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Oil Refining An important new industry, oil refining, grew after the Civil war. Crude oil, or petroleum - a dark, thick ooze from the earth - had been known for …… Raising Oysters In the oysters were raised in much the same way as dirt farmers raised tomatoes- by transplanting them. First, farmers selected the oyster bed, clea…… Plankton浮游生物 Scattered through the seas of the world are billions of tons of small plants and animals called plankton. Most of these plants and animals are too s…… Botany Botany, the study of plants, occupies a peculiar position in the history of human knowledge. For many thousands of years it was the one field of awa…… British Columbia British Columbia is the third largest Canadian provinces, both in area and population. It is nearly 1.5 times as large as Texas, and extends 800 mil…… The origin of Refrigerators By the mid-nineteenth century, the term icebox had entered the American language, but ice was still only beginning to affect the diet of ordinary ci…… Telecommuting Telecommuting-- substituting the computer for the trip to the job ----has been hailed as a solution to all kinds of problems related to office work.…… Scientific Theories In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientis…… International Business and Cross-cultural Communication The increase in international business and in foreign investment has created a need for executives with knowledge of foreign languages and skills in…… Movie Music Accustomed though we are to speaking of the films made before 1927 as silent, the film has never been, in the full sense of the word, silent. From t…… Piano The ancestry of the piano can be traced to the early keyboard instruments of the fifteenth and sixteenth centuries --- the spinet, the dulcimer, and…… Ford Although Henry Fords name is closely associated with the concept of mass production, he should receive equal credit for introducing labor practices …… Collectibles Collectibles have been a part of almost every culture since ancient times. Whereas some objects have been collected for their usefulness, others hav…… The Origin of Sports When did sport begin? If sport is, in essence, play, the claim might be made that sport is much older than humankind, for , as we all have observed,…… childrens numerical skills people appear to born to compute. The numerical skills of children develop so early and so inexorably that it is easy to imagine an internal clock o…… Modern American Universities Before the 1850s, the United States had a number of small colleges, most of them dating from colonial days. They were small, church connected instit…… Evolution of sleep Sleep is very ancient. In the electroencephalographic sense we share it with all the primates and almost all the other mammals and birds: it may ext…… the war between Britain and France In the late eighteenth century, battles raged in almost every corner of Europe, as well as in the Middle East, south Africa ,the West Indies, and La…… Nobel Academy For the last 82years, Swedens Nobel Academy has decided who will receive the Nobel Prize in Literature, thereby determining who will be elevated fro…… Skyscrapers and Environment In the late 1960s, many people in North America turned their attention to environmental problems, and new steel-and-glass skyscrapers were widely cr…… Museums From Boston to Los Angeles, from New York City to Chicago to Dallas, museums are either planning, building, or wrapping up wholesale expansion progr…… Archaeology Archaeology is a source of history, not just a bumble auxiliary discipline. Archaeological data are historical documents in their own right, not mer…… Types of Speech Standard usage includes those words and expressions understood, used, and accepted by a majority of the speakers of a language in any situation rega…… Suburbanization If by suburb is meant an urban margin that grows more rapidly than its already developed interior, the process of suburbanization began during the e…… Advantages of Ads(广告的益处) Advantages of Ads Advertisers tend to think big and perhaps this is why they re always coming…… Andrew Carnegie Andrew Carnegie, known as the King of Steel, built the steel industry in the United States, and , in the process, became one of the wealthiest men i…… The World s Population(世界人口) The World s Population The first fifty years of the next millennium will be critical for the w…… The Beginning of Drama There are many theories about the beginning of drama in ancient Greece. The on most widely accepted today is based on the assumption that drama evol…… World Governments Should Conduct Serious Campaigns against S… World Governments Should Conduct Serious Campaigns against Smoking If you smoke and you still dont b…… Electricity The modern age is an age of electricity. People are so used to electric lights, radio, televisions, and telephones that it is hard to imagine what l…… |