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  3. Crocodiles only live where it is hot. They are found in India, Australia, Africa and America. The crocodile is an egg-producing

Crocodiles only live where it is hot. They are found in India, Australia, Africa and America. The crocodile is an egg-producing

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问题     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 until it drown.
    The long-nosed crocodile is shy and timid and because of this, the people of West Africa sometimes catch it for food.
    Many, many centuries ago, there were crocodiles in England. We know this because we have found their bones buried far down in the earth on which London is built. But the Britain of today is too cold for them to live in.
Crocodiles are not in England now because______.
选项 A、they have all been killed
B、they are all hiding under the rivers
C、they are too dangerous
D、the weather does not suit them
答案D
解析
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