单选题The school shooting triggered a barrage of transparently irrelevant proposed solutions, tossed out without regard to their relevance to the events that supposedly______the proposals. A. occasioned B. concerned C. illuminated D. ensued

单选题The author feels that a comparison of liquid and solid-fuel rockets shows that ______.

单选题We can learn from the passage that those at the computer center in the middle of the night ale ______.

单选题He likes to take a hand in everything, even those that hardly concern him. A. offer help to B. get mixed up in C. have a part in D. make a fuss over

单选题The government cannot take private property for public use without ______.

单选题If you don't______cooking today, we can go out to eat at the new restaurant.

单选题They conceded that her statement was true.

单选题{{B}}Passage 1{{/B}} The next time the men were taken up onto the deck, Kunta made a point of looking at the man behind him in line, the one who lay beside him to the left when they were below. He was a Serer tribesman much older than Kunta, and his body, front and back, was creased with whip cuts, some of them so deep and festering that Kunta, felt badly for having wished sometimes that be might strike the man in the darkness for moaning so steadily in his pain. Staring back at Kunta, the Serer's dark eyes were full of fury and defiance. A whip lashed out even as they stood looking at each other--this time at Kunta, spurring him to move ahead. Trying to roll away, Kunta was kicked heavily in his ribs. But somehow he and the gasping Wolof managed to stagger back up among the other men from their shelf who were shambling toward their dousing with bucked of seawater. A moment later, the stinging saltiness of it was burning in Kunta's wounds, and his screams joined those of others over the sound of the drum and the wheezing thing that had again begun marking time for the chained men to jump and dance for the toubob. Kunta and the Wolof were so weak from their new beating that twice they stumbled, but whip blows and kicks sent them hopping clumsily up and down in their chains. So great was his fury that Kunta was barely aware of the women singing "Toubob fa!" And when he had finally been chained back down in his place in the dark hold, his heart throbbed with a lust to murder toubob. Every few days the eight naked toubob would again Come into the stinking darkness and scrape their tubs full of the excrement that had accumulated on the shelves where the chained men lay. Kunta would lie still with his eyes staring balefully in hatred, following the bobbing orange lights, listening to the toubob cursing and sometimes slipping and tailing into the slickness underfoot--so plentiful now, because of the increasing looseness of the men's bowels, that the filth had begun to drop off the edges of the shelves down into the aisleway. The last time they were on deck, Kunta had noticed a man limping on a badly infected leg. This time the man was kept up on deck when the rest were taken back below. A few days later, the women told the other prisoners in their singing that the man's leg had been cut off and that one of the women had been brought to tend him, but that the man had died that night and been thrown over the side. Starting then, when the toubob came to clean the shelves, they also dropped re& hot pieces of metal into pails of strong vinegar. The clouds of acrid steam left the hold smelling better, but soon it would again be overwhelmed by the choking stink. It was a smell that Kunta felt would never leave his lungs and skin. The steady murmuring that went on in the hold whenever the toubob were gone kept growing in volume and intensity as the men began to communicate better and better with one another. Words not understood were whispered from mouth to ear along the shelves until someone who knew more than one tongue would send back their meanings. In the process, all of the men along each shelf learned new words in tongues they had not spoken before. Sometimes men jerked upward, bumping their heads, in the double excitement of communicating with each other and the fact that it was being done without the toubob's knowledge. Muttering among themselves for hours, the men developed a deepening sense of intrigue and of brotherhood. Though they were of different villages and tribes, the feeling grew that they were not from different peoples or places.

单选题Hardy was stimulated by the sights, sounds and smells about him; he was enjoying his Usensuous/U experience.

单选题Seeing that the discussion was evidently______to her, he dropped it.

单选题In the ______ of the project not being a success, the investors stand to lose up to $30 million.(2002年上海交通大学考博试题)

单选题A Given the already documented incidence of abuse and violence B in adolescent's lives , the avoidance of these issues reinforces the message that C such matters are private and individual rather than socially based. This attitude only serves D to cover up the extent of abuse and perpetuate the shame that such silence promotes.

单选题The range in frequencies of musical sounds is approximately 20-20,000 cycles per second (cy/sec). Some people can hear higher frequencies khan others. Longitudinal waves whose frequencies are higher than those within the audible range are called ultrasonic frequencies. Ultrasonic frequencies are used in sonar for such purposes as submarine detection and depth finding. Ultrasonic frequencies are also being tried for sterilizing food since these frequencies kill some bacteria. Sound waves of all frequencies in the audible range travel at the same speed in the same medium. In the audible range, the higher the frequency of the sound the higher is the pitch. The term supersonic refers to speed greater than sound. An airplane traveling at supersonic speed is moving at a speed greater than the speed of sound in air at that temperature. Mach 1 means a speed equal to that of sound. Mach 2 means a speed equal to twice that of sound, etc. Musical sounds have three basic characteristics: pitch, loudness, and quality or timbre. As was indicated above, pitch is determined largely by the frequency of the wave reaching the ear. The higher the frequency the higher is the pitch. Loudness depends on the amplitude of the wave reaching the ear. For a given frequency, the greater the amplitude of the wave the louder the sound. To discuss quality of sound we need to clarify the concept of overtones. Sounds are produced by vibrating objects. If these objects are given a gentle push, they usually vibrate at one definite frequency producing a pure tone. This is the way a tuning fork is usually used. When objects vibrate freely after a force is momentarily applied, they are said to produce their natural frequency. Some objects, like strings and air columns, can vibrate naturally at more than one frequency at a time. The lowest frequency which an object can produce when vibrating freely is known as the object's fundamental frequency. Other frequencies that the object can produce are known as its overtones. The quality of a sound depends on the number and relative amplitude of the overtones present in the wave reaching the ear.

单选题Some people believe that "King John" was written by Shakespeare, but some believe it might be written by an ______ author. A. delivered B. anonymous C. antique D. ambiguous

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单选题Two hours from the tall buildings of Manhattan and Philadelphia live some of the world's largest black bears. They are in northern Pennsylvania's Pocono Mountains, a home they share with an abundance of other wildlife. The streams, lakes, meadows, mountain ridges and forests that make the Poconos an ideal place for black bears have also attracted more people to the region. Open spaces are threatened by plans for housing estates and important habitats are endangered by highway construction Toprotect the Poconos'natural beauty from irresponsible development, the Nature Conservancy named the area one of America's "Last Great Places". Operating out of a century-old schoolhouse in the village of Long Pond, Pennsylvania, the conservancy's Bud Cook is working with local people and business leaders to balance economic growth with environmental protection. By forging partnerships with people like Francis Altemese, the Conservancy has been able to protect more than 14, 000 acres of environmentally important land in the area. Altemose's family has farmed in the Pocono area for generations. Two years ago Franchl worked with the Conservancy to include his farm in a county farmland protection program As a result, his family's land can be protected from development and the Altemoses will be better able to provide a secure financial future for their 7-year-old grandson. Cook attributes the Conservancy's success in the Poconos to having a local presence and a commitment to working with local residents. "The key to protecting these remarkable lands is connecting with the local community," Cook said, "The people who live there respect the land. They value quiet forests, clear streams and abundant wildlife. They are eager to help with conservation effort. " For more information on how you can help The Nature Conservancy protect the Poconos and the world's other "Last Great Places," please call 1-888-5646864. Or visit us on the World Wid Web at www. tnc. org.

单选题A scorching sun, an endless sea of sand and a waterless, forbiddingly lonely land—that is the image most people have of deserts. But how true is this picture? Deserts are drylands where rainfall is low. This is not to say rain never falls in deserts: it may fall once or twice a year in a fierce torrent that fades almost as soon as it has begun, or which evaporates in the hot air long before it has got anywhere near the earth. It may fall in a sudden sweeping flood that carries everything in its path. Rains may only come once in five or six years or not fall for a decade or more. The Mojave desert in the United States remained dry for twenty-five years. Without water no living thing can survive, and one feature of the true desert landscape is the absence of vegetation. With little rain and hardly any vegetation the land suffers under the sun. There are virtually no clouds or trees to protect the earth's surface and it can be burning hot. Under the sun, soils break up and crack. Wind and torrential rain sweep away and erode the surface further. Eight million square kilometers of the world's land surface is desert. Throughout history deserts have been expanding and retreating again. Cave paintings show that parts of the Sahara Desert were green and fertile about 10,000 years ago, and even animals like elephants and giraffes roamed the land. Fossil and dunes found in fertile and damp parts of the world show that these areas were once deserts. But now the creation of new desert areas is happening on a colossal scale. Twenty million square kilometers, an area twice the size of Canada, is at a high to very high risk of becoming desert. With a further 1.25 million square kilometers under moderate risk, an area covering 30% of the earth's land surface is desert, becoming desert, or in danger of becoming desert. The rate of growth of deserts is alarming. The world's drylands which are under threat include some of the most important stock-rearing and wheat-growing areas and are the homes of 600--700 million people. These regions are becoming deserts at the rate of more than 58, 000 square kilometers a year or 44 hectares a minute. In North Africa at least 100,000 hectares of cropland am lost each year. At this rate there is a high risk that we will be confined to living on only 50% of this planet's land surface within one more century unless we am able to do something about it.

单选题The man who never tries anything new is a(n)______on the wheels of progress.

单选题He had wanted a 25 % raise in pay, hut after talking to his boss, he decided that a 5% raise would have to ______.