二十年后我又回到了北京作文【一】
If I were a boy again, I would school myself into a habit of attention; I would let nothing come between me and the subject in hand. I would remember that a good skater never tries to skate in two directions at once.
The habit of attention becomes part of our life, if we begin early enough. I often hear grown up people say, I could not fix my attention on the sermon or book, although I wished to do so, and the reason is, the habit was not formed in youth.
If I were to live my life over again, I would pay more attention to the cultivation of the memory. I would strengthen that faculty by every possible means, and on every possible occasion. It takes a little hard work at first to remember things accurately; but memory soon helps itself, and gives very little trouble. It only needs early cultivation to become a power.
If I were a boy again, I would cultivate courage. Nothing is so mild and gentle as courage, nothing so cruel and pitiless as cowardice, says a wise author.
We too often borrow trouble, and anticipate that may never appear. The fear of ill exceeds the ill we fear. Dangers will arise in any career, but presence of mind will often conquer the worst of them. Be prepared for any fate, and there is no harm to be feared.
二十年后我又回到了北京作文【二】
这20年来，我一直在月球上工作，关于地球的消息我知道的特别少。20年前我离开地球的时候，地球人口飞速的增长，地球环境也遭到了破坏，人类几乎无法在这个地球上再生活下去了。可是20年后的今天，我感觉地球变化最大的就是环境。
当我下飞船后，顿时被眼前的景色惊呆了。原来浑浊的\'小溪，排烟的工厂没有了，灰蒙蒙的天空变透明了，眼前是一片焕然一新的景色。清澈见底的小溪里有许多鱼儿在嬉戏玩耍；蔚蓝的天空有许多鸟儿在追逐；碧绿的草地上，生长着多姿多彩的小花，还有翩翩飞舞的蝴蝶在草丛上玩耍。公路上再也听不到刺耳的喇叭声，取而代之的是美妙的歌声。
我庆幸，我高兴。这些年来人们的环保意识逐渐提高了，我们生活的环境变好了，我们的地球也越来越美好了，我们要热爱那美丽的地球。
