(題號39~40)        When winter comes, birds fly south. Most birds cannot live in cold weather. They can seldom find food when the ground is covered with snow, so they fly to warm places.        However, many animals cannot do so. How do they stay alive when winter comes? Some animals hide in holes below the ground, and then they sleep all winter.        Some animals change their colors. For example, wild rabbits turn from summer brown into winter white so that the meat animals cannot easily see them and eat them in the snow. 

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【題組】39.In this reading, which is NOT a way for animals to do in winter?
(A) Eating more.
(B) Changing colors.
(C) Sleeping all winter.
(D) Living under the ground.