作文是我们培养写作习惯和思维方式的途径，通过不断的写作，我们能够养成良好的写作习惯，通过作文，我们可以不断提升自己的写作能力，以下是职场好文网小编精心为您推荐的纸的作用作文7篇，供大家参考。
纸的作用作文篇1
同学们一定都见过雪，对雪并不是很陌生。有好多同学都十分盼望下雪。那雪有什么作用呢？
首先，雪有净化空气的作用。雪在下降时，可以过滤空气，将一些空气中的灰尘与尘埃带走。所以，雪后的空气是最干净、最清新的。不光如此，寒冬大雪还可以冻死一部分越冬的害虫。雪融化后，还可以供应庄稼所需要的生长养分，保证了庄稼的来年生长。
雪还可以起着保暖的作用。俗话说:冬天麦盖三层被，来年枕着馒头睡。这并不是子虚乌有的，而是有着充分的科学根据。同学们一定都见过睡雪窝的人。雪本身给人的感觉是很凉，但雪的内部却十分暖和。冬天雪下的越厚，地下的庄稼就会越暖和。我想这就是为什么老农把雪比作棉被的原因吧！
雪的。作用并不是只有这些，它还可以入药、可以装饰世界、可以给孩子们带来欢乐等等。
瑞雪，吉祥的雪，作用非常大的雪。这样一说，你是不是对雪又有了新的认识呢？ 冬季，大雪纷飞苍茫无际。人们在观赏玉树琼花之时，往往忽视了雪的作用。雪对人体健康有很多好处。《本草纲目》早有记载，雪水能解毒，治瘟疫。民间有用雪水治疗火烫伤、冻伤的单方。！
经常用雪水洗澡，不仅能增强皮肤与身体的抵抗力，减少疾病，而且能促进血液循环，增强体质。如果长期饮用洁净的雪水，有助益寿延年。这是那些深山老林中长寿老人长寿的“秘诀”之一。
雪为什么有如此奇特的功能呢﹖因为雪水中所含的重水比普通水中重水的数量要少1／4。重水能严重地抑制生物的生命过程。有人作过试验，鱼类在含重水30～50％的水中很快就会死亡。雨雪形成最基本的条件是大气中要有“凝结核”存在，而大气中的尘埃、煤粒、矿物质等固体杂质则是最理想的凝结核。如果空气中水汽、温度等气象要素达到一定条件时，水汽就会在这些凝结核周围凝结成雪花，因而雪花能大量清洗空气中的污染物质。故每当一次大雪过后空气就显得格外清新。
雪的作用就介绍到这里，你们喜欢上它了吗？
以上就是一秘为大家整理的6篇《雪的作用作文》，希望可以启发您的一些写作思路。
纸的作用作文篇2
the world is not only hungry,but also thirsty for water. this may seem strange to you, since nearly 75 % of the earth's surface is covered with water. but about 97% of this huge amount is sea water, or salt water. man can only drink and use the other 3% -- the fresh water that comes from rivers, lakes,underground, and other sources. and we cannot even use all of that, because some of it is in the form of icebergs and glaciers. even worse, some of it has been polluted. however, as things stand today, this small amount of fresh water, which is constantly being replaced by rainfall, is still enough for us. but our need for water is increasing rapidly-- almost day by day. only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on. a limited water supply would have a bad effect on agriculture and industry. let me give you just one small exampie of how necessary water is to industry. did you know that to produce a single ton of steel, it takes about 91, 000 liters of water? we all have to learn how to stop wasting our precious water. one of the first steps we should take is to develop ways of reusing it. experiments have already been done in this field, but only on a small scale. for us, the systems are as important as the spacecraft.
纸的作用作文篇3
with the growing of the populaiton and the polution of rivers and lakes, it is now becoming more and more difficult for us to have acceto drinking water. the shortage of drinking water has becoming a serious problem in many parts of our country. as a student, we should save water in our everyday life so as to reduce the effect of the drinking water shortage. saving water should be the responsibility of every student.
as a student, what can we do in our daily life to save water?
first, we should realize the problem of drinking water shortage. most of the times we waste water because we do not realize the problem. once we have realized the problem we will do all that we can to save water in our life.
second, we can buy things that are water saving such as washing machines which are water saving. in this way , we can use lewater doing the same thing than before thus saving a lot of water.
third, we can make use of waste water. often, waste water are not fully used before they are poured off. we can reuse the water in many ways. for example, the water left after washing vegetables can be used to drop plants or to clean the floor.
in a word, saving water is very important and we should do as much as we can to save water in our everyday life.
纸的作用作文篇4
数学是世界上最基础的学科，它的存在使得一个完整的世界能够变成一块块小小的'图形，又可以还得这个图形变成一串串灵活的数字，还可以使得这些数字变成最简单的符号单位。这就是数学！但是，你知道数学的作用吗？不知道吧！让我们坐上了解数学路上的车子，去探询数学的作用吧。
首先，在了解数学作用的路上，我们最先看到的是数学的概念，数学的概念很简单——是研究数量，结构，变化，空间以及信息等概念的一门学科，什么意思呢？意思就是我们生活中所关乎到数字，空间，图形甚至包含信息传递方面都有着数学的身影，它就像是一位神仙，无所不在，无所不知，使得这个世界多了几分的姿色。
然后我们在路上看到了一个用石头垒起来的碉堡，里面写着一些神奇的语言，仔细察看，发现里面的文字是数学的作用!不过与前面路上数学的作用不同，这里的作用是指数学是人类对事物的抽象结构与模式进行严格描述的一种通用手段，可以应用于现实世界的任何问题。这句话我们看到后，瞬时对数学产生了敬畏之心，原来数学的作用怎么大的！可以应对现实世界的任何问题！那不就像是一台万能电脑能回答所有问题，真是太神奇了。
以上便是数学的作用啦，不知道你有什么看法，一起来分享分享吧。
纸的作用作文篇5
saving water the world is not only hungry,but also thirsty for water. this may seem strange to you, since nearly 75 % of the earth's surface is covered with water. but about 97% of this huge amount is sea water, or salt water. man can only drink and use the other 3% -- the fresh water that comes from rivers, lakes,underground, and other sources. and we cannot even use all of that, because some of it is in the form of icebergs and glaciers. even worse, some of it has been polluted. however, as things stand today, this small amount of fresh water, which is constantly being replaced by rainfall, is still enough for us. but our need for water is increasing rapidly-- almost day by day. only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on. a limited water supply would have a bad effect on agriculture and industry. let me give you just one small exampie of how necessary water is to industry. did you know that to produce a single ton of steel, it takes about 91, 000 liters of water? we all have to learn how to stop wasting our precious water. one of the first steps we should take is to develop ways of reusing it. experiments have already been done in this field, but only on a small scale. for us, the systems are as important as the spacecraft.
纸的作用作文篇6
water is very important to us. if you dont have water for three days, you will die. we can use water for flowers, swimming, washing and many different things. we use it to cook, make electricity, put out fires and so on. we use millions of liters of water every day.
do you know how does the water come to your home? it travels through water pipes. some are long and wide but some are short and narrow. then the water travels through the water pipes to the reservoirs. then it travels through the water pipes to the river and to the special factories that purify the water. when the water is purified, we can drink it. please dont leave garbage in the water on which we line, and keep the water clean.
纸的作用作文篇7
“瑞雪兆丰年”是我国广为流传的谚语，雪后，万里江山都变成了粉妆玉砌的世界，目睹皑皑的白雪，的确是一件赏心悦目的事情。那么，雪有什么作用呢？
雪的作用十分广泛。第一，雪的温度很低，能够冻死一部分地表层越冬的害虫，给农业生产带来好处；第二，一层厚而疏松的积雪慢慢融化后渗入土层深处，能增加土壤中的氮素，容易被农作物吸收利用，供应庄稼生长的需要；第三，在土壤表面盖上一层雪被，可以减少土壤热量的外传，阻挡雪面上寒气的侵入，所以，受雪保护的庄稼可安全越冬；第四，雪还能增强土壤肥力。据测定，每1升雪水里，约含氮化物7.5克。雪水渗入土壤，就等于施了一次氮肥。用雪水喂养家畜家禽、灌溉庄稼都可收到明显的效益；第五，在我国民间，人们爱用陶罐将干净雪储藏，等到炎热的夏季时用它擦洗身子，祛除热和伤疤。如果心火上攻，眼红目赤，用干净的冬雪水洗眼，能清火明目。在寒冬，手脚冻麻木时用积雪搓洗，又能舒筋热血，让人体遍身舒适；第六，一般新雪的密度每立方厘米为0.05-0.10克。所以，地面积雪对音波的反射率极低，能吸收大量音波，能为减少噪音作出贡献；第七，雪花能大量清洗空气中的污染物，所以每当下一次大雪过后空气就显得格外清新。
皑皑的白雪，你的心地是那样纯洁，我们永远忘不了你的美丽，更忘不了你为人类作出的贡献。
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