２１世纪是人类和平与发展的世纪。对于科学家来说,可以说是一个魔幻的世纪———世界在一个启明时刻非常安静,人们全都在睡梦之中,天底下连一声鸡鸣狗叫也没有……这时候就听见一个声音在轻轻地呼唤:芝麻,芝麻,你开门吧!一道彩虹门由东至西缓缓地打开,立体多维的阳光旋转着到 The 21st century is the century of human peace and development. For scientists, it can be said to be a magical century --- the world was very peaceful at a moment of enlightenment, people were all asleep, and there was no cocking of dogs and dogs ... At this moment, a voice was heard light Lightly call: sesame, sesame, you open it! A rainbow door slowly opened from east to west, three-dimensional multi-dimensional sunlight rotating to