单选题 Presuppostion is a logical relationship between two sentences in which the truth of the first necessarily follows from the truth of the second, while the falsity of the first follows from the falsity of the second.
【正确答案】 B
【答案解析】解析：考查预设。预设是一个命题以另一个命题为先决条件的意义关系。如果A命题为真，B命题必为真。例如，“麦克的MP3需要修理”预设“麦克有MP3”。