2019年06月六级第3套听力原文及答案解析

Conversation 1.

对话1。

F: Wow, I would give anything to be more like Audrey Hepburn.

哇，我愿意付出一切来变得更像奥黛丽·赫本。

M: I never really understood why so many girls were such big fans of her.

我从未真正理解为什么那么多女孩是她的忠实粉丝。

M: I mean, I've seen the famous films, Roman Holiday, Breakfast at Tiffany's, and a few others, but I still don't fully get it.

我的意思是，我看过那些著名电影，《罗马假日》、《蒂凡尼的早餐》和其他几部，但我仍然不完全理解。

M: Was she that great of an actress?

她真是一位那么伟大的女演员吗？

F: Well, for me, my adoration goes beyond her movies.

嗯，对我来说，我对她的喜爱超越了她的电影。

F: She had such a classic elegance about her.

她有着一种经典的优雅气质。

F: She was always so poised, in part because she spent years training as a ballet dancer before becoming an actress.

她总是如此沉着，部分原因是她在成为演员之前花了多年时间训练芭蕾舞。

M: Why didn't she stick to dancing as a career?

她为什么没有坚持舞蹈作为职业？

F: It seems it was fate.

似乎是命运。

F: She suffered from inadequate nutrition during the war, and therefore a career as a professional dancer would have been too demanding on her body.

她在战争期间营养不良，因此作为职业舞者的生涯对她的身体来说太苛刻了。

F: So she focused on acting instead.

所以她转而专注于表演。

F: Roman Holiday was her first big break which made her a star.

《罗马假日》是她第一个重大突破，使她成为明星。

M: Was that the film that opened with her shopping for jewelry in New York City?

那是那部以她在纽约市购买珠宝开场的电影吗？

M: You know, the scene she was wearing a black dress and dark sunglasses with a pearl necklace and long black gloves?

你知道，那个场景她穿着黑色连衣裙，戴着深色太阳镜，配珍珠项链和长黑手套？

M: I see the photo of her in that costume everywhere.

我到处看到她穿着那套服装的照片。

F: No, that one is Breakfast at Tiffany's.

不，那是《蒂凡尼的早餐》。

F: That costume is often referred to as the most famous little black dress of all time.

那套服装常被称为有史以来最著名的小黑裙。

F: Her character in that film is very outgoing and charming, even though in real life, Audrey always described herself as shy and quiet.

她在那部电影中的角色非常外向和迷人，尽管在现实生活中，奥黛丽总是形容自己害羞和安静。

M: So what did she do after her acting career?

那么她在演艺生涯之后做了什么？

F: She dedicated much of her life to helping children in need.

她一生致力于帮助有需要的儿童。

F: Her family received international aid during the war when she was growing up.

在她成长期间，她的家人在战争期间接受了国际援助。

F: I think that left a big impression on her.

我认为那给她留下了深刻的印象。

F: That's where I got the idea to volunteer for children's charity next weekend.

这就是我下周为儿童慈善机构做志愿者想法的来源。

M: I'll join you.

我会加入你。

M: I may not be as charming as Audrey Hepburn, but I'm all for supporting a good cause.

我可能不如奥黛丽·赫本那样迷人，但我完全支持一个好的事业。

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

问题1至4基于你刚刚听到的对话。

Question 1. What does the band say he never really understood?

问题1. 那位男士说他从未真正理解什么？

Question 2. What prevented Audrey Hepburn from becoming a professional dancer?

问题2. 是什么阻止了奥黛丽·赫本成为职业舞者？

Question 3. What do we learn about Audrey Hepburn in real life?

问题3. 关于奥黛丽·赫本在现实生活中的情况，我们了解到什么？

Question 4. Why did Audrey Hepburn devote much of her life to charity after her acting career?

问题4. 为什么奥黛丽·赫本在演艺生涯后致力于慈善事业？

Conversation 2.

对话2。

F: So, how's our presentation about the restructuring of the company coming along?

那么，我们关于公司重组的汇报进展如何？

M: Fine.

很好。

M: I'm putting the finishing touches to it now, but we'll have to be prepared for questions.

我现在正在对它进行最后的润色，但我们必须准备好回答问题。

F: Yes, there's already a feeling that this is a top-down change.

是的，已经有一种感觉，认为这是一项自上而下的变革。

F: We really need to get everyone on board.

我们真的需要让每个人都参与进来。

M: Well, there's been an extensive consultation period.

嗯，已经有一个广泛的咨询期。

F: I know, but there's always the feeling that if it isn't broke, don't fix it.

我知道，但总有一种感觉，如果没坏就不要修。

F: People are worried about their jobs, too.

人们也担心他们的工作。

M: I think we need to stress that while there'll be some job changes, there won't be anyone getting dismissed.

我认为我们需要强调，虽然会有一些工作变动，但不会有人被解雇。

M: In fact, we're looking to take on more staff.

事实上，我们计划招聘更多员工。

F: Agreed.

同意。

F: You can hardly blame people for worrying, though.

然而，你很难责怪人们担心。

M: We need to make it clear that it's not just change for change's sake.

我们需要明确表示，这不仅仅是为了改变而改变。

M: In other words, we really must make the case for why we are doing it.

换句话说，我们必须真正说明我们为什么这样做。

F: So, what's the outline of the presentation?

那么，汇报的大纲是什么？

M: I'll start with a brief review of the reasons for the change, that we really need to make a clean break to restart growth.

我将从简要回顾变革的原因开始，即我们确实需要彻底重新开始以恢复增长。

M: After that, I'll outline the new company structures and who's going where.

之后，我将概述新的公司结构以及人员安排。

M: Then, I'll hand it over to you to discuss the timeline and summarize, and we'll take questions together at the end.

然后，我会交给你讨论时间线并进行总结，最后我们一起回答问题。

F: Anything else?

还有别的吗？

M: Oh, yeah.

哦，对了。

M: We should let the staff know the channels of communication, you know, who they can contact or direct questions to about these changes.

我们应该让员工知道沟通渠道，你知道，他们可以就这些变革联系谁或向谁提问。

F: Yes.

是的。

M: And we can collect some frequently asked questions and present some general answers.

我们可以收集一些常见问题并提供一些一般性答案。

F: Hmm.

嗯。

M: And we'll make the presentation and the questions available via the company's own computer network, right?

并且我们将通过公司自己的计算机网络提供汇报和问题，对吧？

F: Yes.

是的。

M: We'll make a page on the network where staff can download all the details.

我们将在网络上创建一个页面，员工可以在那里下载所有细节。

F: All right.

好的。

F: Perhaps we should do a practice run of the presentation first?

也许我们应该先进行一次汇报的演练？

M: You bet.

当然。

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

问题5到8基于你刚才听到的对话。

Question 5. What is the man going to do?

问题5. 男人打算做什么？

Question 6. What does the man say about the restructuring?

问题6. 男人关于重组说了什么？

Question 7. What will the man explain first?

问题7. 男人将首先解释什么？

Question 8. How can the staff learn more about the company's restructuring?

问题8. 员工如何能更多地了解公司的重组？

Passage 1.

段落1。

Airline passengers have to deal with a lot these days, getting bumped from flights and losing luggage on top of the general anxiety that nervous passengers always feel.

如今，航空公司乘客面临诸多挑战，除了紧张乘客常有的普遍焦虑外，还可能遭遇航班拒载和行李丢失。

At the Cincinnati-Northern Kentucky International Airport, miniature horses deliver a calming force two times a month.

在辛辛那提-北肯塔基国际机场，每月两次，迷你马会带来一种安抚力量。

Denver and Ruby are two of the 34 therapy horses brought in from a local farm.

Denver和Ruby是34匹从当地农场引入的治疗马中的两匹。

They can usually be found in the ticket counter area, interacting with travelers.

它们通常可以在售票区找到，与旅客互动。

More than 30 airports across the country now have therapy dogs.

全国超过30个机场现在有治疗犬。

San Francisco has a therapy pig.

旧金山有一头治疗猪。

San Jose, California, began a dog program after the terrorist attacks of September 11.

加利福尼亚州的圣何塞在9月11日恐怖袭击后开始了一个狗项目。

Since its beginning, the program has now grown and has 21 therapy dogs and a therapy cat.

自启动以来，该项目现已发展壮大，拥有21只治疗犬和一只治疗猫。

The animals don't get startled.

这些动物不会受惊。

They have had hundreds of hours of airport training, so they are used to having luggage and people crowding around them.

它们已经接受了数百小时的机场训练，所以习惯了行李和人们在它们周围拥挤。

These professional animals are probably better at finding their way in the airports than the most frequent of travelers.

这些专业动物可能在机场里比最频繁的旅客更擅长找路。

The passengers often say that seeing animals makes them feel much better and helps them to calm down before a flight.

乘客们常说，看到动物让他们感觉好多了，并帮助他们在飞行前冷静下来。

This little bit of support can sometimes make a big difference.

这一点点的支持有时能产生很大不同。

Some passengers enjoy the animals so much that they call the airport to schedule flights around their visits.

一些乘客非常喜欢这些动物，以至于他们打电话给机场，根据动物的访问时间来安排行程。

Visits to nursing homes and schools are also a regular part of the horses' schedule.

访问养老院和学校也是这些马匹日程的常规部分。

Their owner is already working on a new idea for a therapy animal, donkeys.

它们的主人已经在为一种新的治疗动物——驴——制定新计划。

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 is special about the Cincinnati-Northern Kentucky International Airport?

问题9。辛辛那提-北肯塔基国际机场有什么特别之处？

Question 10. What are the trained animals probably capable of doing in an airport?

问题10。受过训练的动物在机场可能擅长做什么？

Question 11. What do some passengers try to do?

问题11。一些乘客试图做什么？

Passage 2.

短文2。

Hello, viewers!

观众朋友们，你们好！

Today, I'm standing at a 2,000-year-old Roman-era site.

今天，我站在一个有2000年历史的罗马时代遗址。

Here, the brightly colored scenes that once decorated a mansion are being dug up.

在这里，曾经装饰一座豪宅的鲜艳场景正在被发掘。

These scenes are turning up in the southern French city of Arles, surprising the historians who have been working here since 2014.

这些场景出现在法国南部城市阿尔勒，令自2014年以来一直在此工作的历史学家们感到惊讶。

Patches of paint still cling to the stone walls of the bedroom and reception hall.

卧室和接待厅的石墙上仍然附着着一块块油漆。

Some of these painted walls are preserved in places to a height of one meter.

其中一些绘有壁画的墙面在局部保存高达一米。

In addition, thousands of fragments that fell off the walls have been recovered.

此外，从墙上掉落的成千上万碎片已被找回。

These pieces have been put back together with great care and display a variety of images.

这些碎片经过精心拼接，展示了各种各样的图像。

Some of these images include figures never seen before in France, such as a woman playing a stringed instrument, possibly a character from mythology.

其中一些图像包括在法国前所未见的形象，例如一位弹奏弦乐器的女子，可能是一个神话人物。

The paintings were done with such skill and with such expensive dyes that experts believe the artists originally came from Italy.

这些画作技艺精湛，使用昂贵的染料，因此专家认为艺术家原本来自意大利。

They were likely hired by one of the city's elite.

他们很可能被该城市的精英之一所雇用。

Perhaps a Roman official wanted Pompeii-like interior to remind him of home.

也许一位罗马官员想要类似庞贝的室内装饰，以提醒他家乡。

He was probably stationed in this provincial trading port founded in 46 BC as a colony for veterans of the Roman army.

他可能驻扎在这个省级贸易港口，该港口于公元前46年建立，作为罗马军队退伍军人的殖民地。

Or maybe a wealthy local wanted to show off his worldly sophistication.

或者也许一位富有的当地人想要炫耀他的世故圆滑。

The paintings may yield even more stunning surprises as additional sections are put together like pieces of a puzzle.

随着更多部分像拼图一样被拼接起来，这些画作可能会带来更令人惊叹的惊喜。

Whoever it was that created such magnificent pieces of art, they surely had no idea that their work would still be around thousands of years later.

无论是谁创造了如此宏伟的艺术品，他们肯定没有料到他们的作品会在几千年后仍然存在。

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

问题12到15基于你刚才听到的短文。

Question 12. Where is the speaker standing?

问题12。说话者站在哪里？

Question 13. What do the thousands of fragments display when they are put back together?

问题13。当这些成千上万的碎片被拼接在一起时，它们展示了什么？

Question 14. What makes experts think the paintings were done by artists from Italy?

问题14。是什么让专家认为这些画作是由来自意大利的艺术家完成的？

Question 15. What do we learn from the passage about the owner of the mansion?

问题15。从短文中我们了解到豪宅主人的什么信息？

Recording 1.

第一段录音。

Good afternoon class.

下午好，同学们。

Today I want to discuss with you a new approach to empirical research.

今天我想和大家讨论一种实证研究的新方法。

In the past, scientists often worked alone.

过去，科学家经常独自工作。

They were confined to the university or research center where they worked.

他们局限于自己工作的大学或研究中心。

Today, though, we are seeing mergers of some of the greatest scientific minds, regardless of their location.

然而今天，我们看到一些最伟大的科学头脑的融合，无论他们身处何地。

There has never been a better time for collaborations with foreign scientists.

与外国科学家合作的时机从未如此好过。

In fact, the European Union is taking the lead.

事实上，欧盟正在引领潮流。

Spurred on by funding policies, half of European research articles had international co-authors in 2007.

在资助政策的推动下，2007年有一半的欧洲研究论文拥有国际合著者。

This is more than twice the level of two decades ago.

这是二十年前水平的两倍多。

The European Union's level of international co-authorship is about twice that of the United States, Japan and India.

欧盟的国际合作作者水平大约是美国、日本和印度的两倍。

Even so, the levels in these countries are also rising.

即便如此，这些国家的水平也在上升。

This is a sign of the continued allure of creating scientific coalitions across borders.

这表明跨越国界创建科学联盟的吸引力持续存在。

Andras Schubert, a researcher at the Institute for Science Policy Research, says that the rise in collaboration is partly out of necessity.

科学政策研究所的研究员安德拉斯·舒伯特表示，合作的增加部分是由于必要性。

This necessity comes with the rise of big science.

这种必要性伴随着大科学的兴起。

Many scientific endeavors have become more complicated.

许多科学研究变得更加复杂。

These new complications require the money and labor of many nations.

这些新的复杂性需要多国的资金和劳动力。

But, he says, collaborations have also emerged because of increased possibilities.

但他说，合作的出现也是由于可能性的增加。

The Internet allows like-minded scientists to find each other.

互联网让志同道合的科学家能够找到彼此。

Simultaneously, dramatic drops in communication costs ease long-distance interactions.

同时，通信成本的急剧下降使得远距离交流变得容易。

And there's a reward.

而且还有回报。

Studies of citation counts show that internationally co-authored papers have better visibility.

对引用次数的研究表明，国际合作论文的可见度更高。

Schubert says international collaboration is a way to spread ideas in wider and wider circles.

舒伯特说，国际合作是一种将思想传播得越来越广的方式。

Caroline Wagner, a research scientist at George Washington University, notes that international collaborations offer additional flexibility.

乔治华盛顿大学的科研人员卡罗琳·瓦格纳指出，国际合作提供了额外的灵活性。

Whereas local collaborations sometimes persist past the point of usefulness because of social or academic obligations, international ones can be cultivated and dropped more freely.

而本地合作有时因社会或学术义务而持续超出实用阶段，国际合作则可以更自由地培养和放弃。

The collaborative trend is true across scientific disciplines.

合作趋势在所有科学学科中都是真实的。

Some fields, though, have a greater tendency for it.

然而，一些领域对此有更大的倾向。

Particle physicists and astronomers collaborate often.

粒子物理学家和天文学家经常合作。

This is because they must share expensive facilities.

这是因为他们必须共享昂贵的设施。

Mathematicians, by contrast, tend historically towards solitude.

相比之下，数学家历史上倾向于独处。

As a consequence, they lag behind other disciplines.

因此，他们落后于其他学科。

However, Wagner says, partnerships are rising there, too.

然而，瓦格纳说，那里的合作也在增加。

The level of collaboration also varies from country to country.

合作水平也因国家而异。

There are historical and political reasons as to why collaborations emerge, says Wagner.

瓦格纳说，合作的出现有历史和政治原因。

This rise is also apparently boosted by policies embedded in European framework funding schemes.

这种增长显然也受到嵌入欧洲框架资助计划中的政策的推动。

These policies underlie funding requirements that often require teamwork.

这些政策构成了资助要求的基础，这些要求通常需要团队合作。

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

问题16到18基于你刚刚听到的讲座。

Question 16. What do we learn about the research funding policies in the European Union?

问题16. 关于欧盟的研究资助政策，我们了解到什么？

Question 17. Why do researchers today favor international collaboration?

问题17. 为什么当今的研究人员偏爱国际合作？

Question 18. What do we learn about the field of mathematics?

问题18. 关于数学领域，我们了解到什么？

Recording 2.

录音二。

Good evening.

晚上好。

In 1959, on the day that I was born, a headline in Life magazine proclaimed, Target Venus.

1959年，在我出生的那一天，《生活》杂志的一则标题宣称：目标金星。

There may be life there.

那里可能有生命。

It told of how scientists rode a balloon to an altitude of 80,000 feet to make telescope observations of Venus' atmosphere and how their discovery of water raised hopes that there could be living things there.

它讲述了科学家如何乘坐气球升至80,000英尺的高度，对金星大气层进行望远镜观测，以及他们发现水如何引发了那里可能存在生物的希望。

As a kid, I thrilled to tales of adventure in Isaac Asimov's juvenile science fiction novel Lucky Star and the Oceans of Venus.

小时候，我为艾萨克·阿西莫夫的少年科幻小说《幸运星与金星海洋》中的冒险故事而激动。

For many of my peers, though, Venus quickly lost its romance.

然而，对许多我的同龄人来说，金星很快失去了它的浪漫色彩。

The very first thing that scientists discovered with a mission to another planet was that Venus was not at all the earthly paradise that fiction had portrayed.

科学家通过任务探索其他行星时发现的第一件事是，金星根本不是小说所描绘的人间天堂。

It is nearly identical to our own planet in bulk properties such as mass, density, and size, but its surface has been cooked and dried by an ocean of carbon dioxide.

它在质量、密度和大小等整体属性上几乎与我们的地球相同，但其表面被二氧化碳海洋烘烤和干燥。

Trapped in the burning death grip of a runaway greenhouse effect, Venus has long been held up as a cautionary tale for everything that could go wrong on a planet like Earth.

被困在失控温室效应的致命炽热掌控中，金星长期以来被视为一个警示故事，提醒在像地球这样的行星上可能发生的一切错误。

As a possible home for alien life, it has been voted the planet least likely to succeed.

作为外星生命可能的家园，它被投票为最不可能成功的行星。

But I have refused to give up on Venus, and over the years my stubborn loyalty has been justified.

但我拒绝放弃金星，多年来，我固执的忠诚得到了证明。

The rocky views glimpsed by Venera 9 and other Russian landers suggested a tortured volcanic history.

金星9号和其他俄罗斯着陆器瞥见的岩石景象暗示了一段坎坷的火山历史。

That was confirmed in the early 1990s by the American Magellan orbiter, which used radar to peer through the planet's thick clouds and map out a rich, varied, and dynamic surface.

这在20世纪90年代初被美国麦哲伦轨道器证实，它使用雷达穿透该行星的浓密云层，绘制出丰富、多样且动态的表面地图。

The surface formed mostly in the last billion years, which makes it fresher and more recently active than any rocky planet other than Earth.

表面主要在过去十亿年形成，这使得它比除了地球之外的任何岩石行星都更清新、更近期活跃。

Russian and American spacecraft also found hints that its ancient climate might have been wetter, cooler, and possibly even friendly to life.

俄罗斯和美国的航天器也发现迹象表明，其古代气候可能更湿润、更凉爽，甚至可能适合生命。

Measurements of density and composition imply that Venus originally formed out of basically the same stuff as Earth.

密度和成分的测量表明，金星最初由与地球基本相同的物质形成。

That presumably included much more water than the tiny trace we find blowing in the thick air today.

这推测包括比我们今天在浓密空气中发现的微小痕迹更多的水分。

Thus our picture of Venus at around the time life was getting started on Earth is one of warm oceans, probably rich with organic molecules, splashing around rocky shores and volcanic vents.

因此，我们在生命在地球上开始时的金星画面是温暖的海洋，可能富含有机分子，在岩石海岸和火山口周围飞溅。

The sun was considerably less bright back then, so Venus was arguably a cozier habitat for life than Earth.

那时的太阳要暗得多，因此可以说金星比地球更适合生命栖息。

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

问题19至22基于您刚刚听到的讲座。

Question 19. What do we learn from the Life magazine article?

问题19. 我们从《生活》杂志的文章中学到了什么？

Question 20. What are scientists' findings about Venus?

问题20. 科学家对金星的发现是什么？

Question 21. What information did Russian and American space probes provide about Venus?

问题21. 俄罗斯和美国的太空探测器提供了关于金星的什么信息？

Recording 3.

录音3。

I'm a psychology professor at the University of British Columbia.

我是不列颠哥伦比亚大学的心理学教授。

I specialize in cultural psychology, examining similarities and differences between East Asians and North Americans.

我专攻文化心理学，研究东亚人和北美人的相似之处和差异。

Our research team has been looking at cultural differences in self-enhancing motivations, how people have positive feelings towards not only themselves, but things connected to themselves.

我们的研究团队一直在研究自我提升动机中的文化差异，即人们不仅对自己，而且对与自身相关的事物产生积极情感的方式。

For example, when you own something, you view it as more valuable than when you don't own it.

例如，当你拥有某物时，你会认为它比你未拥有时更有价值。

It's called the endowment effect.

这被称为禀赋效应。

The strength of that effect is stronger in Western cultures than in East Asian cultures.

这种效应在西方文化中比在东亚文化中更强。

So we've been looking at other ways of seeing whether this motivation to view oneself positively is shaped by cultural experiences.

因此，我们一直在寻找其他方式，以观察这种积极看待自己的动机是否受文化经历塑造。

We've also started to look at how culture shapes sleep.

我们已经开始研究文化如何塑造睡眠。

We are still in the exploratory stages of this project, although what's noteworthy is that East Asians on average sleep about an hour and a half less each night than North Americans do.

我们仍处于这个项目的探索阶段，但值得注意的是，东亚人平均每晚比北美人少睡大约一个半小时。

And it's not a more efficient sleep, not like they're compressing relatively more value out of their hours.

而且这不是更高效的睡眠，并不是他们从睡眠时间中压缩出相对更多的价值。

Other studies have found that even infants in East Asia sleep about an hour less than European infants.

其他研究发现，即使是东亚的婴儿也比欧洲婴儿少睡大约一小时。

So we're trying to figure out how culture shapes the way you sleep.

因此，我们正试图弄清文化如何塑造你的睡眠方式。

Our experiment does not take place in a sleep lab.

我们的实验不是在睡眠实验室进行的。

Instead, we lend people motion-detecting watches and they wear them for a week at a time.

相反，我们借给人们运动检测手表，他们每次佩戴一周。

Whenever they are not having a shower or swimming, they keep it on.

只要他们不在淋浴或游泳，他们就一直戴着它。

These kinds of watches are used in sleep studies as a way of measuring how long people are sleeping, how efficient their sleep is, and whether they are waking up in the night.

这类手表在睡眠研究中用于测量人们睡眠时长、睡眠效率以及是否夜间醒来。

Ideally, I'd like to take this into a controlled lab environment.

理想情况下，我希望将此纳入受控的实验室环境。

We'll see where the research points us.

我们将看研究指向何方。

We usually start off with the more affordable methods.

我们通常从更经济实惠的方法开始。

And if everything looks promising, then it'll justify trying to build a sleep lab and study sleep across cultures that way.

如果一切看起来有希望，那么它将证明尝试建立睡眠实验室并以这种方式跨文化研究睡眠是合理的。

Why do we study sleep?

我们为什么研究睡眠？

Sleep is something that has really been an unexplored topic cross-culturally.

睡眠在跨文化研究中确实是一个未被探索的话题。

I'm attracted to it because culture isn't something that only shapes the way our minds operate.

我对此感兴趣，因为文化不仅仅是塑造我们思维运作方式的事物。

It shapes the way our bodies operate, too, and sleep is at the intersection of those.

它也塑造我们身体的运作方式，而睡眠正位于这两者的交汇处。

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

第23至25题基于你刚才听到的讲座。

Question 22. What does the speaker mainly study?

第22题。演讲者主要研究什么？

Question 23. What does the speaker say about North Americans?

第23题。演讲者对北美人说了什么？

Question 24. How did the speaker conduct the sleep study?

第24题。演讲者如何进行睡眠研究？

Question 25. What does the speaker say about research on sleep?

第25题。演讲者对睡眠研究说了什么？