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Using Garbage as a Fuel
Garbage can be a good fuel to use. The things in garbage do not look 【小题1】 coal, petroleum, or natural gas, but they are chemically similar to these fossil fuels. As we use up our fossil fuel supplies, we might be able to use garbage as 【小题2】 energy source. Burning garbage 【小题3】 ( be) not a new idea. Some cities in Europe and the United States 【小题4】 (burn) garbage for years. The heat that is produced by burning garbage is used to boil water. The steam that is produced is used to make electricity or to heat nearby 【小题5】 ( build). In Paris, France, some power plants burn almost 2 million metric tons of the city’s garbage each year. The amount of energy 【小题6】 (produce) is about the same as would be produced by burning almost a half million barrels of oil!
But there are problems in using garbage as a fuel. Garbage that burns 【小题7】 (easy) , such as food and paper, must be separated from metals, glass, and other materials 【小题8】 do not. Another problem is that burning garbage can pollute the air. Our fossil fuel supplies are 【小题9】 (limit) . Burning garbage might be one kind of energy source that we can use to help meet our energy needs. This method could also reduce the amount of garbage 【小题10】 (pile) up on the earth.
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