水是一切有机体的主要组成部分,全球动植物和40亿人体内含有约11200亿吨水。人类社会依赖水而生存发展。古代,人类对水取利避害,适应水而生存;近代,人类对水兴利除害,兴建工程,开发水利,控制水害;现代,随着社会和生产的发展,地球上可资利用的水日趋短缺,水体受到污染,严重影响人类生存的环境,人类逐渐认识到水是一种重要资源和环境因素,从而在更高的水平上开始对水开展了新的兴利避害活动。
世界气象组织1996年初指出:缺水是全世界城市面临的首要问题,估计到2050年,世界2/3以上的人口将生活在城市,而全球有46%的城市人口缺水,必须平衡社会经济发展和城市淡水供应管理二者之间的关系,进行水资源的储存、输送和管理的大规模工程建设。
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“儿子,不要再看啦,看这么长时间,眼睛很快就会近视的`!”爸爸换完衣服,又苦口婆心地劝我。但我还是克制不住动画片的诱惑继续看,他又提醒了我第三遍、第四遍,我依然置之不理。爸爸说到第五遍时,声音渐渐变得严厉起来:“我最后再提醒你一遍!我现在数到三,如果你还看,我就把它砸了!”
我以为爸爸只是在吓唬我,继续装作没听见。不料,爸爸数到“三”,见我还没有停下来的意思,二话不说,劈手夺过我手中的电脑,走到阳台拿出锤子,几锤子下去电脑就没声了。我顿时惊呆了,爸爸怎么能这么做?那可是我最心爱的东西!我含着眼泪狠狠瞪了一眼爸爸,跳下沙发,带着满腔愤怒和不解离开了客厅,回到自己的房间,“砰”地摔上了门,并上了锁。
大哭了一场后,我渐渐平静了下来,慢慢意识到爸爸确实是为我好,自己确实做得不对。正在这时,爸爸敲门进来向我道歉,说他不应该发那么大的火。我们父子俩总算是和好了。
人人都会有坏情绪,控制不好,坏情绪还会转化成暴怒。这个时候,就需要我们用足够的理智去面对它,让自己尽快冷静下来,想方设法赶跑坏情绪。现在,我们一家人约法三章,今后再遇到坏情绪,大家要先想一想自己做得对不对,冷静下来后再该讲理的讲理,该认错的认错。你别说,这办法还挺管用的,你也不妨试一试啊!
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.
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