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阅读下面短文, 根据短文内容完成句子。

    Do some colours makes you feel calm while others give you energy? Scientists have studied the connection between colour and mood(心情) for a long time. Many believe that colour can influence our moods.

    Warm, bright colours such as yellow and red are positive colours. They can give people a pleasant feeling. Cool colours such as blue, purple, and green are relaxing colours. They help people experience calm feelings.

    Many public places are decorated(装饰) with certain colours in order to create certain moods. Orange makes people feel hungry, and many restaurants are painted in this colour.

    People use colour in their homes to create moods as well. Blue is a peaceful colour. It helps you rest, so it is a very good colour for a bedroom.

    Colours can also create bad moods. Some types of blue make people feel sad. Red can make people feel angry.

    What is your mood right now? Now look at the colour of the walls round you. Does it match your mood?

阅读理解：在平面直角坐标系xOy中，对于任意两点P₁（x₁，y₁）与P₂（x₂，y₂）的“非常距离”，给出如下定义：

若|x₁﹣x₂|≥|y₁﹣y₂|，则点P₁与点P₂的“非常距离”为|x₁﹣x₂|；

若|x₁﹣x₂|＜|y₁﹣y₂|，则点P₁与点P₂的“非常距离”为|y₁﹣y₂|．

例如：点P₁（1，2），点P₂（3，5），因为|1﹣3|＜|2﹣5|，所以点P₁与点P₂的“非常距离”为|2﹣5|=3，也就是图1中线段P₁Q与线段P₂Q长度的较大值（点Q为垂直于y轴的直线P₁Q与垂直于x轴的直线P₂Q的交点）．