How do animals live in the cold winter? Now let me tell you. Some animals start to prepare（准备） their winter food in autumn. When it's very cold，they stay in their homes. Squirrels pick nuts（坚果）. It is warm in their homes in winter. They can live happily in the cold winter.
Many birds can't find food in winter. They fly back in the next spring. Just like swans（天鹅），they fly away from the north before cold winter comes. They can find food in the warm south.
They eat a lot of food in autumn and they don't eat in winter. So they are very hungry （饥饿的） when they wake up in spring. They usually look for food in March or April.
A. Different animals have different ways.
B. Bears，snakes and frogs are such animals.
C. So they fly from north to south in autumn.
D. Some animals sleep for a long time in winter.
E. They can eat the food they prepare in autumn.
