新概念英语4课文.doc

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1、如有侵权，请联系网站删除，仅供学习与交流新概念英语4课文【精品文档】第 41 页 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

2、 that they can preserve their 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 wondere

3、d where the remote ancestors 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 fo

4、rgotten. So archaeologists 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 rot

5、ted away. Stone does not decay, 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 gr

6、eatest enemies of the humanrace. 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 to

7、gether kill only a fraction 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

8、 spider always has eight legsand 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

9、like 6,000,000 spiders of 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 tha

10、t the weight of all the insectsdestroyed 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 Listener4Lesson 3 Matterhorn manModern alpinists try to climb mountains by a route which will give them

11、goodsport, and the more difficult 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 tr

12、ue that during their explorations 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 ha

13、rd for us to realize nowadays 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 general

14、ly dirty and flea-ridden; 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), so

15、metimes with shepherds or 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 th

16、e Soviet Union several cases 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 part

17、s of her skin, and through 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 d

18、one up in bundles.Veras 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 w

19、as able to read a newspaper 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

20、picture hidden under a carpet. 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 th

21、ings with her fingers this 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

22、 young are after all human 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

23、was just young and uncertain-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 y

24、oung people exciting. They 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 we

25、re in some sense cosmic 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 rea

26、son for respect. Iaccept 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

27、 at football or cricket, 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 pract

28、ised nowadays are competitive. 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

29、arises, as soon as you 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 beh

30、aviour ofthe players but 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 liuxiaohua728Les

31、son 7 BatsNot all sounds 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 inventio

32、ns. Everyone knows that 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

33、thetime interval between 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 wi

34、ll do this. So it is acomparatively 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 i

35、t was found that certain 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 standardsChick

36、ens slaughtered in the 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

37、 between rich countries. 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

38、Europe.As it happens, 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

39、need to double-test many 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

40、 would happily reach one 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 exten

41、ded to other countries.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 the

42、ir ballads in his youth, 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 Chippe

43、nham: thither Alfredwent. 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

44、 had made them soft.Alfred 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 irr

45、egular raids.So, faced 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

46、 Danes had surrendered.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 In

47、stitute of Technology, 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 fre

48、e to let their imaginations 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