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  3. You should spend about 20 minutes on this task. The diagram shows the process of recycling rainwater. Summarise the info

You should spend about 20 minutes on this task. The diagram shows the process of recycling rainwater. Summarise the info

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问题     You should spend about 20 minutes on this task.
    The diagram shows the process of recycling rainwater.
    Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
    Write at least 150 words.
   
选项
答案 The diagram demonstrates how rainwater is recycled. To begin with, rain falls upon a roof and is channeled into the guttering, where it drains into a water filtration system—commonly a net or mesh containing activated carbon, or even plain old charcoal from the barbeque. Once filtered for debris, such as leaves or dead insects, the water travels into a water storage tank, where it is held before treatment. In the water treatment stage, the water is allowed to flow into a contained area where chemicals are added to remove any impurities. Following this, the water is deemed safe for drinking, and is returned to the water system, where it coincidentally ends up in the same house upon which the rain fell in the beginning. Overall, the process of recycling rainwater is not only very simple and efficient, as the diagram shows, but also fundamentally important for a habitable environment.
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