题目

Twenty-three-year-old Michael Phelps has become a phenomenon (神话) in swimming. At the 2008 Summer Olympic Games, he won eight gold medals. That was more than the whole Australian team could put together. He beat (打败) Mark Spitz’s 1972 record of seven wins in the pool at the one Olympics. Phelps has put his name next to seven world records.    Nine days, 17 games, morning and night he competed and won. He had to beat former (从前的) world record-holders and gold medalists. He had to turn their wins into old news. Michael Phelps started to swim at the age of 5. Guess which s人体的结构都是与其功能相适应的．小肠适于吸收营养物质的特点是内表面有许多 和 ；毛细血管的管壁 ．