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There lived a mother crab(螃蟹) with her baby in a pond. One day, the mother crab left her baby in the pond and went to look for food. There was a large bird just near the pond. He walked by and saw the baby crab. The bird caught the baby crab. The baby crab begged(恳求) the bird to let her go. She said quietly,"I am very small, so you will still be hungry after eating me. I will call my friends here so that you can eat all of us."The bird wanted to eat more crabs, so he let her go. The bird waited a long time, but the baby crab never came back! The baby crab told the story to her mother."Well done! You are a brave and smart girl!"said the mother crab happily.