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Snakes

2013-11-13 来源: 类别: 更多范文

Snakes Snake is an animal with a long, legless body covered by dry scales. To move about on land, a snake usually slides on its belly. Many snakes have such a flexible body that they can coil into a ball. The eyes of a snake are covered by clear scales instead of movable eyelids. As a result, its eyes are always open. Snakes have a narrow, forked tongue, which they repeatedly flick out. They use the tongue to bring odors to a special sense organ in the mouth. Snakes belong to a class (group) of animals called reptiles. Reptiles also include crocodiles, lizards, and turtles. Like other reptiles, snakes can maintain a fairly steady body temperature by behavioral means. For example, they raise their body temperature by lying in the sun or lower it by crawling into the shade. In contrast, mammals and birds have internal mechanisms that regulate their body temperature. /wbol/wbAuth/na/pc/co/lr000365.htm/wbol/wbAuth/na/pc/co/lr000365.htm Anaconda Anaconda «AN uh KON duh», is the name of two kinds of large snakes found in tropical South America. Anacondas are also called water boas. One kind may grow as long as 30 feet (9 meters) or more. But all adult anacondas are more than 15 feet (4.6 meters) anaconda, snakes, anacondas, water, snake, prey, large, body, waters, temperature, south, sometimes, reptiles, mammals, long, birds, young, turtles, tropical, tongue, swimming, special, small, size, scales, often, name, meters, live, lie, land, found, foot, feet, eyes
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