Miss Green is very fat. She weighs 100 kg, and she is still gaining weight every month, so she wants to see a doctor. The doctor said, "You need to lose weight. I have a good idea here. " He gave her a book and said, "Read it carefully, eat according to the recipe on page 1 1, and call me two weeks later." Two weeks later, Miss Green came, but she didn't lose weight at all, on the contrary, she became fatter. The doctor was very surprised and asked her, "Did you eat according to the recipe on page 1 1 of that book?" "Yes, doctor." She answered. The next afternoon, the doctor visited Miss Green, and Miss Green was very surprised.

"Miss Green," said the doctor, "why do you eat hamburgers? Aren't you losing weight? "

"Yes, doctor," replied Miss Green, "I ate my lunch according to the recipe, but this is my afternoon tea."