摘要
开场白! 梅根在今天下午约了牙医看诊。牙医将检查她的牙齿和口腔。她的牙齿经过牙医清洁之后，感觉很舒服。马克不喜欢牙医，他看过牙医之后，牙齿和牙龈都觉得很痛。他不喜欢疼痛。他每天都刷牙，可是因为他懒惰，所以不会每天用牙线清牙。
Let＇s begin! Megan has a dentist appointment this afternoon. The dentist will check her teeth and mouth. Her teeth feel great after the dentist cleans them. Mark doesn＇t like the dentist. His teeth and qums hurt after he sees the dentist. He doesn＇t like pain. He brushes his teeth every day. But he doesn＇t always floss them because he is lazy.
