托福听力tpo12 In paragraph 5, commercial radio programming is best described as the result of 答案解析【小站备考】

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11.In paragraph 5, commercial radio programming is best described as the result of

a financially successful development that enabled large telecommunications firms to weaken their competition.

the desire of electronics and telecommunications companies to make sound technology profitable

a major development in the broadcasting industry that occurred before the 1920s

the cooperation between telecommunications companies and the motion picture industry

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正确答案：B

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B 以commercial radio programming做关键词定位至第三句，说这些公司的合作和竞争创造了industry，D是个有点儿迷惑的选项，注意是公司之间的联系，不是电影业和公司的联系；C没说；B正确，公司的竞争和合作都是为了赚钱，所以B的profitable正确；A的削弱竞争原文没说。

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托福听力official12 In paragraph 5, commercial radio programming is best described as the result of 答案解析

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