单选题The Internet has been around for an almost equal amount of time as most forms of media, but only recently______a popular way of retrieving information.

单选题The police let him go, because they didn't find him guilty ______ the murder. A. of B. in C. over D. on

单选题A ______ of soap and two brightly colored towels were left beside the bath, the women smiled politely at Nicole and withdrew carefully form the room.

单选题In 1900 the United States had only three cities with more than a million residents—New York, Chicago, and Philadelphia. By 1930, it had ten giant metropolises. The newer ones experienced remarkable growth, which reflected basic changes in the economy. Line The population of Los Angeles (114,000 in 1900) rose spectacularly in the early decades of the twentieth century, increasing a dramatic 1,400 percent from 1900 to 1930. A number of circumstances contributed to the meteoric rise of Los Angeles. The agricultural potential of the area was enormous if water for irrigation could be found, and the city founders had the vision and dating to obtain it by constructing a 225-mile aqueduct, completed in 1913, to tap the water of the Owens River. The city had a superb natural harbor, as well as excellent rail connections. The climate made it possible to shoot motion pictures year-round; hence Hollywood. Hollywood not only supplied jobs; it disseminated an image of the good life in Southern California on screens all across the nation. The most important single industry powering the growth of Los Angeles, however, was directly linked to the automobile. The demand for petroleum to fuel gasoline engines led to the opening of the Southern California oil fields, and made Los Angeles North America"s greatest refining center. Los Angeles was a product of the auto age in another sense as well: its distinctive spatial organization depended on widespread private ownership of automobiles. Los Angeles was a decentralized metropolis, sprawling across the desert landscape over an area of 400 square miles. It was a city without a real center. The downtown business district did not grow apace with the city as a whole, and the rapid transit system designed to link the center with outlying areas withered away from disuse. Approximately 800,000 cars were registered in Los Angeles County in 1930, one per 2.7 residents. Some visitors from the east coast were dismayed at the endless urban sprawl and dismissed Los Angeles as a mere collection of suburbs in search of a city. But the freedom and mobility of a city built on wheels attracted floods of migrants to the city.

单选题The flashing red light served as a ______ of danger ahead.

单选题For fear of being scolded by the teacher, the boy gave a ______ excuse for his absence.

单选题Monkeys ale excellent climbers, and most are ______ tree dwellers. A. often B. primarily C. rarely D. savagely

单选题John was surprised to ______ Matthew at the football game. A. bump into B. drop in at C. come on D. see off

单选题______, the short is in some ways not really new. A. Like many another new things B. Like much other new things C. Like many other new things D. Like many another new thing

单选题The low interest rates on banks loans provided an Uimpetus/U for many to buy homes.

单选题Obviously, no teacher has______patience. Even Larry, who is always kind and tolerant, lost his temper on that particular occasion.(厦门大学2012年试题)

单选题The branches could hardly ______ the weight of the fruit.

单选题As the contest shows, a placebo is ______.

单选题The expression “speculated on” (line 4) means __________ .

单选题My father did not go to New York; the doctor suggested that he ______ there.

单选题So far, the police can only ______ on the possible motives for the killing.

单选题The single business of Henry Thoreau, during forty-odd years of eager activity, was to discover all economy calculated to provide a satisfying life. His one concern, which gave to his ramblings in Concord fields a value of high adventure, was to explore the true meaning of wealth. As he understood the problems of economics, there were three possible solutions open to him, to exploit himself, to exploit his fellows, or to reduce the problem to its lowest denominator. The first was quite impossible--to imprison oneself in a treadmill when the morning called to great adventure. To exploit one's fellows seemed to Thoreau's sensitive social conscience an even greater infidelity. Freedom with abstinence seemed to him better than serfdom with material well-being, and he was content to move to Walden Pond and set about the high business of living, "to front only the essential facts of life and to see what it had to teach." He did not advocate that other men should build cabins and live isolated. He had no wish to dogmatize concernig the best mode of living--each must settle that for himself. But that a satisfying life should be lived, he was virtually concerned. The story of his emancipation from the lower economics is the one romance of his life, and Walden is his great book. It is a book in praise of life rather than of Nature, a record of calculating economies that studied saving in order to spend more largely. But it is a book of social criticism as well, in spite of its explicit denial of such a purpose. In considering the true nature of economy he concluded, with Ruskin, that the cost of a thing is the amount of life which is required in exchange for it, immediatey or in the long run. In Walden Thoreau elaborated the text: "The only wealth is life.\