学术英语视听说1听力原文.docx

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1、学术英语视听说1听力原文Lessonl 1-1-4Lecturer:Today, I am going to talk to you about one of the most im portant historical figures in European history-Napoleon BonaparteLets start by talking about his early life. Napoleon was born in 1769 on the island of Corsica. When he was only 10 years old, his father sent

2、him to military school in France. Napoleon was not a very good student in most of his classes, but he excelled in mathematics and in military scienceWhen Napoleon was 16 years old, he joined the french army In that year, 1785, he began the military career that would bring him fame, power, riches, an

3、d finally, defeat. After eight years in the army, Napoleon became a general. He was only 24.Napoleon had many victories on the battlefield but he also became involved in French law and politics. And in 1804 at the age of 35, he became the first emperor of fra nee.Napoleon had many victories on the b

4、attlefield, but he also became involved in French law and politics. And in 1804 at the age of 35, he became the first emperor of fra nee Napoleon was many things. He was, first of all, a brilliant military leader, his soldiers were ready to die for him.as a result, Napoleon won many military victori

5、es. At one time he For example children often say such things asMi goed to bedMinstead ofMl went to bed, orHleated ice cream11 instead ofnl ate ice cream In other words, the children have learned the past-tense rule for regular verbs such as walk and kiss, but they haven t learned that they cannot u

6、se this rule for all verbs Some verbs like eat are irregular and the past tense forms for irregular verbs must be learned individually, anyway these mistakes are normal. The children will soon learn to use the past tense for regular and irregular verbs correctly. They then continue to learn other gr

7、ammatical structures in the same way.If we stop to think about it, it1 s quite amazing how quickly children all over the world learn their language. Its also amazing how similar the process is for babies all over the world. You probably dont remember anything about how you learned your first languag

8、e. But now that you1 ve learned learning a first and secon d language may be similar and ss of something about the process, think about how the proc different. After class, why not make a list of some similarities and differences in the processes of child and adult lar learning. Then well talk about

9、 it next time we meed .Lesson7 1-7-4Lecturer:When people think about a robot, they often picture a machine that looks something like a human being. However, that1 s not always the case ! Most robots do not look much like a human being at all.They look like machines, because thats what most of them a

10、re industrial machines. Today, Tm going to talk mostly about industrial robots used in industry. These are robots that do work that for humans would be physicall demanding, repetitive, dangerous, or very boring.Most industrial robots work on an assembly line in a factory.For example, a robot might p

11、ut lids on jars of fruit or stack boxes for shipping. In a car factory, robotic arms on th assembly line join the parts of the car together Other robots tighten the bolts on the cars wheels or paint the car. There are thousands of robots putting cars together in auto assembly plants. These robots ar

12、e very precise when repeating a task.For example, they always tighten bolts with the same exac amount of force. They always move a heavy engine to exactly where it should be. and they always put a hole in the exact same place in every car door, hour after hour. These areexamples of robots doing the

13、work humans could do, but the robots are doing the work more efficiently and precisely.So, just how do robots work? To do its job, a robot first needs a control system. This control system directs the robots mechanical parts. The control system of a robot is, so to speak, the robot1 sHbrain nSo how

14、does a robot HlearnHwhich action to do first and which of its moving parts needs to do that action?The robot learns its job with the help and guidance of a human being.To teach an industrial robot to do something, first a person must use a handheld computer The computer is used to guide the robot,sl

15、,arm and handMthrough the motions it needs to do. Then the rob ot stores the exact movements in its computer memory. The robot has sensors to gather information. So now, the robot will use its sensors to direct its actions. The robotl,tells,its moving parts what to do and then it performs the action

16、. For example, to pick up and move a box, the robot first finds the box. next it decides the weight of the box. Then it decides how much force is needed to lift and move the box. and finally, it finds the correct place to put the box down. It repeats the process over and over until it is turned off

17、It does the same job until it is given a new job and new program to follow.Some scientists think that rob ots of the future will be smarter than todays robots. They may also look more human like, or even animal-like. In fact, they may work andHthink more like humans do. The industrial robots weve be

18、en talkin about so far today are automatic robots. They are known as automatic robots because they are programmed to follow a specific series of movements. Usually, they have parts that move, but they really don t travel around On the other hand, an autonomous machine can change its behavior in rela

19、tion to its surroundings. For example, an autonomous robot with wheels or legs to move around can change direction when it senses that there is something in its way. arobot such as Hondas famous asIMo can detect the movements of people nearby. It can move to avoid bumping into someone coming toward

20、it. asimo can even learn to dance by following themovements of a dancer next to it i don t know whether or when people will welcome autonomous machines or human-like robots, i guess that we will need to think about that in the robo-doctor, robo-teacher, robo-pet, or even our robo-Rriend future, Well

21、 need to think about how we will interact with or Think about that when youre doing your homework this evening. Would a robo-friend help you do your homework?controlled most of Europe, but some countries, including England, Russia, and Austria, fought fiercely against Napoleon His defeathis end- cam

22、e when he decided to attack russia In this military campaign against Russia, he lost most of his army .The great French conqueror died alone, deserted by his famil and his friends. The year was 1821, and Napoleon was only 51Lesson2 1-2-4Lecturer:The lecture for th is class is a b out the city of pom

23、 peii and the natural disaster that occurred there almost 2,000 years ago .Today many rich people w ho live in large m etropolitan areas such as beijing, Paris, and new york leave the city in the summer. They go to the m ountains or to the seashore to escape the city noise and heat, two thousand yea

24、rs ago, wealthy Rom ans did the sa me thing. They left the city of rom e in the summer. many of these wealthy rom ans spent their sum mers in the city of Pom peii, a beautiful city located on the bay of Naples, on the mediterranean Sea.In the sum mer of the year 79 Ce, a young rom an boy w ho later

25、became a very fa m ous rom an historian w as visitin g h is uncle in Pompeii. The boyfs name was pliny the younger.One day pliny w as loo king up at the sky. He saw a frightening sight. It w as a very large dark cloud. This b lack cloud rose hig h into the sky.What Pliny saw was the eruption of the

26、volcano called Mount Vesuvius. Rock and ash flew through the air. the city of Pom peii was at the foot of mount Vesuvius When the volcano first erupted, many people were a ble to get out of the city and escape death. In fact, 18,000 people escaped the terrible disaster. U nfortunately, there was not

27、 enough time for everyone to escape. More than 2,000 people died. These unlucky people were buried alive under the volcanicash. The eruption lasted for about three days.When the eruption w as over, Pom peii w as buried under 20 feet of volcanic rock and ash. the city of Pom peii w as forgotten for a

28、lm ost 1,700 years.In the year 1748 an Italia n farmer was digging on his farm. As he was digging, he uncovered a part of a wall of the an cient city of Pompeii. Soon, archaeologists began to dig in the area, as time went by, much of the a ncient city of Pompeii w as uncovered, today tourists come f

29、rom all over the world to see the ruins of the fa m ous city of pompeii.Lesson3 1-3-4Lecturer：rd like to talk to you today about Steve Jobs. Jobs was someone who changed the world, because he changed the way people act every single day.Jobs was born in 1955. He grew up in California, in an area that

30、 later became known as the Silicon valley. When he was about 14 years old, he became friends with Stephen Wozniak Wozniak was what people in those days called an electronics whiz kid. He liked to design and build his own electronic equipment.In 1975, Wozniak started designing a personal computer. Th

31、is at a time when nobody owned personal computers in their homes. Jobs was young. He was only 20. But even then he had a sharp business brain. Jobs convinced Wozniak that they could build these personal computers in his garage and sell them, a year later, Jobs and wozniak founded the apple computer

32、Company, and started building and selling personal computers.When their apple ii computer went on the market in 1977, it became a huge success Suddenly there was a mass market for a computer that people could buy at a store and use sitting in their own homes The apple II became the worlds first mass

33、 produced personal computer, and by the age of 25, Steve Job was a millionaire.Jobs was brilliant in many ways, but he was not always very good at working with other people. He needed everything to be perfect, and this caused problems at Apple. In 1985, then, Jobs left Apple and started a new comput

34、er company and soon after he also went into business with a company called Pixar Pixar was a company trying to develop a system for using CGI-computer-generated imagery to be used in animated films AndJobs was just the person to help them.In 1995. Pixar released the movie tov story It was the first

35、full-length, computer-generated, animated film. It was a big hit and Pixar became a very, very profita ble company and Steve Jobs became a very, very rich man a billionaire in fact.In the 10 years after leaving apple jobs learned a lot about working with people and running a company. So when he retu

36、rned to apple in 1995. he made many changes.Without Jobs, Apple was not doing so well. But Jobs had a also wanted them to be beautiful objects that people would e vision. He didn t only want personal computers to be useful, h enjoy looking at and using. In 1998, Apple introduced the imac a new deskt

37、op computer and the next year, the iBook, a new laptop computer. People thought both were very attractive and they immediately became very popular, and apple became profitable company again.But Steve Jobs wasnt finished. He had an even bigger vision He believed that personal computers would become t

38、he center the hub, of peoples digital lives. So in 2001 Jobs introduced Apple,s,digital hubnstrategy He told the world that the computer would become the hub of all their electronic equipment. You could connect your camera, your music player and your video recorder to the computer and manage all you

39、r videos, photos, and music using iTunes, iMovie, iPhoto, and other apple programs, ornapps Over the next 10 years, apple created products that made jobs vision a reality. In 2001, the company introduced the iPod, which quickly became the most popular digital music player. In January 2007, Jobs intr

40、oduced the iPhone and suddenly your phone became like a mini computer. It was like having an iPod, a camera, and a phone all in one device that you could hold in your hand. Then three years later he released the iPad onto the market. This really was a small, light computer that you could hold in you

41、r hand.And to use it all you had to do was touch the screen.Jobsfinal vision before he died in Octo ber 2011 was Apple iCloud This is a system that allows apple users to store and manage their data and applications, not in their computer, but over the internet.Jobs may be gone, but there is no quest

42、ion that his vision lives on Jobs was someone who changed the world, not just for our own time, but maybe, who knows, for all time.Lesson* 1-4-4Lecturer:Lets talk a little today a out how roller coasters work and thephysics in volved in a ride on aroller coaster. Im sure many of you have taken a rid

43、e on a roller coaster Person ally, I dont ever want to ride on one again. When i was young, my sister took me on a roller coaster, and I never forgot that frigh te n in g experience.A simple roller coaster consists o f a frame with a track on it .The track is very much like a train track. Th is trac

44、k goes over a serie s of hills and around curves following a path that ends at the sam e p lace it started, a train of cars travels around on th is track, very fast, the cars have two sets of w heels. 0 ne set of w heels rolls on top of the track and the other set of w heels rolls below the track th

45、e w heels below the track are there to keep the fa stm oving cars fro m co m in g o ff th e track.Roller- coaster cars, as you prob ably know, d ont have any m otors or es In stead, a ch ain pulls the cars up the first, tallest and steepest, h ill. A nd th isis how the ride begin s then at the top o

46、f the hill, the ch ain com es off th e cars, and gra v ity takes over. Gravity pushes the cars dow n the other sid e of th e h ill. T he taller a nd steeper the first h ill is, the fa ste r th e rid e willbe, and the farther the cars willtrave I.As the cars roll downhill, they gain speed. When they

47、reach the botto m of the first h ill, the cars have enough speed a d e nergy to send the m up the next hill. A s th e cars n ear the top of the second hill, they begin to slow down, but then, th e cars reach the top of th at hill and start down the other sid e, a n d gravity again pushes them tow a

48、rd the ground. T his process repeats on each hill.OK, so lets go over th is process a g ain. First, the cars are u led b y a ch ain up th e first, h ig h est h ill. Then they go d ow n a very steep slope At th is point, there is enough energy to pull the cars up and over the next hill, a gain, w hen

49、 they reach the bottom of that hill, there is enough energy to dim b the next h ill. T he roller-coaster cars lose energy as the rid e contin ues so the hills have to be sm aller toward the end of the track F in ally, we roll to a stop on ground level, rig ht w here we began.Tom orrow we will talk about the forces that press on our bod ies and keep us in our seats w hen the cars of a roller coaster travel in a loop th at puts us up side down.Lesson5 1-5-4Lecturer:What Id like