Task：Different methods of waste disposal in four cities.
雅思写作小作文柱状图解析及范文：垃圾处理方法
思路解析：
1. 该图的分组原则比较多样：首先可以按照数据的共性来分组：Toronto和Amman一组，它们的landfill最高，Madrid和Kuala Lumpur一组，它们的incineration最高；也可以按照数据本身进行分组：landfill和incineration一组，因为它们总是最普遍，Recycling和Compositing一组，因为它们的数据总是很低。当然最简单的分组模式就是按照地区进行，每个地区为一段。
2. 静态模式下，请注意数据的对比，如数据之间的倍数关系和大小关系。
3. 注意呈现关键数据，如：最大值，最小值和均值等。
参考范文：
The bar chart depicts four types of waste disposal in four cities, namely Toronto, Amman, Madrid and Kuala Lumpur .
Landfill was the most popular method of waste disposal in Toronto and Amman. Toronto used landfill for disposing of about three-quarters of its waste with the remaining quarter split between incineration, recycling and composting. Amman used landfill for disposing of almost half of its waste with most of the rest being incinerated.
Incineration was the most popular method of waste disposal in Madrid and Kuala Lumpur. Kuala Lumpur disposed of more than half its waste by incineration with less than one quarter going for recycling and even less still going for landfill and composting. Recycling was the second least popular method of waste disposal.
No cities disposed of more than 25% of its waste by recycling and in the case of Toronto, it was less than 10%. Composting was the least common method of waste disposal. No cities disposed of more than 10% of its waste by compositing and Amman hardly did any composting.
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