A farm planted levels or floors is called a vertical(垂直的)farm. A skyscraper type building can house a vertical farm. Since the garden is built upwards，rather than outwards，it requires much less space than a conventional farm.
The world is quickly running out of room for conventional farming. Vertical farms could be a key to this situation. An 18story vertical farm could feed as many as 50,000 people，all in an area which is the size of the average city block. Vertical farms in the city could cut down on transportation costs as well. Think about the amount of fuel it takes to transport food from farmland to city. The resources saved would be surprising. Besides saving travel time，food would be delivered in fresher condition and with less damage.
There is a growing concern about the use of pesticides(杀虫剂) in agriculture today. But the vertical farm would be a greenhouse type environment, avoiding the need for a large number of pesticides. Vertical farms can be built in a contained space，therefore they are an excellent solution for living well in an environment far different from our own. Hydroponics(水耕法) could be a big part of vertical gardening. This would reduce the amount of soil needed to grow food. Of course，not all food does well with this type of planting，but there are many crops that actually seem to do better.
In some climates，a lack of sunlight creates a short growing season. The solar power option may not work as well here. The addition of grow lights would make it possible to grow crops in vertical gardens in these areas .In other words，we could grow crops in areas where we never could before.
Vertical farms may just be a concept for now，but they are a concept that will solve many of our problems in the future.
【小题1】According to the passage, a vertical farm .A．is mainly built outwardsB．is dependent on solar powerC．is planted on levels upwardsD．is only an environmental friendly farm【小题2】Compared to the conventional farm, the vertical farm can .A．depend far less on sunlightB．greatly increase the use of soilC．help to protect the limited gardensD．reduce the harmful effect of pesticides【小题3】 It can be learned from the passage that vertical farms .A．have already been put into use B．only use hydroponics to grow food C．need less room than conventional farms D．may increase the transportation costs【小题4】What would be the best title for the passage?A．Vertical farms for our futureB．Ways to deal with future problems C．Vertical farms and green skyscrapersD．Making full use of our limited landC
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(答案→)C
解析：文章讲的是垂直农场的好处，和传统的农场比起来可以节约空间，节省运输的费用，减少害虫的影响更加环保等，是很好的未来农业形式。
【小题1】细节题：从第一段的句子：Since the garden is built upwards，rather than outwards，it requires much less space than a conventional farm.可知垂直农场是向上走的，选C。
【小题2】细节题：从第三段的句子：But the vertical farm would be a greenhouse type environment, avoiding the need for a large number of pesticides.可知垂直的农场和传统的农场比起来可以减少害虫的影响，选D
【小题3】细节题：从第一段的句子：it requires much less space than a conventional farm.可知垂直的农场和传统的农场比起来可以减少空间，选C
【小题4】标题确定题：从全篇文章和最后一段的句子：Vertical farms may just be a concept for now，but they are a concept that will solve many of our problems in the future.可知文章讲的是垂直农场的好处，它可以解决未来的很多问题，Vertical farms for our future 是最恰当的标题，选A。