题目内容
Some years ago. an American policeman found a woman lying near a lonely mad. She did not appear to have had any accident, but she was trembling and clearly in a state of shock, SO he rushed her to the nearest hospital. She began lo tell the doctor on duty a story which was astonishing in all respects.She had been driving along a country road when she was stopped by a flying saucer landing in front of her. She bad been forced to leave the car and enter the flying saucer by some creatures. These creatures looked like human beings and could easily make themselves understood although they could not speak. It was as though they could read her thoughts and she could read theirs. They treated her politely and allowed her to leave after carrying out a number of tests on her. As she otherwise seemed to be normal, the doctor decided that she was probably suffering from the side effects of some drug. The woman insisted on being allowed to go home but when she gave her address, it was in a town over a thousand miles from the hospital. The police then started to make inquiries, They soon discovered that there was already a search going on for the woman, whose husband had reported that she had disappeared. Her car had been found with the driver’s door open and engine running. In front of her car the surface of the road had been completely destroyed, not by any explosion or anything of that kind, but as though a large, circular, wide, hot object had burnt through it. According to the woman’s account, what happened to her()
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When workers become more efficient, it’s normally a good thing. But lately, it has acted as a powerful brake on job creation. And the question of whether the recent surge in productivity has run its course is the key to whether job growth is finally poised to take off.One of the great surprises of the economic downturn that began 27 months ago is this.. Businesses are producing only 3 percent fewer goods and services than they were at the end of 2007, yet Americans are working nearly 10 percent fewer hours because of a mix of layoffs and cutbacks in the workweek.(46) That means high-level gains in productivity--which in the long run is the key to a higher standard of living but in the short run contributes to sky-high unemployment. So long as employers can squeeze dramatically higher output from every worker, they won’t need to hire again despite the growing economy.(47) On Friday, the Labor Department will release a closely watched March employment report expected to show the strongest job growth in three years, driven by stabilization in the economy and a rebound from February snowstorms.A strong March job-growth number-at a time when the economy is growing at only a middling pace--would suggest that the productivity boom has largely run its course. (48) Regardless, the question of what caused the burst in workers’ efficiency is one of the great unanswered questions of the expansion and has huge stakes for the economy over the coming year."It is an episode that we’re going to--we, economists in general--are going to want to understand better and look at for a long time," Federal Reserve Chairman Ben S. Bernanke said at a hearing last week in which he described the productivity gains as "extraordinary" and acknowledged he had not foreseen them.(49) Businesses have certainly not been investing in new equipment that might enable workers to be more efficient-capital expenditures plummeted during the recession and are rebounding slowly. (50) And the structural shifts occurring in the economy are so profound that one would expect productivity to be lower, rather than higher, as people need new training to work in parts of the economy that are growing, such as exports and the clean-energy sector.So what’s happening As best as anyone can guess, the crisis that began in 2007 and deepened in 2008 caused both businesses and workers to panic. And the structural shifts occurring in the economy are so profound that one would expect productivity to be lower, rather than higher, as people need new training to work in parts of the economy that are growing, such as exports and the clean-energy sector.
心包无钙化而心内膜有钙化为其病理特点
患者，男，56岁。胃小弯溃疡穿孔行Billroth Ⅱ式胃大部切除术后第3天，剧烈咳嗽后突发上腹部剧痛，呈持续性，无阵发加剧。后发热，最高体温39.5℃。查体：上腹明显压痛反跳痛，尤以右上腹为甚，腹部无移动性浊音，肠鸣音寂然。 本例最可能的诊断是
The promise of finding long-term technological solutions to the problem of world food shortages seems difficult to fulfill Many innovations that were once heavily supported and publicized have since fallen by the wayside. The proposals themselves were technically feasible, but they proved to be economically unenviable and to yield food products culturally unacceptable to their consumers.One characteristic common to unsuccessful food innovations has been that, even with extensive government support, they often have not been technologically adapted or culturally acceptable to the people for whom they had been developed. A successful new technology, therefore, must fit the entire sociocultural system in which it is to find a place Security of crop yield, practicality of storage, and costs are much more significant than what had previously been realized by the advocates of new technologies.The adoption of new food technologies depends on more than these technical and cultural considerations; economic factors and governmental policies also strongly influence the ultimate success of any innovation. Economists in the Anglo-American tradition have taken the lead in investigating the economics of technological innovation. Although they exaggerate in claiming that profitability is the key factor guiding technical change -- they completely disregard the substantial effects of culture—they are correct in stressing the importance of profits. Most technological innovations in agriculture can be fully used only by large landowners and are only adopted if these profit-oriented business people believe that the innovation will increase their incomes, Thus innovations that carry high rewards for big agribusiness groups will be adopted even if they harm segments of the population and reduce the availability of food in a country. Further, should s new technology promise to alter substantially the profits and losses associated with any production system, those with economic power will strive to maintain and improve their own positions. Therefore, although technical advances in food production and processing will perhaps be needed to ensure food availability, meeting food needs will depend much more on equalizing economic power among the various segments of the populations within the developing countries themselves. The phrase "fall by the wayside" in the second sentence, Paragraph t means"()".
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