Recently, the topic of air pollution has again aroused more and more attention since pollution haze, a kind of weather, has appeared increasing frequently in our cities. Just as the picture showed, when pollution haze comes, the whole city was covered with suspended particles which can breath into our body causing heavy problem to our health.
Due to the bad effect from pollution haze, a green and clear environment, rather than anything else, turns to be an important role and a urgent issue in our daily lives. Meanwhile we just live in only an earth, if we didn’t try to protect our common hometown, we would have no place to settle.
Thus, we should take effective measures to rebuild our beautiful environment of the cities from now on.
In my opinion, law and regulations should be enforced by the government and authorities to control the emission of polluting gas. To ourselves, we should enhance the awareness of environment protection and choose a green lifestyle to make contribution to our earth day from day.
Recently,haze weather has become a daily one right here in large part of China.People are forced to wear the mask to avoid breathing poisonous air.So it is necessary to find out the reason why leads to that and work out the resolution.If we trace the cause for haze weather ,the main points are as follows ,first,china 's air quality standards are rather lax and evaluation factors are limited,so you will see that current air appraisal system has defects.Second,some people just go for economic interests instead of turning out products according to relevant law and regulations.They tend to use obsolete equipment in which they are high likely to emit a great deal of wasted air.
Third,across our society ,relevant protection awareness has not built up so that people havent formed a habit of using green product and saving energy as much as possible.Just for the sake of convience to go out,people rely more and more on travelling and working by car while car is the main cause for the haze weather
To settle this problem,a series of meaures should be taken as follows.First ,we should strengthen air monitor to lower the levels of small particulate pollutants.Second,we should enact more strict laws and regulations and keep perfecting our current law on environmental protection to regulate people 's daily action and the industrial production and punish those factories that ignore the protection and keep emitting dangerous material that cause haze.
Third,we should develop green and energy-saving energy to lower the emission of haze and improve air quality.As far as i am concerned ,if we work together to be able to do such measures ,our environment will getting better and better and haze weather will vanish completely.
笑,是朋友之间吵闹之后重归于好的见证;笑,是一位医生抢救病人之后的开心。笑,就是天上人间最美好的一幅风景。笑,就是那骄阳,就是那幸福的象征。
当你伤心时,你要笑对人生,伤心之后便是开心;当你受到挫折时,你还是要笑,它将是你成功的开始;当你高兴时,你更要笑,它是你幸福的象征。笑,是你内在修养的体现。
有一个年轻人,他很爱笑,走路时,都会面带笑容。他说不管走到哪,他都会微笑的和别人打招呼。终于,有人忍不住了,跑去问他,你没有烦恼吗?为什么你每天都看起来很开心似的?年轻人还是微笑的说:“不,我并不是没有烦恼,只是当我不开心的时候,我会微笑,慢慢的烦恼也会跟着消失,它给了我希望,让我更有勇气面对以后的失败。”
之后,这个小镇上的人,也笑的人多了。一张张的脸上都堆满了笑容。这个小镇上也少了辱骂声和吵架声,更多的是笑声。大家开心的笑,小镇也更加的安宁了。外地人也想知道,为何小镇变化如此之大,就纷纷得来此地旅游,小镇也慢慢的富裕起来了,也走向了城市化,但他们的笑容依然没有变。
笑是可以感染的,小时可以带来温暖的,笑可以改变一个人,一件事,当我们不开心,应该多笑笑,笑一笑十年少嘛,但笑也是一种礼仪。
一个小男孩跑到书店里,对店员大吼大叫的,还说他们一点规矩都没有,找了半天,也没看他买一本书。而另一个小男孩呢,他走进书店,微笑着和店员们打着招呼,并且他自己去找书,并不需要别人陪同,买完了之后,还不忘对售货阿姨说谢谢。
到了几年以后,第一个小男孩,他脾气十分暴躁,在一次和别人争吵中,他气不过,拿到刀把人刺成重伤,最后被判刑了。第二个小男孩,他因为有很好的教养,对人友好,他毕业不久,就被一家不错的公司给录用了,而且很受老板赞识。
为什么航空公司,要求每一位空姐以微笑服务客人?为什么各种大酒店的.服务生,都微笑的招待客人?
因为笑是美丽的风景,因为笑可以给人带来快乐……笑可以给人带来无尽的财富,所以我们要笑对人生,笑对将来。
Recently, the topic of air pollution has again aroused more and more attention since pollution haze, a kind of weather, has appeared increasing frequently in our cities. Just as the picture showed, when pollution haze comes, the whole city was covered with suspended particles which can breath into our body causing heavy problem to our health.
Due to the bad effect from pollution haze, a green and clear environment, rather than anything else, turns to be an important role and a urgent issue in our daily lives. Meanwhile we just live in only an earth, if we didn’t try to protect our common hometown, we would have no place to settle.
Thus, we should take effective measures to rebuild our beautiful environment of the cities from now on.
In my opinion, law and regulations should be enforced by the government and authorities to control the emission of polluting gas. To ourselves, we should enhance the awareness of environment protection and choose a green lifestyle to make contribution to our earth day from day
雾霾天气是一种重要的城市气象灾害。大范围雾霾天气主要出现在冷空气较弱和水汽条件较好的大尺度大气环流形势下,近地面低空为静风或微风。由于雾霾天气的湿度较高,水汽较大,雾滴提供了吸附和反应场所,加速反应性气态污染物向液态颗粒物成分的转化,同时颗粒物也容易作为凝结核加速雾霾的生成,两者相互作用,迅速形成污染。冷空气来临,风速增加,雾霾逐渐消散。研究表明,雾霾天气的形成和发展与气象条件关系密切。
2009年11月3-8日的一次持续性雾霾天气过程具有显著阶段性特征,是一次持续时间长、阶段性特征明显的雾霾混合性天气。本次持续性雾霾天气的第一阶段是霾阶段,该阶段PM2.5浓度增加是影响雾霾能见度降低的主要因素;第二阶段是大雾阶段,该阶段相对湿度增大是导致能见度下降的重要因素,在持续性大雾天气的静稳条件下,导致PM2.5浓度累积增加;第三阶段后,由于北方冷空气的入侵,大雾天气结束。可以看出,雾霾过程能见度的变化和相对湿度、PM2.5浓度、温度、风速的变化具有很好的阶段性对应关系。相对湿度与能见度在整个过程中保持稳定的负相关线性关系。由于温度决定了相对湿度的水平,因此温度与能见度的关系实际上反映了相对湿度与能见度的关系;而从整个过程来看,PM2.5与能见度是明显的非线性关系,在第一阶段PM2.5与能见度影响的速率要明显高于第二阶段,而在第二阶段中,PM2.5对雾霾能见度的影响水平几乎保持不变。风速与雾霾能见度是正相关的线性关系,从整体上看,风速越大能见度越好,而从风速对能见度影响的线性趋势上看,第一阶段风速对能见度的`影响速率要大于第二阶段风速对能见度的影响速率,第三阶段能见度随着风速的增加而迅速增大,反映出风速对雾霾过程能见度的转好有重要的作用。
以北京为例。研究发现:无论是年均水平还是月均水平,霾日都要远远高于雾日,说明霾天气比雾天气对北京的影响更为严重。从月际变化上来看,大雾天气月变化十分明显,更集中于10-12月份;而霾天气在各月差异相对较小,除8-10月份的其他各月均有较多霾天气出现。从空间分布来看,雾霾天气在北京东南及城区发生频率最高、强度最大,北京西北部雾霾发生频率最低、强度最小。城区和东南地区是霾天气影响最为严重的地区,而大雾天气虽然在东南发生频繁,但是大雾强度在城区相对较弱,在城区的西北和西南大雾强度最大。
雾霾天气频繁发生,对城市大气环境、群众健康、交通安全、农业生产等带来的影响日益显著,极易酿成雾霾灾害。同时,由于大部分严重的雾霾天气一旦形成往往很难消散,此类持续性雾霾天气对城市环境的危害往往尤其严重,并容易带来较强的社会负面影响。2011年,雾霾天气第一次入选中国十大天气气候事件,反映出社会公众对雾霾天气关注程度的进一步提高。雾霾气候特征和影响因素是雾霾灾害风险评估的基础性工作,对于雾霾防灾减灾和雾霾风险防范具有重要意义。
(摘编自读秀网《雾霾天气的影响及对策》)
1.下列对于雾霾天气的理解,不正确的一项是( )
A.雾霾天气是一种重要的城市气象灾害,严重的雾霾一旦形成,大多很难消散,对城市环境的危害很大,容易酿成雾霾灾害。
B.雾霾天气的大范围出现,主要是在冷空气较弱或水汽条件较好的大气环流形势下,而且近地面低空为静风或微风。
C.雾霾天气之所以形成污染,是由于反应性气态污染物向液态颗粒物成分的转化和颗粒物作为凝结核加速雾霾生成的相互作用。
D.雾霾天气的湿度较高,水汽较大,最后的消散往往受到冷空气入侵的影响,它的形成和发展与气象条件的变化有密切关系。
2.下列理解和分析,不符合原文意思的一项是( )
A.从具有显著的阶段性特征的雾霾天气过程来看,能见度的变化和PM2.5浓度、相对湿度、温度与风速的变化具有良好的阶段性对应关系。
B.在持续时间长的雾霾混合性天气的全过程中,温度、相对湿度与能见度保持稳定的负相关线性关系,风速与能见度的关系则成正比。
C. 2009年11月的那次雾霾天气的整个过程中,PM2.5与能见度是明显的非线性关系,它对雾霾能见度的影响水平几乎保持不变。
D.北京的雾霾天气有以下特点:霾日多雾日少;霾日分散雾日集中;雾霾天气中,大雾在东南地区发生频繁,但强度在城区相对较弱。
3.根据原文内容,下列理解和分析不正确的一项是( )
A.尽管雾霾天气在北京东南及城区发生频率最高、强度最大,但是雾天气和霾天气对这些地区的影响却有着明显不同。
B.雾霾天气如果持续时间长、阶段性特征明显,就会表现出:PM2.5浓度、相对湿度、风速与能见度保持稳定的线性关系。
C.雾霾天气人选中国十大天气气候事件,体现了民众关注度的提高,也可以反映出政府关注民生、直面问题的工作态度。
D.雾霾天气极易酿成雾霾灾害,如果对形成它的气候特征和影响因素进行灾害风险评估,采取针对措施,就有利于防范这种天气灾害。
Haze is air pollution in which is mixed up with dust, smoke and other dry particles ,and it obscure the clarity of the sky and interacts with the natural environment.
阴霾是空气污染和灰尘,烟雾和其他干燥粒子,它掩盖了清晰的天空,与自然环境进行交互。
雾霾原因This kind of air pollutant come from a variety of natural and manmade sources. Natural sources can include windblown dust, and soot from wildfires. Manmade sources can include motor vehicles, and industrial fuel burning, and manufacturing operations. The one of the main cause that touches off haze is manufacturing operations. Many factories were over measure produced the smog that had over the standard and the smog seriously influence the air become air pollution.
这种空气污染物来自各种自然和人为来源。天然来源可以包括风沙、烟尘从森林大火。人为来源可以包括机动车辆、工业燃料燃烧和制造业务。触动了烟雾的主要原因之一是制造业务。许多工厂测量产生的烟雾对标准和烟雾严重影响空气成为空气污染。
雾霾危害The components that make up haze may have negative effect on people's health especially that of the children and the elderly. Also not excluded are those who have certain diseases such as asthma, allergy, and pneumonia and lung disease. Workers working in the open air have a high risk in their health.
组件构成烟雾可能对人们的健康有负面影响特别是儿童和老人。也不排除是某些疾病如哮喘、过敏、肺炎和肺部疾病。工人工作在露天有很高的`风险在他们的健康。
解决方法 One of effective solutions to help eliminate haze is to make some chemistry changes during the manufacturing process,so it could reduce harmful emissions which are produced by manufacturing operations
一个有效的解决方案,帮助消除烟雾是让一些化学变化在制造过程中,所以它能减少有害排放产生的制造业务。
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