单选题The law prohibits occupancy by more than 250 persons in this are

单选题If income is transferred from rich persons to poor persons, the proportion in which different sorts of goods and services are provided will be changed. Expensive luxuries will give place to more necessary articles, rare wines to meat and bread, new machines and factories to clothes and improved small dwellings; and there will be other changes of a like sort. In view of this fact, it is inexact to speak of a change in the distribution of the dividend in favor of, or adverse to, the poor. There is not a single definitely constituted heap of things coming into being each year and distributed now in one way, now in another. In fact, there is no such thing as the dividend from the point of view of both of two years, and therefore, there can be no such thing as a change in its distribution. This, however, is a point of words rather than of substance. What I mean when I say that the distribution of the dividend has changed in favor of the poor is that, the general productive power of the community being given, poor people are getting more of the things they want at the expense of rich people getting less of the things they want. It might be thought at first sight that the only way in which this could happen would be through a transference of purchasing power from the rich to the poor. That, however, is not so. It is possible for the poor to be advantaged and the rich damaged, even though the quantity of purchasing power, i.e. of command over productive resources, held by both groups remains unaltered. This might happen if the technical methods of producing something predominatingly consumed by the poor were improved and at the same time those of producing something predominatingly consumed by the rich were worsened, and if the net result was to leave the size of the national dividend as defined in Chapter V. unchanged. It might also happen if, by a system of rationing or some other device, the rich were forced to transfer their demand away from things which are important to the poor and which are produced under such conditions that diminished demand leads to lowered prices. Per contra—and this point will be seen in Part Ⅳ. To be very important practically—he share, both proportionate and absolute of command over the country's productive resources held by the poor may be increased, and yet, if the process by which they acquire this greater share involves an increase in the cost of things that play a large part in their own consumption, they may not really gain. Thus a change in distribution favorable to the poor may be brought about otherwise than by a transference of purchasing power, or command over productive resources, to them, and it does not mean a transference of these things to them. Nonetheless, this sort of transference is the most important, and may be regarded as the typical means by which changes in distribution favorable to the poor come about.

单选题Nowadays, we hear a lot about the growing threat of globalization, accompanied by those warnings that the rich pattern of local life is being undermined, and many dialects and traditions are becoming extinct. But stop and think for a moment about the many positive aspects that globalization is bringing. Read on and you are bound to feel comforted, ready to face the global future, which is surely inevitable now. Consider the Internet, that prime example of our shrinking world. Leaving aside the all-too-familiar worries about pornography and political extremism, even the most narrow-minded must admit that the net offers immeasurable benefits, not just in terms of education, the sector for which it was originally designed, but more importantly on a global level, the spread of news and comment. It will be increasingly difficult for politicians to maintain their regimes of misinformation, as the oppressed will not only find support and comfort, but also be able to organize themselves more effectively. MTV is another global provider that is often criticized for imposing popular culture on the unsuspecting millions around the world. Yet the viewers" judgment on MTV is undoubtedly positive; it is regarded as indispensable by most of the global teenage generation who watch it, a vital part of growing up. And in the final analysis, what harm can a few songs and videos cause? Is the world dominance of brands like Nike and Coca-Cola so bad for us, when all is said and done? Sportswear and soft drinks are harmless products when compared to the many other things that have been globally available for a longer period of time—heroin and cocaine, for example. In any case, just because Nike shoes and Coke cans are for sale, it doesn"t mean you have to buy them—even globalization cannot deprive the individual of his flee will. Critics of globalization can stop issuing their doom and gloom statements. Life goes on, and has more to offer for many citizens of the world than it did for their parents" generation.

单选题______ of half-starving wolves were roaming the snow-covered countryside.

单选题______ a continuous mass of water on the Earth"s surface, all continents are islands in the strict sense of the word.

单选题After the surface is polished, a design is ______ or painted.

单选题How much of the world's land surface is at risk of becoming desert?

单选题The physician had to visit his patient six ______ days before the patient could be considered in a fair condition. A. consequent B. consecutive C. consistent D. conservative

单选题The amending Treaty on European Union can become law only if there is ______ agreement to this effect.(2003年中国科学院考博试题)

单选题How can personal income tax be levied to ______ as many as possible while at the same time ensuring state finances do not suffer too much? A. interest B. benefit C. profit D. concern

单选题Since she was alone, she opened the door ______, leaving the chain lock fastened. A.warily B.consciously C.audaciously D.recklessly

单选题Thousands of years ago man used handy rocks for his surgical operations. Later he used sharp bone or horn, metal knives and more recently, rubber and plastic. And that was where we stuck, in surgical instrument terms, for many years. In the 1960s a new tool was developed, one which was, first of all, to be of great practical use to the armed forces and industry, but which was also, in time, to revolutionize the art and science of surgery. The tool is the laser and it is being used by more and more surgeons all over the world, for a very large number of different complaints. The word laser means: Light Amplification by Stimulated Emission of Light. As we all know, light is hot; any source of light ——from the sun itself down to a humble match burning ——will give warmth. But light is usually spread out over a wide area. The light in a laser beam, however, is concentrated. This means that a light with no more power than that produced by an ordinary electric light bulb becomes intensely strong as it is concentrated to a pinpoint-sized beam. Experiments with these pinpoint beams showed researchers that different energy sources produce beams that have a particular effect on certain living cells. It is now possible for eye surgeons to operate on the back of the human eye without harming the front of the eye, simply by passing a laser beam right through the eyeball. No knives, no stitches (刀口缝合), no unwanted damage ——a true surgical wonder. Operations which once left patients exhausted and in need of long periods of recovery time now leave them feeling relaxed and comfortable. So much more difficult operations can now be tried. The rapid development of laser techniques in the past ten years has made it clear that the future is likely to be very exciting. Perhaps some cancers will be treated with laser in a way that makes surgery not only safer but more effective. Altogether, tomorrow may see more and more information coming to light on the diseases which can be treated medically.

单选题Chemistry did not emerge as: science until after the scientific revolution in 17th century and then only rather slowly and laboriously. But chemical knowledge is as old as history, being almost entirely concerned with the practical arts of living. Cooking is essentially a chemical process; so is the melting of metals and the administration of drugs and potions. This basic chemical knowledge, which was applied in most cases as a rule of thumb, was nevertheless dependent on previous experiment. It also served to stimulate a fundamental curiosity about the processes themselves. New information was always being gained as artisans improved techniques to gain better results. The development of a scientific approach to chemistry was, however, hampered by several factors. The most serious problem was the vast range of material available and the consequent difficulty of organizing it into some system. In addition, there were social and intellectual difficulties. Chemistry is nothing if not practical: those who practice it must use their hands, they must have a certain practical aptitude. Yet in many ancient civilizations, practical tasks were primarily the province of a slave population. The thinker or philosopher stood apart from this mundane world, where the practical arts appeared to lack any intellectual content or interest. The final problem for early chemical science was the element of secrecy. Experts in specific trades had developed their own techniques and guarded their knowledge to prevent others from stealing their livelihood. Another factor that contributed to secrecy was the esoteric nature of the knowledge of alchemists, who were trying to transform base metals into gold or were concerned with the hunt for the elixir (炼金药). That would bestow the blessing of eternal life. In one sense, the second of these was the more serious impediment because the records of the chemical processes that early alchemists had discovered were often written down in symbolic language intelligible to very few or in symbols that were purposely obscure.

单选题The number of stay-at-home fathers reached a record high last year, new figures show, as families saw a______ in female breadwinners. (2013年北京大学考博试题)

单选题The little boy couldn't resist the ______to take the money on the table.

单选题In 1844, Charles Sturt, a British soldier and colonial administrator, made an expedition ______ a supposed inland sea; his party penetrated more than 1000 miles northward, almost to the center of Australia. A. in quest of B. with regard to C. in favor of D. by way of

单选题The continuous rain set______the harvesting of wheat by two weeks.

单选题Very few scientists ______ completely new answers to the world's problems. A. come up with B. come out C. come round D. come up to