填空题 People often laugh when they see penguins walking. Penguins look very funnywaddle from side to side on their short little legs. However, Adelie penguins 1can walk 200 kilometers across the Antarctic sea ice to the place they lay 2their eggs.Penguins are such good swimmers so early explorers thought they were 3fish. They use their flippers 'fly' through the water as other birds use their 4wings to fly through the air. Emperor penguins, the big penguins, 5can go as fast as 50 kilometers an hour. If Adelie penguin is swimming 6quickly, it can jump 2 meters out of the water. They do this before they are 7being chased by leopard seals, which like to eat them.Emperor penguins can hold its breath underwater for twenty minutes. 8This means they can dive very deep to hunt for food. The deepest dive scientistsknow about is 458 meters. That's nearly half a kilometer!When the male emperor penguins are looking after eggs, they jointogether in tightly groups. In the middle of the group it might be 38℃ , 9while on the outside of the group it might be -35℃. When the penguins 10on the outside get too cold, they move slowly to the inside and others take their place on the outside.