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Old people are always saying that the young people are not (31) they were. The same comment is made (32) generation to generation and it is always (33) . It has never been truer than it is today. The young are better educated. They have a lot more money to spend and enjoy (34) freedom. They grow up more quickly and are not so (35) on their parents. Events which the old generation remember vividly are (36) more than past history. This is as it should be. Every new generation is (37) from the one that preceded it. Today the difference is very marked indeed.The old always assume that they know best for the simple (33) that they have been (39) a bit longer. They don’t like to feel that their values are being questioned or threatened. And this is precisely what the (40) are doing. They are questioning the assumptions of their elders and disturbing (41) complacency. They take leave to (42) that the older generation has created the best of all possible worlds. What they reject more than anything (43) conformity. Office, hours, for instance, and nothing more than enforced slavery. Wouldn’t people work best (44) they were given complete freedom and responsibility.’ And what (45) the clothing Who said that all the men in the world should (46) drab grey suits If we turn our minds to more serious matters, who said that human differences can best be solved through conventional politics (47) by violent means Why have the older generation so often used violence to (48) their problems Why are they are so unhappy and guilt-ridden in their personal lives, so obsessed (49) mean ambitions and the desire to amass more and more material possessions Can anything be right with the rat-race Haven’t the old lost touch with all (50) is important in life 37().
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《耕地占补平衡考核办法》规定，城市分批次建设用地占用耕地的，由当地人民政府提供补充耕地资金，通过实施土地开发整理项目先行落实补充耕地，可以使用新增建设用地土地有偿使用费。( )
Minimizing the environmental damage that new roads cause is generally regarded as a good thing. But to do that, it helps to understand just how new roads cause the damage of which they are accused.Recently, a group of researchers led by Dr Gonzalez conducted an experiment which shows what ecologists have long suspected, but never been able to prove: that immigration is good for the health of animal populations.A road destroys only a small part of the habitat it traverses, and thus annihilates just a few local populations of creatures. So the argument that road-building itself is bad for biodiversity is not self-evidently correct. Those who nevertheless hold this view usually point to a piece of ecological theory called "meta-population dynamics". This says that apparently separate local populations of animals are, in fact, parts of much larger populations connected via migration.According to this theory, when a local population flounders — because of an epidemic, for example — individuals from neighboring communities can fill the gaps. So the more such communities there are, the better the chance of a given local population remaining healthy.The implications of the theory for conservation are straightforward. Cut local populations off from each other and each is more likely to disappear. And roads are good at doing just that. Testing the theory with experimental roads, however, would be expensive. Dr Gonzalez’s brainwave was to do the whole thing on a much smaller scale.Instead of studying, say. a forest, the team looked at moss-covered rocks. These support diverse population of tiny arthropods (insects, mites and so on). On some rocks the researchers left the moss untouched; on others they scraped "roadways" across to leave "isolated" parts. After waiting six months, they found that in the disturbed habitats nearly all the bug populations had declined compared with the undisturbed moss, and 40% of the species had become extinct.The real test of the recta-population hypothesis came in the second part of the experiment. In this, the researchers scraped away moss much as before, but they left narrow moss paths to bridge the no-bug’s-land between islands. These connected patches were still not as healthy after six months as the unsullied moss, but they did far better than isolated islands — a result that supports the notion that population exchange is necessary to keep an ecosystem healthy.Whether these results can be translated to large-scale ecosystems remains uncertain. But if they can, they would cause more, not less, concern about the ecological effects of road-building. On the other hand, they also suggest a way out.In Britain, tunnels are often built under roads for animals of regular habits, such as badgers, to be able to travel their traditional routes without having to tangle with the traffic. Extending that principle, perhaps with special bridges that can support local vegetation and thus allow animals the illusion of an uninterrupted habits, might be a cheap way of letting man and nature rub along a bit better. If the result of these experiments is convincing, ().
W: Dr Huber, when did you first become interested in physics and musicM: I can’t remember a time when I wasn’t interested in physics. When I was a child, I was very curious about the world around me. For example, I always wondered why light behaves the way it does. I found it more fun to play with a prism than to play with the kids in the neighborhood. I wasn’t very social, but I was really into figuring out how things worked. I got my own telescope when I was eight years old, and I loved to take it out at night and go star gazing. I would look at the planets and stars and wonder what was out there. When I was ten, my father bought me a book on the universe, and I just ate it up. In fact, I still have that book right here in my office.It was the same with music. I’ve always had a natural ear for music, perfect pitch. Even as a young child, if I heard a song on the radio, I could go right to the piano and play it. When I heard a sound like the ring of a telephone, I could identify its pitch and play the note on the piano. However, I didn’t develop a serious interest in becoming a pianist until I was in college. I also seemed to do well in school in the visual arts like painting and drawing.W: What commonality do you see between music and physicsM: There is a common misconception that art and science are completely separate from each other. I think the distinction is artificial. In reality, art and science are not as mutually exclusive as one might assume. Solving a complicated mathematical problem, for example, can require the same degree of creative thinking as painting a landscape or writing a poem. I feel an indefinable tingle when I play the Schumann Concerto or dance the pas de deux from Romeo and Juliet. I get that same tingle from theoretical physics.The beauty of art is readily apparent to most people. However, in the case of theoretical physics, the beauty is not nearly as accessible to the general public, but it is every bit as exciting. Nature seems to follow certain principles, very much the same as art does.It’s not uncommon for physicists to become accomplished musicians. Music theory is a very mathematical discipline. Relationships among various notes in classical harmony are based on simple mathematical relationships.W: You have said that physics is beautiful. What makes it beautiful to youM: To me, it’s incredible the way nature seems to work so perfectly. I think it is beautiful. I always tell my students on the first day of class, "If you like reading Sherlock Holmes detective stories, you’ll like doing physics problems. " Physics is about figuring things out — discovering how they work, just like a detective.A lot of people fear physics because they view it as a big complicated jumble of facts that have to be memorized. But that’s not true. It’s an understanding of how nature works, how the various parts interact. One can view art and literature as the relationships and interactions of ideas. In the same way, physics studies the relationships and interactions of concepts. In other words, to me art and science fundamentally attempt to achieve the same objective an understanding of the world around us!The whole universe seems to follow some very basic principles as it evolves in time. Some of these principles include the Conservation of Energy and the Conservation of Angular Momentum. The conservation laws of physics are like non-interest bearing checking accounts. In the case of energy conservation, you can make energy deposits and energy withdrawals, but all the energy is accounted for.The rotation of objects is governed by a law called the Conservation of Angular Momentum, which applies to everything in the universe, including the rotation of stars, the rotation of the planets and their orbits, the behavior of an electron in an atom, the spin of a figure skater, and the rotation of wheels on a truck. What it all comes down to in the end is that everything in the universe fits together like the pieces of a perfect puzzle. As Einstein said, "The most incomprehensible thing about the universe is that it is comprehensible. " What does Dr Huber compare the universe to
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