How much do you know about Albert Einstein?

    Albert Einstein, born on March 14, 1879 in Germany, was a great scientist in the world. ①He was strange because he hated haircuts and new clothes. He believed in peace. All his life, he hated war. However, his most famous idea, E = mc², helped create the world's most dangerous weapon (武器). Many people think he was the smartest person in the world. But Einstein said that he thought like a child with many questions and unusual ideas.

    What did he like?

    Einstein liked learning sailing (帆船运动). He sailed in small boats all his life. He once joked, “Sailing is the sport that takes the least energy!” When Einstein was a child, his mother made him take violin lessons. At first, he didn't like the violin. But then he learned to love music and became a good violinist.

    Later, he said, “②热爱是最好的老师。”

    Why is the sky blue?

    In 1910, Einstein asked a question which many children often ask, “Why is the sky blue?” After his careful research, he answered the question like this: “It's because light is made up of many colors including blue. When light travels to Earth, gas particles (气体微粒) spread the blue light all over the sky.” His answer is true in physics.

材料一：“1462公里，这是从上海到北京的航空距离，然而，从诞生于上海到北京执掌全国政权，***领导中国革命的奋斗历程，走了整整28年，期间，***先后经历了‘日出东方’‘星火燎原’‘力挽狂澜’‘灯塔指引’‘进京赶考’五个关键阶段。”

——新华社特稿《在历史的关节点上》

材料二：“（长征）它不是一般意义上的行军，不是战役，也不是胜利，这是一曲人类求生存的凯歌……长征终于为***和共产党人赢得了中国。在本世纪没有哪一个事件如此地触发了世界的想像，如此深刻地影响着未来。”

——美国作家哈里森．索尔兹伯里

在一个边长为10m的正六边形地面，用边长为50cm的正三角形瓷砖铺满，则需这样的瓷砖____块．

“你们是吃饭长大的，也是读书长大的。”对这句话的正确理解是（    ）。