上面的表格描述了伦敦、巴黎、东京、华盛顿、洛杉矶和北京这六个城市的地下铁交通情况。东京、华盛顿、伦敦这些大城市在20世纪就完成了地铁的建造。伦敦的地铁最早完工，并于1863年开始运行。最近的洛杉矶是在139年后才有了地铁。

　　伦敦的地铁线最长，几乎是巴黎的2倍。东京、华盛顿和洛杉矶的地铁长度差不多，分别为149公里、114公里和123公里。北京的地铁的长度只有50公里。

　　尽管伦敦的地铁线最长，但是东京地铁的载客量却是最大的。东京地铁每年的载客量为1434亿人，而伦敦仅548亿。华盛顿的载客量还没有达到100亿，只有70亿。

北京地铁的载客量只有45亿，在所有城市中最低。

　　五. 图画作文

　　范文1

　　Directions:　　

　　How can we meet the needs of today without diminishing the capacity of future generations to meet theirs? Sustainable development implies a broad view of human welfare, a long term perspective about social development. Write an essay which should cover:

　　1) describing the set of drawings below,

　　2) stating its main idea, and

　　3) giving your comment.

　　You should write about 160-200 words.

　　As can be seen from the above drawings, the father has planted a small tree that grows into a big one and is left to his son to enjoy. Years later, his son sits under the big tree enjoying its shade.

　　In social development, we should not over utilize our natural resources, as in the case of forests. A reasonable use of forests and reforestation are the best choices in the long run. Human beings should plan ahead when it comes to social development. Even though trees are in short demand today, we must still keep the deforestation under control, for we do not want to eliminate all of our forests, which are essential to our existence. Reforestation is another wise practice. We may not fully benefit from planting trees for the time being, but we must continue doing so, since it will benefit later generations. 　　

　　From the point of view of sustainable development, we have the responsibility to ensure that future generations have enough natural resources to use and are not penalized for the shortsightedness of present day decision makers. In other words, we should not use up our natural resources just to meet our own present day needs, while ignoring the future of our planet.　　

　　译文　　

　　画中可见，一位父亲种了一棵小树，这棵小树将长成参天大树，他的儿子将会从中受益。多年以后，他的儿子坐在树下享受着大树带来的阴凉。　　

　　在社会发展中，我们不能过度使用自然资源，比如说森林资源。从长远来说对森林的合理利用和植树造林是最好的选择。人类应当为社会发展做长远的打算。尽管木材在当今社会十分短缺，我们也必须控制滥砍滥伐，因为我们不愿看到森林这一人类赖以生存的基础被彻底用尽。植树造林无疑是又一项英明的举措。我们也许暂时不能够充分享受植树给我们带来的益处，但是我们必须继续将这一举措坚持下去，因为它会使我们的后代受益。　　

　　从可持续发展的角度来看，我们有责任来保障后代有丰富的自然资源可利用，并且不会使他们因今天决策者的目光短浅而受到惩罚。换句话说，我们不应该仅为满足我们自己当前的需要而用尽所有的自然资源，忽视我们后代的需求。

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