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The world is developing.But more and more wild animals are endangered.To protect the animals,many zoos are built.But is it good or bad?
It is ture that zoos can provide homes and foods for animals,and zoos can stop the cancer.But on the other hand,animals that are kept at the zoos can hardly move at all.And they don`t have families and friends.What`s more,they will lose their living skills if they don`t get food by themselves.So it`s quite serious that they lose freedom.
Building zoos isn`t the best way to protect endangered animals.So if everyone tries his best,we will soon solve this problem.And animals will be our best friends.