题目

A Frenchman went to a small Italian town and was staying with his wife at the best hotel there. One night, he went out for__61__walk alone. It was late and the small street was dark and quiet. Suddenly he felt someone behind him. He turned his head__62___saw an Italian young man__63___quickly walked past him. The man was nearly out of sight __64___ the Frenchman suddenly found that his watch was gone. He thought that it must be the Italian who___65__(take) his watch. He decided to follow him and get back the watch. Soon the Frenchman caught up with the Italian. ___66__of them understo2008年横渡长江比赛在宜昌举行，横渡地长江的宽AB为1200米，我市运动员杨阳参加游泳比赛，因为水流湍急，杨阳实际沿斜线AC方向游泳，到达对岸时偏离直道400米，若他的平均速度为103米/秒，问杨阳横渡长江用了多少时间？