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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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。
在40年前,找一个星球谈何容易。但随着科技的发展,对于现在的'人们来说简直是小菜一碟。而我――科学天文系高级研究院院长,世界级天文协会副主席光荣地接受这个伟大的任务。
我和我的助手小鸟雷斯一起登上了我研制出的飞船探索号。哦,忘了告诉你,雷斯其实是被老鹰咬坏了脑袋,我帮它换了一个人脑的小鸟。所以它有一张会说各种语言的嘴,和人的思维。
飞船飞出了大气层,进入了无边无际的太空。我按下了按钮,一束鲜艳的绿光从飞船的几个孔里向四面八方射出。这是搜索光波。它可以超普通光速,每秒可绕太阳转3600万圈。适合用来寻找星球。
“叮咚,”电脑报告,前方草帽星系里有一个可生存行星;宇宙网的东南角射女座大星系里旋螺星系有可生存星球。“唉,先找最近的吧!”我对高智能电脑墙下令,习船全速前进。
那是一个蓝色星球。天上有三个太阳,像一朵姐妹花。地上有清澈的小溪,飞腾的瀑布,美丽的花朵,跟地球一样,却又比地球亮丽、干净。
我和雷斯下了习船,一套多功能航天服穿在我们身上。我的智能手表显示出了:空气和温度、湿度等都良好,可不戴头罩。我碰了一下飞船锁,飞船隐形了。走着,走着,突然飞来一只大鸟,它环绕着我,呜呜地叫着。我戴上翻译耳机,才明白了大鸟说的话:亲爱的外星朋友,欢迎来到潘多拉星球,我的同伴和蓝色土着民族都很友好,你不用怕。我们现在有些孤单,如果你的朋友想搬到这里来住,也没问题!”我听一很高兴,这不仅是一个重大的发现也是一个交友的好时机。
于是,我叫这只飞鸟召唤它的伙伴,跟它们交换食物,开个盛会。借此加深友谊。
我该回去汇报情况了。告别是了那些朋友,我恋恋不舍地踏上飞船,回地球去了。
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.
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。
在星期天的时候,我在看一本科学书,突然,我被一个科学小实验给迷住了。“在纸上画一个五角钱大小的洞,一个一块钱的硬币也能传过去。”“这怎么可能呢?”一元硬币可比五角硬币小,不会穿过去的,但能不能还要用实验来证明。
实验开始了。首先,我准备了一枚一元硬币和一枚五角硬币。我先在纸上画了一个五角硬币大小的洞。接下来,我犯难了,如何将硬币穿过去呢?直接穿过去?试一试吧!结果纸破了,第一次试验宣告失败。不过世上无难事,只要肯登攀,世上哪有事会一次成功呢!我决定再来一次。
第二次实验开始了。这次,我好好思考了一下,突然,我灵机一动,我发现把纸往中间一挤,就形成了一个椭圆形。这样硬币不就能穿过去了吗,我一实验果真如此,我终于成功了!
通过这次试验,我知道了,任何事情都不能轻易相信,要通过实验来证明,不让不能轻易下结论。要不断在“已知”中寻求“未知”以获取更多的东西。
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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