Hello! I' m John. I usually have a busy but happy weekend. I usually do my home- work first. Then I visit my grandparents on Saturday afternoon. They are very happy to see me. On Sundays I often play football with my friends. Sometimes I go swimming or go shopping. But I can't go out this weekend, because the weather report says it's going to rain. I can't play football in the rain. I can only play the piano at home. This is my weekend. What about you?

工交车上，一位白发老人断然谢绝了年轻人的让座，他说：“你们上班辛苦，我站会儿就好。”这一幕被众多网友纷纷转发点赞。老人之所以被纷纷点赞，是因为他（    ）

数轴上与原点之间的距离小于5的表示整数的点共有 ____ 个.

若由资料可知y对x呈线性相关关系，试求：

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紫丁香是怎样和老师做伴的呢？