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1、Unit 1 Science is a kind of knowledge which is a very useful tool in solving the technical problems of industry, agriculture, warfare, and medicine. To understand the width and depth to which science can be applied to the material and spiritual problems that confront individuals and nations requires
2、 an understanding of what science really is. The word science comes to us from a Latin word, scire, which means “to know”. Then, in a broad sense, science is simply what we know, the total of all human knowledge. But the definition of science as all human knowledge would not be a workable one, for i
3、t is obvious that there are different types of knowledge. The kinds differ according to how the knowledge was obtained, and also according to what frame of experience it fits. What we know of the arts, literature, law, religion, and technical know-how, are more or less separate funds of knowledge. T
4、hey have little to do with what we commonly call science.Science is also called natural science to distinguish it from other branches of learning. Science is concerned with nature, that is, with knowledge of the characteristics and operations of any and all natural things and happenings. Science emb
5、races all of nature, and expresses our best ideas of how natural phenomena are related to each other and are to be formed into what is called the universe. Science has many characteristics, and to understand what science is requires a detailed examination of these properties and peculiarities. A num
6、ber of writers have asserted that science is really only a method the scientific method. Such a definition is an oversimplification, but it is certain that the science method plays an important role in determining the nature of scientific knowledge.Unit 3Lots of people pretend that they never read a
7、dvertisements, but this claim is hardly believable. It is almost impossible not to read advertisements these days. Just think what fun they often provide! Imagine what a bus and railway station would be like without advertisements? Would you enjoy gazing helplessly at a bank wall while waiting for a
8、 bus or train? Would you like to read a daily paper closely-printed with columns of news? A cheerful, witty advertisement makes such a difference to a drab wall or newspaper. We must not forget, either, that advertising makes a positive contribution to our pockets. Newspapers, radio or television st
9、ations could not subsist without this source of revenue. The fact that we pay so little for our daily paper can enjoy so many programs on air is due entirely to the money spent by advertisers. Just think what a newspaper would cost if we had to pay its full price! Another thing we mustnt forget is t
10、he “small ads” which are in virtually every newspaper. What a tremendously useful service they perform for the community! Just about everything can be accomplished through these columns, for instance, you can find a job, buy or sell a house, announce a birth, marriage or death. Its the advertisement
11、 among the advertisements.Unit fourFew great names in music spell as much magic to the average concert-goer as that of Tachaikowsky. In almost every musical from will be found a work of his ranking high in popularity. And quite deservedly so. Tschaikowskys music is filled with a warm humanity and st
12、irring drama. The themes and feeling are easy to grasp. The personal, intimate note is so strong in this music that we find it natural, while listening to the Pathetic Symphony or the Nutcracker Ballet Suite, for example, to share Tschaikowskys joys and sorrows. His music seems to take us into his c
13、onfidence and show us the secret places of his heart. Although Tschaikowskys range of moods is widefrom the whimsical play of light fantasy to stormy outcries of anguishessentially he was a melancholy man, in his music as in his life. Perhaps it is the genuineness of his music in conveying strong em
14、otions and suffering that has drawn millions to his symphonies and concertos. A frank sincerity and warm-heartedness flow from his music. The best of his melodies linger hauntingly in the mind and heart. As long as sincere feeling expressed in sincere artistic from can move the hearts of men, Tschai
15、kowskys music will continue to hold a high place in the concert hall and opera house.Only Beethoven and Mozart can rival Tschaikowsky in the number of compositions in various musical forms that stands out as repertory favorites. Tschaikowskys violin concerto is as much a “request” item as Beethovens
16、. The Pathetic Symphony ranks with the three or four enduring favorites of the repertory. Tschaikowskys Nutcracker ballet is probably the most popular suite of its kind in music.Unit six Emphasis on “practicalities” is being characterized by the subordination of the social sciences to the natural sc
17、iences. History is seen not as essential experience to be transmitted to new generations, but as abstractions that carry stale odors. Art is regarded as something that calls for indulgence or patronage and that has no place among the practical realities. Political science is viewed more as a special
18、ized subject for people who want to go into politics than as an opportunity for citizens to develop a knowledgeable relationship with the systems by which human societies are governed. Finally, literature and philosophy are assigned the role of intellectual adornments that have nothing to do with “g
19、enuine” education. Noting is more valuable for anyone who has had a professional or vocational education than to be able to deal with abstractions or complexities, or to feel comfortable with subtleties of thought or language, or to think logically. The doctor who knows only about disease is at a di
20、sadvantage compared with the doctor who knows at least as much about people as he does about pathological organisms. For the technologist, the engineering of co-operation can be just as important as the engineering of moving parts. The social sciences would be expandable only if the human past never
21、 existed or had noting to tell us about the present; if thought processes were irrelevant to the achievement of purpose; if creativity was beyond the human mind and had nothing to do with the joy of living; if human relationships were random aspects of life; if human beings never had to cope with pa
22、nic or pain, or if they never had to anticipate the connection between cause and effect; if all the mysteries of mind and nature were fully probed.Unit sevenWe live in a materialistic society and are nurtured from our earliest years to be acquisitive. Our possessions“mine” and “yours” are clearly la
23、beled from early childhood. When we grow old enough to earn a living, it does not surprise us to discover that success is measured in terms of the money you earn. However, it not only in affluent societies that people are obsessed with the idea of making more money. Consumer goods are desirable ever
24、ywhere and modern industry deliberately sets out to create new markets. Gone are the days when industrial goods were made to last forever. The wheels of the industry must be kept turning. Built-in obsolescence provides the means: goods are made to be discarded. You no sooner acquire this years model
25、 than you are thinking about its replacement.This materialistic outlook has seriously influenced education. Fewer and fewer young people these days acquire knowledge only for its own sake. Every course of studies must lead somewhere, for example, to a bigger wage packet. The demand for hi-tech perso
26、nnel far exceeds the supply and big companies compete with each other to recruit students before they have completed their studies. Tempting salaries and “fringe benefits” are offered to them. Recruiting tactics of this kind have led to the “brain drain”, the phenomena in which highly skilled people
27、 offer their service to the highest bidder. The wealthier nations deprive their poorer neighbors of their most able citizens. While Mammon is worshipped as never before, the rich get richer and the poor, poorer. Unit elevenWe all associate colors with feeling and attitudes. In politics dark blue oft
28、en means “tradition” and red means “social change”. But blue can also mean sadness, and white is often for purity, although in China white is worn for funerals, and red is used to express the joy of a wedding. In Western Europe white is worn at weddings and black for funerals. Advertisers are aware
29、of the importance of selecting colors according to the way people react to them. Soap powders come in white and light blue packets (clean and cold, like ice); cereals often come in brown packets (like wheat fields), but cosmetics never come in brown jars (dirty.).Where do these ideas come from? Max
30、Luscher from the University of Geneva believes that in the beginning life was dictated by two factors beyond our control: night and day. Night brought passivity, and a general slowing down of metabolism; day brought with it the possibility of action, and increase in the metabolic rate, thus providin
31、g us with energy and initiative. Dark blue, therefore, is the color of quiet and passivity, bright yellow the color of hope and activity. In prehistoric times, activity as rule took one of two forms: either we were hunting and attacking, or we were being hunted and defending ourselves against attack
32、. Attack is universally represented by the color red; self-preservation by its complement green. Editors note: Judson Jones is a meteorologist, journalist and photographer. He has freelanced with CNN for four years, covering severe weather from tornadoes to typhoons. Follow him on Twitter: jnjonesjr
33、 (CNN) - I will always wonder what it was like to huddle around a shortwave radio and through the crackling static from space hear the faint beeps of the worlds first satellite - Sputnik. I also missed watching Neil Armstrong step foot on the moon and the first space shuttle take off for the stars.
34、Those events were way before my time.As a kid, I was fascinated with what goes on in the sky, and when NASA pulled the plug on the shuttle program I was heartbroken. Yet the privatized space race has renewed my childhood dreams to reach for the stars.As a meteorologist, Ive still seen many important
35、 weather and space events, but right now, if you were sitting next to me, youd hear my foot tapping rapidly under my desk. Im anxious for the next one: a space capsule hanging from a crane in the New Mexico desert.Its like the set for a George Lucas movie floating to the edge of space.You and I will
36、 have the chance to watch a man take a leap into an unimaginable free fall from the edge of space - live.The (lack of) air up there Watch man jump from 96,000 feet Tuesday, I sat at work glued to the live stream of the Red Bull Stratos Mission. I watched the balloons positioned at different altitude
37、s in the sky to test the winds, knowing that if they would just line up in a vertical straight line we would be go for launch.I feel this mission was created for me because I am also a journalist and a photographer, but above all I live for taking a leap of faith - the feeling of pushing the envelop
38、e into uncharted territory.待添加的隐藏文字内容2The guy who is going to do this, Felix Baumgartner, must have that same feeling, at a level I will never reach. However, it did not stop me from feeling his pain when a gust of swirling wind kicked up and twisted the partially filled balloon that would take him
39、to the upper end of our atmosphere. As soon as the 40-acre balloon, with skin no thicker than a dry cleaning bag, scraped the ground I knew it was over.How claustrophobia almost grounded supersonic skydiverWith each twist, you could see the wrinkles of disappointment on the face of the current recor
40、d holder and capcom (capsule communications), Col. Joe Kittinger. He hung his head low in mission control as he told Baumgartner the disappointing news: Mission aborted.The supersonic descent could happen as early as Sunday.The weather plays an important role in this mission. Starting at the ground,
41、 conditions have to be very calm - winds less than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our day-to-day weather lives. It will climb higher than the tip of Moun
42、t Everest (5.5 miles/8.85 kilometers), drifting even higher than the cruising altitude of commercial airliners (5.6 miles/9.17 kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause), he can expect a lot of turbulence.The balloon will slowly drift to the edge
43、of space at 120,000 feet (22.7 miles/36.53 kilometers). Here, Fearless Felix will unclip. He will roll back the door.Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform.Below, the Earth becomes the concrete bottom of a swimming pool that he wants to lan
44、d on, but not too hard. Still, hell be traveling fast, so despite the distance, it will not be like diving into the deep end of a pool. It will be like he is diving into the shallow end.Skydiver preps for the big jumpWhen he jumps, he is expected to reach the speed of sound - 690 mph (1,110 kph) - i
45、n less than 40 seconds. Like hitting the top of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him completely.If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down
46、. His team hopes its not needed. Instead, he plans to deploy his 270-square-foot (25-square-meter) main chute at an altitude of around 5,000 feet (1,524 meters).In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have a reserve parachute that will open auto
47、matically if he loses consciousness at mach speeds.Even if everything goes as planned, it wont. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters).It might not be the moon, but Kittinger free fell from 102,800 feet in 1960 - at the dawn of an infamous space race that captured the hearts of many. Baumgartner will attempt to break that record, a feat that boggles the mind. This is one of those monumental moments I will always remember, because there is no way Id miss this.
