先通读下面的短文，然后根据短文内容和所给首字母，在空格内填入一个适当的单词。使短文完整。所填单词必须在答题卡标有题号的横线上完整写出。
Do you like listening to radio? For some people, listening to radio programs has become a part of their d____ lives. How did this start?
Radio began as ship-to-ship and ship-to-land c____ . In the early 1900s, several people showed that radio could do more than that. Dr. Lee De Forest, is w____ known as the father of radio. He made the first p____ radio broadcast. As a fan of opera, De Forest wanted to s____ the musical entertainment into homes. His first try was on January 13,1910, from the Metropolitan Opera House (大都会歌剧院) in New York City. However, the signal was not good enough. Only a few listening stations and a____ in the harbor (港湾) area were able to hear this broadcast. Although there was a lot to do to improve, it s____ what radio could do.
Look at the world around us. Radio broadcasts are e____ . Information now travels at the speed of l____ . Music, news, traffic reports and speeches from world leaders are all on the radio. Can you imagine a world w____ radio?
