关于自然灾害的英语演讲稿
先论述有哪些灾害然后再说怎样防止OK了
我马上要参加一个英语演讲，急需一份演讲稿
1 and less with paper towel, regain8 handkerchief, protect forests, low carbon life.2, each paper are double-sided printing, equivalent to retain half piece originally will be cut off our forests.3, the lights on, switch, pull plug, this is the first step, and personal accomplishment performance; Don't sit elevator climb stairs, save everyone's electricity, in exchange for his health.4, green is not only to the suburb of some flowers and plants, trees at home, also need not same can drive;5, yes, a plastic bag 5 cents, but it caused pollution probably is 50 cents 50 times,6 and the perfect bathroom; not necessarily must have a bath crock Has set up, not every time use; Has been used up, please use water to flush the toilet,7, turn off unused computer programs, reduce the hard disk workload, already save electricity and maintenance of your computer,8, want to avoid car speaking, bike commuters who do not worry about oil prices rose, two not afraid weight rises,9, not necessary a door open, the whole lighting electric human inventions since but 130, before the thousands of years also too well,10, considering the bus for his contribution to the world environment, at least can offset part in their own cars bring superiority,11, please believe, obsessed with PI cao that was just a reverse fathers urges,12, may think so, warming part is due to excessive use of air conditioning \\\\ heating retaliation,13, less as far as possible use one-off toothbrush, disposable plastic bags, disposable cups... Because they use oil manufacturing is one-off,14 and if you know some western ocean museum Chinese production shark fin cans, still can have such a good appetite finning sludge meal;?15, not necessarily annatto and leather can manifest home taste; Suggest using bamboo furniture, because bamboo trees grow faster than,16, actually this kind of environmental protection and energy use solar energy, the easiest way is to put work made during the day,17, excess meat at least three: the animal, to hurt yourself and earth,18, wedding ceremony not you suppress foot 28 years strength throw of face, more not scrape accumulated PK. Now contracted, low carbon only is sweet civilized attachment value;19, think faucet the largest open to vegetables washed dish more clean, that's just psychological effect;20, can seriously argue, clothes saved enough a barrel to wash not because lazy, but to save water and electricity,21 and the child from the baby to preschool, raise tariffs indeed many, some toys, clothes, books with second-hand good,22, if traffic team is too long, or first pooped out, calmly wait now:24, such period check tyre pressure, tolerance is too low or too foot will increase fuel consumption,25 and regular cleaning air conditioning, not only for health, still can preserve less electricity,26 and general vehicle # 93 oil is enough, blindly use # 97 be wasteoil, wound engine,27, with husband into the driver learning how to use less fuel-efficient: nasty cha, the throttle sent, by inertia slide past,28, some people, especially women, bath with off forty or fifty premium, cleanliness also need not so exaggeration,29 and scientifically thrift is fine tradition, Leftovers cools, using keeping-fresh package well and then sent into the fridge, Hot gas not only, still can add refrigerator work frosting, dual use very much power,30, actually air conditioning according to the machine design, waterproof demand to wear it in the coat, it will only reduce heat efficiency, of course, use very much power,31, washing powder and wash out how many ability bubble without necessary relation between, and low foam detergent powder less than high bubble rinse several times, water saving province electricity saves time,32, washing machine open stronger than open file weak gear electricity -saving, still can extend lifespan; machine33, television in standby power consumption for its general under boot power 10% the left and right sides, this account is up to return true not too small,34, listen to music, if only use computer monitors can only dim, or off the;35, if hot water with much, might as well let the water heater always electrify moisturizing, because moisturizing day used electricity, than a box of cool water burn the same temperature is still lower;36, clean equally a car, with the bucket water scrubbing just use faucet rinse water consumption 1\\\/8,37, can put the toilet water tank in the float down 2 centimeters, year can save four cubic water;38, establishing save file, the monthly consumption of water and electricity gas also write record-keeping, accomplish know fairly well,39, buy appliances see energy-saving index, this is the most simple but method,40, experimental proof, fire water in most province breath;41, 10 years ago litter battery can can is ignorant, now is completely irresponsible,42, take regular chopsticks or spoon, is already a tag environmentalists,43, refrigerator storage capacity to account the quantity of food 80% of advisable, put too much or too little, use very much power,44, open short will also is a kind of save - lighting, air conditioning, acoustics, etc.45, nothing to get out, otaku is very use very much power,46, not necessary, try to buy local, seasonal products, transportation and packing more often than producing energy consumption;47, planting trees for your co2 buried sheet, how many, absorb much; row48, cotton, linen clothes more and silk, not only environmental protection, fashion and elegant, durable,49, drying really necessary? Or let your clothes; the sun in!50, the United States has statistics show that: divorce after the per capita resource consumption is higher than before a divorce - 61 percent, let us 42% with marriage protect the earth!
少于2分钟英语演讲稿 有关汶川大地震(中文翻译)
Today, economy is advancing at a fast pace and together with it, the climate. Greenhouse gases is getting more and more and the world ，with its rising temperature, is having a 'fever. Due to the icebergs melting rapidly, the sea level is increasing and who knows when it will drown some of the islands and wipe out civilizations ? Natural disasters are all taking place more often than not. So, is there no help at all? What can we do to slow down the pace of global-warming? First of all, we can use the clean energy which will not pollute the air , the ground or the sea. Some examples are the solar energy, the wind energy and the wave energy. Secondly, we can plant more trees . One way in which the tree can help is that it takes in carbon dioxide , a greenhouse gas, and releases oxygen instead. Isn't this killing two birds with one stone? Lastly, we can reduce the use of cars and walk instead. The cars let off exhaust gases and pollute the earth. If we use our legs instead, we can do our part on saving the earth and even exercise at the same time!
关于环境污染对身体有害的英语演讲稿
目前，全球荒漠化土地面积已经达到3600万平方公里，占陆地总面积的1／4，成为全球生态的“头号杀手”，而且每年仍以5万至7万平方公里的速度在扩展；全世界受荒漠化危害的国家达110多个，10亿人口受到直接威胁这意味着，地球上已有1／4的土地基本失去了人类生存的条件 森林锐减直接导致了全球六大生态危机。
一、绿洲沦为荒漠 目前，全球荒漠化土地面积已经达到3600万平方公里，占陆地总面积的1／4，成为全球生态的“头号杀手”，而且每年仍以5万至7万平方公里的速度在扩展；全世界受荒漠化危害的国家达110多个，10亿人口受到直接威胁。
这意味着，地球上已有1／4的土地基本失去了人类生存的条件。
二、水土大量流失 水土流失是森林破坏导致的最直接最严重的后果之一。
只要地表有1厘米厚的枯枝落叶层，就可以把地表径流减少到裸地的1／4以下，泥沙量减少到裸地的7％以下；林地土壤的渗透力更强，一般为每小时250毫米，超过了一般降水的强度。
一场暴雨，一般可被森林完全吸收。
由于森林的严重破坏，全球水土流失日益加剧。
目前，全世界有l／3的土地受到严重侵蚀，每年约有600多亿吨肥沃的表土流失，其中耕地土壤流失250多亿吨。
全球地力衰退和养分缺乏的耕地面积已达29．9亿公顷，占陆地总面积的23％。
三、干旱缺水严重 森林被誉为“绿色的海洋”、“看不见的绿色水库”。
据测定，每公顷森林可以涵蓄降水约1000立方米，l万公顷森林的蓄水量即相当于1000万立方米库容的水库。
由于森林锐减及水污染，造成了全球性的严重水荒。
目前，60％的大陆面积淡水资源不足，100多个国家严重缺水，其中缺水十分严重的国家达40多个，20多亿人饮用水紧缺。
预计今后30年内，全球约有2／3的人口处于缺水状况。
四、洪涝灾害频发 水灾与旱灾是一对“孪生子”。
破坏森林，必然导致无雨则旱，有雨则涝。
大量事实说明，森林有很强的截留降水、调节径流和减轻涝灾的功能。
森林凭借它庞大的林冠、深厚的枯枝落叶层和发达的根系，能够起到良好的调节降水的作用。
森林的防洪作用主要表现在两个方面：一是截留和蓄存雨水；二是防止江、河、湖、库淤积。
这两个作用削弱后，一遇暴雨必然洪水泛滥。
五、物种纷纷灭绝 科学家分析，一片森林面积减少10％，能继续在森林中生存的物种就将减少一半。
地球上有500万至5000万种生物，其中一半以上在森林中栖息繁衍。
由于全球森林的大量破坏，现有物种的灭绝速度是自然灭绝速度的1000倍。
联合国预测，1990—2000年每年可能失去了1．5万至5万个物种。
目前，地球上的物种已消失了25％，还有20％—30％存在灭绝的危险。
六、温室效应加剧 近代人类大量使用化石燃料，如石油、煤炭、天然气等，使得大气中二氧化碳的浓度在过去110多年里由270毫升／立方米上升到350毫升／立方米，到21世纪中期将达到600毫升／立方米。
而森林吸收二氧化碳并放出氧气，每公顷森林平均每生产10吨干物质，吸收16吨二氧化碳，释放12吨氧气。
从这六大生态危机可以看出，破坏森林的后果是极其严重的。
科学家们断言，假如森林从地球上消失，陆地90％的生物将灭绝；全球90％的淡水将白白流入大海；生物固氮将减少90％；生物放氧将减少60％；许多地区的风速将增加60％至80％；同时将伴生许多生态问题和生产问题，人类将无法生存。
目前，森林锐减导致的一系列生态危机，已经构成了对人类的严重威胁。
土地资源是三大地质资源（矿产资源、水资源、土地资源）之一，是人类生产活动最基本的资源和劳动对象。
人类对土地的利用程度反映了人类文明的发展，但同时也造成对土地资源的直接破坏，这主要表现为不合理垦植引起的水土流失、土地沙漠化、土地次生盐碱化及土壤污染等，而其中水 土流失尤为严重，乃当今世界面临的又一个严重危机。
据估计，世界耕地的表土流失量约为230亿水土流失是指在水流作用下，土壤被侵蚀、搬运和沉淀的整个过程。
在自然状态下，纯粹由自然因素引起的地表侵蚀过程非常缓慢，常与土壤形成过程处于相对平衡状态。
因此坡地还能保持完整。
这种侵蚀称为自然侵蚀，也称为地质侵蚀。
在人类活动影响下，特别是人类严重地破坏了坡地植被后，由自然因素引起的地表土壤破坏和土地物质的移动，流失过程加速，即发生水土流失。
水土流失是我国土地资源遭到破坏的最常见的地质灾害，其中以黄土高原地区最为严重。
我国目前水土流失总的情况是：点上有治理，面上有扩大，治理赶不上破坏。
全国水土流失面积解放初期为17.4亿亩,到1980年约治理6亿亩。
由于治理赶不上破坏，水土流失面积却扩大到22.5亿亩，约占国土总面积的1\\\/6，涉及近千个县。
全国山地丘陵区有坡耕地约4亿亩，其中修梯田约1亿亩，而另外3亿亩坡地正遭受水土流失的危害。
吨\\\/年。
土壤肥力下降，水土流失可使大量肥沃的表层土壤丧失。
据统计，我国每年流失土壤约50亿吨，损失N、P、K元素约4000多万吨。
水库淤积，河床抬高，通航能力降低，洪水泛滥成灾。
威胁工矿交通设施安全。
在高山深谷，水土流失常引起泥石流灾害，危及工矿交通设施安全。
恶化生态环境。
20世纪30～60年代，人们对于水土流失灾害的认识还停留在对土地造成直接经济损失方面，但在60年代以后，开始联系到人类整个环境所受的影响，包括沉淀物的污染，生态环境的恶化等。
水土流失是地表径流在坡地上运动造成的。
各项防治措施的基本原理是：减少坡面径流量，减缓径流速度，提高土壤吸水能力和坡面抗冲能力，并尽可能抬高侵蚀基准面。
在采取防治措施时，应从地表径流形成地段开始，沿径流运动路线，因地制宜，步步设防治理，实行预防和治理相结合，以预防为主；治坡与治沟相结合，以治坡为主；工程措施与生物措施相结合，以生物措施为主。
只有采取各种措施综合治理和集中治理， 持续治理，才能奏效。
急求关于地震的小学英文演讲稿，两分钟。
一定给分哦
我打了好久
earthquake in chinaStrong earthquake hits China A powerful earthquake measuring 7.8 has hit China's southern province of Sichuan, shaking buildings as far away as Beijing, Shanghai and Bangkok. It was not immediately clear if there were any casualties or damage from the tremor which the the US Geological Survey (UGS) earlier put at 7.8. The epicentre of the quake was 93 kilometres north of Chengdu. Wenchuan, which took full force of the quake, has a population of 111,000 people. It is in an ethnic Tibetan area in Aba county which recently saw violent clashes between Tibetans and Chinese authorities. According to some reports there was a second earthquake measuring 3.9 which hit the Beijing district of Tongzhou at roughly the same time. Telephone lines in the affected area are jammed and there are still no reports of casualties. Reports from Thailand say high buildings in Bangkok continued to shake several minutes after the tremors began. We felt continuous shaking for about two or three minutes. All the people in our office are rushing downstairs. We're still feeling slight tremblings, said an office worker in Chengdu. China's tallest building, the Jinmao Tower, and other highrise buildings in Shanghai's financial district were evacuated after tremors were first felt. People were shouting 'get out, get out', so we all ran out of our dorm, said a student surnamed Zhang at a university in nearby Chongqing. A spokesman for the China Earthquake Administration said it was still checking the epicentre and scale of the tremor.以下是与地震有关的词汇： earthquake 地震 shake 震动；摇晃 tremor颤动；震动 temblor [美语] 地震 hit 袭击、打击，使遭受 strike 突然发生；打击 jolt 使颠簸，摇晃 rock 摇，摇动，使振动 roll across 波动，起伏，横摇 rip through 裂开，破开；突进，横撞直闯 damage 损害；损伤 destroy 毁坏，破坏；摧残 shatter 破坏；捣毁；破灭 devastate 蹂躏，破坏；使荒废；毁灭 level 推倒，夷平 flatten 夷为平地 seismological 地震学上的 seismology 地震学 seismograph 地震仪 seismographer 地震学家 aftershock 余震 smaller tremors 小地震 epicenter 震中 magnitude 震级 Richter Scale(1-10) 里氏震级 at a scale of 7.8 on the Richter calculations 里氏7.8级地震 earthquake monitoring 地震监控 tsunami 海啸 rock and mud slides 泥石流 tsunami warning system 海啸预警系统 tidal waves 潮汐波，浪潮 natural disaster 自然灾害 tragedy 灾难 wreckage 残骸 death toll 死亡人数 survivors 幸存者 victims 受灾者 international contributions 国际援助 evacuation 撤离 rescue team 救援小组
