最新版测试报译林牛津必修5Unit2背景素材背景文字水环境污染与健康
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模块五Unit 2 单元测试I. 单词(每空1分,共25 分)1. Our ___________ (顾问) have done some research. In recent __________ (几十年), all kinds of __________ (交通工具) are __________ (消耗) so much ____________ (燃料) that our environment is seriously ____________ (污染). Some governmental administrations ( ) has take some _________/ _________ (措施) to better the condition. For example, the customs ( ) of imported cars has been raised and they are also planting a large number of trees and bush es ( ) to take in ( == ) the harmful gases. A green world is of __________ (重要) to our ___________ (幸存). I still remember when I was young a long clean river __________ (流淌) through our village and beautiful birds _________ (飞) in the sky. We should not only focus on ____________ (经济) development because these two aspects don’t ___________ (冲突) with each other.2. Some _______(贪婪) manufactures are forced to ______________ (关注) both profit and _________ (质量) _____________ (不愿意). According to the law, it is __________ (非法) to produce unsafe food by ____________ (回收利用) the materials which have gone bad. If they break the law, they will be a__________ by the police and sent to prison.II. 词组(每空1分,共35分)1. ____________ (他一到), Professor Lin starts _______________ (一场激烈的辩论)Mr. Chan ______ (介词)the serious situation of _______________________ (环保). From_____________________/ In ______________ / As __________________ (在他看来), ____________________ (工业废物) is making the earth dirtier and dirtier. These factories should not try ____________________________ (逃避他们的责任). Furthermore== ______________ == __________, all kinds of pollutant from agriculture also have a bad effect on our planet. He suggests that factories decrease==____________ (减少) the amount of untreated sewage (未经处理的污水) poured into rivers and try to work out ways ___________________/ approaches _________________ this problem (解决…的方法). It is not reasonable to develop economy ______________ (以…为代价) the earth because it is the home to _____________/ _____________ (种类繁多的) creatures. Besides, we should live a _______________________ (环保) life and __________________/ _______________ (对…负责) our offspring (后代) so that they can also enjoy blue sky and clean air. People are not supposed to ___________/ __________ (用完,耗尽) everything, leaving them nothing to use. And we should also ________________ (尽自己的职责).2. In his speech, he especially== _________________ mentioned some statistics about== ______________/ __________ (介词) / ____________ (介词) deaths caused by pollution.3. The government ________________ (愿意做) whatever it can to improve people’s life. However, the public shouldn’t only ______________/ ____________ (依靠) the government ______ (介词)better life. The statement has caused== __________==___________ == ___________ ==____________ (导致) a national strike (罢工) which has ___________________________ (引起国内外关注). I would like to ______ (建议)another program to the government.III. 语法(每空1分,共60分)1.I never expect there _______ (be) such a quiet place in the noise city.2.______ (judge) from his ______ (excite) news, his friends have found the key to ______ (solve) the problem.3.I would appreciate if __________________ (你打电话)back.4.It’s my mistake because I forget all about ________ (telephone) her.5. Who do you want to get_____________ (fix) the car?6. It took a long time for the connection between body temperature and illness _______ (make).7. I told a lie to my wife after ___________ (question) at the meeting or she would feel anxious about me.8. He spoke in such a high voice _______________ (hear) at the farther end of the room.9. We are searching for a woman who is report _____________ (miss) since last Friday.10. When I entered, I found that my father __________/ ________ (sit/seat) on the sofa, _____ (lose) in a magazine.11. This is a pleasant place ______ (visit).12. He had two handsome sons, both of them _______ (be) doctors.13. It is no longer _____ it was 10 years ago, _____it was in poor condition.14.---What are you going to do tomorrow? ---The film _____ (end) at 6:00 and I ______ (have) dinner after it.15. Water can change into gas by______________ (heat).16. After the operation far from ______ (improve),his condition became worse.17. It was in the shop _______ he met me _______the two girls’ bags were stolen.(从属连词)18. ________ (cure) many patients, the doctor went to enjoy his honeymoon.19. A cook will be fired immediately if he was found _______ (smoke) in the kitchen.20.He and his crew arrived __________ was so-called the new land by the westerners.21. ________ (speak) many times, he still made the same mistake.22. She is not used to ________ (speak) to like that.23. They knew Jane very well, for they had seen her ____ (grow) up from childhood.24. I re-paint the poster ______ (base) on your suggestion.25. The suggestion that he______ (practice) speaking English was reasonable.26. It was surprising that ______ little children can drink_____ (so/ such) much water!27. He was crying _______ (suffer) from the pain in his leg.28. He felt guilty about losing and bad about ________ (not gift) football as you are.29. --It is a long time ______ I last saw you. --- Yes and it will be another month _____ we can meet .30. Be careful when _____ (cross) the road.31. She insisted ________ (take) to Miami for her summer vacation though it would cost much money.32. He hurried to the hall only ______ (find) her ______ (go/ leave).33. Taking the medicine, if _______ (continue) will do good to his health.34. The little boy needed the 20 dollars ________/ ______ (remain/ leave) on his schoolbag to deal with some things ________ (remain, settle).35. He never speaks to me other than __________ (ask) for something.36. I can’t get my car _____ (run) on col d mornings, so I have to try ______ (fill) the radiator with hot water.37. He rushed out of the room, ____ (get) into his car and _____ (start) it , ______ (hope) to get home quickly.38. ______ (realise) that he hadn’t enough money and ______ (not want) to borrow, he decided to sell his watch.39. The bell ___ (indicate) the of class ____ (ring), _______ (interrupt) our heated discussion.40. ________ (时间许可), I’ll stay another week.41. The flight ________ (cancel), we had to walk.42. He _____ (be absent) for no reason at all so we had to put off the meeting.43. On hearing the news, he got up quickly ____ (leave) his lunch ______ (没完成).44. He knocked against the table and sent the bowls ______ (fly) in all directions and then he was sent ______ (sleep) by his wife.。
中国环境污染问题日益严峻
中新社五月二十四日电流经城市的河流百分之九十的河段都受到比较严重的污染,全国百分之七十五的湖泊出现了负营养化的问题……中国环境污染问题日益严峻。
这是国家环保总局科技司副司长罗毅今日在第八届科博会中国循环经济发展高峰会上透露的。
据罗毅介绍,当前中国每年沿海地区的赤潮发生次数比上世纪八十年代超过了三倍以上,酸雨的影响面积已占到国土面积的三分之一,城市的噪音扰民问题严重,全国水土流失面积达到三百五十六万平方公里,森林资源总量不足,生态系统退化。
此外,发达国家上百年中分阶段出现的环境问题,例如水体的黑臭、工业的污染等问题,目前在中国集中在二十多年内。
上世纪九十年代中期,中国经济增长有三分之二是在透支生态环境的基础上实现的,二00三年环境污染和生态破坏造成的损失已经占到GDP的百分之十五左右。
罗毅说,在未来一个时期,中国的经济将处于一个正工业化发展和大众消费时代,对于物质产品和资源的消费量将会高速增长。
根据中国现代化建设三步走的目标,二0二0年全国人口到十四点六亿,经济总量将翻两番,按照目前传统的发展模式以及污染控制的水平,中国的污染负荷要比现在增加五到六倍,要维持现有的环境状况,单位GDP的环境负荷必须下降百分之七十二,中国环境保护工作正面临着更加严峻的挑战。
罗毅指出,当前必须在不断减少单位产出资源消耗的基础上,最大限度的推进资源的循环利用,最大限度的降低污染排放;必须通过制度创新、综合运用法律和行政手段,与市场结合,建立资源节约型、环境友好型的城市。
Unit 2 The environment Section Ⅱ Welcome to the unit & Reading—Language PointsⅠ品句填词1.It’s the glorious____________(职责) for every soldier to defend our country against enemies、答案:duty2。
They are broadening the bridge to speed up the____________(流动) of traffic、答案:flow3。
From mother's love,patience and understanding,I have learned what a huge____________(责任) it is to raise a child、答案:responsibility4.I think so,she is____________(愿意) to play against any tough players、答案:willing5。
Your work has improved in____________(数量) and quality this term、答案:quantityⅡ单句改错1。
As these new products are not selling well,the members of the board have decided to cut back for production、for→on2.As his first novel was published,he was seen to one of the most outstanding writers of his generation、to→as3.Every day large quantities of waste water is poured into rivers without being cleaned、is→are4.It remains to be seen whether operation was successful or not、operation 前加the5。
M5U2 The environmentExercise (2)I.单项选择(15分)从A、B、C、D四个选项中,选出可以填入空白处的最佳选项。
1. You’d better keep the books____________.A.in place B.out of place C.in the place D.at place2._______________ good care of, the patient is getting better day by day.A. TakeB. TakenC. To takeD. Being taken3. This shirt _____________ you very well, but it is __________me.A.fits for, not fit for B.fits, not fit forC.fits, unfit D.fit for, not fit4. There are many reasons for animals __________ but the most important one is the part ________ humans have played.A.die out, that B.dying out, thatC.died away, which D.dying down, which5._______________ his method, Tom was sure that he would pass the examination .A. Being improvedB. ImprovedC. To be improvedD. Having improved6. Is there________ for me in the car?A.a room B.any room C.the room D.rooms7. After the big job was finished, the builder _____ the number of men working for him.A. cut offB. cut down onC. cut upD. cut in8. The rescue team made every _______ to find the missing mountain climber.A. forceB. energyC. effortD. possibility9.Having a trip abroad is certainly good for the old couple, but it remains _____ whet her they will enjoy it.A. to seeB. to be seenC. seeingD. seen10. Where does this road ______?A、lie inB、lead inC、lead to D. lie to11. —Which of those silk shirts do you like most?—________ of them. They are both nice and comfortable to wear.A. BothB. NeitherC. AllD. None12. The son promised to keep his parents _____ of how he was going on with hisstudies at college.A. informB. informingC. informedD. to inform13. Give me a cigarette, please. I have___ them.A. run intoB. run forC. run out ofD. run after14. It is such a problem _________ we all should _________.A.as; pay attention to itB. that; attract our attentionC. as; pay attention toD. as; attract our attention to it15. The soldiers live on an island in the sea far away from land, and every week they_______ theboat for their supplies of fresh water ,vegetables and foods.A. belong toB. cut back onC. rely onD. ask aroundII.单词拼写(根据所给汉语或首字母写出空缺处单词的正确形式,使句子意思完整)(5分)1. We live in an __________________(环境, 气氛)of freedom.2. The fire caused the______________(毁坏)of my books.3. ___________ (有效的) measures should be taken to educate the pupils to obey school rules.4. The two events are _________ (密切的) connected.5. You can’t fully __________ (欣赏) foreign literature in translation.6. To our ____________, Huston Rocket lost another game last week.7. Many fans were _________ at death of the famous actress.8. Nature has provided Shangri-la with endless natural __________.9. The company was e_______________ in 1860.10. Our school has been given some new e____________ for the lab.III.选词填空(从方框中选出恰当的词,并用其适当形式填空)(10分)1. There is no _______________ that you will get through the test.2. How much will you _______________ for operating on her?3. It is sometimes difficult to _______________ useful information as we have so much information to choose from.4. _______________ the rubbish in Beijing is a big problem.5. He _______________ himself to be a successful man.6. In the eighteenth century, Benjamin Franklin conducted _______________ experiments in which he showed what electricity is.7. Just then, I saw some of the hairs on the string stand up. The string was _______________!8. Wearing dark-classes will ________ you ________ the strong sunlight.9. British law says that every new drug must be _______________ at least two different kinds of animals, such as mice or dogs.10. The colorful flags _______________ the beauty of the square.IV.完成句子(根据所给中文意思,完成英文句子,每空一词)(10分)1.要记住,11点前你必须到家。
环保意识新世纪教师的必备素质伴随着人类进入21世纪,环境恶化问题这个现代化进程中的幽灵,已成为人类发展的最大障碍。
水资源的严重枯竭、土壤沙漠化程度的加深,沙尘暴的频繁肆虐,向大气中过度排放有害气体而引起的温室效应,其他如臭氧层空洞的扩大、旱涝灾害的日益加剧、生物物种的迅速减少……这些如影随形的恶魔已严重威胁着全人类的生存,我们的惟一家园——地球将要毁灭在自己手里!但是全人类的生态环境保护意识却是相当淡薄:一次性筷子和饭盒仍大行其道,铺天盖地的白色污染有增无减,水电资源的浪费触目惊心,更不用说滚滚的黑烟遮蔽了蓝天,含有多种有害物质的工业废水污染了有限的可饮用水源……已经相当脆弱的生态环境频频告急,但我们却孰视无睹!人类的大多数还没有意识到生态环境保护的紧迫性和重要性,环保教育迫在眉睫!如何解决环境污染问题,培养每一个人的环境保护意识已经成为新世纪教育的重要组成部分,环保教育要从孩子抓起,从课堂抓起。
这无疑是新世纪教师责无旁贷的神圣使命和责任,环保意识和知识自然应成为21世纪教师的必备素质。
中国古人说过:“天下兴亡,匹夫有责。
”那时的天下仅仅局限于本国和本民族,而今的天下显然不能与过去同日而语。
环境危机已经涉及到地球上生存的每一个生命个体,环境保护问题已同每个国家、每个民族的命运息息相关,成为无法回避的问题。
新世纪的教师就需要站在全人类生存和发展的高度,树立环保意识,做一名维护人类社会健康和可持续发展的环保卫士和坚定的环保教育工作者。
教师不仅自身要积极参与到环境保护中去,更要用切实的行动、科学的理论潜移默化地影响、指导、教育学生提高环保意识。
通过环保意识教育,能够使学生从小认识到环保问题是关系地球和全人类生死存亡的严重问题,从而使学生能自觉地把自身个体与整个世界紧密联系起来,树立全球意识和全球观念。
这种意识更使学生认识到人的最高价值是对人类共同利益作出贡献,为全人类的根本利益而奋斗是崇高的使命,学会自觉地关爱身边的环境,关爱我们共同的家园。
九成汽车“毒气”超标环境污染直接致病九成汽车“毒气”超标中国室内装饰协会室内空气监测中心近期对200辆汽车进行了检测,结果发现,若参照室内空气质量标准,有近九成的汽车都存在车内空气甲醛或苯含量超标问题,而且大部分车辆甲醛超标都在五六倍以上,其中新车车内的空气质量最差。
国外一项研究测试发现,新车出厂后,车内有害气体浓度很高,挥发时间可持续6个月以上,从而使在此间开车的驾驶员身体不适,甚至酿成车祸。
根据上述调查结果,室内环境监测中心发布了今年第一号室内环境消费警示:警惕新车内空气污染。
环境污染直接致病据中国装饰协会室内空气监测中心宋广生主任介绍,车内空气超标甲醛多是来自座椅沙发垫、车顶装饰等装饰材料,而苯则来自胶粘剂。
此外,发动机产生的一氧化碳、汽油味,车用空调蒸发器长时间不清洗护理所产生的胺、烟碱等有害物质弥漫在车内狭小的空间里,也导致车内空气质量差。
这些有害物质有的可能致癌,有的则可能会对神经系统、免疫系统、内分泌系统以及生殖系统产生影响。
特别是开空调的时候车窗紧闭,空气不能及时流通。
大约有65%的司机驾车时会出现头晕、困倦、咳嗽等现象,导致司机感到压抑、烦躁、注意力无法集中,甚至导致交通事故的发生。
这些症状统称为驾车综合症。
最值得注意的是,由驾车综合症所引发的交通事故远比长时间疲劳驾驶、酒后驾驶引发的事故率要高得多。
车内环境亟待关注与汽车尾气造成的大气环境污染相比,汽车内部环境污染对人体健康危害更具有特殊性。
据法律界人士介绍,因汽车内环境造成驾驶者或乘客生命危险的案例时有发生,并且这类型的案例数目呈上升趋势。
而目前,汽车空气质量检测的相关标准还没有,车内环境在法律上存在空缺,律师在辩护时无法可依。
Unit 2 The environment Section Ⅲ Word power,Task & Project错误!品句填词1.____________(给……留下印象) by its beauty,Oscar felt a strong desire to find its owner、答案:Impressed2。
The criminal,as well as some relevant people,was ____________(逮捕) by the police yesterday、答案:arrested3.The boy was found seated on a bench,completely ____________(专心) in a novel、答案:absorbed4。
His old car____________(消耗) much gasoline、答案:consumed5.—Can I help you with it?—I____________(感激) your offer,but I can manage it myself、答案:appreciate错误!单句改错1.I will appreciate you if you can give me a lift to the station、第一个you→it2。
Absorbing in the game,he didn't notice me enter the room、Absorbing_→Absorbed3.There are many things to think over in regard of this project、of→to4。
Advertising can influence consumer moods,which,in turn,can influence their reactions to products、consumer→consumers’5。
U2M5 单元小测试一、重点单词1争论,辩论n./vi._____________________ 2. 下蛋,摆放_______________________vt..3. 有益的,有利的_____________________adj.4. 稳定的_____________________adj.5. 荒唐的_____________________ adj.6. 减少_______________________vt./vi.7. 全国范围地______________________ adv. 8. 海关________________________n.9. 状态,状况_______________________n. 12接近,靠近.______________________vt./vi.13. 到达者________________________n. 14. 非法地_____________________adv.15. 各种各样的______________________ adj. 16. 打猎________________________vt.17. 关于,涉及___________________prep. 18. 保护,保存______________________n.19. 飞快的_______________________adj. 关心,关注_____________________n.二、重点短语1. 另外______________________2. 扫除,消灭__________________________3. 减少,缩减______________________4. 依靠,依赖___________________________5. 自由发言______________________6. 导致__________________________7. 记住_______________________ 8. 禁止做…_________________________9. 用完,耗尽________________________ 10. 在进行中__________________________11. 以..的形式_______________________ 12. 集中,关注_________________________13. 乐意做______________________ 14. 用…装备__________________________15. 受益于_______________________ 16. 流经,流过_________________________17. 把某人视为________________________ 18非政府组织___________________________19. 在进行中_____________________ 的关键________________________三、完形填空:10Good morning, ladies and gentlemen. Thank you, Mr Lin. That was 1______ interesting speech. It is obvious _2______ you are very concerned about the present situation of our environment. __3____ an economist, I’m often seen as 4_______ against the environment. When people think of factories, they think of clouds of dirty smoke _5____ a pipe pouring chemical waste into a river. They think of greedy businessmen hiding from their responsibilities to the environment and only thinking about_6______. People often think that economicdevelopment is 7_____ for the environment, but this does not have to be true.8______ I’m here to say is that having worked side by side _9_____ many environmentalists, I know that a healthy environment and a stable economy should be possible at the same time. 10________ are many factories and industries which control the amount of pollution they produce, and are very careful to spend money repairing any damage they cause. The people running these factories are very concerned about the environment. We need to stop thinking of companies and money as the enemy!四、选择151._______,I find many people willing to pay slightly higher prices for things_____ are environmentally friendly.A. Asking around; whereB. Asking around; thatC. asked around; whereD. Asked around; that2. Many students stand on the playground _________ the wonderful basketball match after supper.A. watchB. watchingC. watchedD. being watched3 Rapid agriculture and industrial development plus huge population growth ____ brought about many serious social problems.A. haveB. hasC. isD. are4 Two special government projects are also _____ to protect the river.A. under wayB. on the wayC. around the cornerD. approaching7. With all my attention_______ on this exam, I did a good job.A .fixing B. focused C. focusing D. paying6______, many people have recognized the importance of protecting the Yangtze River.A. UnluckilyB. ThankfullyC. To our great disappointmentD. Sadly7 _______ poor, many young children from peasants’ families stop going to school.A. AsB. BecauseC. BeingD. For8The man _______ over there was injured in a car accident yesterday.A. operate onB. being operated onC. to operate onD. being operated9 Yet ever since then, people at home and abroad have _______ different opinions about the policy.A. risenB. voicedC. announcedD. proven10.he traveler _______ his coat on a stone and _______ down to have a rest.A. lay; layB. laid; layC. laid; laidD. lied; lied11 The old farmer had his leg _______ but he had his tractors _______ day and night.A. hurting; workingB. hurting; workedC. hurt; workingD. hurt; worked12 The computer centre, ______ last year, is very popular among the students in this school.A. openB. openingC. having openedD. opened13.hen she went in, he was lying on the floor _______ at the ceiling.A. was staringB. staringC. to stareD. stared14. was so careless that he left the work half ______ and went to the cinema.A. doB. doingC. doneD. to do15.tudents are prohibited _______ inside school.A. from smokingB. to smokeC. smokingD. smoke五、翻译35’1.我今天跟大家谈谈世界上大片区域是怎样受工业污染而被破坏的I am talking to you today about _______ _______ large areas of the world are _________ ___________ industrial waste.2.要解决关于长江的所有问题,我们还有很长的路要走We still ______ _______ _______ ________ ______ _______ to solve all the problems _______ the Yangtze River.3.目前的世界人口与18相比已经增到那时的六倍多The world’s population has grown to more than _________ _________ _______ _________ _______in 1800. 4.我的建议是,我们应当尽量削减生产,减少制造和购买物品的数量My suggestion is that ________ _________try to _______ ________ ________ production and reduce _______ _______ ________ things we make and buy.5.这个问题还有待于解决The problem ________ ________ __________.U2M5一、重点单词1.debatey3.beneficial4.stable5.ridiculous6.decrease7. nationally 8.custom9. state 12..approach13. arrival 14. illegally15.diverse 16.hunt17.concerning 18.conservation19.rapid oncern二、重点短语1.in addition 2 wipe out 3 cut back on 4 rely on / depend on 5 open the floor6lead to / result in 7 keep …in mind 8 prohibit …from doing9run out 10 under way 11.in the form of 12. focus on /upon13. be willing to do 14. be stocked with 15. benefit from 16. run across17. see sb as 18. non-government organization19.under way the key to success三、1. an2. that3. As4. being5. or6. money7. bad8. What9. with 10. There四、单选1-5 BBBAB 6-10 BCBBB . CDBCA五、1.the way , damaged by2. have a long way to go, concerning3. six times , what it was4.we should cut back on , the amount of5. remains to be done。
个别企业粽子产品掺加化工原料新华社北京5月28日专电(记者黄全权)端午节将至,购买成品粽子成为很多家庭的选择。
但国家质检总局提供的一份专项抽查结果表明,粽子产品的质量并不容乐观,其中部分产品存在较为严重的问题。
为保障消费安全,国家质检总局日前组织16家国家级食品质检中心对粽子产品进行了产品质量国家监督专项抽查,抽查范围涉及北京、天津、辽宁等14个省、自治区、直辖市,共抽查了152家企业生产的256种粽子产品,产品抽样合格率为85.5%。
抽查发现,大型企业、品牌知名度高的企业生产的产品总体质量状况较好,但与此同时,有10家企业生产15种产品粽叶中铜的测定不合格;有13家企业生产的17种产品中大肠菌群不合格。
其中,大肠菌群检测值最高为24000MPN/100g,超过标准限定值的100多倍。
个别样品在抽查中被检出掺加了硼砂,粽叶经硫酸铜等浸泡过。
据了解,硼砂是一种化工原料,多在陶瓷、玻璃等产品的制造中使用,但不得在食品中使用。
在粽子中掺加硼砂,可以延长粽子的保质期,增加黏度,还不粘粽叶。
硫酸铜则广泛用于染料、农药等行业。
用硫酸铜等浸泡粽叶,会使已经失去原色的粽叶返青,表面变得光鲜。
北京东颐食品厂、大连三叶食品有限公司、长春市力通速冻食品有限公司、合肥皖毛毛速冻食品有限公司、福州鑫兴源食品开发公司、米泉市迪迪食业有限责任公司(新疆)、新疆聚佳科技发展有限公司、乌鲁木齐鼎泰丰食品有限公司等8家企业的产品在抽查中被检出严重问题,其中福州鑫兴源食品开发公司的两种产品被检出硼砂。
质检部门目前已对存在严重问题的8家企业依法查处,对粽子中掺有硼砂或粽叶经硫酸铜等浸泡的生产企业紧急查封,对尚未售出的产品监督销毁,对已售出的产品要求企业收回,并追根溯源查清原料来源、查清不合格产品的流向。
按照国家质检总局的统一部署,目前各地质检部门正组织对质量不稳定的粽子生产小型企业、小作坊进行重点检查。
绿色GDP,一个更接近幸福的指标环境污染影响着经济发展和经济健康国家环保总局副局长、新闻发言人潘岳近日宣布,中国绿色GDP核算体系框架已初步建立,有关部门将在中国六个大区各选择一个省,进行绿色GDP试点,争取今年底推出阶段性成果,为中国早日全面实施绿色GDP核算提供经验GDP的代价GDP代表着目前世界通行的国民经济核算体系。
而环境和生态是一个国家综合经济的一部分,由于没有将环境和生态因素纳入其中,GDP核算法就不能全面反映国家的真实经济情况。
人们渴望国家经济快速发展,生活富裕,在很多人看来GDP即国内生产总值越高,给社会带来的收益就越大。
其实不然,国家环保总局副局长潘岳说,发生了洪灾,就要修堤坝,这就造成投资的增加和堤坝修建人员收入的增加,GDP 数据也随之增加;环境污染导致病人增多,医疗产业便随之发展,GDP也跟着大发展。
“由于前一时期过分着重于GDP的增长,甚至把发展等同于增长,把许多无可回避、必须解决的经济、社会和政治问题留在了后面。
”全国政协委员、著名经济学家吴敬琏说。
上世纪中叶开始,随着环境保护运动的发展和可持续发展理念的兴起,一些经济学家和统计学家们,尝试将环境要素纳入国民经济核算体系,以发展新的国民经济核算体系,这便是绿色GDP,它是对GDP指标的一种调整,是扣除经济活动中投入的环境成本后的国内生产总值。
相关数据显示,1985年至2000年的15年是中国经济的高速增长期,GDP 年均增长率为8.7 %。
而若扣除损失成本和生态赤字,即自然部分的虚数和人文部分的虚数后,这期间中国的“真实国民财富”仅为名义财富的78.2%。
事实上,过去15年中国GDP的实际年均增长率只有6.5%。
“中国环境的问题形成既有历史的原因又有自然条件的限制,中国经济行为和社会活动的影响也是一些工业化快速发展时期难以避免的环境代价,但粗放型的经济增长方式无疑是一个重要的原因。
”国家环保总局局长解振华说,“目前我国的经济总量虽然排在世界的第六位,但产业技术水平低,规模小,浪费和破坏资源严重。
水环境污染与健康
水中的污染物通常可分为三大类,即生物性、物理性和化学性污染物。
生物性污染物包括细菌、病毒和寄生虫。
到目前为止,有关致病细菌和寄生虫的研究较多,且已有较好的灭活方法。
但对致病病毒的研究尚不够充分,也没有公认的病毒灭活要求标准。
人类由粪便排出的病毒达100种以上,它们经不同途径污染水源。
通过常规的净化与消毒处理,大部分病毒可被杀灭,但在自来水厂的出水中仍可能有部分存活,主要有脊髓灰质炎病毒、柯萨奇病毒、轮状病毒、甲型肝炎病毒等。
随着水环境污染状况的变化,水体中原有的病毒亦可能发生变化,并出现新的病毒。
物理性污染物包括悬浮物、热污染和放射性污染。
其中放射性污染危害最大,但一般存在于局部地区。
化学性污染物包括有机和无机化合物。
随着痕量分析技术的发展,至今从源水中检出的化学性污染物已达2500种以上。
目前应该高度关注的主要有:(1)介水传染病,由水中生活性污染物造成。
饮用不洁水或食用被水污染的食物可引起伤寒、霍乱、细菌性痢疾、阿米巴痢疾、甲型肝炎等传染性疾病,应特别避免这类疾病的暴发流行。
此外,人们在不洁水中活动,水中病原体亦可经皮肤、黏膜侵入机体,如血吸虫病、钩端螺旋体病等。
(2)致突变、致癌和致畸作用。
水体中常见的致突变污染物如氯代甲烷、丙烯腈等,可引起生物体遗传物质发生突然的、可遗传的效应;石棉、砷、镍、铬等无机物和亚硝胺、苯胺等有机污染物作用于机体可诱发肿瘤的形成;甲基汞、五氯酚钠等致畸污染物可通过妊娠中的母体干扰正常胚胎发育过程,使胚胎发育异常而出现先天性畸形,也可直接作用于生殖细胞,影响生殖机能和出生缺陷。
(3)水环境内分泌干扰物质的危害。
某些化学性污染物如邻苯二甲酸二丁酯、对硫磷、合成除虫菊酯等可干扰机体内一些激素合成、代谢或作用,从而影响机体的正常生理、代谢、生殖、生育等功能。
为了保证饮水安全,防止疾病发生,可采取完善法规、强化管理、保护水源、防治污染等措施,并建立介水传染病和环境污染事故突发应急处理机制。
从给水的角度考虑,可对现有自来水厂进行技术改造,增加臭氧氧化和活性炭吸附或生物活性炭处理等工序。
其次,可对现有出厂自来水进行再处理,但要防止二次生物性污染。
从研究工作角度考虑,今后应对水环境病毒变异状况及其安全性和预警进行研究;有关工业废水处理、饮用水的净化和消毒技术,包括致突变物、致
癌物、致畸物和内分泌干扰物的深度处理技术,水生腐殖酸、藻类、磷、氮、氟、砷、氯化消毒有害副产物的控制技术以及新型消毒剂及其安全性评价研究,今后仍应给予足够的重视。