第30题: [单项选择]The price of international calls into America is ______. A. higher than that of the calls out of America B. far lower than that of the calls out of America C. is the same as that of the calls out of America as it is decided by the cartel 参考答案:A 答案解析:[听力原文] 23-30 For decades the world’s telephone companies, nearly all state-owned monopolies,