[以长大后想做什么为题的幼儿园小朋友升旗发言稿]我非常想长大,因为我总觉得长大很美好,它可以改变一个人…… 我想长大,因为长大就可以自由,可以随心所欲。人们都说是童年是快乐的,可我们现在孩子的童年却没有丝毫快乐,有的只是...+阅读
英文版:简要介绍节约用水的原因和具体做法。WHY CONSERVE?Water conservation is the most cost-effective and environmentally sound way to reduce our demand for water. This stretches our supplies farther, and protects places like Mono Lake. For example, the city of Los Angeles has grown by 1 million people since the 1970s, but still uses the same amount of water. Using less water also puts less pressure on our sewage treatment facilities, and uses less energy for water heating.THE WATER AND ENERGY CONNECTION Saving water also saves energy. 6.5% of the energy used in the state of California is for pumping and treating water--in fact, pumping water south (and uphill) in the State Water Project accounts for 2-3% of all the electricity used in the state. And for your personal energy bill, using less hot water saves on water heating. On the flip side, saving energy and using alternative energy saves water--electricity production from fossil fuels and nuclear energy is responsible for 39% of all freshwater withdrawals in the nation.WHAT CAN I DO?There are many effective ways to conserve water in and around your home. Look through this list for ways that will work for you. Many of these tips were gleaned from materials published by the Metropolitan Water District of Southern California (MWD). Indoor savings are based on a family of two adults and one child.In the Bathroom1. Put a plastic bottle or a plastic bag weighted with pebbles and filled with water in your toilet tank. Displacing water in this manner allows you to use less water with each flush. Saves 5 to 10 gallons a day. That's up to 300 gallons a month, even more for large families. Better yet, for even greater savings, replace your water-guzzling five to seven gallon a flush toilet with a one and a half gallon, ultra-low flush model.2. If you're taking a shower, don't waste cold water while waiting for hot water to reach the shower head. Catch that water in a container to use on your outside plants or to flush your toilet. Saves 200 to 300 gallons a month.In the Kitchen1. If you wash dishes by hand--and that's the best way--don't leave the water running for rinsing. If you have two sinks, fill one with rinse water. If you only have one sink, use a spray device or short blasts instead of letting the water run. Saves 200 to 500 gallons a month.2. When washing dishes by hand, use the least amount of detergent possible. This minimizes rinse water needed. Saves 50 to 150 gallons a month.Outside1. Put a layer of mulch around trees and plants. Chunks of bark, peat moss or gravel slows down evaporation. Saves 750 to 1,500 gallons a month. 2. If you have a pool, use a pool cover to cut down on evaporation. It will also keep your pool cleaner and reduce the need to add chemicals. Saves 1,000 gallons a month.3. Water during the cool parts of the day. Early morning is better than dusk since it helps prevent the growth of fungus. Saves 300 gallons.4. Don't water the lawn on windy days. There's too much evaporation. Can waste up to 300 gallons in one watering.你们一定都看过这样一则公益广告:电视画面上有一个水龙头,正在艰难的往外滴着水,滴水的速度越来越慢,最后水就枯竭了。
然后画面上上出现了一双眼睛,从眼中流出了一滴泪水。随之出现的是这样一句话:“如果人类不珍惜水,那么我们能看到的最后一滴水将是我们自己的眼泪。”水是生命之源,假如地球上没有水,那么地球母亲就不会孕育出我们人类的子孙万代。因为最早的原始生命首先是在海洋中孕育形成,逐渐扩展到陆地上。所以说,水是生命的摇篮。
人类的生存和发展也离不开水。因为我们每天要喝水,粮食的生长离不开水,工业生产离不开水。水还是大自然的“空调器”,炎热的夏天,正当人们感到酷暑难耐时,来一场雨该有多痛快呀!走在海边,海风习习,一扫酷热烦躁的情绪;当寒冷的冬季到来时,海水把储存的热量源源不断地送给它周围的陆地……这些都是水的作用。 水,真的不值线吗?节约用水真的不重要吗?全世界的水百分之九十三是咸水,不能喝。
淡水只占有百分之七,而能喝的水只有百分之零点八。全世界五十亿人口,就靠饮用这只占百分之零点八的淡水,看,水多可贵呀!我们国家的水资源虽然非常丰富,但可以用的淡水资源却很少,并且随着工业的发展,水污染成了一个严重的问题,很多工业废水污染得臭不可闻,这是多么可怕的一件事啊!即将到来的3月22日是世界水日。每年的这一天,世界各国都会宣传:大家要爱惜水资源,保护生命之水。
其实,不光在这一天,在我们生命中的每一天,都应该珍惜每一滴水,用实际行动珍爱生命之水! 你们知道节约用水的意义吗?请看一笔帐:一吨水大约可供炼钢150千克,发电每小时一千度,生产化肥500千克,织布220米,磨面粉34袋。“滴水成河”,...
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