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　　Radio, telephone and television are widely used in the world．When you 　　1　　 the radio, you can listen．But when you use telephone, not only can you listen to others 　　2　　 you can chat with them, however, you can't see the other one at all．Television is 　　3　　 than both of them．People can watch TV and listen to it, 　　4　　 you can't take part in what you see．

　　Today, some people are using a type of telephone 　　5　　 vision-phone．Two persons who are talking can see each other 　　6　　 it．

　　Vision-phones can be of great use when you have something 　　7　　 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 　　8　　 and ask to read a book right over your vision-phone．You may be able to do the shopping through it, too．Perhaps 　　9　　 the near future, vision-phone will come into wider uses in our 　　10　　 life．

完形填空

　　Radio, telephone and television are widely used 　　1　　 the world．When you 　　2　　 the radio, you can listen．But when you use a telephone, you can not only 　　3　　 others but also talk with them, however, you can’t see 　　4　　 at all．Television is much 　　5　　 than either of them．People can watch TV and listen to it．

　　Today some 　　6　　 are using a new type of telephone called visionphone(可视电话)．With it two people who are talking can see 　　7　　．

　　Visionphone can be very 　　8　　 when you have something to show the person whom you are calling．It may also have other uses in the future．Someday you may be to call up a library and ask to 　　9　　 a book right over your visionphone．You may be able to 　　10　　 through it．

　　Suppose(假设)you read about something 　　11　　 the newspaper that you want to buy, you will go to your visionphone and 　　12　　 the shop．The shop assistant will 　　13　　 you the thing that you’re interested in．You’ll 　　14　　 leave your home．

　　Perhaps in the near future, visionphone will come into wide use in our 　　15　　 life．