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The friendship between humans and dogs possibly began 14,000 years ago . Perhaps wild dogs became interested in human rubbish, or humans took the puppies of wild dogs and trained them to be obedient pets and helpers . When people choose the parents of dogs , they can create a wonderful variety of dogs with plenty of talents and many different looks . Here are four examples of'a dog's life ' in the human world . A Food sniffer dogs Jacques is one member of the Beag Brigade , a group of beagles that work at international airports in the United States . Their job is to smell and find illegal fruits , vegetables and other foods in gage and mail . These foods sometimes bring insects and diseases which could be dangerous for plants and animals . The beagle smells calmly sits down next to anything that suspicious . The dog's human partner then checks for illegal foods . Why beagles ? They're friendly and cute , so they don't scare people as they sniff through the crowd . More important , beagles have an astonishina nose for food . The Beagi Brigade can find food in luggage and packages 84 % of the time ! B Treated like a queen Some dogs live in luxury . Tiffy , a lovel Maltese , is one of these . Her owner , Nancy Jane Loewy , treats her like a queen . She carefully prepares Tiffy's meals of meat , fish , chicken and a variety of fresh vegetables . Tiffy also eats yoghurt and biscuits after dinner . Loewy's husband has a very good job and her two sons are away at university , so she has the time and money to treat Tiffy extremely well , and she truly enjoys doing it . ' I want to give her the healthiest , most wondet life possible for as long as possible , she says . C. Animal career! Jessie is a whippet that visits very sichk children in hospital. She knows them her love and gives the children a chance to exercise. When they feel down, Jesie makes them happy. Jessie helps patients like young Lukas Parks to stay strong during their time in hospital. There are many different kinds of animals that help people. We train 'service dogs' to help people with physical disabilities. The best known service dogs are guides for the blind. But four - legged friends perform other roles too. They can learn to open and close doors, turn lights on and off, pick up objects from the floor and even pull wheelchairs. Search - and - rescue (SAR) dogs use their amazing noses to find people. Hercules, an Alsatian, can smell tiny clues that people leave wherever they go. These include bacteria, small pieces of clothing and hairs. He has found missing hikers and has searched through rubble after earthquakes and other disasters. Read the text to decide if the sentence is TRUE or FALSE. Wild dogs have existed for approximately 14,000 years. 2 điểm True False 2. Humans are responsible for the different kinds of dogs in the world. 2 điểm True False 3. All airports in the United States use beagles to chek for food. 2 điểm True False 4. Some foods are not safe because they can carry sickness. 2 điểm True False 5. Tiffy eats home - cooked meals, not normal dog food. 2 điểm True False 6. Jessie doesn't help the patients in hospital. 2 điểm True False 7. Service dogs can do simple tasks for people who cannot walk. 2 điểm True False 8. SAR dogs use their sense of smell to find people who are lost. 2 điểm True False

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