听力原文：Modern means of communication are so rapid that a buyer can discover what price a

al activities throughout the country. The performing arts are well established, with professional and amateur companies active in music, drama and dance. New Zealand writing, painting, pottery and weaving have achieved growing international recognition in recent years. Filmmaking has also become an important industry over the past 20 years. The educational system strongly encourages music, drama and visual arts at all levels.

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port in the United States will appear in the Newark municipal court on the morning of Jan. 28, a court official told China Daily on Tuesday.

Jiang Haisong, 28, was arrested last Friday evening by US port authorities and released after hours of questioning. Jiang ducked a security barrier in the airport's terminal C on Jan. 3 to bid farewell to his girlfriend after a Transportation Security Administration (TSA) guard stepped away from his post momentarily.

The three terminals at the airport were subsequently shut down for six hours after a bystander who witnessed the incidence notified TSA officials. The shutdown reportedly caused numerous flights delays in and out of Newark, stranding thousands of passengers.

Jiang, a molecular biosciences student who is set to graduate in May, had contacted the Chinese consulate in New York on Monday by phone, said Wang Bangfu, the consul for overseas Chinese affairs at the consulate. Wang told China Daily on Tuesday that the consulate is providing consular protection and assistance to Jiang after identifying him as a Chinese national. These include providing a list of lawyers, which Jiang is selecting for his case. Wang would not reveal more details because Jiang had requested for the content of their conversation to be kept private. But Wang said the consulate has been keeping a close eye on the development. Wang did not comment further on the case until final investigation results were out, implying that the consulate will work to ensure Jiang gets a fair trial and his legal rights are fully protected.

Under the charge of defiant trespassing brought by the Port Authority of New York and New Jersey, Jiang faces a 30-day imprisonment and a fine of $ 500. But New Jersey Senator Frank Lautenberg had earlier pushed for harsh punishment, threatening to lobby for severe federal criminal charges instead of a misdemeanor. Lautenberg also earlier mentioned visa revocation and deportation, but has since toned down his comments on the case in the last few days.

The incidence has triggered strong reaction among people both in the US and China. A number of these have accused Jiang of a "stupid" blunder. Others have hailed him as a kind of hero for exposing a glaring airport security loophole. While more people on the Chinese mainland expressed their disappointment at Jiang for bringing disgrace to the Chinese community, his American neighbors and fellow colleagues at Rutgers University showed more understanding and described him in much nicer words.

Give a brief summary of what has happened in the Newark Liberty International Airport.

ayoff could be bright". ( Para. 8)

e powered by batteries or solar panels.

While trekking in Nepal in 1997, Dave Irvine-Halliday was struck by the plight of rural villagers having to rely on smelly, dim and dangerous kerosene lanterns to light their homes. Hoping to make a difference, Dr Irvine-Halliday, a professor of electrical engineering at the University of Calgary in Canada, founded the Light Up The World Foundation, The non-profit organisation has since helped to distribute low-power, white light-emitting diodes (LEDs), at low cost or free, to thousands of people around the globe.

About 1.6 billion people worldwide are without access to electricity and have to rely on fuel- based sources for lighting. But burning fuel is not only extremely expensive—$40 billion is spent on off-the-grid lighting in developing countries a year—it is also highly inefficient and contributes to indoor air pollution and the emission of greenhouse gases. If people switched from using fuel-based lamps to solar-powered LEDs, carbon-dioxide emissions could be reduced by up to 190m tonnes per year, reckons Evan Mills, a staff scientist at America's Lawrence Berkeley National Laboratory. That is equivalent to one-third of Britain's annual carbon-dioxide emissions.

LEDs are an ideal off-the-grid light source because they need so little power. They can be run on AA batteries, or batteries recharged using small solar arrays. Compared with kerosene lanterns, LEDs can deliver up to 100 times more useful light to a task, besides being extremely long-lasting. All this adds up to a life-changing impact for the lamps' owners, ranging from increased work productivity, more time to study at night and reduced health problems and fire hazards.

Several firms are getting ready to tap into this underserved market. Cosmos Ignite Innovations, a spin-out from Stanford University that is now based in New Delhi, India, has developed the MightyLight, a solar-powered LED-based lamp that is waterproof, portable and runs for up to 12 hours. So far, Cosmos has sold nearly 5,000 of its $50 lamps to various charities.

Another company, Better Energy Systems of Berkeley, California, is testing LED add-ons that might work well with its Solio, a portable solar array that can also be used to charge mobile phones and other devices.

The International Finance Corporation (IFC), the private-sector investment arm of the World Bank, recently secured $ 5.4m in financing for "Lighting the Bottom of the Pyramid", a four-year initiative that will engage lighting manufacturers with pilot projects in Kenya and Ghana.

One task is to make LEDs affordable, says Dr Mills, who is a consultant on the IFC project. Households in rural Kenya, for example, spend an average of $7 a month on kerosene for lighting. Although the cost of a solar-powered LED lamp over its lifetime is much less than the cumulative cost of fuel, many people cannot afford the initial $25 to $50 outlay for such a lamp. If that hitch could be ironed out—via microfinance, perhaps—the payoff could be bright.

What are LEDs? Why are they an ideal light source?

夺大力神杯而杀得昏天黑地。

世界杯会如何影响世界经济?各国球迷们享用四年一度的足球大餐时，可能无暇考虑这等严肃的问题，但冷静的经济学家们却已经研究出了新成果。像奥运会一样，世界杯作为一种商业赛事，对东道主而言，意味着财源滚滚的“金鸡”。有专家预测，今年世界杯，德国将至少获得 200亿美元的直接经济效益。所以，荷兰Hypercube咨询公司干脆提议，国际足联将目前四年一度的世界杯赛的频率加快一倍，变成两年一度的赛事。

ly ill. An ambulance was called, but its route was blocked by a pile of clothes and a gaggle of drunk, naked young men. They were members of a drinking society (roughly analogous to American fraternities). The boozy nudity at precisely this spot, they explained, refusing to budge, was an awfully important initiation rite.

This incident came to mind last month when something not dissimilar happened near Wigan, in northern England. A group of youths obstructed an ambulance and harassed the paramedics in it, whose patient died. That little act of thuggery was scarcely noticed amid the ongoing run of murders by British youngsters, by knife and sometimes gun. Most of the victims have been young too: 18 people aged 18 or under have been killed in London this year, stabbed on the street or shot in nightclubs—not many by Los Angeles standards, perhaps, but troubling by Britain's. Not all the victims have been teenagers, a father in Warrington was beaten to death outside his home last week after remonstrating with vandals. "No street is safe any more from marauding hooligans," lamented the Sun, which recently fulminated about the yobs who urinated in drinking-water supplies delivered to flood-stricken western England.

Are British delinquents really more depraved, and more numerous, than they used to be, or than other countries' are? That university prank—as well as confirming that the posh and plebeian classes can be oddly alike—suggests that there is little new under the sun, even if the Sun says there is. Hysteria over degenerate children was even more intense in 1993, when two ten-year-olds murdered a toddler in Liverpool. From punks and skinheads, through the gangs that prowled the post-war London rubble and beyond, "yoof" has always been a concern, and always getting worse. "I would there were no age between sixteen and three-and-twenty," says a Shakespearean character, "for there is nothing in the between but getting wenches with child, wronging the ancientry, stealing, fighting." It is true that more teenage British wenches are got with child than other European ones, and that British teenagers are unusually prone to taking drugs, fighting, venereal disease and boozing: a senior policeman called this week for tighter rules on alcohol. But few who drink or smoke pot graduate to knife crime. Many do none of these things; most are better-off and better-educated than ever.

Not much has changed—and don't generalise: those are the relaxed arguments of some sociologists, criminologists and other yoof-ologists. But an old problem still counts as a problem: that Britons have always worried about yoof doesn't mean they are wrong to do so now. And conversations with teachers, youth workers and yoof itself suggest that in some ways the plight and behaviour of teenagers have indeed deteriorated.

Hard evidence is difficult to come by, but more British teenagers seem to be carrying knives, intended to protect but liable to endanger. More assaults than previously seem to be provoked by imagined "disrespect"; afterwards, a teenage omerta often confounds the police. Murder is still overwhelmingly a male offence, but girls seem to be committing more violent crime too. Urban gangs are pursuing rivalries and vendettas against groups from other neighbourhoods, separated by boundaries that are invisible to oblivious adults. "Happy-slapping", whereby assailants film their attacks for their later amusement, has been an unanticipated consequence of putting cameras on mobile phones.

As in America, the worst problems are often concentrated in specific communities. But they have wider costs, because adults can't tell the sociopaths from the bored loiterers. British adults, research suggests, are less likely to intervene than other Europeans if they see youngsters up to no good, with the result that parks and squares are