问答题 《复合题被拆开情况》 One of the three major commercial networks, CBS were organized in 1928【M1】__________which its founder, William Paley, acquired ownership of a group of radio stations.【M2】__________As the Columbia Broadcasting System expanded its operations, soon become 【M3】__________the largest radio network in the United States, it precociously recognized thepotential for the rapidly evolved television broadcasting technology.On July 13th, 1931,【M4】__________it began experimentally television broadcasting in New York, and ten years later【M5】__________began regular black and white week broadcasts over its WCBW TV station 【M6】__________in the same city, that became WCBS TV in November 1946.With Television City【M7】__________in Hollywood, CBS launched the industry’ s first full scaleproduction studio.Today CBS owns television stations, radio stations,and home video production and distribution interests.The CBS Broadcasting Groupcomposed of six divisions: television network, entertainment, 【M8】__________sports, news, local television stations, and radio.For most ofcommercial television history, CBS has been the leader in prime-timeratings, having the highest-rated shows in almost every yearfrom the mid 1950s through the mid 1980s.During the late 1980s, however,CBS lost its top position from NBC.CBS has traditionally been strong in 【M9】__________the TV news area.The network began the first regular TV news program in 1948 with DouglasEdwards as anchor, Journalism legends such as Edward R.Murrowand Walter Cronkite gave CBS its reputation as quality news broadcaster.【M10】__________《问题》：【M1】