青少年经常参加体育运动有助于身高的增长，主要原因是

       Look at the picture. Who is the girl? She is my friend. Her name is Alice Black. She is an English girl.

       Alice has a big family. Her grandparents have two daughters and one son — her father. Alice lives with her grandparents, parents, two brothers and one sister. Alice has two dogs — Bobby and Tony. Bobby is black and Tony is white. Alice likes them very much. Alice is a middle school student. She has a good friend at school. Her name is Helen. They are cousins, too.

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