2. 外语
  3. 城市一直在破坏它们的周围环境，并常常为之付出代价。科学家发现，一座老城在泥土下掩埋了千百年就是因为砍树过多而被洪水淹没的。此外，城市会给市民带来许多问题。据估计，到2050年时，城镇居民的数量将在人类历史上第一次超过农村人口数量。随后30年内，下几代人的生

城市一直在破坏它们的周围环境，并常常为之付出代价。科学家发现，一座老城在泥土下掩埋了千百年就是因为砍树过多而被洪水淹没的。此外，城市会给市民带来许多问题。据估计，到2050年时，城镇居民的数量将在人类历史上第一次超过农村人口数量。随后30年内，下几代人的生

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问题     城市一直在破坏它们的周围环境，并常常为之付出代价。科学家发现，一座老城在泥土下掩埋了千百年就是因为砍树过多而被洪水淹没的。此外，城市会给市民带来许多问题。据估计，到2050年时，城镇居民的数量将在人类历史上第一次超过农村人口数量。随后30年内，下几代人的生活质量和解决国家内部及国家之间冲突的机会将取决于各国政府是否能找到办法来控制城市的过快发展。
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答案 Cities have been destroying the environment around them and have often paid the price for it. Scientists have noticed that an old city was buried in mud for thousands of years just because it was submerged by the flood produced by deforestation. Furthermore, many problems will be brought to its citizens by cities. It is estimated that in human history the number of population in city will have outnumbered those living in the rural areas for the first time by the year 2050. Within the following 30 years, the life quality of next generations and the chances of solving the internal and external conflicts will depend on whether the methods can be found by governments to control urban development acceleration.
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