题目

How to save a life   The students at No.19 Middle School were having a class. Suddenly, a curtain（窗帘）went on fire and the fire spread quickly. Some students were burned.   Not really! This was a fire drill（消防演习）that took place in the school on April 28.After the drill, experts from the Red Cross gave a lesson to 400 students on how to deal with some injuries, such as burns and bleeding.   May 8 is World Red Cross Day. Let’s learn the steps for how to save lives.   When there is an accident, remember Dr. ABC.   1).___66____ -Check the area to see that you are 已知，则=___________．