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There are many kangaroos in Australia and they are not only in zoos. You can see them everywhere(到处) outside the cities and towns. Kangaroos have very strong legs, so they are very good at jumping. Their tails are very strong too. So when they want to have a rest(休息), they rest on their tails. Kangaroos are also very good at looking after their babies. They eat grass, leaves, roots and some flowering plants. Mother Kangaroos keep their babies safe in their pockets(口袋).