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C
B
an area of 247,260 hectares. It's an ideal home to many rare birds. 
        There are a lot of insects and different kinds of plants in the reserve. They provide birds with enough 
food. The red-crowned cranes are the most famous birds in the reserve. Every year, a lot of red-crowned cranes 
stay here in winter. 
        Now the number of birds is getting smaller and smaller. We should take action to help keep the wetlands 
free from pollution and we should also plant trees to keep the ecosystem balanced.
A
C
        The reserve is located in a city in the north of Jiangsu Province, which is famous for its wetlands. It has 
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