第9题: [单项选择]This passage is mainly about________. A. how to save people out of the water B. how to give first aid to people who are drowning C. how to mouth-to-mouth breathing D. how to save a child from a river 参考答案:B 答案解析:[解析]通过阅读全文可知,本文在讲如何对落水的人进行急救。故本题答案为B。