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第一篇Captain Cook Arrow Legend庫克船長(zhǎng)箭傳說 It was a great legend while it lasted，but DNA testing has (1) finally ended a two-century-old story of the Hawaiian arrow carved from the bone of British explorer Captain James Cook(2) who died in the Sandwich Islands’in 1779. “There is (3) no Cook in the Australian Museum，’’museum collection manager Jude Philip said not long ago in announcing the DNA evidence that the arrow was not made of Cook’S bone.But that will not stop the museum from continuing to display the arrow in its(4) exhibition ，“Uncovered：Treasures of the Australian Museum,” which(5) does include a feather cape presented to Cook by Hawaiian King Kalani’opu’u in 1778. Cook was one of Britain’s great explorers and is credited with(6) discovering the“Great South Land，"(7) now Australia, in 1 770.He was clubbed to death in the Sandwich Islands，now HawaiiThe 1egend of Cook’s arrow began in 1824 (8) when Hawaiian King Kamehameha on his deathbed gave the arrow to William Adams，a London surgeon and relative of Cook’s wife，saying it was made of Cook’s bone after the fatal(9) fight with islanders. In the 1890s the arrow was given to the Australian Museum and the legend continued (10) until it came face=to-face with science. DNA testing by laboratories in Australia and New Zealand revealed the arrow was not made of Cook’s bone but was more (11) likely made of animal bone。said Philp. However, Cook’s fans (12) refuse to give up hope that one Cook legend will prove true and that part of his remains will still be uncovered.as they say there is evidence not a11 of Cook’s body was (13) buried at sea in 1 779.“On this occasion technology has won"，”said Cliff Thornton，president of the Captain Cook Society, in a (14) statement from Britain.“But I am (15) surethat one of these days…one of the Cook legends will prove to be true and it will happen one day.’’ 第二篇 Avalanche and Its Safety 雪崩和它的安全 An avalanche is a sudden and rapid flow of snow, often mixed with air and water, down a mountainside. Avalanches are (1) among the biggest dangers in the mountains for both life and property. All avalanches are caused by an over-burden of material, typically snowpack, that is too massive and unstable for the slope (2) that supports it. Determining the critical load, the amount of over-burden which is (3)likely to cause an avalanche, (4) is a complex task involving the evaluation of a number of factors. Terrain slopes flatter than 25 degrees or steeper than 60 degrees typically have a low (5)risk of avalanche. Snow does not (6)gather significantly on steep slopes; also, snow does not (7)flow easily on flat slopes. Human-triggered avalanches have the greatest incidence when the snows angle of rest is (8)between 35 and 45 degrees; the critical angle, the angle at which the human incidence of avalanches is greatest, is 38 degrees. The rule of thumb is: A slope that is (9) flat enough to hold snow but steep enough to ski has the potential to generate an avalanche, regardless of the angle. Additionally, avalanche risk increases with (10) use ; that is, the more a slope is disturbed by skiers, the more likely it is that an avalanche will occur. Due to the complexity of the subject, winter travelling in the backcountry is never 100% safe. Good avalanche safety is a continuous (11) process , including route selection and examination of the snowpack, weather (12) conditions , and human factors. Several well-known good habits can also(13) reduce the risk. If local authorities issue avalanche risk reports, they should be considered and all warnings should be paid (14) attention to. Never follow in the tracks of others without your own evaluations; snow conditions are almost certain to have changed since they were made. Observe the terrain and note obvious avalanche paths where plants are （15）missing or damaged. Avoid traveling below others who might trigger an avalanche. ★第三篇Giant Structures巨型建筑 It is an impossible task to select the most amazing wonders of the modem world since every year more wonderful_constructions appear. Here are three giant structures which are worthy of our admiration although they may have been surpassed by some more recent wonders. The Petronas Twin Towers The Petronas Towers were the tallest buildings in the world when they were completed in 1999. With a height of 452 metres, the tall twin towers, like two thin pencils, dominate the city of Kuala Lumpur. At the 41st floor, the towers are linked by a bridge, symbolizing a gateway to the city. The American architect Cesar Pelli designed the skyscrapers. Constructed of high-strength concrete, the building provides around 1，800 square metres of office space on every floor. And it has a shopping centre and a concert hall at the base. Other features of this impressive building include double-decker lifts, and glass and steel sunshades. The MiUau Bridge The Millau Bridge was opened in 2004 in the Tam Valley，in southern France. at_the time it was built，it was the world’s highest bridge, reaching_ over 340m at the highest point. The bridge is described as one of the most amazingly beautiful bridges in the world. It was built to relieve Millaus congestion problems. The congestion was then caused by traffic passing from Paris to Barcelona in Spain. The bridge was built to withstand the most_ extreme seismic and climatic conditions. Besides, it is guaranteed for 120 years! The Itaipu Dam The Itaipu hydroelectric power plant is one of the largest constructions of its kind in the world. It consists of a series of dams across the River Parana, which forms a natural border between Brazil and Paraguay. Started in 1975 and taking 16 years to complete, the construction was carried out as a joint project between the two countries. The dam is well-known for both its electricity output and its size. In 1995 it produced 78% of Paraguay’s and 25% of Brazil’s energy needs. In its construction, the amount of iron and steel used was equivalent to over 300 Eiffel Towers. It is atruly_ amazing wonder of engineering. 第四篇 Animal’s “Sixth Sense” 動(dòng)物的 " 第六個(gè)感覺 A tsunami was triggered by an earthquake in the Indian Ocean in December, 2004. It killed tens of thousands of people in Asia and East Africa. Wild animals, （1）however, seem to have escaped that terrible tsunami. This phenomenon adds weight to notions that I they possess a “sixth sense” for （2）disasters, experts said. Sri Lankan wildlife officials have said the giant waves that killed over 24,000 people along the Indian Ocean island’s coast clearly （3）missed wild beasts, with no dead animals found. “No elephants are dead, not （4）even dead rabbit. I think animals can （5）sense disaster. They have a sixth sense. They know when things are happening.” H.D. Ratnayake, deputy director of Sri Lanka’s Wildlife Department, said about one month after the tsunami attack. The （6）waves washed floodwaters up to 2 miles inland at Yala National Park in the ravaged southeast, Sri Lanka’s biggest wildlife （7）reserve and home to hundreds of wild elephants and several leopards. “There has been a lot of （8）apparent evidence about dogs barking or birds migrating before volcanic eruptions or earthquakes. But it has not been proven,” said Matthew van Lierop an animal behavior（9）specialist at Johannesburg Zoo. “There have been no （10）specific studies because you can’t really test it in a lab or field setting2,” he told Reuters. Other authorities concurred with this （11）assessment. “Wildlife seem to be able to pick up certain （12）phenomenon, especially birds… there are many reports of birds detecting impending disasters,” said Clive Walker, who has written several books on African wildlife. Animals （13）certainly rely on the known senses such as smell or hearing to avoid danger such as predators. The notion of an animal “sixth sense”-or （14）some other mythical power-is an enduring one3 which the evidence on Sri Lanka’s ravaged coast is likely to add to. The Romans saw owls （15）as omens of impending disaster and many ancient cultures viewed elephants as sacred animals endowed with special powers or attributes. 第五篇 Singing Alarms Could Save the Blind 歌唱警報(bào)可以解救盲人 If you cannot see, you may not be able to find your way out of a burning building ---- and that could be fatal. A company in Leeds could change all that （1）with directional sound alarms capable if guiding you to the exit. Sound Alert, a company （2）run by the University of Leeds, is installing the alarms in a residential home for （3）blind people in Sommerset and a resource centre for the blind in Cumbria.（4）The alarms produce a wide range of frequencies that enable the brain to determine where the （5）sound is coming from. Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be （6）heard by humans. “It’s a burst of white noise （7）that people say sounds like static on the radio,”she says. “Its life-saving potential is great.” She conducted an experiment in which people were filmed by thermal—imaging cameras trying to find their way out of a large （8）smoke-filled room. It （9）took them nearly four minutes to find the door （10）without a sound alarm, but only 15 seconds with one. Withington studies how the brain （11）processes sounds at the university. She says that the （12）source of a wide band of frequencies can be pinpointed more easily than the source of a narrow band. Alarms （13）based on the same concept have already been installed on emergency vehicles. The alarms will also include rising or falling frequencies to indicate whether people should go up （14）or down stairs. They were（15）developed with the aid of a large grant from British Nuclear Fuels. 第六篇 Car Thieves could Be Stopped Remotely 汽車小偷可能很遠(yuǎn)地被停止 Speeding off in a stolen car, the thief thinks he has got a great catch. But he is in a nasty surprise. The car is fitted with a remote immobilizer and a radio signal from a control center miles away will ensure that once the thief switches the engine 1 off , he will not be able to start it again. For now, such devices 2 are only available for fleets of trucks and specialist vehicles used on construction sites. But remote immobilization technology could soon start to trickle down to ordinary cars, and 3 should be available to ordinary cars in the UK 4 in two months. The idea goes like this. A control box fitted to the carincorporates 5 a miniature cellphone, a microprocessor and memory, and a GPS satellite positioning receiver. 6 If the car is stolen, a coded cellphone signal will tell the unit to block the vehicle’s engine management system and prevent the engine 7 being restarted. There are even plans for immobilizers 8 that shut down vehicles on the move, though there are fears over the safety implications of such a system. In the UK. an array of technical fixes is already making 9 life harder for car thieves. “The pattern of vehicles crime has changed,” says Martyn Randall of Thatcham, a security research organization based in Berkshire that is funded in part 10 by the motor insurance industry. He says it would only take him a few minutes to 11 teach a novice how to steal a car, using a bare minimum of tools. But only if the car is more than 10 years old. Modern cars are a far tougher proposition, as their engine management computer will not 12 allow them to start unless they receive a unique ID code beamed out by the ignition key. In the UK, technologies like this 13 have helped achieve a 31 per cent drop in vehicle-related crime since 1997. But determined criminals are still managing to find other ways to steal cars. Often by getting hold of the owner’s keys in a burglary. In 2000, 12 per cent of vehicles stolen in the UK were taken using the owner’s keys double the previous year’s figure. Remote-controlled immobilization system would 14 put a major new obstacle in the criminal’s way by making such thefts pointless. A group that includes Thatcham, the police, insurance companies and security technology firms have developed standards for a system that could goon the market sooner than the 15 customer expects. 第七篇 An intelligent car一輛聰明的汽車 Driving needs sharp eyes, keen ears, quick brain, and coordination between hands and the brain. Many human drivers have all (1) these and can control a fast-moving car. But how does an intelligent car control itself? There is a virtual driver in the smart car. This virtual driver has “eyes,”“brains”，“hands” and “feet”，too. The mini-cameras (2) on each side of the car are his “eyes,” which observe the road and conditions ahead of it. They watch the (3) traffic to the car’s left and right. There is also a highly (4) automatic driving system in the car. It is the built-in computer, which is the virtual driver’s “brain. ” His “brain” calculates the speeds of (5) other moving cars near it and analyzes their positions. Basing on this information, it chooses the right (6) path for the intelligent cars, and gives (7) instructions to the “hands”and “feets”to act accordingly. In this way, the virtual driver controls his car. What is the virtual driver’s best advantage? He reacts (8) quickly. The mini-cameras are (9) sending images continuously to the “brain”. It (10) completes the processing of the images within 100 milliseconds. However, the world’s best drier (11) at least needs one second to react. (12) Besides, when he takes action, he needs one more second. The virtual driver is really wonderful. He can reduce the accident (13) rate considerably on expressway. In this case. Can we let him have the wheel at any time and in any place? Experts (14) warn that we cannot do that just yet. His ability to recognize things is still (15) limited. He can now only drive an intelligent car on expressways. 第八篇 Why India Needs Its Dying Vultures 印度為什么需要瀕臨滅亡的禿鷹 The vultures in question may look ugly and threatening, but the sudden sharp decline in three species of India’s vultures is producing alarm rather than celebration, and it presents the world with a new kind of environmental problem The dramatic decline in vulture numbers is causing widespread disruption to people living in the same areas as the _birds . It is also causing serious public health problems across the Indian sub-continent. While their reputation and appearance may be unpleasant to many Indians，vultures have long played a very important role in keeping towns and villages all over India clean. It is because they feed on dead cows. In India, cows are sacred animals and are traditionally left in the open when they die in their thousands upon thousands every year. The disappearance of the vultures has led to an explosion in the numbers of wild dogs feeding on the remains of these dead animals. There are fears that rabies may increase_ as a result. And this terrifying disease may ultimately affect humans in the region, since wild dogs are its main carriers. Rabies could also spread to other animal species, causing an even greater problem in the future _. The need for action is urgent, so an emergency project has been launched to find_ a solution to this serious vulture problem. Scientists are trying to identify the disease causing the birds，deaths and, if possible, develop a cure. Large-scale vulture deaths were first noticed at the end of the 1980s in India. A population survey at that time showed that the three species of vultures had declined by over 90 per cent. All three species are now listed as “critically endangered”. As most vultures lay only single eggs and take about five years to reach maturity, reversing their population decline will be a long and difficult exercise. 第九篇Wonder Webs驚奇網(wǎng)絡(luò) Spider webs are more than homes, and they are ingenious traps. And the world’s best web spinner may be the Golden Orb Weaver spider. The female Orb Weaver spins a web of fibers thin enough to be invisible to insect prey, yet (1)tough enough to snare a flying bird without breaking. The secret of the web’s strength? A type of super-resilient (2)silk called dragline. When the female spider is ready to (3)weave the web’s spokes and frame, she uses her legs to draw the airy thread out through a hollow nozzle in her belly. Dragline is not sticky, so the spider can race back and forth along (4)it to spin the web’s trademark spiral. Unlike some spiders that weave a new web every day, a Golden Orb Weaver (5)reuses her handiwork until it falls apart, sometimes not for two years. The silky thread is five times stronger than steel by weight and absorbs the force of an impact three times better than Kevlar, a high-strength human-made (6)material used in bullet-proof vests. And thanks to its high tensile strength, or the ability to resist breaking under the pulling force called tension, a single strand can stretch up to 40 percent longer than its original (7)length and snap back as well as new. No human-made fiber even comes (8)close . It is no (9)wonder manufacturers are clamoring for spider silk. In the consumer pipeline: High-performance fabrics for athletes and stockings that never run. Think parachute cords and suspension bridge cables. A steady (10)supply of spider silk would be worth billions of dollars – but how to produce it? Harvesting silk on spider farms does not (11)work because the territorial arthropods have a tendency to devour their neighbors. Now, scientists at the biotechnology company Nexia are spinning artificial silk modeled after Golden Orb dragline. The (12)first step: extract silk-making genes from the spiders. Next, implant the genes into goat egg cells. The nanny goats that grow from the eggs secrete dragline silk proteins in their (13)milk . “The young goats pass on the silk-making gene without (14)any help from us,” says Nexia president Jeffrey Turner. Nexia is still perfecting the spinning process, but they hope artificial spider silk will soon be snagging customers (15)as fast as the real thing snags bugs. 第十篇 Chicken Soup for the Soul心靈雞湯 Chicken Soup for the Soul：Comfort Food Fights Loneliness Mashed potatoes, macaroni and cheese, may be bad for your arteries．butaccording to a study in Psychological Science, they’re good for your heart and emotions ．The study focuses on “comfort food” and how it makes people feel． "For me personally ,food has always played a big role in my family,” says Jordan Troisi, a graduate student at the University of Buffalo, and lead author on the study．The study came out of the research program of his co—author Shira Gabriel．It has looked at non-human things that may affect human emotions．Some people reduce loneliness by bonding with their favorite TV show, building virtual relationships with a pop song singer or looking at pictures of loved ones．Troisi and Gabriel wondered if comfort food could have the same effect by making people think of their nearest and dearest. In one experiment, in order to make participants feel lonely, the researchers had them write for six minutes about a fight with someone close to them．Others were given an emotionally neutral writing assignment. Then, some people in each group wrote about the experience of eating a comfort food and others wrote about eating a new food． Finally ,the researchers had participants complete questions about their levels of loneliness． Writing about a fight with a close person made people feel lonely．But people who were generally secure in their relationships would feel less lonely by writing about a comfort food．"We have found that comfort foods are consistently associated with those close to us．"says Troisi．"Thinking about or consuming these foods later then serves as a reminder of those close others．"In their essays on comfort food, many people wrote about the experience of eating food with family and friends. In another experiment, eating chicken soup in the lab made people think more about relationships, but only if they considered chicken soup to be a comfort food．This was a question they had b