Aristotle wrote that men come together in cities to live, but stay in them to live the good life. It was the Greeks who invented

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问题     Aristotle wrote that men come together in cities to live, but stay in them to live the good life. It was the Greeks who invented the idea of the city, and urbanity continues as a thriving tradition. But in the first decade of the 21st century, urban life is changing. "Cities are now junctions in the flows of people, information, finance and freight," says Nigel Harris, a professor of development planning. "They’re less and less places where people live and work. "
    The enlargement of the European Union in December in 2002 has given residents of up to 13 new member nations freedom of movement within its borders. At the same time, an additional 13. 5 million immigrants a year will be needed in the EU just to keep a stable ratio between workers and pensioners over the next half century. All this mobility will make Europe’s cities nodes of nomadism, linked to each other by high-speed trains and cheap airline flights. The bustle around airports and train stations will make the crowds in Europe’s great piazza look thin by comparison. Urban designers, with a freshly pricked interest in transience rather than stasis, are even now dreaming up cityscapes that focus on flows of people and fungible uses for buildings.
    Public spaces are due for a revamp. Earlier architects conceived of train stations as single buildings; today’s designers are thinking of them as transit zones that link to the city around them, pouring travelers into bus stations and surrounding shops. In Amsterdam, urban planner Ben van Berkel, codirector of the design firm UN Studio, has developed what he calls Deep Planning Strategy, which inverts the traditional "top down" approach: The creation of a space comes before the flow of people through it. With 3-D modeling and animation, he’s able to look at different population groups use public spaces at different times of the day. He uses the data to design spaces that accommodate mobs at rush hour and sparser crowds at other times.
    The growing mobility of Europe has inspired a debate about the look and feel of urban sprawl. "Up until now, all our cultural heritage has been concentrated in the city center," notes Prof. Heinrich Moding of the German Institute of Urban Affairs. "But we’ve got to imagine how it’s possible to have joyful vibrancy in these outlying parts, so that they’re not just about garages, highways and gasoline tanks. " The designs of new buildings are also changing to anticipate the emerging city as a way station. Buildings have been seen as disconnecting, isolating, defining. But increasingly, the quality of space that’s in demand is movement.
From the second paragraph, we can infer that

选项 A、people belonging to the EU member states can travel freely within borders.
B、immigration to the European Union will benefit the nation’s welfare.
C、the flow of people among European nations will cause troubles to transportation.
D、the mobility of cities in Europe will put urban designers in a dilemma.

答案B

解析 从第二段我们可以得出,[A]欧盟成员国的公民可以在欧盟成员国国界内自由流动。[B]移民对欧盟国家是有利的。[C]欧洲国家间的人口流动将给交通带来麻烦。[D]欧洲城市的流动性将使城市设计者们陷入两难境地。文章第二段第二句话指出,在未来的50年内,欧盟每年将有1,350万移民流入境内,以此来保证在职人员与靠养老金生活的人的比例保持平衡。也就是说,如果没有大量的移民入境的话,与在职人员相比,靠养老金生活的人显得偏多,这样老年人的生活和国家的经济发展就可能出现问题,而移民的加入就可以缓和这些矛盾。因此[B]“移民对欧盟国家是有利的”正确。
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