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We can't (to imagine) life without TV. Yet it wasn't until the 1950s that television (2)________________(to become) popular. As far as 1879, scientists (3) ____________________ (to look) for ways to add pictures to sound. One of such machines (4) _________________ (to call) 'radiovision'. It used spinning disks (5)_________________(to transmit) pictures.
Then in 1922 Philo Farnsworth thought of (6)_____________ (to use) electricity to transmit pictures. He was very interested in (7) _____________ (to study) electricity. When he was in high school, he started (8) ________________ (to experiment) with the
idea of using electricity to transmit sound and pictures. After he (9) ______________ (to graduate) from college, he was given money for his experiments for one year. By the end of that year first TV pictures (10)_____________________(to produce). In 1930, at the age of 24, he (11)____________________(to grant) the first TV patent.
Today Americans (12) ___________________ (to critisize) for the amount of time they spend in front of the television. But Americans also (13)_________________(to prove) that they are interested not only in entertainment.
As much as Americans like (14) _____________________ (to entertain), they want to be informed. The variety of television programmes (15)_________________(to expand) greatly over the years. Television (16) _________________ (to prove) it can be a wonderful tool for education.
The future of television (17)________________(to limit) by the pace of new technology. No doubt, it will continue to improve. Television (18) __________________ (to link) to computers tied to our home telephones. The television of tomorrow (19)_____________ (to have) voice command. Just think. After all these years that TV sets (20)_________ ___________________ (to talk) to us, we will finally have an opportunity to talk back!