本期的听力主题是气球，当然，不是小盆友手上玩的那种，而是用于体育竞技的载人气球，各位筒子们对这项运动有多少了解呢？
Hints:
balloonist
capture
imagination
Balloons have been used for sport for about one hundred of years. There are two kinds of sport balloons: gas and hot air. Hot air balloons are safer than gas balloons which may catch fire. Hot air balloons are preferred by most balloonists in the United States because of their safety. They are also cheaper and easier to manage than gas balloons. Despite the ease of operating a balloon, pilots must watch the weather carefully. Sport balloon flights are best early in the morning or late in the afternoon, when the wind is light. Over the years, balloonists have tried unsuccessfully to cross the Atlantic. It wasn't until 1978 that three American balloonists succeeded. It took them just six days to make the trip from their homes in the United States to Paris, France. Their voyage captured the imagination of the whole world.