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序号 题目内容
260 Long overshadowed by the Maya and Aztec civilizations, historians are now exploring the more ancient Olmec culture for the legacy it had for succeeding Mesoamerican societies.
261 The bank holds$3 billion in loans that are seriously delinquent or in such trouble that they do not expect payments when due.
262 A researcher claims that a tornado of a given size and strength is likely to cause more deaths, both proportionately and in absolute numbers, in the southeastern region of the United States than in the northeastern.
263 Heirloom tomatoes, grown from seeds saved from the previous year, only look less appetizing than their round and red supermarket cousins, often green and striped, or have plenty of bumps and bruises, but are more flavorful.
264 In the textbook publishing business, the second quarter is historically weak, because revenues are low and marketing expenses are high as companies prepare for the coming school year.
265 Because of the sharp increases in the price of gold and silver, the value of Monica Taylor's portfolio rose as her daughter-in-law's dropped.
266 Ms. Chambers is among the forecasters who predict that the rate of addition to arable lands will drop while those of loss rise.
267 In keeping with her commitment to her Christian faith, Sojourner Truth demonstrated as a public speaker a dedication both to the nonviolent abolition of slavery as well as for women to be emancipated.
268 Less than 400 Sumatran rhinos survive on the Malay peninsula and on the islands of Sumatra and Borneo, and they occupy a small fraction of the species` former range.
269 Certain pesticides can become ineffective if used repeatedly in the same place; one reason is suggested by the finding that there are much larger populations of pesticide-degrading microbes in soils with a relatively long history of pesticide use than in soils that are free of such chemicals.
270 While some academicians believe that business ethics should be integrated into every business course, others say that students will take ethics seriously only if it would be taught as a separately required course.
271 Whether they will scale back their orders to pre-2003 levels or stop doing business with us altogether depends on whether the changes that their management has proposed will be fully implemented.
272 Until 1868 and Disraeli, Great Britain had no prime ministers not coming from a landed family.
273 Around 1900, fishermen in the Chesapeake Bay area landed more than seventeen million pounds of shad in a single year, but by 1920, overfishing and the proliferation of milldams and culverts that have blocked shad migrations up their spawning streams had reduced landings to less than four million pounds.
274 By offering lower prices and a menu of personal communications options,such as caller identification and voice mail,the new telecommunications company has not only captured customers from other phone companies but also forced them to offer competitive prices.
275 After suffering $2 billion in losses and 25,000 layoffs, the nation`s semiconductor industry, which makes chips that run everything from computers and spy satellites to dishwashers, appears to have made a longawaited recovery.
276 Over a range of frequencies from 100 to 5,000 hertz, monkeys and marmosets have a hearing sensitivity remarkably similar to humans , above which the sensitivity begins to differ.
277 The computer company has announced that it will purchase the color-printing division of a rival company for $950 million, which is part of a deal that will make it the largest manufacturer in the office color-printing market.
278 Kudzu, an Asian vine that has grown rampantly in the southern United States since introducing it in the 1920s to thwart soil erosion, has overrun many houses and countless acres of roadside.
279 Unable to build nests or care for their young, a female cowbird lays up to 40 eggs a year in the nests of other birds, including warblers, vireos, flycatchers, and thrushes.

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