2020年09月六级第2套听力原文及答案解析

Conversation 1.

对话一。

M: You are a professor of physics at the University of Oxford.

您是牛津大学的物理学教授。

M: You're a senior advisor at the European Organization for Nuclear Research.

您是欧洲核子研究组织的高级顾问。

M: You also seem to tour the globe tirelessly, giving talks.

您似乎还不知疲倦地环游世界，发表演讲。

M: And, in addition, you have your own weekly TV show on science.

此外，您还有一个每周的科学电视节目。

M: Where do you get the energy?

您哪里来的精力？

F: Oh, well, I just love what I do.

哦，嗯，我只是热爱我的工作。

F: I'm extremely fortunate to have this life, doing what I love doing.

我非常幸运能过上这样的生活，做我热爱的事情。

M: Professor, what exactly is your goal?

教授，您的目标到底是什么？

M: Why do you do all of this?

您为什么做所有这些？

F: Well, as you said, I do have different things going on, but these, I think, can be divided into two groups, the education of science and the further understanding of science.

嗯，正如您所说，我确实有各种不同的事情在进行，但我认为这些可以分为两类：科学教育和对科学的进一步理解。

M: Don't these two things get in the way of each other?

这两件事不会相互妨碍吗？

M: What I mean is, doesn't giving lectures take time away from the lab?

我的意思是，发表演讲不会占用实验室的时间吗？

F: Not really, no.

不完全是，不会。

F: I love teaching, and I don't mind spending more time doing that now than in the past.

我热爱教学，而且我不介意现在比过去花更多时间在教学上。

F: Also, what I will say is that teaching a subject helps me comprehend it better myself.

此外，我想说的是，教授一门学科有助于我更好地理解它。

F: I find that it furthers my own knowledge when I have to explain something clearly, when I have to aid others in understanding it, and when I have to answer questions about it.

我发现，当我必须清楚地解释某事、帮助他人理解它以及回答关于它的问题时，这促进了我自己的知识。

F: Teaching at a high level can be very stimulating for anyone, no matter how much expertise they may already have in the field they are instructing.

无论一个人在所教授领域已有多少专业知识，高水平的教学对任何人来说都是非常有激励性的。

M: Of any scientific breakthroughs that you see on the near horizon, a significant discovery or invention we can expect soon.

关于您预见在不久的将来会出现的任何科学突破，一个重要的发现或发明我们可以期待很快出现。

F: The world is always conducting science, and there are constantly new things being discovered.

世界一直在进行科学研究，不断有新事物被发现。

F: In fact, right now we have too much data sitting in computers.

事实上，现在我们有太多数据存放在计算机中。

F: For example, we have thousands of photos of planet Mars taken by telescopes that nobody has ever seen.

例如，我们有数千张由望远镜拍摄的火星照片，但从未有人看过。

F: We have them, but nobody has had time to look at them with their own eyes, let alone analyze them.

我们拥有这些照片，但没有人有时间亲眼查看它们，更不用说分析了。

Questions 1 to 4 are based on the conversation you have just heard.

问题1到4基于您刚刚听到的对话。

Question 1. Why does the woman say she can be so energetic?

问题1。为什么那位女士说她能如此精力充沛？

Question 2. What has the woman been engaged in?

问题2。那位女士一直从事什么？

Question 3. What does the woman say about the benefit teaching brings to her?

问题3。那位女士说教学给她带来了什么好处？

Question 4. How does the woman say new scientific breakthroughs can be made possible?

问题4。那位女士说新的科学突破如何才能实现？

Conversation two

对话二

M: Do you think dreams have special meanings?

你认为梦有特殊含义吗？

F: No, I don't think they do.

不，我认为没有。

M: I don't either, but some people do.

我也不认为，但有些人这么认为。

M: I would say people who believe that dreams have special meanings are superstitious, especially nowadays.

我认为那些相信梦有特殊含义的人是迷信的，尤其是在当今。

M: In the past, during the times of ancient Egypt, Greece or China, people used to believe that dreams could foresee the future.

在过去，古埃及、古希腊或古中国时期，人们常常相信梦能预见未来。

M: But today, with all the scientific knowledge that we have, I think it's much harder to believe in these sorts of things.

但今天，随着我们拥有的所有科学知识，我认为很难再相信这类事情了。

F: My grandmother is superstitious, and she thinks dreams can predict the future.

我的祖母是迷信的，她认为梦能预测未来。

F: Once, she dreamed that the flight she was due to take the following day crashed.

有一次，她梦到她第二天要乘坐的航班坠毁了。

F: Can you guess what she did?

你能猜到她做了什么吗？

F: She didn't take that flight.

她没有乘坐那个航班。

F: She didn't even bother to go to the airport the following day.

她甚至第二天都没有去机场。

F: Instead, she took the same flight, but a week later.

相反，她乘坐了同一个航班，但是一周后。

F: And everything was fine, of course.

当然，一切都没事。

F: No plane ever crashed.

没有任何飞机坠毁。

M: How funny.

真有趣。

M: Did you know that flying is actually safer than any other mode of transport?

你知道吗，飞行实际上比其他任何交通方式都安全？

M: It's been statistically proven.

这已被统计证明。

M: People can be so irrational sometimes.

人们有时会如此非理性。

F: Yes, absolutely.

是的，绝对是。

F: But even if we think they're ridiculous, emotions can be just as powerful as rational thinking.

但即使我们认为它们荒谬，情感可能和理性思维一样强大。

M: Exactly.

正是如此。

M: People do all sorts of crazy things because of their irrational feelings.

人们会因为他们的非理性感受而做出各种疯狂的事情。

F: But in fact, some psychologists believe that our dreams are the result of our emotions and memories from that day.

但事实上，一些心理学家认为，我们的梦是当天情感和记忆的结果。

F: I think it was Sigmund Freud who said that children's dreams were usually simple representations of their wishes, things they wish would happen.

我想是西格蒙德·弗洛伊德说过，儿童的梦通常是他们愿望的简单表现，即他们希望发生的事情。

F: But in adults, dreams are much more complicated reflections of their more sophisticated sentiments.

但在成年人中，梦是他们更复杂情感的反映。

M: Isn't it interesting how psychologists try to understand, using the scientific method, something as bizarre as dreams?

心理学家试图用科学方法理解像梦这样奇异的东西，这难道不有趣吗？

M: Psychology is like the rational study of irrational feelings.

心理学就像是对非理性感受的理性研究。

Questions 5 to 8 are based on the conversation you have just heard.

问题5至8基于你刚刚听到的对话。

Question 5. What do both speakers think of dreams?

问题5. 两位说话者对梦有什么看法？

Question 6. Why didn't the woman's grandmother take her scheduled flight?

问题6. 为什么那位女士的祖母没有乘坐她预定的航班？

Question 7. What does the woman say about people's emotions?

问题7. 那位女士对人们的情感说了什么？

Question 8. What did psychologist Sigmund Freud say about adults' dreams?

问题8. 心理学家西格蒙德·弗洛伊德对成年人的梦说了什么？

Passage 1.

段落1。

While some scientists explore the surface of Antarctica, others are learning more about a giant body of water four kilometers beneath the ice pack.

当一些科学家探索南极洲表面时，另一些科学家正在深入了解冰层下四公里处的一个巨大水体。

Scientists first discovered Lake Vostok in the 1970s by using radio waves that penetrate the ice.

科学家们在20世纪70年代首次通过使用穿透冰层的无线电波发现了沃斯托克湖。

Since then, they have used sound waves and even satellites to map this massive body of water.

自那以后，他们使用声波甚至卫星来绘制这个巨大水体的地图。

How does the water in Lake Vostok remain liquid beneath an ice sheet?

沃斯托克湖的水是如何在冰盖下保持液态的？

The thick glacier above acts like an insulating blanket and keeps the water from freezing, says Martin Siegert, a glaciologist from the University of Wales.

威尔士大学的冰川学家马丁·西格特说，上方厚实的冰川像隔热毯一样，防止水结冰。

In addition, geothermal heat from deep within the earth may warm the hidden lake.

此外，来自地球深处的地热可能温暖了这个隐藏的湖泊。

The scientists suspect that microorganisms may be living in Lake Vostok, closed off from the outside world for more than two million years.

科学家们怀疑，可能有微生物生活在沃斯托克湖中，这些微生物已与外界隔绝超过两百万年。

Anything found there will be totally alien to what's on the surface of the earth, says Siegert.

西格特说，在那里发现的任何东西都将与地球表面的东西完全不同。

Scientists are trying to find a way to drill into the ice and draw water samples without causing contamination.

科学家们正在努力找到一种方法，钻入冰层并提取水样，而不造成污染。

Again, robots might be the solution.

同样，机器人可能是解决方案。

If all goes as planned, a drill-shaped robot will melt through the surface ice.

如果一切按计划进行，一个钻头形状的机器人将融化穿透表面冰层。

When it reaches the lake, it will release another robot that can swim in the lake, take pictures, and look for signs of life.

当它到达湖泊时，它将释放另一个机器人，该机器人可以在湖中游泳、拍照并寻找生命迹象。

The scientists hope their discoveries will shed light on life in outer space, which might exist in similar dark and arid conditions.

科学家们希望他们的发现能揭示外太空生命，这些生命可能存在于类似的黑暗和干旱条件中。

Recently, close-up pictures of Jupiter's moon Europa showed signs of water beneath its icy surface.

最近，木星卫星欧罗巴的近距离图片显示了其冰层下有水的迹象。

Once tested in Antarctica, robots could be sent to Europa to search for life there, too.

一旦在南极洲测试过，机器人也可以被派往欧罗巴去寻找那里的生命。

Questions 9 to 11 are based on the passage you have just heard.

问题9至11基于你刚才听到的段落。

Question 9. What did scientists first use to discover Lake Vostok in the 1970s?

问题9. 科学家们在20世纪70年代首次使用什么发现了沃斯托克湖？

Question 10. What do scientists think about Lake Vostok?

问题10. 科学家们如何看待沃斯托克湖？

Question 11. What do the scientists hope their discoveries will do?

问题11. 科学家们希望他们的发现能做什么？

Passage 2.

第二段。

The idea to study the American Indian tribe Tarahumaras came to James Copeland in 1984 when he discovered that very little research had been done on their language.

1984年，詹姆斯·科普兰产生了研究美洲印第安部落塔拉乌马拉人的想法，当时他发现关于他们的语言研究很少。

He contacted a tribe member through a social worker who worked with the tribesmen in Mexico.

他通过一位在墨西哥与部落成员合作的社会工作者联系到了一位部落成员。

At first, the tribe member, named Gonzales, was very reluctant to cooperate.

起初，这位名叫冈萨雷斯的部落成员非常不愿意合作。

He told Copeland that no amount of money could buy his language.

他告诉科普兰，再多的钱也买不到他的语言。

But after Copeland explained to him what he intended to do with his research, and how it would benefit the Tarahumaras, Gonzales agreed to help.

但在科普兰向他解释了他的研究意图，以及这将如何使塔拉乌马拉人受益后，冈萨雷斯同意帮忙。

He took Copeland to his village and served as an intermediary.

他带科普兰去了他的村庄，并担任了中间人。

Copeland says, thanks to him, the Tarahumaras understood what our mission was and started trusting us.

科普兰说，多亏了他，塔拉乌马拉人明白了我们的使命，并开始信任我们。

Entering the world of the Tarahumaras has been a laborious project for Copeland.

进入塔拉乌马拉人的世界对科普兰来说是一个艰巨的项目。

To reach their homeland, he must drive two and a half days from Houston, Texas.

要到达他们的家园，他必须从得克萨斯州休斯顿开车两天半。

He loads up his vehicle with goods that the tribesmen can't easily get, and gives the goods to them as a gesture of friendship.

他装满车辆，带上部落成员不易获得的物品，并将这些物品作为友谊的象征送给他们。

The Tarahumaras, who don't believe in accumulating wealth, take the food and share it among themselves.

塔拉乌马拉人不相信积累财富，他们接收食物并互相分享。

For Copeland, the experience has not only been academically satisfying, it also has enriched his life in several ways.

对科普兰来说，这次经历不仅在学术上令人满意，还在多个方面丰富了他的生活。

I see people rejecting technology and living a very hard, traditional life, which offers me another notion about the meaning of progress in the tradition, he says.

他说：“我看到人们拒绝技术，过着非常艰苦的传统生活，这让我对传统中进步的意义有了另一种理解。”

I experience the simplicity of living in nature that I would otherwise only be able to read about.

我体验了在自然中生活的简单，否则我只能从书本上读到。

I see a lot of beauty in their sense of sharing and concern for each other.

我在他们的分享意识和相互关怀中看到了很多美好。

Questions 12 to 15 are based on the passage you have just heard.

问题12到15基于你刚刚听到的段落。

Question 12. Why did James Copeland want to study the American Indian tribe, Tarahumaras?

问题12. 为什么詹姆斯·科普兰想要研究美洲印第安部落塔拉乌马拉人？

Question 13. How did Gonzalez help James Copeland?

问题13. 冈萨雷斯如何帮助詹姆斯·科普兰？

Question 14. What does the speaker say about James Copeland's trip to the Tarahumaras village?

问题14. 关于詹姆斯·科普兰前往塔拉乌马拉村庄的旅行，说话者说了什么？

Question 15. What impresses James Copeland about the Tarahumaras tribe?

问题15. 塔拉乌马拉部落中什么给詹姆斯·科普兰留下了深刻印象？

Recording 1.

录音1.

Followed by three or four questions.

随后是三个或四个问题。

What is a radical?

什么是激进分子？

It seems today that people are terrified of the term, particularly of having the label attached to them.

如今人们似乎对这个词感到恐惧，尤其是害怕被贴上这个标签。

Accusing individuals or groups of being radical often serves to silence them into submission, thereby maintaining the existing state of affairs and, more important, preserving the power of a select minority who are mostly wealthy white male in Western society.

指控个人或团体激进通常是为了迫使他们沉默屈服，从而维持现状，更重要的是，保护西方社会中少数富裕白人男性的权力。

Feminism is a perfect example of this phenomenon.

女权主义是这一现象的绝佳例证。

The women's movement has been plagued by stereotypes, misrepresentations by the media, and accusations of man-hating and radicalism, when the basic foundation of feminism is simply that women deserve equal rights in all facets of life.

妇女运动一直受到刻板印象、媒体的错误描绘以及仇视男性和激进主义的指控所困扰，而女权主义的基本基础仅仅是女性在生活的所有方面应享有平等权利。

When faced with the threat of being labeled radical, women back down from their worthy cause and consequently participate in their own oppression.

当面临被贴上激进标签的威胁时，女性从她们有价值的事业中退缩，从而参与了对自身的压迫。

It has gotten to the point that many women are afraid to call themselves feminists because of the stigma attached to the word.

已经到了这样一个地步，许多女性因为这个词所带的污名而不敢自称女权主义者。

If people refuse to be controlled and intimidated by stigmas, the stigmas lose all their power.

如果人们拒绝被污名所控制和恐吓，污名就会失去所有力量。

Without fear on which to feed, such stigmas can only die.

没有恐惧可以滋养，这样的污名只能消亡。

To me, a radical is simply someone who rebels against the norm or advocates a change in the existing state of affairs.

在我看来，激进分子就是反抗规范或倡导改变现状的人。

On closer inspection, it becomes clear that the norm is constantly evolving and therefore is not a constant entity.

仔细观察就会发现，规范是不断演变的，因此不是固定不变的实体。

So why then is deviation from the present situation such a threat when the state of affairs itself is unstable and subject to relentless transformation?

那么，为什么偏离现状如此具有威胁性，而现状本身却不稳定且不断变化呢？

It all goes back to maintaining the power of those who have it and preventing the rise of those who don't.

这一切都归结于维护掌权者的权力并防止无权者崛起。

In fact, when we look at the word radical in a historical context, nearly every figure we now hold up as a hero was considered a radical in his or her time.

事实上，当我们从历史背景来看“激进”这个词时，我们现在推崇为英雄的几乎每一个人在他或她的时代都被视为激进分子。

Radicals are people who affect change.

激进分子是影响变革的人。

They are the people about whom history is written.

他们是历史记载的人物。

Abolitionists were radicals.

废奴主义者是激进分子。

Civil rights activists were radicals.

民权活动家是激进分子。

Even the founders of our country in their fight to win independence from England were radicals.

甚至我们国家的创始人为赢得从英国的独立而战时也是激进分子。

Their presence in history has changed the way our society functions, mainly by shifting the balance of power that previously existed.

他们在历史上的存在改变了我们社会的运作方式，主要是通过改变先前存在的权力平衡。

Of course, there are some radicals who've made a negative impact on humanity, but undeniably there would simply be no progress without radicals.

当然，有些激进分子对人类产生了负面影响，但不可否认的是，没有激进分子就根本没有进步。

That being said, next time someone calls me a radical, I will accept that label with pride.

话虽如此，下次有人称我为激进分子时，我将自豪地接受这个标签。

Questions 16 to 18 are based on the lecture you have just heard.

问题16至18基于你刚才听到的讲座。

Question 16. What usually happens when people are accused of being radical?

问题16. 当人们被指控为激进时，通常会发生什么？

Question 17. What is the speaker's definition of a radical?

问题17. 演讲者对激进分子的定义是什么？

Question 18. What does the speaker think of most radicals in the American history?

问题18. 演讲者如何看待美国历史上的大多数激进分子？

Recording 2.

录音2。

We are very susceptible to the influence of the people around us.

我们非常容易受到周围人的影响。

For instance, you may have known somebody who has gone overseas for a year or so and has returned with an accent perhaps.

例如，你可能认识某人，他出国一年左右，回来后可能带点口音。

We become part of our immediate environment.

我们成为我们直接环境的一部分。

None of us are immune to the influences of our own world and let us not kid ourselves that we are untouched by the things and the people in our life.

我们中没有人能免疫自己世界的影响，别自欺欺人地认为我们不受生活中事物和人的影响。

Fred goes off to his new job at a factory.

Fred去工厂开始他的新工作。

Fred takes a 10-minute coffee break, but the other workers take a half an hour.

Fred休息10分钟喝咖啡，但其他工人休息半小时。

Fred says, what's the matter with you guys?

Fred说，你们怎么了？

Weeks later, Fred is taking 20-minute breaks.

几周后，Fred休息20分钟。

A month later, Fred takes his half hour.

一个月后，Fred也休息半小时。

Fred is saying, if you can't beat them, join them.

Fred说，如果打不过他们，就加入他们。

Why would I work any harder than the next guy?

我为什么要比别人更努力工作？

The fascinating thing about being human is that generally we are unaware that there are changes taking place in our mentality.

关于为人最有趣的是，通常我们没有意识到心态正在发生变化。

It is like returning to the city smog after some weeks in the fresh air.

这就像在新鲜空气里待了几周后回到城市烟雾中一样。

Only then do we realize that we have become accustomed to the nasty smells.

直到那时我们才意识到自己已经习惯了那些难闻的气味。

Mix with critical people and we learn to criticize.

与挑剔的人交往，我们就学会批评。

Mix with happy people and we learn about happiness.

与快乐的人交往，我们就学会快乐。

What this means is that we need to decide what we want from life and then choose our company accordingly.

这意味着我们需要决定从生活中想要什么，然后相应地选择我们的同伴。

You may well say, that is going to take some effort.

你可能会说，这需要一些努力。

It may not be comfortable.

可能不会很舒适。

I may offend some of my present company.

我可能会冒犯我现在的一些同伴。

Right, but it is your life.

没错，但这是你的生活。

Fred may say, I'm always broke, frequently depressed, I'm going nowhere, and I never do anything exciting.

Fred可能会说，我总是破产，经常沮丧，一事无成，从不做任何令人兴奋的事。

Then we discover that Fred's best friends are always broke, frequently depressed, going nowhere, and wishing that life was more exciting.

然后我们发现Fred的最好朋友也总是破产，经常沮丧，一事无成，并希望生活更刺激。

This is not coincidence, nor is it our business to stand in judgment of Fred.

这不是巧合，我们也无权评判Fred。

However, if Fred wants to improve his quality of life, the first thing he'll need to do is recognize what has been going on all these years.

然而，如果Fred想改善生活质量，他首先需要认识到这些年到底发生了什么。

It's no surprise that doctors, as a profession, suffer a lot of ill health because they spend their lives around sick people.

医生这个职业身体健康问题多不足为奇，因为他们一生都与病人打交道。

Psychiatrists have a higher incidence of suicide in their profession for related reasons.

由于相关原因，精神科医生职业中的自杀率较高。

Traditionally, nine out of ten children whose parents smoke, smoke themselves.

传统上，父母吸烟的孩子中，十个有九个自己也吸烟。

Obesity is in part an environmental problem.

肥胖部分是一个环境问题。

Successful people are successful friends and so the story goes on.

成功的人有成功的朋友，如此循环往复。

Questions 19 to 22 are based on the lecture you have just heard.

问题19至22基于你刚才听到的讲座。

Question 19. What does the speaker say about us as human beings?

问题19. 讲话者对我们作为人类说了什么？

Question 20. What does the speaker say Fred should do first to improve his quality of life?

问题20. 讲话者说Fred应该首先做什么来改善生活质量？

Question 21. What does the speaker say about psychiatrists?

问题21. 讲话者对精神科医生说了什么？

Recording 3.

录音3。

Virtually every American can recognize a dollar bill at a mere glance.

几乎每个美国人只需一眼就能认出美元钞票。

Many can identify it by its sound or texture, but few people indeed can accurately describe the world's most powerful important currency.

许多人能通过声音或质地识别它，但确实很少有人能准确描述世界上最强大、最重要的货币。

The American dollar bill is colored with black ink on one side and green on the other.

美国美元钞票一面用黑色墨水印刷，另一面用绿色墨水印刷。

The exact composition of the paper and ink is a closely guarded government secret.

纸张和墨水的确切成分是政府严密保守的秘密。

Despite its weighty importance, the dollar bill actually weighs little.

尽管它非常重要，但美元钞票实际上很轻。

It requires nearly 500 bills to tip the scales at a pound.

需要近500张钞票才能使天平达到一磅的重量。

Not only is the dollar bill lightweight, but it also has a brief lifespan.

美元钞票不仅轻便，而且寿命短暂。

Few dollar bills survive longer than 18 months.

很少有美元钞票能存活超过18个月。

The word dollar is taken from the German word Tala, the name for the world's most important currency in the 16th century.

美元一词源自德语单词Tala，这是16世纪世界上最重要货币的名称。

The Tala was a silver coin first minted in 1518 under the reign of Charles V, Emperor of Germany.

Tala是一种银币，于1518年在德国皇帝查理五世统治时期首次铸造。

The concept of paper money is a relatively recent innovation in the history of American currency.

纸币的概念在美国货币史上是一个相对较新的创新。

When the constitution was signed, people had little regard for paper money because of its steadily decreasing value during the colonial era.

当宪法签署时，由于纸币在殖民时代价值持续下降，人们对纸币评价不高。

Because of this lack of faith, the new American government minted many coins for common currency.

由于这种缺乏信任，新美国政府铸造了许多硬币作为通用货币。

Interest-bearing banknotes were issued at the same time, but their purpose was limited to providing money for urgent government crises, such as American involvement in the War of 1812.

同时发行了带利息的钞票，但其目的仅限于为紧急政府危机提供资金，例如美国参与1812年战争。

The first non-interest-bearing paper currency was authorized by Congress in 1862 at the height of the Civil War.

第一张无息纸币于1862年美国内战最激烈时由国会授权发行。

At this point, citizens' old fears of devalued paper currency had calmed, and the dollar bill was born.

此时，公民对贬值纸币的旧有恐惧已经平息，美元钞票由此诞生。

The new green-colored paper money quickly earned the name greenback.

新的绿色纸币很快获得了“绿背钞票”的名称。

Today, the American dollar bill is a product of the Federal Reserve and is issued from the twelve Federal Reserve banks around the United States.

如今，美国美元钞票是美联储的产物，由美国各地的十二家联邦储备银行发行。

The government keeps a steady supply of approximately two billion bills in circulation at all times.

政府始终维持约二十亿张钞票的稳定流通供应。

Controversy continues to surround the true value of the dollar bill.

围绕美元钞票的真实价值的争议持续存在。

American history has seen generations of politicians argue in favor of a gold standard for American currency.

美国历史上，几代政治家都主张为美国货币实行金本位制。

However, for the present, the American dollar bill holds the value that is printed on it, and little more.

然而，目前，美国美元钞票仅保有其上面印刷的价值，除此之外几乎没有更多价值。

The only other guarantee on the bill is a Federal Reserve pledge as a confirmation in the form of government securities.

钞票上唯一的其他担保是美联储以政府证券形式提供的承诺确认。

Questions 23 to 25 are based on the lecture you have just heard.

问题23至25基于你刚刚听到的讲座。

Question 22. What does the speaker say about the American dollar bill?

问题22. 演讲者关于美国美元钞票说了什么？

Question 23. What does the speaker say about the exact composition of the American dollar bill?

问题23. 演讲者关于美国美元钞票的确切成分说了什么？

Question 24. Why did the new American government mint only coins for common currency?

问题24. 为什么新美国政府只铸造硬币作为通用货币？

Question 25. What have generations of American politicians argued for?

问题25. 几代美国政治家都主张什么？