[填空题]

One of the three major commercial networks, CBS were 1. ______
organized in 1928 when its founder William Paley acquired
ownership of a group of radio station. 2. ______
As the Columbia Broadcasting System expanded its
operations, soon become the largest radio network in the United 3. ______
States, it precociously recognized the potential for the rapidly
evolved television broadcasting technology. On July 13th, 1931, 4. ______
it began experimentally television broadcasting in New York, 5. ______
and ten years later began regular black and white week 6. ______
broadcasts over its WCBW TV station in the same city, that 7. ______
became WCBS TV in November 1946. With Television City in
Hollywood, CBS launched the industry’s first full scale
production stud

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