题目

任务型阅读 Farms of the Future Skyscrapers(摩天大楼) are the ultimate symbol of urban life. By 2050, almost 80 percent of the earth's population could live in cities. The human population could increase to 9.1 billion people yet the amount of land available for farming will be the same. Vertical farms, where farmers could grow crops in environmentally friendly skyscrapers, could be the solution. In spite of concerns over high costs, experts want to make these urban farms a reality and use these skyscrapers to grow crops. Vertical farms would have many advantages, experts say. The food would be grown with minimal effects on the environment. Unlike traditional farming, vertical farming would not force animals out of their habitats by taking over large areas of land, nor would it pollute the air with the use of heavy farming equipment.  These have been well recognized. Growing prosperity has led to many people demanding that all foods are available all year round. Indoor farming could produce crops constantly and crops would not suffer from weather-related problems like drought or flooding. In addition, the use of agricultural chemicals for controlling insects would be minimal.  They point out that although crops growing in a tall glass building would get natural sunlight during the day, it wouldn't be enough. The plants closest to the windows would grow much more quickly than the plants further inside. The plants growing away from the windows may not produce as many or as high quality vegetables.  They would need additional light sources. Experts agree that the new farming practices are needed to support the planet's need for more and more food at affordable costs, both to the farmer and to the consumer. Vertical farms may be a small-scale answer, but the best ideas could be yet to come. A. Still, there are some people who are critical of vertical farms. B. That is where vertical farms are often needed for year-round crops. C. So how to meet the increasing food needs of our planet could be a big problem. D. For these reasons, natural light cannot be a workable solution for vertical farms. E. Vertically grown food is grown in environmentally controlled conditions in big cities. F. Those farms would also reduce the cost and negative effects of transporting food over distances. G. They believe that we can increase the food production by changing our thinking from out to up. 答案：【1】C【2】G【3】F【4】A【5】D

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