Rules are everywhere. When you’re reading at the library, playing basketball on the playground or driving on the road, you will have to follow some rules. But do you know about any rules on a plane? If you’re on a plane in America, you may find the following rules. Exit Seat (紧急通道位) Criteria If you are sitting in an exit seat, read the information(信息) below. You must: ◆Be older than 15 years old and healthy enough to give help. ◆Be able to speak, read and understand English well. ◆Be able to find a safe way from th