Dick was not old, but he d1. have much hair. His wife Emma has thick (厚的) b2. hair. They have a son. His name is Peter, and he is five years old. One day, Dick was reading a book in his study. Peter looked at his father for a long time and then said to his mother, "Why does Papa h3.so little hair, Mama?" Emma l4. and said, "Haha, he has little hair because he thinks a lot. He’s a very c5. man. " Peter looked at his mother's thick black h6. for a few seconds and then said, "Then I know why you have so much hair. "