听下面的独白，并从每小题的三个选项中选出一个正确答案，对话或独白听两遍。 1. What was the main reason for people to have dogs in the past? A. To help them work. B. To make money. C. To keep them safe. 2. What do people thi nk of dogs now? A. They regard them as their friends. B. Dogs are their children. C. Dogs help them with everything. 3. What is a dog for a child? A. A smart teacher. B. A playing partner. C. A helpful brother. 4. Why do old people keep dogs? A. They regard dogs as their children. B. Dogs can play with them. C. Dogs make them feel safer.