完型填空
阅读短文，从每小题的四个选项中选出能填入相应空白处的最佳选项。（共10小题，每小题1.5分）
Radio, telephone and television are widely used in the world. When you  _____ the radio, you can listen. But when you use telephone, not only can you listen to others _____  you can chat with them, however, you can’t see the other one at all. Television is_____thanboth of them. People can watch TV and listen to it, ____ you can’t  take part in what you see.
Today, some people are using a type of telephone_____vision-phone. Two persons who are talking can see each other _______  it.
Vision-phones can be of great use when you have something_______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 ______- and ask to read a book right over your vision-phone. You may be able to do the shopping through it, too. Perhaps ______  the near future, vision-phone will come into  wider uses in our_____ life.

A．turn on B．turn off C．turn down D．turn up

A．and B．but too C．but also D．so

A．more better B．much worse C．very good D．much better

A．or B．but C．while D．and

A．calling B．calls C．called D．are called

A．without B．with C．for D．into

A．to show B．showing C．to be shown D．shown

A．bank B．hospital C．park D．library

A．in B．on C．by D．without

A．someday B．every day C．one day D．everyday