Mostofthe33newlydiscoveredplanets'giantg
Itsoundslikeasciencefiction,butresearche
It sounds like a science fiction, but researchers say it’s a scientific fact: Microscopic organisms dubbed "killer algae" are paralyzing fish with unknown toxins and then eating away at their flesh. {{U}}They{{/U}} might be making people sick, too. The name given to this single-cell organism, or dinoflagellate, is Pfiesteria piscimorte—{{U}}literally{{/U}}, "fish killer." It was discovered at NorthCarolina State University in 1988, but at the same time, few scientists believed in its existence, much less in its highly unusual predatory nature.But ongoing research has led to international acknowledgment of the phenomenon and, recently, research funding. Seemingly {{U}}prompted{{/U}} by an unknown substance secreted by fish, the aggressive creature swims into action. It sends neurotoxins into the water and air, paralyzing a fish’s nervous system, and causing it to gasp for air at the surface.Eventually the fish suffocates. The killer dinoflagellate then attaches itself to the fish and begins sucking away at its flesh. This macabre scenario may help solve several sea mysteries, such as why fishermen report seeing "fish walks" (fish trying to leave the water) and pools of dead fish with holes eaten through them. Whether humans are affected by the dinoflagellate’s toxin remains to be seen. Researchers think it’s unlikely eating fresh fish are in danger, but anyone with frequent exposure to the creature could be in peril. Several researchers working with the algae have reported bouts of memory loss and disorientation. To understand the killer algae further, scientists must fully characterize their toxin and determine what stimulates them to attack. They also need to know if the algae are hurting fish populations, and whether pollutants make them more likely to attack. |
Questions21-25Appleishardlyaloneinthehig
Questions 21-25 Apple is hardly alone in the high-tech industry when it comes to duff gadgets and unhelpful call centers, but in other respects it is highly unusual. In particular, it inspires an almost religious fervor among its customers. That is no doubt helped by the fact that its corporate biography is so closely bound up with the mercurial Mr. Jobs, a rare showman in his industry. Yet for all its flaws and quirks,Apple has at least four important wider lessons to teach other companies. The first is that innovation can come from without as well as within.Apple is widely assumed to be an innovator in the tradition of ThomasEdison orBell Laboratories, locking its engineers away to cook up new ideas and basing products on their moments of inspiration. In fact, its real skill lies in stitching together its own ideas with technologies from outside and then wrapping the results in elegant software and stylish design. The idea for the iPod, for example, was originally dreamt up by a consultant whomApple hired to run the project. It was assembled by combining off-the-shelf parts with in-house ingredients such as its distinctive, easily used system of controls.And it was designed to work closely withApple’s iTunes jukebox software, which was also bought in and then overhauled and improveD、Apple is, in short, an orchestrator and integrator of technologies, unafraid to bring in ideas from outside but always adding its own twists. This approach, known as "network innovation", is not limited to electronics. It has also been embraced by companies such as Procter & Gamble,BT and several drugs giants, all of which have realized the power of admitting that not all good ideas start at home. Making network innovation work involves cultivating contacts with start-ups and academic researchers, constantly scouting for new ideas and ensuring that engineers do not fall prey to "not invented here" syndrome, which always values in-house ideas over those from outside. Second,Apple illustrates the importance of designing new products around the needs of the user, not the demands of the technology. Too many technology firms think that clever innards are enough to sell their products, resulting in gizmos designed by engineers for engineers.Apple has consistently combined clever technology with simplicity and ease of use. The iPod was not the first digital-music player, but it was the first to make transferring and organizing music, and buying it online, easy enough for almost anyone to have a go. Similarly, the iPhone is not the first mobile phone to incorporate a music-player, web browser or e-mail software.But most existing "smartphones" require you to be pretty smart to use them. Apple is not alone in its pursuit of simplicity. Philips, aDutch electronics giant, is trying a similar approach. Niklas Zennstrom and Janus Friis, perhaps the most Jobsian ofEurope’s geeks, took an existing but fiddly technology, internet telephony, to a mass audience by making it simple, with Skype; they hope to do the same for internet television.But too few technology firms see "ease of use" as an end in itself. |
Thisisofferedasatextbookillustrationofth
This is offered as a textbook illustration of the principle that voters are far shrewder than most politicians believe. This case study highlighting Washington’s inability to fool anyone is based on a recent survey of the attitudes of people on Medicare about their new prescription-drug benefit. Last fall, whenCongress added prescription-drug coverage to Medicare, the new law was hailed as a political masterpiece.CongressionalDemocrats, who overwhelmingly opposed the bill, thundered that they, too, were eager to provide a drug benefit under Medicare, but they championed alternative legislation that offered a larger drug subsidy and smaller incentives to health insurers to participate. Liberals such as Sen.Edward Kennedy were confident that the drug bill, with plenty of holes in its benefit formulas, would inevitably be expanded around the time it took effect. Not many inCongress seemed troubled that the federal budget was deep in deficit, the nation was saddled with future expenditures for the Iraq war and virtually no health care expert believed that the legislation would fit into its projected $400-billion-over- 10-years cost framework. The new law was a cynical bargain that had more to do with the 2004 election than a rational approach to the prescription-drug needs of the nation’s elderly. The prescription-drug legislation seems a compromise between competing ideologies inserted into a fixed congressional budget. Put another way, it was sausage-stuffing in the guise of lawmaking.And, what no one anticipated was the reaction of the elderly, a group that votes in disproportionate numbers. |
Thebiggestdangerfacingtheglobalairlinein
The biggest danger facing the global airline industry is not the effects of terrorism, war, SARS and economic downturn. It is that these blows, which have helped ground three national flag carriers and force twoAmerican airlines intoChapter 11 bankruptcy, will divert attention from the inherent weaknesses of aviation, which they have exacerbateD、As in the crisis that attended the first Gulf war, many airlines hope that traffic will soon bounce back, and a few catastrophic years will be followed by fuller planes, happier passengers and a return to profitability. Yet the industry’s problems are deeper—and older—than the trauma of the past two years implies. As the centenary of the first powered flight approaches inDecember, the industry it launched is still remarkably primitive. The car industry, created not long after the WrightBrothers made history, is now a global industry dominated by a dozen firms, at least half of which make good profits. Yet commercial aviation consists of 267 international carriers and another 500-plus domestic ones. The world’s biggest carrier,AmericanAirlines, has barely 7% of the global market, whereas the world’s biggest carmaker, General Motors, has (with its associated firms) about a quarter of the world’s automobile market. Aviation has been incompletely deregulated, and in only two markets:America andEurope.Everywhere else deals between governments dictate who flies under what rules. These aim to preserve state-owned national flag-carriers, run for prestige rather than profit.And numerous restrictions on foreign ownership impede cross-border airline mergers. InAmerica, the big network carders face barriers to exit, which have kept their route networks too large. Trade unions resisting job cuts andCongressmen opposing route closures in their territory conspire to block change. InEurope, liberalization is limited by bilateral deals that prevent, for instance,BritishAirwaysBA、flying toAmerica from Frankfurt or Paris, or Lufthansa offering transatlantic flights from London’s Heathrow. To use the car industry analogy, it is as if only Renaults were allowed to drive on French motorways. In airlines, the optimists are those who think that things are now so bad that the industry has no option but to evolve. Frederick Reid, president ofDeltaAir Lines. said earlier this year that events since the September llth attacks are the equivalent of a meteor strike, changing the climate, creating a sort of nuclear winter and leading to a "compressed evolutionary cycle". So how. looking on the bright side. might the industry look after five years of accelerated development |
Jamesdenouncedsorcery,adultery,______,in
Therecentconferenceontheeffectiveuseofth
The possibilities for ____ energy
"Yourealizethatyouweredrivingat100mph,do
DeclanMayes,PresidentoftheMusicBuyersAss
Declan Mayes, President of the MusicBuyersAssociation, is furious at a recent announcement by the recording industry regarding people downloading MP3 music files from the Internet as actual criminals. A、few parallels may be instructive. If someone copies an audio music cassette for their own private use, they are, strictly speaking, breaking the law.But recording companies have usually turned a blind eye to this practice because prosecuting the few people involved would be difficult, and the financial loss to the company itself is not considered significant. Now the Music RecordingAssociation has announced that it regards individuals downloading music from the Internet as pirates, claiming that they damage the industry in just the same way. "The industry is completely overreaching; it’ll be a laughing stock," says Mayes. "They’re going to arrest some teenager downloading files in his bedroom and sue him for thousands of dollars! This isn’t going to frighten anyone into buyingCDs". Mayes may have a point. There is a general consensus thatCD、pirates should be subjected to the full wrath of the law, but few would see an individual downloading music for his or her own pleasure in the same light. However, downloading music files illegally is not as innocuous as making private copies of audio cassettes. The scratchy, distorted cassette copy is a poor version of the original recording, whereas an MP3 file is of high quality and can be stored on aCD, for example. It is this that makes the practice a powerful temptation for music fans, given the high cost ofCDs. What does Mayes think about claims that music companies could be forced out of business by people downloading music illegally That’s nonsense. Music companies are always whining about high costs, but that doesn’t prevent them from recording hundreds ofCDs by completely unknown artists, many of whom are "packaged" by marketing departments to appeal to young consumers. The companies are simply hoping that one of these new bands or singers will be a hit, and although it can be expensive to promote new artists, the cost of manufacturing theCDs is actually very low. This last point would appear to be the focus of resentment against music companies, aCD、is far cheaper to produce than its price in the shops would indicate, and profit margins for the music companies are huge.An adult with a reasonable income may not object to paying £15 for aCD、of classical music, but a teenager buying aCD、by the latest pop sensation may find that price rather steep — especially since the latest pop sensation is almost certain to be forgotten within a few months.And while the recording industry can’t be held responsible for the evanescent nature of fame, given the teenage appetite for anything novel, it could lower the prices it charges — especially since technology is makingCDs even cheaper to produce. This is what Mayes hopes will happen. If the music industry stops exploiting the music-buying public, it can survive.Everyone would rather buy aCD, with an attractive jacket and booklet, than mess around downloading files, but the price has to be reasonable. The problem isn’t going to vanish if the industry carries on trying to make a quick profit. Technology has caught up with the music companies, and trying to fight it by taking people to court will only earn money for the lawyers. |
WhyhavetheAmericansdevelopedspaceshuttle
A.(A)Torrentialrainsandmudslidesledtohea
{{B}}Questions19-22{{/B}}A.(A)Toraisefun
{{B}}Questions 19-22{{/B}} |
Questions61-70arebasedonthefollowingpass
Afterthelightwasturnedoff,therathadtowai
Questions6~10CampaigningontheIndianfront
ThatMGMGrandYouthCenterisopentochildren3
Inthesecondhalfofeachyear,manypowerfulst
Lifeexpectancyintherichestcountriesofthe
Greatereffortstoincreaseagriculturalprod