D. Listen to the summary of the previous conversation and say the answers out loud by using the cue sentence words that are indicated in each answer.
The esophagus is an important part of the digestive system. It is a long tube that connects the mouth and the stomach. After it leaves the mouth, food enters esophagus through the upper sphincter. From there, a? process called peristalsis pushes the food down the tube. This process happens when muscles in the esophagus squeeze food down. When the food reaches the bottom of the esophagus, it goes to the stomach from the esophagus through lower sphincter. A disease at esophagus is called heart burn. Heart burn happens because the lower sphincter is weak. This let acids from the stomach enter the esophagus and cause a burning feeling. The esophagus can’t handle that because it does not have the special lining or armor that the stomach has. Stomach acids can destroy esophagus because of this.?
1. What two body parts does esophagus connect?
the mouth and stomach
2. Where does food get into esophagus?
3. What does heart burning feel like?
It feels like burning.
[例句]Chicken gizzard contains digestive enzymes and gastric hormone, and increased gastric acid secretion capacity, promote gastric peristalsis.