A change in which a substance undergoes a change in its physical properties is called a physical change. A physical change is generally reversible. In such a change no new substance is formed.
Technology is the application of scientific knowledge to the practical aims of human life or, as it is sometimes phrased, to the change and manipulation of the human environment.
Questions: 1. Where would this article probably be found? A. a book of fairy tales B. a letter 2. What is this article mainly about? A. The Burlesons raise horses in North Carolina. B.Guide horses wear special shoes. C. Tiny horses can be used as guide animals for blind people. D. Horses have been guiding for thousands of years. 3. Which of these will probably happen in the future? A. Larger horses will also be used as guide horses. B. Other animals, such as cats, will act as guides. C. More blind people will have guide horses. D. Little horses will no longer be trained as guides. 4. What happened before the Burlesons started training many horses as guide an C. They visited Dan Shaw. A. They trained Twinkie. B. They trained guide dogs. D. They started the Guide Horse Foundat 5. What does the Guide Horse Foundation do? A. It matches people who need a guide animal with a guide horse. B. It takes care of guide horses that have been hurt. C. It raises tiny horses for people who want to have them for pets. D. It takes people for rides in carriages in New York City. 6. How long does it take to train a guide horse? A. six months B. one year 7. Look at the chart below. C. a journal D. a magazine Ride in cars and buses. C. 12 years D. 30 years Guide-horse training Go inside buildings Which of these belongs in the empty box? A. eat grass B. climb stairs Ride in elevator C. live 30 years D. have a good eyesight 8. Which word from paragraph 5 means the opposite of chaotic?