as we know , water is very important to man, we can’t live without water. the amount of water which is suitable to drink is less and less. but some people don’t care about it .they waste a lot of water in their daily life. even worse, they pour dirty water in to rivers. they throw rubbish into rivers , too. many rivers and lakes are seriously polluted.something must be done to stop the pollution. only in this way can we live happily. if we don’t save water, the last drop of water will be a tear-drop of us.
we know that despite the fact that seventy percent of the earth's surface is covered with water, only a little part of it is fresh water. yet the demand for fresh water in our daily life and in industry seems great. moreover, with the expansion of the population and development of industry, the amount of the fresh water needed will increase even rapidly. it is estimated that if such a trend continues, the fresh water on earth will be exhausted very soon. what is worse, more and more water resources are being polluted, making the water unfit to use.
in addition,we must warn the people of the importance of water and the danger we are facing.for example, in most asian societies where rice is the staple food, the water used after cleaning rice contains various nutrients for plant growth and is an excellent detergent to flush the toilet. furthermore, the intriguing idea of converting the inexhaustible sea water to fresh water supplies will be the ultimate solution.
现代社会是一个充满竞争的社会,同样也是呼吁合作的社会,处理好竞争与合作的关系才可以在社会上立足。竞争是合作的目的,合作是竞争的基础。
正是我们的合作意识使自己变的如此高大,我们只有依靠集体的力量,登上成功的顶峰。使自己有了竞争的实力,并最终胜利下去。
作为学生的我们,摆在我们面前的重要任务是学习,我们同学之间一直存在着竞争与合作,如果我们自己都没有信心,那么我们在学习上就不敢与其他对手对抗竞争,争取理想的成绩,那么我们就是学习上的手将败将,我们的学习不在于单单只想有理想的成绩,而且为了成功,不想在学习上与其他同学交流,不想告诉自己所掌握的知识,那可以摆明是不想互相合作,也是做人的懦夫,一个不想与他人合作的人,就算现在取得优秀的成绩,到头来以后就不能取得这么优秀的成绩了,因为在这个社会中合作是社会的立存,任何一个人都不能掌握所有的知识。
竞争与合作是彼此之间不能分离的,如果没有合作的竞争,只会弄的两方都两败俱伤,合作不竞争,社会就不会向前发展。
竞争与合作是相随相生的,只有共同发展,我们人类才会有所真的发展与进步。
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