Traffic lights are very important for us. I think you know this. But do you know how they were born?
      Garrett A. Morgan was the father of traffic lights. He was an American. His family was very poor. He left school at the age of 14. He was clever. He always looked for better ways to do things. And he liked to make new things.
      At that time, every American wanted to have a car. The streets were full of cars. The traffic was really bad. “Why not put three lights at each corner ? They should be red_,green_,and yellow，” Morgan said , “ Let them tell cars to go or stop.” He made a timer (定时器)to change the lights.
     So we have traffic lights today .

阅读下列材料。

      2013年12月26日，***在纪念***同志诞辰120周年座谈会的谈话中指出，***同志是伟大的马克思主义者，伟大的无产阶级革命家、战略家、理论家，是马克思主义中国化的伟大开拓者，是近代以来中国伟大的爱国者和民族英雄，是党的第一代中央领导集体的核心，是领导中国人民彻底改变自己命运和国家面貌的一代伟人。

材料一  “而朱德***式、方志敏式之有根据地的，有计划地建设政权的，深入土地革命的，扩大人民武装的路线……无疑义地是正确的。”

——《星星之火，可以燎原》

材料二  红军不怕远征难，万水千山只等闲。

——《七律·长征》

材料三 

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