关键词：2015年，考研英语二，真题，阅读理解，原题
在2015年的考研英语二中，阅读理解部分涵盖了广泛的主题，包括历史、科技、文化和社会问题。以下是一篇典型的阅读理解原题：
【原题】
As the world's population continues to grow, the need for sustainable food production has become increasingly urgent. One of the most promising solutions to this challenge is vertical farming, a method of growing crops in vertically stacked layers, typically in a skyscraper or a specialized building. This innovative approach offers several advantages over traditional farming practices.
Firstly, vertical farming reduces land use by maximizing the growing space. In a typical farm, only a fraction of the land is actually used for growing crops, with the rest occupied by buildings, roads, and other infrastructure. In contrast, vertical farms can utilize the entire building space for cultivation, significantly increasing the yield per unit of land.
Secondly, vertical farming can be conducted in urban areas, bringing agriculture closer to the consumer. This not only reduces transportation costs but also minimizes the carbon footprint associated with food distribution. Additionally, urban vertical farms can provide fresh produce to city dwellers, reducing the need for long-distance transportation and storage.
Moreover, vertical farming can reduce water consumption and improve water quality. By recirculating water within the system, vertical farms can minimize water usage. Furthermore, the closed-loop system allows for the treatment and recycling of water, ensuring that the water used for irrigation is free of contaminants.
However, the success of vertical farming depends on overcoming certain challenges. One of the main obstacles is the high initial investment required to build and operate such facilities. Another challenge is the energy consumption of vertical farms, which can be substantial due to the need for lighting, climate control, and other technologies.
Despite these challenges, vertical farming has the potential to revolutionize the food production industry and contribute to a more sustainable future. As research and technology continue to advance, the feasibility and efficiency of vertical farming are likely to improve, making it a viable solution to the global food crisis.
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