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Emperor penguins（企鹅）are【小题1】（large）penguins on Earth. Each adult is over a meter tall and weighs up to 40 kilos. Every year in May, mother penguins lay eggs on the coast. Then they will go back to the ocean【小题2】（find）food while the father penguins stay and look after the eggs for the next two months. During this time, 【小题3】eating any food, a father penguin can lose half of his body weight. By August, the mothers return just in time to see their babies come out of eggs.