单选题《复合题被拆开情况》 Soot—also known as black carbon—heats up the atmosphere because it absorbs sunlight. But for years the institutions that focus on climate policy have played down the role of pollutants such
单选题 Bill Gates was 20 years old. Steve Jobs was 21
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单选题. Specialization can be seen as a response to the problem of an increasing accumulation of scientific knowledge. By splitting up the subject matter into smaller units, one man could continue to handle the information and use it as the basis for further research. But specialization was only one of a series of related developments in science affecting the process of communication. Another was the growing professionalization of scientific activity. No clear-cut distinction can be drawn between professionals and amateurs in science: exceptions can be found to any rule. Nevertheless, the word "amateur" does carry a connotation that the person concerned is not fully integrated into the scientific community and, in particular, may not fully share its values. The growth of specialization in the nineteenth century, with its consequent requirement of a longer, more complex training, implied greater problems for amateur participation in science. The trend was naturally most obvious in those areas of science based especially on a mathematical or laboratory training, and can be illustrated in terms of the development of geology in the United Kingdom. A comparison of British geological publications over the last century and a half reveals not simply an increasing emphasis on the primacy of research, but also a changing definition of what constitutes an acceptable research paper. Thus, in the nineteenth century, local geological studies represented worthwhile research in their own right; but, in the twentieth century, local studies have increasingly become acceptable to professionals only if they incorporate, and reflect on, the wider geological picture. Amateurs, on the other hand, have continued to pursue local studies in the old way. The overall result has been to make entrance to professional geological journals harder for amateurs, a result that has been reinforced by the widespread introduction of refereeing, first by national journals in the nineteenth century and then by several local geological journals in the twentieth century. As a logical consequence of this development, separate journals have now appeared aimed mainly towards either professional or amateur readership. A rather similar process of differentiation has led to professional geologists coming together nationally within one or two specific societies, whereas the amateurs have tended either to remain in local societies or to come together nationally in a different way. Although the process of professionalization and specialization was already well under way in British geology during the nineteenth century, its full consequences were thus delayed until the twentieth century. In science generally, however, the nineteenth century must be reckoned as the crucial period for this change in the structure of science.16. The growth of specialization in the 19th century might be more clearly seen in sciences such as ______.
单选题. Kidnapping is the cruelest crime of the 20th century. There is not the political passion behind most hijacking; the motive is greed for money. The victims, provided their families are rich enough, are chosen at random. With the constant exposure by the media of personal fame and fortune, most people are vulnerable than ever. The most notorious kidnapping began on the evening of March 1, 1932, when someone placed a home-made ladder against the New Jersey home of Colonel Charles Lindbergh and stole his blond, blue-eyed baby son. A ransom (赎金) note was left from the kidnapper. Lindbergh, the first pilot to fly solo across the Atlantic, was the most popular man in America. When the boy was found a few miles away with his head crushed in, the whole nation was shocked and Congress passed the "Lindbergh Kidnap Law", with the death penalty for transporting a kidnap victim across a state line. The kidnapper, Bruno Richard Hauptmann, was caught two-and-a-half years later, when he exchanged some of the ransom money. He was executed in 1936. Kidnapping is an example of inflation: Hauptmann demanded $50,000; in 1973 the Getty family had to pay 1,300,000 pounds and the ransom delivery in two billion Italian lire weighed a ton. In this kidnapping, things went dreadfully wrong. When the kidnappers cut off Getty's fight ear and sent it to a newspaper, they forgot the postal strike which delayed this proof by three weeks. In the case of Muriel McKay, the kidnappers picked the wrong woman. The Hosein brothers had developed their plan when they saw Rupert Murdoch on a TV show in 1969 and heard him described as a millionaire, a word which stimulated their action. Yet, in tracing Murdoch's Rolls-Royce, they failed to realize that he had left for Australia with his wife and had loaned the car to Douglas McKay, a chairman of one of his enterprises. Attacking the wrong home, the Hoseins kidnapped Mrs. McKay by mistake, but still demanded their million pounds. The end result of kidnapping is never clean: Lindbergh never psychologically recovered. Young Paul Getty jokes: "It was a high-priced ear!" But the scars must be internal, too. The saddest comment came from Douglas McKay after the trial of the Hoseins: "They have got a life sentence. 1, too, have a life sentence wondering just what has happened to my dear wife."1. Why are most people vulnerable than ever according to the writer? ______
单选题. Questions 20 to 22 are based on the passage you have just heard.5.
单选题. Questions 16 to 18 are based on the passage you have just heard.1.
单选题《复合题被拆开情况》 IKEA is a Swedish furniture and home products retailer that has stores all over the world. It is famous for well-priced flat pack furniture that customers assemble at home. It also sells ac
单选题. Questions 3 and 4 will be based on the following news item.3.
单选题. Questions 3 and 4 are based on the news report yon have just heard.3.
单选题《复合题被拆开情况》 We didn’t worry much about keeping fit 100 years ago. A sizeable percentage of the world’s population was reaping and sowing, herding and mowing its way through life on preindustrial farms.
单选题. Questions 5 to 7 will be based on the following news item.5.
单选题. Questions 12 to 15 are based on the conversation you have just heard.5.
单选题. A Census Bureau (人口调查局) survey released Thursday shows a college graduate can expect to earn $ 2.1 million working full-time between ages 25 and 64, which demographers (人口学家) call a typical work-life period. A master's degree-holder is projected to earn $ 2.5 million, while someone with a professional degree, such as a doctor or lawyer, could make even more than $4.4 million. In contrast, a high school graduate can expect to make $1.2 million during the working years, according to the bureau report that tracked the influence of education on lifetime earnings. Not all students look at college as an investment, "but I'm sure parents do," said Jacqueline King, policy analyst with the American Council of Education, a higher education advocacy (拥护) group. "The challenge is to convince those high school students on the margins that it is really worth their time to go to college." Kevin Malecek, a graduate student in American politics at American University in Washington, said most of his classmates find higher education to be worth the time and financial commitment. "They go to every single class, and they are trying to get the most out of their own dollar," he said. The survey was conducted between March 1998 and March 2000. All estimates are based on 1999 salaries and probably will increase as salaries rise over time, Census Bureau analyst Jennifer Day said. The estimates do not account for inflation (物价上涨) or for differences in the earning potential of various fields of study. For example, people with computer science degrees tend to earn more than those with social work degrees.6. The phrase "students on the margins" in Paragraph 2 most probably refers to ______.
单选题 People have grown taller over the last century