完形填空阅读下面短文, 掌握其大意, 然后从各题所给的四个选项(A、B、C和D)中, 选出最佳选项. Human beings have always been trying to conquer(征服) seas and oceans, mountains and the universe, no __1__ whether they are men or women, old or young. In their history, many of them dived deep into the sea, __2__ up high mountains or flew into space in spaceships. Among them, Li Lida, a 16-year-old schoolboy is a fine example. Like __3__ parents, the boy likes swimming very much. He began to learn to __4__ even when he was a baby. He first tried to swim across the Qiongzhou Channel in June, 2000, __5__ he was 12 years old. But he __6__ after swimming for twelve hours. Then on May 17, 2001, his __7__ birthday, he tried again. He __8__ at 6︰02 in the morning from a beach in Xuwen, Guangdong. Three men swam together with him. Li swam quite fast at __9__. Then he slowed down as the wind became stronger __10__ the crossing, he had some food and drinks. By 2 p. m. he could see a high building in Haikou. He felt __11__, but went on swimming. After another two __12__ swimming, he finally reached the other side of the channel at 4 p. m. As the __13__ swimmer to cross the channel, Li was __14__ spoken of by his teachers. He's the __15__ not only of his school, but also of the people in Hainan.

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