四、阅读理解（本题有两节，共16小题，每小题2分，共32分）
第一节：阅读下列材料并做后面的题目。从所给的A, B, C, D四个选项中，选出最佳答案。
A
Have you seen big dogs in stores or restaurants and wondered why they were there? Those dogs might have been guide dogs.
People who are blind sometimes use guide dogs called seeing-eyes dogs. These special dogs help people get around. They help them do everyday things. Some people who have hearing problems have hearing-ear dogs. These dogs tell their owners when an alarm clock goes off or when the doorbell rings.
Guide dogs learn to wear something on their backs called a harness. Their owner holds onto it. The dogs learn what words such as “left” and “right” mean. They learn to never take their owner into traffic.
Each guide dog trains for months. Then, it spends one month working with its future owner. At that time ,the owner and dog get to know one another and train together!
Because guide dogs are trained, they are welcome almost anywhere. So, the next time you are out, don’t be surprised if you see a dog. It might just be a guide dog!
46. ______ use guide dogs.
A. People who want dogs to play with B. Babies
C. Anyone wants to D. People who cannot hear or cannot see
47. How long do guide dogs train?______
A. days B. weeks C. months D. They don’t train
48. Guide dogs train with their owner for ______.
A. two days B. one week C. one month D. one year
49. Guide dogs can go _______.
A. almost anywhere B. only stores C. anywhere but restaurants D. only outside places