【正确答案】 C

【答案解析】[听力原文] Sculptures made of sand are transient—they're here today and gone tomorrow. Yet each year, artists spend hours creating elaborate sand sculptures in a summertime competition in Long Beach, California. This year, the competition highlights characters from books and the aim is to raise funds for the local library foundation. Sandis Kondrats is a professional artist who worked with granite and marble in his country. He says, 'In sand, it's more open and more free. I can experiment. Compared with stone or granite, this would take almost a year.' For artists like Bruce Phillips, sand sculpting is a job. 'It's something you can just totally focus on and tune everything else out in the world. And I just quit my job and just did sand sculpture full time,' he said. Like other professionals, Phillips is paid to display his art at promotional events around the world. This competition also draws admirers from the community. Some get tips on sand sculpting and join the competition. It is fun for kids, too. They think it's really cool to make stuff out of sand. (25)Competition organizer Michael Anderson likes the fact that the sculptures are temporary. 'Even though castles made of sand fade into the sea, I think that that's the appeal. It's so transient,' says Anderson. 'It's kind of like life. It's here and then gone, so enjoy what you have now.' The sculptures will be gone, but many of these artists will be back next year, carving new creations in the sand. What is the purpose of this year's competition?