国家地理分级 · Pre-reader
Slither, Snake!
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Vocabulary Tree ANIMALS SNAKES BODY PARTS tail tongue hood head fangs scales Slither, snake!
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A rattlesnake slithers. Slither, snake!
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Rattle! It shakes its tail. The sound means " Look out! "
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A king snake slithers. Slither, snake!
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It flicks its tongue. Its tongue helps it smell.
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