[单项选择]Crocodiles only live where it is hot. They are found in India, Australia, Africa and America. The crocodile is an egg-producing animal. They spend most of their time lying around in the mud or the rivers. The female crocodiles bury their eggs under the mud. The crocodile’s long powerful tail is used when the animal is swimming. It is also an excellent weapon, because it can be swung with great speed and force. One blow will knock down a man or even a big animal at once. The crocodile is very well protected against its enemies by the hard bony plates that cover most of its body, but because of the way its neck is formed, it can not turn its head from side to side and so it can only see in front of itself. The crocodile has its teeth cleaned by another crocodile, which can’t clean its own teeth for it can’t move its tongue up and down. With its rows of terrible points of teeth it seizes its food, which may be a fish, an animal or even a careless man, and then holds it below the water unt
A. left
B. right
C. backwards
D. forwards

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