OG详解-OG7 阅读 Q25

Choice B is the best answer because it accurately describes the function of the underlined phrase in the text as a whole. According to the text, advertisers were reluctant to support television in its early days. The underlined phrase then indicates that this reluctance was partly due to the US’s involvement in World War II, which hindered television production. Thus, the underlined phrase identifies a specific reason behind some advertisers’ hesitance to support television.
Choice A is incorrect. The text merely mentions that television was expected to be financed through advertising, as radio was at the time. Nothing in the text compares the origins of radio and television. Choice C is incorrect. The underlined phrase focuses on a reason advertisers were reluctant to support television, not measures taken to convince advertisers to support television. Choice D is incorrect. The underlined phrase focuses on a reason advertisers were reluctant to support television, not what types of television programming were popular.