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.

如图是地球公转示意图。2011年6月9日，嫦娥二号卫星完成探月任务时，地球运行在（　　）

    艾比湖是准噶尔盆地最大的湖泊，也是新疆最大咸水湖。博尔塔拉河、精河、奎屯河，分别从西、南、东三个方向注入艾比湖，成为湖水的主要补给来源。6~9月份为入湖河流径流量全年最大时期，占全年径流量的64.6%。该湖曾经像一把保护伞维持着该地区的生态平衡。近几十年来该湖的面积大幅度萎缩，使得附近地区的居民苦不堪言。