导数显变化。一次玩群的p刺激经历
作者:旷漫丽, 发布时间:2026-02-01 12:03:59
In a class room, a girl is sitting on the desk, solving a math quiz. If she cannot solve it in time, a horrible thing is likely to happen. The clock is ticking but the quiz is not likely to be solved. And her mechanical pencil breaks down. However she has to solve the quiz.
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