存氧氣的能力更強。

男學(xué)生：那么血液中有更多的氧氣如何幫助他們在水下停留更長時間呢？

女教授：這是鯨魚血液將氧氣輸送到身體其他部位的方式。鯨魚在水下時通過幾種方式小心地保存氧氣。當鯨魚潛水時，其代謝率下降，導(dǎo)致心跳減慢。鯨魚肌肉和一些非重要器官（如腎臟）的血流也被切斷。鯨魚的肌肉和非重要器官能夠在長時間無氧的情況下發(fā)揮功能。男學(xué)生：我明白了……好吧，現(xiàn)在我可以專注于我的話題了！

三、Discuss whales'breath托福聽力問題：

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托福聽力答案：

A1:正確答案：D

A2:正確答案：B

A3:正確答案：A

A4:正確答案：C

A5:正確答案：AD

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