tpo44听力答案及解析Lecture1，对照原文及音频进行练习，提供手机号可以下载听力原文及音频!
Lecture 1
1. What is the main purpose of the lecture? 【内容主旨题】
A. To provide an example of a practical use of nanotechnology.
B. To show the origins of the field of nanotechnology.
C. To give a brief outline of the main concepts of nanotechnology.
D. To explain the growing interest in nanotechnology research.
答案：A
破题关键词汇：
解析：(从20秒开始，原文重现：So, I want to talk about how nanotechnology is being used today. And just to give you an idea, we’ll look at one particular application.)
教授提到要探讨纳米技术如今是如何被运用的，并通过一个特别的运用来了解。
选项A的an example of a practical use与原文意思一致，通过例子来解释纳米技术的运用，故选项正确; B未提及纳米技术的起源origins; C的a brief outline一个简短的概述在原文中未被提及;D的growing interest逐渐增长的兴趣在原文中也未被提及。
2. How does the professor organize the information he presents to the class? 【组织结构题】
A. He describes the inspiration behind the nanocoating, then how the coating works.
B. He describes how the nanocoating is currently marketed, then the inspiration behind it.
C. He explains how fogging occurs, then the basic concepts of nanotechnology.
D. He explains how fogging occurs, then how the nanocoating prevents it.
答案：D
破题关键词汇：
解析：(从54秒开始，原文重现：Now, fogging often occurs when a cold surface comes into contact with warm moist air, such as when a glass shower door or mirror fogs up during a warm shower.
Now, what's actually happening is, what the fog is, is thousands of tiny spherical water droplets condensing on the surface of the glass. Light hits the water droplets and is scattered in random directions, causing the fogging effect.
Now, the kind of spray-on treatments I mentioned. Well, they wear off. What happens is they cause the tiny water droplets to flatten when they condense on the surface of the shower door or bathroom mirror or whatever object it is, it's been applied to.)
教授讲了雾化发生的条件并解释了什么是雾化，并提出了防止雾化的方法。
选项A中纳米涂层的启发未被提及;选项B纳米涂层是如何被推广的在原文中并未被提及;选项C前半句的雾化是怎么形成的和原文结构一致，后半句讲的纳米技术的基本概念并未被提及;选项D教授解释了雾化是如何发生的接着讲了纳米涂层是如何防止它的，与原文的结构一致，选项正确。
3. According to the professor, how does the new nanocoating work? 【细节题】
A. By forcing light to bounce off a glass-coated polymer.
B. By forcing water droplets to roll off an ultrathin surface.
C. By causing water droplets to merge into a single sheet of water.
D. By causing light to scatter randomly in many directions.
答案：C
破题关键词汇：new nanocoating
解析：(从2:34秒开始，原文重现： The coating prevents fog from developing, because it loves water. It attracts the water droplets, sucking them into the tiny pores. And that alters the shape of the droplets. The droplets are forced to flatten and to join together into a single sheet of water, rather than remaining as single droplets, each of which is a sphere that scatters light in different directions.)
原文里教授讲涂层是如何防止雾化发展的。选项A的light在原文的细节中并未被提及;选项B的迫使水滴从极薄的表面滚落，原文的细节是水滴被压平并聚集成一片水，选项错误;选项C使水滴聚集成一片独立的水，与原文细节一致;选项D中提到light随机散射在不同的方向，选项错误。
4. According to the information in the lecture, why does the new nanocoating not last as long on plastic as it does on glass? 【细节题】
A. Plastic cannot withstand extremely high temperatures.
B. The internal structure of plastic repels a positively charged polymer.
C. The coating solution scatters when it comes into contact with plastic.
D. Plastic surfaces scratch more easily than glass surfaces do.
答案：A
破题关键词汇：not last on plastic, glass
解析： (从3:29秒开始，原文重现： But that's possible only on materials that can withstand high heat. Glass? Yes. Plastics? No. But they’re working on solving that problem, trying to come up with a way to coat plastics and other materials, durably and effectively.)
教授讲到材料要能耐高温，并提到玻璃是可以的，塑料是不可以的。选项A明确提到塑料不能耐极高的温度，与原文一致;选项B并未讲到塑料内部结构，选项错误;选项C当接触到塑料涂层解决方案分散了，在原文中并未被提及;选项D比起玻璃表面，塑料表层更容易刮擦，原文并未对两者进行比较。
5. What inspired the team of scientists in developing the new coating? 【细节题】
A. A problem the team frequently encountered in everyday life.
B. The ineffectiveness of spray solutions in flattening water droplets.
C. The leaves of a plant that the team had been investigating.
D. Interactions observed between silica nanoparticles and polymers.
答案：C
破题关键词汇：scientists
解析： (从3:47秒开始，原文重现： Interestingly, it was a plant, the lotus plant that inspired this work. I guess you could say inspired it in an indirect sort of way. The leaves of this plant are what we call superhydrophobic. Lotus leaves, being superhydrophobic, don't attract water. They repel it, in a big way. When raindrops fall on lotus leaves, they remain spherical. They roll right off.)
教授提到是莲花这种植物用间接的方式启发了他们的工作。选项A科学家团队在每天的生活中碰到的一个问题，在原文这并没有提到这个细节;选项B中的spray solutions喷雾液并没有被提及;选项C科学家土堆一直在研究的植物的叶子，与原文讲的莲花这个植物的叶子细节一致，选项正确;选项D中的silica二氧化硅和polymers聚合物之间的反应在原文中并未被提及。
6. What is the professor's opinion about the approach inventors took to the development of the new nanocoating? 【态度题】
A. He thinks other inventors should use a similar approach.
B. He is impressed by the flexibility of their approach.
C. He is surprised the research process took so long.
D. He thinks they should have spent more time testing a superhydrophobic coating.
答案：B
破题关键词汇：new
解析： (从4:17秒开始，原文重现： So for a long time, the Massachusetts scientists tried to create a coating that acted like these lotus leaves, a coating that was superhydrophobic. But then they began to think about the opposite extreme. Could they accomplish their goal by making a coating that, instead of repelling water, actually, attracted water?)
教授讲很长一段时间科学家们试图发明一种涂层像莲花的叶子一样疏水，但接着他们开始考虑相反的极端，就是吸水的涂层。选项A提到的是别的发明者应当用一个相似的方法，与原文相悖;选项B教授对他们灵活的方法印象深刻，与原文中提到的两种相反的灵活方法意思一致;选项C教授并未对长时间的研究过程感到惊讶;选项D在原文中教授并未提及对测试超疏水的涂层多花点时间。