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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哈哈!真激动,今年我才11岁,身高1米3的小孩儿,竟然在一次新年做客时当上了“叔叔”,太意外了。你们是不是不敢相信呢?那就听我细细道来。
当天,我和爸爸妈妈去小外婆家拜年。我们到了,当时座位上热闹非凡,这时我听到了奶声奶气的声音对我说道:“叔叔。”咦,谁在叫我?哦,原来是个两三岁的小妹妹啊!我一开始以为她是在和我玩,后来连妈妈都说我成为了叔叔,只能当做是“侄女”在喊了。嘿嘿,其实我这个“叔叔”也当得不赖嘛!每次她不愿意吃饭时,只要用我“超级慈爱的眼神”看着她,侄女就会乖乖地咽下一口饭去。
有时候也让我烦恼,当我正在餐桌上吃饭时,她总是故意将桌子上的零食丢在地上,让我来捡。看着满地的零食,害得我忙得不可开交,一顿饭只吃了一半,就陪她玩了。当然,我们在一起玩得可开心了,一会儿陪她玩手电筒,一会儿你追我赶的,惹得所有亲戚都哈哈大笑,都说我们俩特有缘呢!
回来以后,我问妈妈为什么小妹妹要叫我叔叔,妈妈听了,笑着回答:“侄女的奶奶和我是姐妹,那么她的爸爸就是你的哥哥,如此你不就是她的叔叔了吗?”我听了恍然大悟。
此时此刻很感谢侄女,因为是她给我了那么多的惊喜。在这里我隆重地说:“谢谢!”
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。
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.
哈哈,真激动!我今年11岁,11岁的我却当上了叔叔!这是怎么回事呢?
春节期间,我和爸爸妈妈去外婆家拜年。外婆家人来人往,可真热闹。突然,我听到了一个奶声奶气的声音:“叔叔!”咦,是在叫我吗?我转过头一看,哦,原来是个两三岁的小妹妹啊!嘿,这个小妹妹可真淘气,不是应该叫我哥哥吗?好吧,我就当一回你的叔叔吧!小妹妹不停地喊我“叔叔”,大家都跟着她叫我“叔叔”了。不过,我这个叔叔也当得不赖嘛!每次小妹妹不愿意吃饭,只要我用超级慈爱的眼神看着她,小妹妹就会乖乖地吃下一大口。
可有时候小妹妹也让我烦恼,当我正津津有味地吃饭时,她总是故意将桌子上的零食丢在地上让我来捡。这不,我一顿饭只吃了一半,就只好陪她玩了。当然,我们在一起玩得可开心了,我一会儿陪她玩过家家,一会儿陪她玩捉迷藏,大家看到我们融洽的样子,都说我们特别有缘呢!
从外婆家回来后,我问妈妈为什么小妹妹要叫我“叔叔”,妈妈笑着告诉我:“小妹妹的奶奶和我是姐妹,那么她的爸爸就是你的哥哥,这样你不就是小妹妹的叔叔了吗?”我听了,恍然大悟。
我的这个小侄女真可爱,我这个叔叔是不是也很尽职呢?
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.
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。
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