C

    Johnson is a 10-year-old girl from New York City. She likes staying up late to watch movies on her iPad. Sometimes because she does not have enough sleep, she feels tired at school next morning.

    Just like Johnson, many students feel tired at school in the morning. The kids aged between 6 and 13 need nine to eleven hours of sleep each night, but most of them get less than that.

    What takes the kids' sleep time away? Smart phones and tables (智能手机和平板电脑)! A scientist said, "The kids who have these things in their bedroom often get about half an hour less sleep than those who don't."

    Scientists think a good night's rest is important to students. "The students who sleep enough can learn much better at school than those who don't," another scientist said.

    Johnson's mother said her family decided to make some new rules for her daughter. "we are going to limit(限制) Johnson' screen time and ask her to go to bed earlier than before. We hope these rules can help Johnson to sleep well for school," she said.

    People sometimes like to read stories of dogs very much. They think that dogs are much cleverer than cats, sheep, cows or other animals in their homes.

    One of my close friends, Bob, has a very large police dog named Jack. Every Sunday afternoon, Bob and Jack have a walk in the park nearby. Jack likes these walks very much.

    One Sunday afternoon, I paid a visit to Bob. I stayed there for a long time. Bob and I had much more talk with each other than ever before. Soon it was time for them to take a walk in the park but we forgot that. Jack became worried about it. He walked around the room several times and then sat down in front of me and looked at me. But I still paid no attention(注意)to him. I went on talking with Bob. At last, Jack could not wait any longer. He went out of the room and came back a few minutes later. He sat down in front of me again. But this time, he held my hat in his mouth.

    Suddenly, I understood what Jack meant and my friend understood, too.

    Good afternoon, boys and girls. I'm Li Hong. I'm an English boy. Li Hong is my Chinese name. Look, this is a picture of my family. The tall man is my father. His name is Ken Martin. This is my mother, Sandy Jordan. Who's that little girl? She is my sister, Lucy. Can you find me in the picture? I'm the boy in blue.