1. Man: many people like junk food. What do you think about it?
Woman: That's right. Mostly junk food are delicious. I like junk food, too.
Man: I think junk food is not good for our health. Some articles say that junk food leads obesity.
Woman: you're right. That's why I only eat junk food twice a month. I don't want to be fat.
What can we learn from the dialogue?