ACT真題每日一練9.30

　　English Question for Wednesday, September 30th, 2015

　　Tuning In During the Twenties

　　Modern broadcasting began to develop after the First World War. Before 1920, radio was simply a useful way to send electrical signals ashore from a ① ship at sea, or, from one "ham" operator to another.

　　The new technology associated with movies and airplanes was already developing rapidly by the time soldiers started returning from European trenchesin 1918. The vast potential of the airwaves, ②therefore,had scarcely been touched.

　　Then a vice president of Westinghouse,looking for a way to make the transmission of radiosignals more profitable, ③decided on a two-fold strategy. [2] First, he would entice an audience with daily programming of great variety. [3] Second, he would sell this audience the radio receivers necessaryto listen to this entertainment. The ④plan succeeded beyond anyone's expectations.

　　The federal Radio Division in Washington, D.C.,was created to license stations, ⑤because it had no power to regulate them. Broadcasters multiplied wildly, some helping themselves to the more desirable frequencies, others increasing their transmissionpower at will. ⑦Chaos means things were out of control.

　　Yet even in the midst of such anarchy,⑧some commercial possibilities and organizations saw clearly of a medium whose regulation seemed imminent. In 1926, RCA paid the American

　　Telephone & Telegraph Company one million dollars for station WEAF in New York City—and NBC wasborn. ⑨Years later, the Radio Law of 1927 wasenacted. It authorized 10 it's control for licensing and of policing the broadcasters.

　　The RCA executives 11who created the powerful NBC network were right to see that sizable profits would come from this new medium.12 Even in 1930 for example an hour's advertising on nationwide radio to forty-seven cities cost $10,180.

　　Advertising turned broadcasting into an industry,and the untapped potential of the airwaves 13 began to be realized.

　　Choose the best alternative for the underlined part 13.

　　A. NO CHANGE

　　B. begins realizing it.

　　C. began reality.

　　D. began it’s realizing.