摘要：第三节 听短文.回答问题 Welcome to Guide Dogs Training Center, boys and girls! First let me tell you something about guide dogs. In 1918 a doctor and his pet dog walked with a soldier who was blind. The doctor went in the hospital for a short time. When he came out, he saw his pet had guided the soldier on the other side of the hospital yard safely. So he taught a dog to guide a person and it worked out well. Germany helped start a program to teach dogs to be guides. Dorothy, an American woman, went to Germany to find out about the guide dogs. When she came back to the United States, she wrote it for a magazine. Soon more people knew of the guide dogs. The best dogs for the job are clever and fit. It takes more than two years to train a little dog to be a guide dog. When the dog is 14 months old, it learns many instructions. Then the owner and the dog meet, and they practice for four weeks.

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