托福tpo58听力conversation2 Interferometers

托福tpo58听力conversation2 Interferometers，那么接下来就跟着中国教育在线的小编详细了解一下吧。

Interferometers托福听力原文翻译及问题答案

一、Interferometers托福听力原文：

NARRATOR:Listen to part of a lecture in an astronomy class.

MALE PROFESSOR:So your reading assignment focused on the technology…telescopes…and how they’ve changed astronomy.And there was a section on the Hooker telescope…So why was the Hooker telescope so important?Let’s talk about that before we move on to some of the newer technologies.Now back in the 1920s,the Hooker telescope was the most powerful telescope in the world.And through it we could see,see for the first time,that the universe extends far,far beyond the Milky Way galaxy.We could see that there are multiple galaxies beyond it…and all these galaxies are moving away from one another.So multiple galaxies…moving away from each other…led to the theory…

MALE STUDENT:The big bang theory? 

MALE PROFESSOR:Exactly.And that theory,that 15 billion years ago an explosion started the expansion of the universe,well,at the time that was a pretty revolutionary idea.

MALE STUDENT:And the Hooker telescope was responsible for that?

MALE PROFESSOR:Yes,because it allowed us to see that far,and being able to see that far led to,well it led to the big bang theory…But let’s move on.The reading assignment discussed another tool for scanning the universe:the interferometer.Claudia,what can you tell me about interferometers?

FEMALE STUDENT:OK.An interferometer is a machine,made of two or more conventional telescopes.I think the example they gave in the book was made from six?And they’re spread out;they’re not right next to each other.And then the light,the starlight that those telescopes gather,travels through pipes to some computers,and then the computers put all the light together to make one image.

MALE PROFESSOR:OK.Good.Although,maybe that explanation is a bit simplistic.There may be a thousand or so meters of pipe carrying the starlight from the telescopes to the computers.And then getting all those components to work together,to synchronize,so the light from all the different telescopes reaches the computers at exactly the same time,that’s the challenge of working with interferometers.What else can you tell me,what’s the advantage here,Paul?

MALE STUDENT:Alright,I think the idea isn’t that it sees farther,but that the image you see is a lot sharper.There’s more detail.

MALE PROFESSOR:A lot more detail.The image we get is something like 50 times finer than what you get with a single-mirror,conventional telescope.So,why is that important?Now,think back a minute.A couple weeks ago we looked at Castor,in the Gemini constellation.What do you remember about that?

FEMALE STUDENT:Well,through our telescope here,a conventional telescope,Castor looked like a single star,but you told us that it wasn’t.It’s actually six stars orbiting,kind of dancing,around each other.Oh,I get it.

MALE STUDENT:And an interferometer would be able to see six separate stars?

MALE PROFESSOR:Yes.Remember,single stars like our Sun are the exception,not the rule.So more often than not you have two,three,or more stars clustered around each other,like Castor.Not only that,but even a star’s dimensions,um,a conventional telescope won’t tell you,you can’t determine a star’s dimension because you can’t tell exactly how far away it is.And there are other things as well:How do stars behave as they age?Why do they cluster together?What was our Sun like in the past?Can we predict giant flares or periods of dimming?And interferometers will certainly help us find planets,and of course the more planets you find,the greater the possibility of finding planets that may support life.

MALE STUDENT:So do you think interferometers will have the kind of impact the Hooker telescope had?

MALE PROFESSOR:I doubt it.Remember,big bang was a really revolutionary theory.But then again,if an interferometer is used to locate a planet that supports life…well that’s another story altogether.

二、Interferometers托福听力中文翻译：

旁白：在天文学课上听讲座的一部分。

男教授：所以你的阅读任务集中在技术…望远镜…以及它们如何改变天文学。胡克望远镜上有一个部分……为什么胡克望远镜如此重要？在我们继续讨论一些新技术之前，让我们先谈谈这个问题。回到20世纪20年代，胡克望远镜是世界上最强大的望远镜。通过它，我们可以看到，第一次看到，宇宙远远超出了银河系。我们可以看到在它后面有多个星系……所有这些星系都在彼此远离。所以多个星系…彼此远离…导致了这个理论…

男学生：大爆炸理论&nbsp；

男教授：没错。这个理论认为，150亿年前的一次爆炸开始了宇宙的膨胀，当时这是一个相当革命性的想法。

男学生：胡克望远镜对此负责吗？

男教授：是的，因为它能让我们看到那么远，并且能够看到那么远导致了大爆炸理论……但让我们继续。阅读作业讨论了另一种扫描宇宙的工具：干涉仪。克劳迪娅，你能告诉我什么是干涉仪吗？

女学生：好的。干涉仪是一台机器，由两个或多个常规望远镜组成。我想他们在书中举的例子是六个？它们散开了；他们不在一起。然后这些望远镜收集的光线，星光，通过管道传输到一些计算机，然后计算机将所有的光线组合在一起形成一个图像。

男教授：好的，很好。虽然，这种解释可能有点过于简单。可能有上千米左右的管道将星光从望远镜传送到计算机。然后让所有这些组件一起工作，同步，这样来自所有不同望远镜的光可以同时到达计算机，这就是使用干涉仪的挑战。你还能告诉我什么，保罗，这有什么好处？

男学生：好的，我认为这个想法并不是说它看得更远，而是你看到的图像更清晰。还有更多细节。

男教授：更多细节。我们得到的图像比用单镜、传统望远镜得到的图像精细50倍。那么，为什么这很重要？现在，回想一下。几周前，我们观察了双子星座中的卡斯托。你还记得那件事吗？

女学生：通过我们这里的望远镜，传统的望远镜，卡斯托看起来像一颗恒星，但你告诉我们它不是。它实际上是六颗恒星围绕彼此旋转，有点像跳舞。哦，我明白了。

男学生：干涉仪能看到六颗不同的恒星吗？

男教授：是的。记住，像太阳这样的恒星是例外，而不是规则。因此，经常会有两颗、三颗或更多恒星围绕在一起，就像卡斯托一样。不仅如此，即使是恒星的尺寸，嗯，传统的望远镜也不会告诉你，你无法确定恒星的尺寸因为你无法确切地知道它离你有多远。还有其他的事情：恒星在变老时的行为如何？他们为什么聚在一起？过去我们的太阳是什么样子的？我们能预测巨大的耀斑或暗淡期吗？干涉仪肯定会帮助我们找到行星，当然，你找到的行星越多，找到支持生命的行星的可能性就越大。

男学生：那么你认为干涉仪会产生像胡克望远镜那样的影响吗？

男教授：我怀疑。记住，大爆炸是一个真正革命性的理论。但话说回来，如果用干涉仪来定位支持生命的行星……那完全是另一回事了。

三、Interferometers托福听力问题：

Q1:What is the lecture mainly about?

A.Instruments that have helped improve astronomical observations

B.The impact of the big bang theory on astronomy

C.The importance of computers in astronomy

D.The development of the interferometer

Q2:According to the professor,why was the Hooker telescope important?

A.It allowed astronomers to differentiate between solo-and multiple-star systems.

B.It allowed astronomers to accurately measure the dimensions of stars.

C.It was the first telescope to be attached to a computer.

D.It helped astronomers develop the big bang theory.

Q3:According to the professor,what advantage does an interferometer have over a conventional telescope?

A.It is simpler to operate.

B.It provides a more detailed image.

C.It allows astronomers to see farther.

D.It helps astronomers determine if stars are moving away from one another.

Q4:Why does the professor mention the star Castor?

A.To point out how it differs from most other stars

B.To give an example of a discovery made using the Hooker telescope

C.To demonstrate the interferometer’s capabilities

D.To remind the class of an important discovery discussed in the reading

Q5:What does the professor imply when he says this

A.Interferometers may help scientists find answers to many astronomical questions.

B.The students should look for the answers to these questions in their textbook.

C.There are many areas of astronomy that the class has not yet covered.

D.Some astronomical questions will never be answered.

Q6.What does the professor imply when he says this?

A.He will discuss the topic in a later class session.

B.He may change his mind about the impact of interferometers.

C.He does not believe there are other planets that support life.

D.He thinks that the technology of both telescopes and interferometers will soon be outdated.

四、Interferometers托福听力答案：

A1:正确答案：A

A2:正确答案：D

A3:正确答案：B

A4:正确答案：C

A5:正确答案：A

A6:正确答案：B

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