由内港媒体专家深入解析外宣及危机公关的传播要点和应对技巧，并通过模拟场景演练，提升企业媒体管理能力。 It Is possible to omit all "the"s. In the second sentence you may opt to preserve the "the" in "all the opposite"(there is a bit more worry in the 2nd sentence with using "just one", and "all another" goes very well with it). I agree that "1" is indefinite https://vodemcasa.com/one-tv-p2p-plano-semestral