《Let's Talk in English 大家说英语》 2020年 12月刊 第173期
Winter is cold. What do people do to stay warm? They go inside a house. But animals have different ways to survive cold weather. Penguins gather in big groups. When they are close to each other, they stay warm. Polar bears have thick fur to keep their bodies warm. Frogs go to sleep in winter. They hide under rocks or in the ground. Sometimes their bodies freeze! But when the weather gets warm again, they come back to life.
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