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?

Dear Pet,
   Without knowing more about you, it's hard for me to give you some good advice.
   But first, I am sure that you are1 . You said that nobody would care if you left home. What about your2?  And other family members? It seems that you are very3 . You'd better go to a doctor or talk 4 your parents. They will be able to help you.
Second, I'm sure there’s someone else in your class who feels lonely, 5. You never know6other people feel. Try to make friends with your classmates. And you could7a club to meet new people and make friends, too.
   You8find happiness in yourself. So my9advice is to write a list of all the good things about yourself, learn to like yourself, and then10 will see your confidence (信心)and like you, too.
                                                                                                                                                                                  Editor

Kate is very ________. She likes to stay at home and reads books.

要使 $\frac{x}{7}$ 是假分数， $\frac{x}{8}$ 是真分数，x就是（           ）。