根据所听到的短文内容，选择正确答案。 1. Where does Franco work? [     ] A. In a factory. B. In a hospital. C. In an office. 2. How long is his summer holiday every year? [     ] A. 30 days. B. 15 days. C. 7 days. 3. How did he go to San Francisco? [     ] A. By plane. B. By sea. C. By train. 4. What did he see when he arrived at San Francisco? [     ] A. A poster. B. A letter. C. A friend. 5. What did he do in San Francisco? [     ] A. He traveled in the countryside. B. He helped the injured (受伤的) people. C. He talked to the people there.