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.
2.1 将水利水电工程与生态工程联系起来
目前,水利工程设计基本都是考虑工程水文学,实际上,水利工程的建立对人们的生活也造成了很大的影响。生态的破坏并不是人类发展的初衷,在专业化考虑的基础上,也应适时结合生态学。将生态学与水文学进行有机结合,考虑到各个方面的发展,这样才有利于水利水电工程的长足发展,才不违背人类发展的初衷。生态学为设计者提供了生态用水的理念,提供了自然发展平衡的思想,只有遵从这些理念,水利水电工程的建立才算是真正帮到了人类。因此,需要更好地将工程水文学与生态水文学相互融合,为生态水利工程的设计提供宝贵和事实依据。在生态发展平衡的前提下,谈论水资源问题才不会本末倒置,从而使水利水电工程的设计更加符合生态发展规律。
2.2 合理规划和开发
建立水利水电工程时,要进行合理规划和开发,最重要的是要遵循可持续发展观,长期发展才是最终目的。因此,在水利水电工程的建立中,需要对生态环境进行全面、深入的调查,对库区附近的土地资源、水资源等各项资源的分布、开发情况进行全面了解,根据实际情况考量,最终决定建立的地点、时间和规模,做到生态效益与经济效益的双赢,切不可盲目、大量地开发利用资源,为了眼前的利益而造成资源的浪费和生态的破坏。
2.3 改善生态环境
我们应积极改善生态环境,比如设计净水系统或排水系统,对水资源的破坏降到最小。同时,要有针对性地减弱工程对河流生态的影响,因地制宜。
水——我们的朋友 平达曾说过:“自然界的一切事物中,唯有水最珍贵。”是啊,水是我们的朋友,没有了水,就没有了我们。让我们一起与水做个好朋友吧! 水看见人们不节约用水,伤心地说:我对人类的所作所为感到不满,我为人类做了那么多的贡献,可人类总是滥用我。这样既会导致水源的'流失,又会严重影响生态环境。 在生活中,处处都要用到水。洗菜要用水,洗车要用水,洗澡要用水??,这往往会浪费很多水。其实,请把水龙头开小一点,把废水再次利用,这样我们就能与水做好朋友了。比如:洗菜水可以浇花;洗澡水可以冲马桶??这样,不仅能节约用水,还对别的事物有好处呢! 如果水能这
样一滴一滴的节约起来,虽然不是太多,但是全世界人民都这样做,怎么会没有水呢? 人们可知道,世界上有许多地方水都很少,有些人,因为喝不上水,而死去,他们说:“请他们喝酒,不如请他们喝水。”下雨天,曾是他们最快乐的日子,他们可以用雨水洗澡,还能接水,以后用。他们把水当做奇珍异宝, 每次喝水都要去很远的井里去挑,那井里的水比黄河水还浑浊,比海水还难喝。由此可见,他们是多么爱水啊!如果我们能节约用水,他们的生
活难道会这样吗? 不节约用水,不但会导致水源的流失,还会影响生态环境。 有些工厂既不节约用水,还排放污水放到河流中,这样,水不仅流失了,还会影响生态环境。
the importance of water(一
水的重要性(一)
the importance of water(一)
it is well-known that water is indispensable in existing, in producing and in living. and we should
not waste of a drop of water.
众所周知,在生产和生活中水是必不可少的。我们不应该浪费一滴水。
first, water is definitely important for life. as is known to us all, water is necessary to sup
port life. without water, human beings, animals and plants cannot exist at all.
首先,水对生命是非常重要的。众所周知,水是维持生命所必需的。没有水,人类,动物和植物都不复存在。 second, water is also significant for producing. for one thing, industrial production needs a lot of water, such as using water to generate electricity. for another, agricultural production is also in need of water, especially in irrigation.
巍巍呼高山,汤汤乎流水。飞涧旁这段以诚相待,曲论相和的一瞬定格为千古佳话。知音难求,伯牙奏琴为子期,摔琴亦为子期。这情意如何不令人感动。而今,披肝沥胆的知音再也难觅。只缘人们拥有的纯洁太少。没有水的纯净,没有透明敞开的胸怀,着世间就无真诚可言。何不收其虚伪,展示真诚。
看着这透明如水晶的水,我们那颗被世俗之尘掩埋得太久的心,怎能没有冲见天日呼吸真诚的冲动。拥抱纯真,拥抱真诚,去成就一段马克思恩格斯般高尚的友谊,去结交一位誓友,莫逆,忘年,只要心相知,手相牵,意相同。
水教人真诚,正如叶尖那滴雨露,透明纯洁,折射出太阳的光芒。
天下之柔莫过于水。昼夜不舍的滴坠去赋予水无穷的力量。因渺小而被忽视,因忽视而暗中积攒着力量,直到将万年磐石一点点磨蚀,在世人惊叹的注目中有了穿石的壮举。
明白了持之以恒,竺可桢数十年如一日,观察记录天气情况,终成举世著名的气象学家,懂得了锲而不舍,贝多芬在静寂的世界中,用心灵演奏了命运交响曲的豪壮,有了水刚柔相济的力量,这世上多了几份执着,几份坚持。
水教人执着,正如那穿石得滴水,下坠,下坠,最终拥有成功的欢悦。
水,这就是水,水以其博大,纯净,力量感动着我,而我亦将用博大,纯净和力量去书写自己的人生,我不敢奢求拥有一段辉煌的人生,我只企盼今生无悔。
目前,水利工程产业正在大力发展。在国内,对水利工程的建立在技术上仍有欠缺,高素质的人才也依旧匮乏。但在很大程度上,设计者们已经开始重视生态问题,将生态学与水文学有效结合起来,成为了设计者解决问题的突破口。在国内,我们在充分掌握自然规律、自然界的运行准则的前提下,应借鉴西方国家的先进技术和经验,立足国情自主创新,注重人才的培养,使专业化和先进的技术融入施工作业中;应为水利水电工程的发展储备大量可用人才,在生态平衡的前提下,发展水利水电工程,走科学化、可持续化的发展道路,从而保证水利工程建设与生态环境协调发展,推动中国水利事业的快速发展,更好地造福人类。
Some people think studengts need not do any housework。They think the only thing students need do is to study well。 I don’t think so。 It is good for students to do some housework for three reason。
Firstly,to do some housework can make you independent。You can’t depend on others all your life。So,you should learn to do some housework now。
Secondly, to do some housework can keep you healthy and strong ,some hard housework can be regarded as a kind of physical exercise。
Finally, to do some housework can share your parents’ work 。They must be happy if you say” Have a rest ,and I will do the housework”
So I think it is good for students to do some housework。
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