Saving Water The world is not only hungry,but also thirsty for water。 This may seem strange to you, since nearly 75 % of the earth’s surface is covered with water。
But about 97% of this huge amount is sea water, or salt water。 Man can only drink and use the other 3% — the fresh water that comes from rivers, lakes,underground, and other sources。
And we cannot even use all of that, because some of it is in the form of icebergs and glaciers。 Even worse, some of it has been polluted。
However, as things stand today, this small amount of fresh water, which is constantly being replaced by rainfall, is still enough for us。
But our need for water is increasing rapidly– almost day by day。 Only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on。
A limited water supply would have a bad effect on agriculture and industry。 Let me give you just one small exampie of how necessary water is to industry。
Did you know that to produce a single ton of steel, it takes about 91, 000 liters of water? We all have to learn how to stop wasting our precious water。
One of the first steps we should take is to develop ways of reusing it。 Experiments have already been done in this field, but only on a small scale。
For us, the systems are as important as the spacecraft。 用水 我们的世界不仅饥饿节约，而且因为缺水而干渴。对你来说这可能似乎奇怪：因为我们的地球表面75％由水覆盖着。但是，这巨大的数量中97％是海水、或咸水。
只有剩下3％ 的来自河流、湖泊、地下，和其他来源的淡水供人们饮用、使用。即使如此，这3％的水源我们也不能够完全使用，因为有些淡水是以冰山或冰河的形式存在。更糟糕的是，一些水源已遭受了污染。 然而，尽管按现状看来，这些少量的淡水即使时常转化成雨水的形式，对我们来说，也仍然够用。
可是我们对水的需求却日益迅速增长。我们只有现在采取措施解决这一问 题才能避免未来世界范围内的严重缺乏。限量供水会对农业和工业产生不良的影响。我们举个小小的事例就能证明水对工业的必要性。每生产一吨钢材就要消耗91，000升水，你知道吗? 我们必须杜绝对宝贵水资源的浪费。
我们应该采取的第一步就是要发展水再利用的方法。该领域的实验已在进行，但是仅是小规模地进行。水资源再利用系统的重要性。
Protection of EnvironmentThere are still many problems of environmental protection in recent years。 One of the most serious problems is the serious pollution of air, water and soil。
the polluted air does great harm to people’s health。 The polluted water causes diseases and death。 What is more, vegetation had been greatly reduced with the rapid growth of modern cities。
To protect the environment, governments of many countries have done a lot。 Legislative steps have been introduced to control air pollution, to protect the forest and sea resources and to stop any environmental pollution。
Therefore, governments are playing the most important role in the environmental protection today。In my opinion, to protect environment, the government must take even more concrete measures。
First, it should let people fully realize the importance of environmental protection through education。 Second, much more efforts should be made to put the population planning policy into practice, because more people means more people means more pollution。
Finally, those who destroy the environment intentionally should be severely punished。 We should let them know that destroying environment means destroying mankind themselves。
保护环境目前环保还存在着许多问题。最严重的问题就是空气、水和土壤的严重污染。污染的空气对人类的健康十分有害。污染的水引起疼病，造成死亡。更有甚者，随着现代社会的迅速扩建，植被大大的减少。为了保护环境，各国政府做了大量的工作。采用了立法措施控制大气污染，保护森林资源和海洋资源，制止任何环境污染。
因此，在当今的环保中政府起着最重要的作用。我的看法是，为了保护环境，政府应当采取更具体的措施。首先，应当通过教育的方法使人们充分謒到环境保护的重要性。第二，应更加努力把计划生育政策付诸实施，因为人口多就意味着污染严重。最后，要严惩那些故意破坏环境者。
使他们破坏环境就是毁灭人类自己。
