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:
Last summer holiday, I went to Beijing for a week. The first day when I took off at the capital airport , it gave me the first feeling was cleanand tidy. The people in Beijing were very friendly. T he second day, I visited Beijing city. I went to the WangFujing Ave , I tasted many famous snacksand Beijing Roast Duck, they are very delicious. I also went to the XinDongfang square, it was a very big shopping mall, it took me about half an hour to walk between two doors. I can saw many famous brands: Cucci, Chanel, Rolex, Seiko, even the new Audi cars. It made me really want to stay in Beijing .The third day I visited the Tian’anmen Square, and it’s very beautiful. And the Chang’an Ave is wide ,straight and clean. The forth day, I went to the Forbidden City. It made me felt the emperor ’ s royal mausoleum was very luxury. The fifth day I went to the Summer Palace, I went boating there. The sixth day, I visited the Great Wall, it’s very terrific, this great architectural complex told us how clever the Chinese people are ! T he last day, I visited the Beijing University ----one of the topest universities of China . There are many famous people were graduated t here.
That’s a happy travel. In the future, I want to visit many countries. This is my dream.
The Plan of travelling
Class 1 Grade 7 Xia Zeyu
The Origin:Suzhou Jiangsu China
The whither:Singapore
Date of travelling:From 20xx/10/1 To 20xx/10/7
Prepering:
1、Get the passport:Please go to the Exit mechanism is the residence of the Public Security Bureau, and get the Passport application form. Put your photo on, then give them 200 yuan.
2、Get the visa:Take your passport and your ID card to the Singapore Embassy in China.
Start:
Walk into the Sultan Palace,This is Singapore Aboriginal history, culture of record. Here was used to be a palace. But now, here is a museum.
About the Emerald Hill Road. It’s just like Chinatown. You can take a walk and go shopping here. Walk into the Lstana. It’s the home to the president of Singapore. People can be here five times a year. Here are amazing plants.
Walk into the Singapore River. Its the only one river in the Singapore. People here called it "The River of Lifes".
About the Botanic Gardens and the Merlion Park it maybe a little funny.
And the most importance:
Marina Bay Sands
It was called "The most expensive hotel in the world". This hotel spends 4,000,000,000 pounds. It has a swimming pool. Visitors can enjoy the beauty of the city for the top of the building. You can even enjoy the city while you are swimming. It is three times the length of the Olympic swimming pool length, is the world's largest outdoor swimming pool.
Sentosa:
It was called “The most beautiful island”. If you go there, and you’ll like it.
At last, there’s a picture here.
© 2022 xuexicn.net,All Rights Reserved.