Many large cities are not so beautiful. There is a lot of rubbish on the streets. .
If people want to solve the problem, they should do it right now. In this way, some good things will not be thrown away as waste.
When a car gets too old, it may not run any more. But the metal(金属) that the car was made of is still good. When a glass bottle is empty, it becomes rubbish. But glass can be made into sand and used to build roads. Waste from food can be changed into fertilizers(肥料). It is cheap and safe.
These buildings are made with concrete(混凝土). Now, more and more machines are used to make the buildings. Some day, people will watch films in a beautiful cinema which has been built out of waste. What's more, in the future, buildings, roads and cities may be made from waste.
But so far, building beautiful cities out of waste is only a dream.
A. However, some rubbish can be useful. B. We can use it to make something else. C. Waste can also be used to make buildings. D. They must work out ways of making use of waste. E. We are expecting the dream to come true in the future. |
