阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使
用括号中词语的正确形式填空。
Radio, telephone and television are 1.            (wide) used in the world. When you turn 2.           
the radio, you can listen. But when you use telephone, not only you can listen to others but you can also
talk with them. 3.            , you can't see anything at all. Now television is 4.            better than both of
them. People can watch TV and listen to it, but they can't take part in what they see.
Today, some people are using a new type of telephone 5.            (call) vision-phone (可视电话). With
the vision-phone, two people who are talking can 6.            each other.
Vision-phone can be very 7.           (use) when you have something to show the person whom you are
calling. It may also have other uses in the future. Some day you may be able to call up a library and ask to
read 8.           book over your vision-phone, You may be able to do the shopping through it, too.
Suppose you read about something in the newspaper that you want to buy, you'll go to your vision-phone
and call the shop. The shop assistant will show you the thing that you are 9.           (interest) in. You'll be
10.           to shop all over the town and never leave your home.
Perhaps in the future, vision-phones will come into wide use in our everyday life.

查看答案