主題: Penguins feed on animals in the sea

關於試題: Penguins are birds, but they cannot fly. However, they swim very fast. They can swim _____1_____ a speed of more than 15 miles per hour. While swimming, penguins use their feet _____2_____ rudders to help them turn. Penguins feed on animals in the sea, such as fish, _____3_____, and shrimp-like creatures. The penguins' spiky tongues help them hold on to the slippery fish. All penguins have very strong beaks, _____4_____ they also use to defend themselves against enemies. There are 17 different kinds of penguins, but not all live in the ice and snow. For example, the fairy penguin lives along the shores and islands of south..