健健一边吃着花生米,一边和小朋友们又说又笑。突然,一颗花生米掉进了健健的气管,卡得他透不过气来,脸也憋青了。大家顿时被吓得慌了神。邻居周大夫赶快叫来救护车,把健健送进医院。经过医生的及时抢救,花生米取出来了,健健得救了。可是,健健一直不明白:花生米怎么会掉进气管里呢?他跑去问周大夫,周大夫告诉他:“人的喉部有两条管道,一条是食管,一条是气管。这两条管道只隔着一层管壁。而在管道口的地方,也就是喉 Healthy eating peanuts, while talking and laughing with the children. Suddenly, a peanut dropped into a healthy trachea, stuck him thoroughly breath, his face stifled green. Everyone was suddenly scared panic. Neighbor Dr. Zhou quickly called ambulance, the health into the hospital. After the doctor’s timely rescue, peanuts taken out, healthy and saved. However, the health has not understand: how peanuts fall into the trachea? He went to ask Dr. Zhou, Dr. Zhou told him: ”There are two human laryngeal pipeline, one is the esophagus, one is the trachea. The two pipes are separated by a single pipe wall, and at the mouth of the pipe, the throat