新概念英语4课文(共40页).doc

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1、精选优质文档-倾情为你奉上 1NEW CONCEPT ENGLISH (IV)(new version) 2Lesson 1 Finding Fossil manWe can read of things that happened 5,000 years ago in the Near East, where people first learned to write. But there are some parts of the world where even now people cannot write. The only way that they can preserve th

2、eir history is torecount it as sagas-legends handed down from one generation of story-tellersto another. These legends are useful because they can tell us something aboutmigrations of people who lived long ago, but none could write down what they did.Anthropologists wondered where the remote ancesto

3、rs of the Polynesianpeoples now living in the Pacific Islands came from. The sagas of these peopleexplain that some of them came from Indonesia about 2,000 years ago.But the first people who were like ourselves lived so long ago that even theirsagas, if they had any, are forgotten. So archaeologists

4、 have neither history norlegends to help them to find out where the first modern men came from.Fortunately, however, ancient men made tools of stone, especially flint, becausethis is easier to shape than other kinds. They may also have used woodand skins, but these have rotted away. Stone does not d

5、ecay, and so the tools oflong ago have remained when even the bones of the men who made them havedisappeared without trace.3Lesson 2 Spare that spiderWhy, you may wonder, should spiders be our friends ? Because they destroy somany insects, and insects include some of the greatest enemies of the huma

6、nrace. Insects would make it impossible for us to live in the world; they woulddevour all our crops and kill our flocks and herds, if it were not for the protectionwe get from insect-eating animals. We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fractio

7、n of the number destroyed by spiders. Moreover, unlike some of the other insect eaters, spiders never dothe least harm to us or our belongings.Spiders are not insects, as many people think, nor even nearly related to them.One can tell the difference almost at a glance for a spider always has eight l

8、egsand an insect never more than six.How many spiders are engaged in this work on our behalf ? One authority on spiders made a census of the spiders in a grass field in the south of England, andhe estimated that there were more than 2,250,000 in one acre, that is something like 6,000,000 spiders of

9、different kinds on a football pitch. Spiders are busy for at least half the year in killing insects. It is impossible to make more than the wildest guess at how many they kill, but they are hungry creatures, not content with only three meals a day. It has been estimated that the weight of all the in

10、sectsdestroyed by spiders in Britain in one year would be greater than the total weight of all the human beings in the country.T. H. GILLESPIE Spare that Spider from The Listener 4Lesson 3 Matterhorn manModern alpinists try to climb mountains by a route which will give them goodsport, and the more d

11、ifficult it is, the more highly it is regarded. In the pioneeringdays, however, this was not the case at all. The early climbers were looking forthe easiest way to the top because the summit was the prize they sought, especially if it had never been attained before. It is true that during their expl

12、orations they often faced difficulties and dangers of the most perilous nature, equippedin a manner which would make a modern climber shudder at the thought, but they did not go out of their way to court such excitement. They had a single aim,a solitary goal-the top!It is hard for us to realize nowa

13、days how difficult it was for the pioneers. Exceptfor one or two places such as Zermatt and Chamonix, which had rapidly become popular, Alpine villages tended to be impoverished settlements cut off from civilization by the high mountains. Such inns as there were were generally dirty and flea-ridden;

14、 the food simply local cheese accompanied by bread oftentwelve months old, all washed down with coarse wine. Often a valley boasted no inn at all, and climbers found shelter wherever they could-sometimes with the local priest (who was usually as poor as his parishioners), sometimes with shepherds or

15、 cheesemakers. Invariably the background was the same: dirt and poverty, and very uncomfortable. For men accustomed to eatingseven-course dinners and sleeping between fine linen sheets at home, the change to the Alpsmust have been very hard indeed. 5Lesson 4 Seeing handsIn the Soviet Union several c

16、ases have been reported recently of people who can read and detect colours with their fingers, and even see through solid doors and walls. One case concerns an eleven-year-old schoolgirl, Vera Petrova, who has normal vision but who can also perceive things with different parts of her skin, and throu

17、gh solid walls. This ability was first noticed by her father. One day she came into his office and happened to put her hands on the door of a locked safe.Suddenly she asked her father why he kept so many old newspapers locked away there, and even described the way they were done up in bundles.Veras

18、curious talent was brought to the notice of a scientific research institute in the town of UIyanovsk, near where she lives, and in April she was given a series of tests by a special commission of the Ministry of Health of the Russian Federal Republic. During these tests she was able to read a newspa

19、per through an opaque screen and, stranger still, by moving her elbow over a childs game of Lotto she was able to describe the figures and colours printed on it; and, in another instance, wearing stockings and slippers, to make out with her foot the outlines and colours of a picture hidden under a c

20、arpet. Other experiments showed that her knees and shoulders had a similar sensitivity. During all these tests Vera was blindfold; and, indeed, except when blindfold she lacked the ability to perceive things with her skin. lt was also found that although she could perceive things with her fingers th

21、is ability ceased the moment her hands were wet. 6Lesson 5 YouthPeople are always talking about the problem of youth . If there is onewhich I take leave to doubt-then it is older people who create it, not the young themselves. Let us get down to fundamentals and agree that the young are after all hu

22、man beings-people just like their elders. There is only one difference between an old man and a young one: the young man has a glorious future before him and the old one has a splendid future behind him: and maybe that is where the rub is. When I was a teenager, I felt that I was just young and unce

23、rtain-that I was a new boy in a huge school, and I would have been very pleased to be regarded as something so interesting as a problem. For one thing, being a problem gives you a certain identity, and that is one of the things the young are busily engaged in seeking. I find young people exciting. T

24、hey have an air of freedom, and they have not a dreary commitment to mean ambitions or love of comfort. They are not anxious social climbers, and they have no devotion to material things. All this seems to me to link them with life, and the origins of things. Its as if they were in some sense cosmic

25、 beings in violent and lovely contrast with us suburban creatures. All that is in my mind when I meet a young person. He may be conceited, illmannered, presumptuous of fatuous, but I do not turn for protection to dreary clichs about respect for elders-as if mere age were a reason for respect. Iaccep

26、t that we are equals, and I will argue with him, as an equal, if I think he is wrong. 7Lesson 6 The sporting spiritI am always amazed when I hear people saying that sport creates goodwill betweenthe nations, and that if only the common peoples of the world could meetone another at football or cricke

27、t, they would have no inclination to meet onthe battlefield. Even if one didnt know from concrete examples (the 1936Olympic Games, for instance) that international sporting contests lead to orgiesof hatred, one could deduce it from general principles.Nearly all the sports practised nowadays are comp

28、etitive. You play to win,and the game has little meaning unless you do your utmost to win. On the villagegreen, where you pick up sides and no feeling of local patriotism is involved, itis possible to play simply for the fun and exercise: but as soon as the question ofprestige arises, as soon as you

29、 feel that you and some larger unit will be disgracedif you lose, the most savage combative instincts are aroused. Anyone whohas played even in a school football match knows this. At the international levelsport is frankly mimic warfare. But the significant thing is not the behaviour ofthe players b

30、ut the attitude of the spectators: and, behind the spectators, of thenations. who work themselves into furies over these absurd contests, and seriouslybelieve-at any rate for short periods-that running, jumping and kicking a ballare tests of national virtue.刘晓华 liuxiaohua728Lesson 7 BatsNot all soun

31、ds made by animals serve as language, and we have only to turn tothat extraordinary discovery of echo-location in bats to see a case in which thevoice plays a strictly utilitarian role.To get a full appreciation of what this means we must turn first to some recenthuman inventions. Everyone knows tha

32、t if he shouts in the vicinity of a wall ora mountainside, an echo will come back. The further off this solid obstructionthe longer time will elapse for the return of the echo. A sound made by tappingon the hull of a ship will be reflected from the sea bottom, and by measuring thetime interval betwe

33、en the taps and the receipt of the echoes the depth of thesea at that point can be calculated. So was born the echo-sounding apparatus,now in general use in ships. Every solid object will reflect a sound, varying accordingto the size and nature of the object. A shoal of fish will do this. So it is a

34、comparatively simple step from locating the sea bottom to locating a shoal offish. With experience, and with improved apparatus, it is now possible not onlyto locate a shoal but to tell if it is herring, cod, or other well-known fish, by thepattern of its echo.A few years ago it was found that certa

35、in bats emit squeaks and by receivingthe echoes they could locate and steer clear of obstacles-or locate flying insectson which they feed. This echo-location in bats is often compared with radar, theprinciple of which is similar.刘晓华 liuxiaohua729*Lesson 8 Trading standardsChickens slaughtered in the

36、 United States, claim officials in Brussels, are not fit to grace European tables. No,say the Americans: our fowl are fine, we simply clean them in a different way. These days, it is differences innational regulations, far more than tariffs, that put sand in the wheels of trade between rich countrie

37、s. It is notjust farmers who are complaining . An electric razor that meets the European Unions safety standards must beapproved by American testers before it can be sold in the United States, and an American-made dialysis machineneeds the EUs okay before it hits the market in Europe.As it happens,

38、a razor that is safe in Europe is unlikely to electrocute Americans. So, ask businesses on bothsides of the Atlantic, why have two lots of tests where one would do? Politicians agree, in principle, so Americaand the EU have been trying to reach a deal which would eliminate the need to double-test ma

39、ny products. Theyhope to finish in time for a trade summit between America and EU on May 28th. Although negotiators areoptimistic, the details are complex enough that they may be hard-pressed to get a deal at all.Why? One difficulty is to construct the agreements. The Americans would happily reach o

40、ne accord onstandards for medical devices and then hammer out different pacts covering, say, electronic goods and drugmanufacturing. The EU-following fine continental traditionswants agreement on general principles, whichcould be applied to many types of products and have extended to other countries

41、.刘晓华 liuxiaohua7210Lesson 9 Royal espionageAlfred the Great acted as his own spy, visiting Danish camps disguised as aminstrel. In those days wandering minstrels were welcome everywhere. Theywere not fighting men, and their harp was their passport. Alfred had learnedmany of their ballads in his yout

42、h, and could vary his programme with acrobatictricks and simple conjuring.While Alfreds little army slowly began to gather at Athelney, the king himselfset out to penetrate the camp of Guthrum, the commander of the Danish invaders.These had settled down for the winter at Chippenham: thither Alfredwe

43、nt. He noticed at once that discipline was slack: the Danes had the selfconfidenceof conquerors, and their security precautions were casual. They livedwell, on the proceeds of raids on neighbouring regions. There they collectedwomen as well as food and drink, and a life of ease had made them soft.Al

44、fred stayed in the camp a week before he returned to Athelney. The forcethere assembled was trivial compared with the Danish horde. But Alfred haddeduced that the Danes were no longer fit for prolonged battle : and that theircommissariat had no organization, but depended on irregular raids.So, faced

45、 with the Danish advance, Alfred did not risk open battle but harriedthe enemy. He was constantly on the move, drawing the Danes after him. Hispatrols halted the raiding parties: hunger assailed the Danish army. Now Alfredbegan a long series of skirmishes-and within a month the Danes had surrendered

46、.The episode could reasonably serve as a unique epic of royal espionage!刘晓华 liuxiaohua7211*Lesson 10 Silicon valleyTechnology trends may push Silicon Valley back to the future. Carver Mead, a pioneer in integrated circuitsand a professor of computer science at the California Institute of Technology,

47、 notes there are now workstationsthat enable engineers to design, test and produce chips right on their desks, much the way an editor creates anewsletter on a Macintosh. As the time and cost of making a chip drip to a few days and a few hundred dollars,engineers may soon be free to let their imagina

48、tions soar without being penalized by expensive failures. Meadpredicts that inventors will be able to perfect powerful customized chips over a weekend at theofficespawning a new generation of garage start-ups and giving the U.S. a jump on its foreign rivals ingetting new products to market fast. Weve got more garages with smart people, Mead observes. We reallythrive on anarchy.And on Asians. Already, orientals and Asian Americans constitute the majority of the engineering staffs atmany Valley firms. And Chinese, Korean, Filipino and Indian engineers are gradua