阅读下列文章，选出以下3道题的最佳选项。A star is usually someone who has become famous in sports, films, or pop music. One of the stars is the singer Machael Jackson. In the 1980’s, Machael Jackson made a famous record, which quickly became the most popular recording in the history of music. This made him a bright star.Muhammed Ali is one of the bright sports stars in the United States. When he was a young man, he won a gold medal in the Olympic Games as a boxer. Then, he won the first place in another world match. Soon he was known as one of the greatest and most famous boxers in sports history. Everyone knows his name.Like the stars in the sky, a bright star will lose his brightness as time passes. He is loved by millions of people today, but will be forgotten tomorrow.(1) Machael Jackson is famous for ________.