Watch the video-and-answer the following questions. 爱奇艺 当地震发生时，别朝门口走去 If an earthquake hits,don't head for the doorway 信息获取：直接答，加介词 1.What does the USGS recommend 2.What should you avoid if you are inside? 3.What should you do if you are in a crowded area? 4.What should you prepare when you are in an earthquake prone area?Watch the video and answer the following questions. 1. What does the USGS recommend ? 2. What should you avoid if you are inside? 3. What should you do if you are in a crowded area? 4. What should you prepare when you are in an earthquake prone area? 信 息 获 取 ： 直 接 答 ， 加 介 词