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。
相关文章:
Is it good for students to do some housework
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。
这是好学生做一些家务其次,做一些家务能够让你保持健康和强壮,一些硬家务可以看作是一种体育锻炼。
最后,做一些家务可以分享您的父母的工作。他们必须高兴,如果你说“休息一下,我会做家务”因此,我认为这是为学生好做一些家务。
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.
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.
Christmas Day falls on the twenty-fifth of December.It is a very happy day for many boys and girls .Before the term ends in some schools ,the children act a nativity or “birth” play,showing how Jesus was born in a stable.
On the twenty-fourth of December,all children are very excited.Usually they are sent to bed early so that their parents can get the presents ready.The younger children think that Father Christmas will come down the chimney or fireplace ,so they hang up a sock for him to put presents in.The greedy ones even hang up a pillow-case or a sack to try to get more presents.Later that night,Father or Mother will put presents in the sock,and leave others at the side of the bed.
On Christmas morning,the children wake up very early.Some even turn on the light at two o'clock,and most of them are awake by six o'clock although it is not light in England for another hour or two at this time of the year.Children look for their presents,and the young ones play while the dinner is prepared.At about one o'clock in the afternoon,the Christmas dinner is brought in.The turkey or chicken is quickly eaten.Children search in their Christmas pudding for new coins which are hidden in it.The rest of the day is full of games and eating until the happiest of all Christmas hollidays comes to an end.
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。
亲爱的圣诞老公公:
您好!
马上就是圣诞节了,您肯定是忙得不亦乐乎,孩子们都在翘首等待着身穿红棉袄、头戴圣诞帽的您,乘着驯鹿驾的雪橇,背着大包小包的礼物,伴着悠扬的钟声,把欢乐带到人间。
以前每年的圣诞节我都会收到自己喜欢的礼物:玩具熊、漂亮的衣服、电脑、娃娃……应有尽有,所以圣诞节我总是快乐的,因此我坚信您对我特别的厚 爱。世界上有那么多孩子,都在甜蜜的梦中等待着属于自己的礼物,一个夜晚,只有短短几个小时时间,您要在世界各地穿梭,再钻进一个个烟囱中,轻轻地把精致 绚丽的礼物放进那些装满梦的圣诞袜里,可是您一次也没落下我,我真是太爱您了!
一年年长大后我才知道,世界上没有圣诞老人,您只是存在于童话中,而每年往圣诞袜里放礼物的,只是爱我的爸爸和妈妈。但是我一直幼稚的.想:“连UFO、外星人都有可能存在,您也一定是存在的,不然怎么会有这么多关于您的故事呢?”
今年我想要的圣诞礼物有点特别,我真希望它能变成现实。前两天我从电视上看到一个从大别山来的孩子,他得了白血病,他是不幸的,他又是幸运的, 因为医生找到了可以救活他的脐带血!可是他家根本付不出巨额的手术费,他绝望了。我看了以后心里特别难过,求妈妈去电视台给他捐款,妈妈答应了。可是我知 道这些是不够的,所以我许愿让您把我的想法带给每一个小朋友,让我们为生病的小哥哥恢复健康出一点力!
这是我第一次不为自己想得到什么而求您,您一定会帮我实现吧?我又想,对于那些需要帮助的人,每一个伸出援手的人,都应该是帮他们实现愿望的“圣诞老人”,对吗?
祝愿您永远笑口常开!!
© 2022 xuexicn.net,All Rights Reserved.