People often laugh when they see penguins walking. Penguins look very funnywaddle from side to side on their short little legs. However, Adelie penguins 【M1】______can walk 200 kilometers across the Antarctic sea ice to the place they lay 【M2】______their eggs.Penguins are such good swimmers so early explorers thought they were 【M3】______fish. They use their flippers ’fly’ through the water as other birds use their 【M4】______wings to fly through the air. Emperor penguins, the big penguins, 【M5】______can go as fast as 50 kilometers an hour. If Adelie penguin is swimming 【M6】______quickly, it can jump 2 meters out of the water. They do this before they are 【M7】______being chased by leopard seals, which like to eat them.Emperor penguins can hold its breath underwater for twenty minutes. 【M8】______This 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℃ , 【M9】______while on the outside of the group it might be -35℃. When the penguins 【M10】______on the outside get too cold, they move slowly to the inside and others take their place on the outside. 【M9】