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Unpopular Subjects Is there a place in today’s society for the study of useless subjects in our universities Just over 100 years ago Fitzgerald argued in a well-written letter 1 Nature that "Universities must be allowed to study useless subjects— 2 they don’t, who will He went on to use the 3 of Maxwell’s electrodynamics (电动力学) as one case where a "useless subject" has been transformed to a useful subject. Nowadays this argument is again very much 4 in many universities. Indeed one suspects that it is one of those arguments that must be 5 anew (重新) by each generation. But now there is an added twist subjects must not only be useful, they must also be 6 enough that students will flock (蜂拥) to do them, and even flock to pay to do them. As universities become commercial operations, the pressure to 7 subjects or departments that are less popular will become stronger and stronger. Perhaps this is most strongly 8 at the moment by physics. There has been much 9 in the press of universities that are closing down physics departments and incorporate them with mathematics or engineering departments. Many scientists think otherwise. They see physics as a 10 science, which must be kept alive if only to 11 a base for other sciences and engineering. It is of their great personal concern that physics teaching and research is under 12 in many universities. How Can it be preserved in the rush towards commercial competition A major turnaround (转变) in student popularity may have to 13 until the industrial world discovers that it needs physicists and starts paying them well. Physics is now not only unpopular; it is also "hard". We can do more about the latter by 14 teaching in our schools and universities. We can also 15 cooperative arrangements to ensure that physicists keep their research and teaching up to date.
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Unpopular Subjects Is there a place in today’s society for the study of useless subjects in our universities Just over 100 years ago Fitzgerald argued in a well-written letter 1 Nature that "Universities must be allowed to study useless subjects— 2 they don’t, who will He went on to use the 3 of Maxwell’s electrodynamics (电动力学) as one case where a "useless subject" has been transformed to a useful subject. Nowadays this argument is again very much 4 in many universities. Indeed one suspects that it is one of those arguments that must be 5 anew (重新) by each generation. But now there is an added twist subjects must not only be useful, they must also be 6 enough that students will flock (蜂拥) to do them, and even flock to pay to do them. As universities become commercial operations, the pressure to 7 subjects or departments that are less popular will become stronger and stronger. Perhaps this is most strongly 8 at the moment by physics. There has been much 9 in the press of universities that are closing down physics departments and incorporate them with mathematics or engineering departments. Many scientists think otherwise. They see physics as a 10 science, which must be kept alive if only to 11 a base for other sciences and engineering. It is of their great personal concern that physics teaching and research is under 12 in many universities. How Can it be preserved in the rush towards commercial competition A major turnaround (转变) in student popularity may have to 13 until the industrial world discovers that it needs physicists and starts paying them well. Physics is now not only unpopular; it is also "hard". We can do more about the latter by 14 teaching in our schools and universities. We can also 15 cooperative arrangements to ensure that physicists keep their research and teaching up to date.
Batteries Built by Viruses What do chicken pox, the common cold, the flu, and AIDS have in common They’re all disease caused by viruses, tiny microorganisms that can pass from person to person. It’s no wonder that when most people think about viruses, finding ways to steer clear of viruses is what’s on people’s minds. Not everyone runs from the tiny disease carriers, though. In Cambridge, Massachusetts, scientists have discovered that some viruses can be helpful in an unusual way. They are putting viruses to work, teaching them to build some of the world’s smallest rechargeable batteries. Viruses and batteries may seem like an unusual pair, but they’re not so strange for engineer Angela Belcher, who first came up with the idea. At the Massachusetts Institute of Technology (MIT) in Cambridge, she and her collaborators bring together different areas of science in new ways. In the case of the virus-built batteries, the scientists combine what they know about biology, technology and production techniques. Belcher’s team includes Paula Hammond, who helps put together the tiny batteries, and Yet-Ming Chiang, an expert on how to store energy in the form of a battery. "We’re working on things we traditionally don’t associate with nature," says Hammond. Many batteries are already pretty small. You can hold A, C and D batteries in your hand. The coin-like batteries that power watches are often smaller than a penny. However, every year, new electronic devices like personal music players or ceil phones get smaller than the year before. As these devices shrink, ordinary batteries won’t be small enough to fit inside. The ideal battery will store a lot of energy in a small package. Right now, Belcher’s model battery, a metallic disk completely built by viruses, looks like a regular watch battery. But inside, its components are very small—so tiny you can only see them with a powerful microscope. How small are these battery parts To get some ideas of the size, pluck one hair from your head. Place your hair on a piece of white paper and try to see how wide your hair is—pretty thin, right Although the width of each person’s hair is a bit different, you could probably fit about 10 of these virus-built battery parts, side to side, across one hair. These microbatteries may change the way we look at viruses. Which of the following is true of Belcher’s battery mentioned in paragraph 6
Crystal Ear One day a friend asked my wife Jill if I wanted a hearing aid "He certainly does." replied Jill. After hearing about a remarkable new product, Jill finally got up the nerve to ask me if I’d ever thought about getting a hearing aid. "No way," I said. "It would make me look 20 years older." "No, no," she replied. "This is entirely different. It’s Crystal Ear!" Jill was right. Crystal Ear is different—not the old-styled body worn or over-the-ear aid, but all advanced personal sound system so small that it’s like contacts (隐形眼镜) for your ears. And Crystal Ear is super-sensitive and powerful, too. You will hear sounds your ears have been missing for years. Crystal Ear will make speech louder, and the sound is pure add natural. I couldn’t believe how tiny it is. It is smaller than the tip of my little finger and it’s almost invisible when worn. There are no wires, no behind-the-ear device. Put it in your ear and its ready-to-wear mold(形状) fits comfortably. Since it’s not too loud or too tight, you may even forget that you’re wearing it! Use it at work or at play. And if your hearing problem is worse in certain situations, use Crystal Ear only when you need it. Hearing loss, which occurs typically prior to teenage years, progresses throughout one’s lifetime. Although hearing loss is now the world’s number one health problem, nearly 90 percent of people suffering hearing loss choose to leave the problem untreated. For many millions, treating hearing loss in a conventional way can involve numerous office visits, expensive testing and adjustments to fit your ear. Thanks to Crystal Ear, the "sound solution" is now convenient. Almost 90 percent of people with mild hearing loss, and millions more with just a little hearing drop-off (下降), can be dramatically helped with Crystal Ear. More over, its superior design is energy-efficient, so batteries can last months. Crystal Ear is now available to help these people treat their hearing loss with a small hearing amplifier (放大器). According to the passage, hearing loss is ______.
Unpopular Subjects Is there a place in today’s society for the study of useless subjects in our universities Just over 100 years ago Fitzgerald argued in a well-written letter 1 Nature that "Universities must be allowed to study useless subjects— 2 they don’t, who will He went on to use the 3 of Maxwell’s electrodynamics (电动力学) as one case where a "useless subject" has been transformed to a useful subject. Nowadays this argument is again very much 4 in many universities. Indeed one suspects that it is one of those arguments that must be 5 anew (重新) by each generation. But now there is an added twist subjects must not only be useful, they must also be 6 enough that students will flock (蜂拥) to do them, and even flock to pay to do them. As universities become commercial operations, the pressure to 7 subjects or departments that are less popular will become stronger and stronger. Perhaps this is most strongly 8 at the moment by physics. There has been much 9 in the press of universities that are closing down physics departments and incorporate them with mathematics or engineering departments. Many scientists think otherwise. They see physics as a 10 science, which must be kept alive if only to 11 a base for other sciences and engineering. It is of their great personal concern that physics teaching and research is under 12 in many universities. How Can it be preserved in the rush towards commercial competition A major turnaround (转变) in student popularity may have to 13 until the industrial world discovers that it needs physicists and starts paying them well. Physics is now not only unpopular; it is also "hard". We can do more about the latter by 14 teaching in our schools and universities. We can also 15 cooperative arrangements to ensure that physicists keep their research and teaching up to date.
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