孔子，名____，字____，春秋末年____国人。他是伟大的思想家，____学派的创始人。

    Tina and Vera are sisters. They live in a big city. Tina is not as old____Vera. She is older than her. She thinks living in the city is much____(interesting)than in the countryside. She likes the lights in her city. She thinks the lights in her city are the ____(beautiful) in the world. She enjoys____(read) and she reads____(many)books than Vera.____, Vera dislikes living in the city. She thinks living in the countryside____(be) much better. She often____(visit) her grandparents in the countryside and takes vacations there. She often takes walks____ supper. It makes her____(feel) very relaxed.

PM2.5是指大气中直径小于或等于2.5微米的颗粒物，也称为可吸入肺颗粒物，如图是根据某地某日早7点至晚8点甲、乙两个PM2.5监测点统计的数据（单位：毫克/每立方米）列出的茎叶图，则甲、乙两地浓度的方差较小的是（    ）