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The City
In one sense, we can trace all the problems of the American city back to a single starting point: we Americans don't like our cities very much.
That is, on file face of it, absurd (荒谬的). After all, more than three-fourths of us now live in cities, and more are flocking to them every year. We are told that the problems of our cities are receiving more attention in Washington, and scholarship has discovered a whole new field in urban studies.
I don't pretend to be a scholar on the history of the city in American lifE.But my thirteen years in public office, first as an officer of the U.S. Department of Justice, then as Congressman, and now as Mayor of the biggest city in America, have taught me all too well the fact that a strong anti-urban attitude runs consistently through the mainstream of American thinking. Much of the drive behind the settlement of America was in reaction to the conditions in European industrial centers -- and much of the theory supporting the basis of freedom in America was linked directly to the availability of land and the perfectibility of man outside the corrupt influences of the city.
What has this to do with the predicament of the modem city? I think it has much to do with it. The fact is that the United States, particularly the federal government, which has historically established our national priorities, has simply never thought that the American city was 'worthy' of improvement -- at least not to the extent of expending any basic resources on it.
Antipathy (反感) to the city predates the American experiencE.When industrialization drove the European working man into the major cities of the continent, books and pamphlets appeared attacking the city as a source of crime, corruption, filth, disease, vice, licentiousness (放荡), subversion, and high prices. The theme of some of the earliest English novels -- Moll Flander for example -- is that of the innocent country youth coming to the big city and being subjected to all forms of horror until justice -- and a return to the pastoral life -- follow.
The proper opinion of Europe seemed to support the Frenchman who wrote: 'In the country, a man's mind is free and easy; but in the city, the persons of friends and acquaintances, one's own and other people's business, foolish quarrels, ceremonies, visits, impertinent discourses, and a thousand other diversions steal away the greatest part of our time and leave no leisure for better and necessary employment. Great towns are but a large sort of prison to the soul, like cages to birds or pounds to beasts.'
This was not, of course, the only opinion on city lifE.Others maintained that the city was 'the fireplace of civilization, whence light and heat radiated out into the cold dark worlD.' And William Penn planned Philadelphia as the 'holy city,' carefully laid out so that each house would have the appearance of a country cottage m avoid the density and overcrowding that so characterized European cities.
Without question, however, the first major thinker to express a clear antipathy to the urban way of life was Thomas Jefferson. For Jefferson, the political despotism (专制制度) of Europe and economic despotism of great concentrations of wealth, on the one hand, and poverty on the other, were symbolized by the cities of London and Paris, which he visited frequently during his years as a diplomatic representative of the new nation. In the new world, with its opportunities for widespread landholding, there was the chance for a flowering of authentic freedom, with each citizen, free from economic dependence, both able and eager to participate in charting the course of his own futurE.America, in a real sense, was an escape from all the injustice that had flourished in Europe -- injustice that was characterized by the big city.
This Jeffersonian theme was to remain an integral part of the A
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解析:从第三段的第二句话“But my thirteen years in public office,fi......

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阅读短文,完成91—95题。太阳风是1958年人造卫星测得,并为美国科学家帕克等人首先发现的。1962年,“水手2号”飞船获得的资料进一步证实了“太阳风”的存在。1964年,美国著名科幻作家阿瑟.克拉克发表了一篇杰作《太阳帆船》,公开提出利用太阳光子流形成的太阳风扬帆碧空,实现星际航行。这个设想很有“刺激性”,很鼓舞人。1994年11月2日美国航天航空局为此专门发射了一艘无人驾驶的宇宙飞船,耗费2亿美元,用来对太阳风进行为期3年以上的观测研究。那么,什么是太阳风呢?所谓太阳风,指的是____________。太阳是由太阳核、对流层、光球层、色球层和日冕层共同组成的。日冕层是太阳大气的最外层,由稀薄的等离子体组成,粒子密度为每立方厘米1000万至10000万个,温度约为15000摄氏度。由于太阳温度极高,引起日冕连续不断地向外膨胀,驱使这些由低能电子和质子组成的等离子体不停地向行星际空间运动。这些带电粒子运动的速度达到每秒350公里以上,最高每秒达1000公里。尽管太阳的引力比地球的引力要大28倍,但这样高速的粒子流仍有一部分要冲脱太阳的引力,像阵阵狂风那样不停地“吹”向行星际空间,所以被人们形象地称之为“太阳风”。科学家根据对太阳风的基本特征的了解,现已查明:太阳风的风源来自“冕洞”。“冕洞”是日冕表面温度和密度都较低的部分,在X光射线和紫外线下看起来比周围地带要暗,就像是一个个的黑洞,不间断地出现在太阳“两极”地区。随着太阳旋转而旋转的冕洞,如同草地上浇水的水龙头,把太阳内部爆发产生的“高速等离子流”抛向太空。由于太阳自转会合周期是27天,因此,每隔27天,源于冕洞的“太阳风”就会“扫过”或“吹向”地球一次。“太阳风”从太阳“吹”向地球,一般只需要5至6天的时间。它一直可以“吹送”到冥王星轨道以外“日冥距离”(约合50个天文单位,即50×1.49亿公里)的4倍处,才被星际气体所制止。强劲的太阳风“吹”向地球的时候,会对地球产生一系列的影响。最明显的是引起地球磁场的变化。强大的太阳风能够破坏原来条形磁铁式的磁场,将它压扁而不对称,形成一个固定的区域——磁层。磁层的外形像一只头朝太阳的“蝉”,“尾部”拖得很长很长。而太阳风的带电粒子流可以激发地球上南北极及其附近上空的空气分子和原子。这些微粒受激后,能发出多种形态的极光。巨大的冲击还能强烈地扭曲磁场,产生被称为“杀手”的电子湍流。这种电子湍流不但能钻进卫星内部造成永久性破坏,还能切断变电器及电力传送设施,造成地面电力系统全面崩溃。太阳风的带电粒子流还会使地球上空电离层受到干扰,引起磁爆,给无线电短波通信、电视、航空和航海事业带来不利影响。太阳风也会引发磁层亚暴。在磁层亚暴期间,距离地球表面36000公里的高空处可能会产生强烈的真空放电和高压电弧,给同步轨道上的卫星带来灾难,甚至导致卫星陨灭。1998年5月发生的一次太阳风使美国发射的一颗通信卫星失灵,导致美国4000万个寻呼用户无法收到信息。根据上下文,下列对“太阳风”的解释,填入横线处最恰当的一项是( )。A.从太阳日冕层中发出的强大的带电粒子流B.从太阳发出的强大的高速运动的带电粒子流C.从太阳日冕层中发出的强大的高速运动的带电粒子流D.从太阳发出的会引起地球磁场变化的强大的带电子粒子流
A.克拉克发表了一篇杰作《太阳帆船》,公开提出利用太阳光子流形成的太阳风扬帆碧空,实现星际航行。这个设想很有“刺激性”,很鼓舞人。1994年11月2日美国航天航空局为此专门发射了一艘无人驾驶的宇宙飞船,耗费2亿美元,用来对太阳风进行为期3年以上的观测研究。
B.49亿公里)的4倍处,才被星际气体所制止。
C.从太阳日冕层中发出的强大的带电粒子流
B.从太阳发出的强大的高速运动的带电粒子流
C.从太阳日冕层中发出的强大的高速运动的带电粒子流