阅读理解。 Dogs like living with people. They are very friendly. They can do many things for people. Some dogs help people to look after sheep, other dogs help them to find the lost children. And some of the dogs can help the blind (盲人). There is a kind of dog. His name is Seeing Eye dog. Now we can see this kind of dog all over the world. They are working for the blind. The Seeing Eye dog is strong and easy to train (训练). He helps the blind to walk from place to place. Before a dog becomes a Seeing Eye dog, he must go to a training school for about three months. First, the dog has to learn to sit or stay when he hears the trainer's call. In his next lesson, the dog learns to take his trainer (训练员) across busy streets. The dog has many things to learn. At the end of the training school, he must take tests (测试). When he passes (通过) the test, the Seeing Eye dog will do things by himself. Now he can help the blind people. The new master may be a man, a woman, or even a child. It takes the dog and his blind master about a month to learn to work and live together. 1. We can see the Seeing Eye dog ______. [     ] A. only in the country B. only in small cities C. all over the world D. only in America 2. —What can the Seeing Eye dog do? —______. [     ] A. Help the blind people. B. Find the lost children. C. Look after sheep. D. Do anything. 3. If you want a dog to become a Seeing Eye dog, you must let him ______. [     ] A. go to the street B. go to a middle school C. go to a training school D. go to an evening school 4. First the dog has to learn to sit or stay ______. [     ] A. when he hears the telephone call B. when he hears the doorbell C. when he hears the trainer's call D. when he saw the people 5. —How long will it take the dog and his blind master to learn to work and live together? — ______. [     ] A. One year B. About a month C. Five weeks D. Ten days