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1.
1 Introduction 1 It has been reported that the morbidity caused by indoor air pollution accounts for 4% of all diseases in the world, which is about the same portion of diseases caused by alcohol and cigarette. Indoor air pollution is the fourth one of the dangerous elements for the inhabitants and even more dangerous than outdoor air pollution. The bulletin of World Health Organization (WHO) [1] points out that the indoor air pollution is an important issue to environment and public health.…  相似文献   

2.
The earth is the most beautiful planet in the space.But nowadays,the earth is destroyed by some activities of mankind-There’s a lot of pollution all over the world,such as air pollution,water pollution and so on.It is important for us to save the earth.But how can we save the earth?Here are my suggestions.First,weshouldprotecttheplants.Weshouldn’tcuttrees,walkongrassandpickflowers.Second,weshouldpayattentiontorecycle.Andthenweshouldsaveenergyandwater.Weshouldturnoffthelightwhenitisnottood…  相似文献   

3.
趣味阅读     
The Mississippi is one of the longest rivers in the world. It was called “The Father of Waters”by the American natives. Drinking water was got from the Mississippi by people in towns and cities. Water for industrial use was got from it by facto-ries. But today “The Father of Waters”is in trouble. A lot of large factories were built along the river. Millions of tons of in-dustrial water was poured into the river. Its water for drinking was no longer able to be used. Birds and fish wer…  相似文献   

4.
Windmill Day     
Windmill is the symbol of the Netherlands. It is said that the first windmill in the world was built by the Dutch in 1408. There were as many as 9, 000 windmills in the country. Now only about 900 of  相似文献   

5.
The world itself is becoming much smaller by using modern traffic and moderncommunication means(通讯设备).Life today is much easier than it was hundred ofyears ago, but it has brought new problems. One of the biggest is pollution(污染).To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it.  相似文献   

6.
David Beckham was born May 2,1975,in England. One of the most renowned footballers in England and pro athletes in the world,he was signed by Manchester United at the age of 14. He began his soccer career at the age of 17 and play for the Manchester United football team.In the 2003,Beckham signed a 4-years contract with Real Madrid. This year,Spanish newspaper reported that Beckham is expected extend his contract at Real Madrid by two years till 2009.The Beckhams announced the birth of t…  相似文献   

7.
张宝予 《海外英语》2012,(11):204-205
Ode to the West Wind was accomplished by Percy Bysshe Shelley shortly after the failure of strikes and demonstrations of workers in the early 19th century when European people were in great horror under the control of the Holy Alliance.Many people had lost faith in revolution and future.Poets started to demoralize themselves.But Shelley was full of confidence that old world must go and new climax of revolution would come and achieve its final victory.This essay aims to appreciate Ode to the West Wind by analyzing its contents,features and writing techniques.  相似文献   

8.
As a trend of thought in literature and art,aestheticism rose suddenly at the end of the 19th century and withered away soon.It was just like a flash in the world of literature and art.One of the initiators,Oscar Wilde,has been noticed with great attention by the critics.Wilde earnestly practiced the aestheticism he advocated.Some of his acts were cast aside by the moral in his time,which at last led to his death in a strange land.  相似文献   

9.
The buildup of roof pollutants in an urban area of Shanghai, China was investigated by conducting 16 experiments between November 2007 and October 2008. Concentrations of Cu, Zn and Cd in runoff from three types of roof (concrete, aluminum and glass) exceeded USEPA National Recommended Water Quality Criteria. The solid/liquid partition of the selected metal elements was consistent for the three roof types: Al, Fe, Zn and Pb were present mainly in the particle-bound form, while the total loading of Cd was nearly 100% in the dissolved form. Atmospheric dry precipitation accounted for most of all pollutant loadings for all roof types, while roof material made only a minor contribution to the loadings. All pollutant accumulation rates except for COD showed a seasonal trend with peaks in spring (March-May) and winter (December-February) and troughs in summer (June-August) and autumn (September-November). Our results showed that a linear equation is the most reliable of commonly used buildup models to simulate the total phosphorus (TP) and total suspended solids (TSS) buildup processes on aluminum roofs and glass roofs. This study provided novel information about roof runoff in Shanghai, China, in terms of pollution status, pollution source and pollutant buildup processes, thereby aiding in rainwater utilization and non-point pollution control.  相似文献   

10.
Pollutant transport in overland flow over surfaces with spatially varying microtopography,roughness,and infiltration was investigated using the diffusion wave equation and transport rate-based equation.The finite volume method in space and an implicit backward difference scheme in time were employed in the numerical solution of the 2D governing equations.The developed model was first tested against an analytical solution and an experimental study involving overland flow and the associated pollutant transport,subsequently a series of numerical tests were carried out.Non-point source pollution was investigated under spatially varying microtopography,roughness,and infiltration.The simulation results showed that microtopography and roughness were the dominant factors causing significant spatial variations in solute concentration.When the spatially varying microtopography was replaced by a smooth surface,the result was an overestimation of the solute rate at the outlet of the upland.On the other hand,when the spatially varying roughness was replaced by the average roughness and spatially varying infiltration rate by the average infiltration rate,the pollutant discharge at the outlet of the upland was not significantly affected.The numerical results further showed that one cannot ignore the spatial variations of slope and roughness when investigating the local pollutant concentration distribution.  相似文献   

11.
Born in Germany in 1970, Claudia Schiffer was to become one of the most successful supermodels in the early Nineties. With over 500 magazine covers to her credit, her success in the cut-throat world of fashion has been down to a combination of astute management and stunning blonde looks. The 17-year old Schiffer was first spotted in 1987, at a Dusseldorf disco, by Michel Levaton, boss of the Metropolitan Model Agency. Schiffer was then introduced to agent Aline Souliers, who quickly secured her an appearance in French Elle, sparking a flurry of interest around Europe. Her management carefully selected jobs to "stimulate demand" for Schiffer' s wholesome looks and, half a dozen magazine covers later, she was chosen by Karl Lagerfeld to be the new Face of Chanel.  相似文献   

12.
We established a hydrodynamic model to simulate the pollutant transport and decay process in the case of a pollution incident in the sections of the Yangtze and the Jialing passing through the city area of Chongqing. The Boussinesq assumptions and the Navier-Stokes equations of incompressible fluid were applied to setting up the pollutant diffusion equations and the equations for the decay process. E. coli was taken as the example pollutant, and chloride dosage, light, temperature and ultraviolet intensity were considered in the equations for bacterial decay process. The calculated values of the fluid velocities in the two rivers agree well with corresponding measured results, indicating an ideal accuracy of the model. In simulation, the concentration of E. coli in water was assumed to be zero before the accident. The upriver boundary velocity was ?1.35 m/s for the Jialing flow and 1.75 m/s for the Yangtze flow, and the downriver boundary was water depth set at 0. Simulation results show that the bacteria are transported downstream along the riverbank. A long and narrow pollutant belt develops at 12 h after the start of the accident ascribed to the quick longitudinal transfer. After the pollution sources are cut off, the pollutant concentration decreases slowly, mostly by advection and diffusion, suggesting inadequate self-purification ability of the rivers and the necessity of effective decontaminating measures in the case of a pollution incident. The model can be a useful tool for understanding the polluting situations of an improper discharge incident and evaluating the effects of decontaminating measures for the water body of the Three Gorges Reservoir.  相似文献   

13.
A large press conference(会议,商谈) is currently underway in Beijing, 1 part of the National People's Congress. China's environmental authority(官方) 2 that the Songhua River in northeast China is unlikely to suffer 3 water pollution this year. This announcement was made by the Minister of State Administration for Environmental Protection, Zhou Shengxian.The M inister said the conclusion4from test results by both Chi-nese and R ussian authorities.W ater in the Songhua R ive…  相似文献   

14.
As late as 1800, women's only place was in the home. The idea of women in the (?) world was unthinkable. (?) "nice" woman would dream of (?) what was strictly a "man's world". Even if she could, what would she do? (?) was the first  相似文献   

15.
人口与污染     
The world itself is becom ing m uch sm aller by using m odern trafficand m odern com m unication m eans.Life today is m uch easier than it was hun-dreds of years ago,is has brought new Problem s.O ne of the biggest is pol butlution.To pollute m eans to m ake things dirty.Pollution com es in m any w ay.W e see it,sm ell it,drink it and even hear it.M an has been polluting the earth.The m ore people,the m ore pollution.M any years ago,the problem w as not so serious because there were notso m …  相似文献   

16.
李欢 《海外英语》2011,(10):270-271
In feudal China and Europe once had a seemingly same phenomenon of godding the kingship. The European believed in the idea of Divine Right of kings, while the Chinese deeply thought that Emperor was entrusted by Heaven to rule the world. Both king and Emperor were authorized rulers. However, those theories have difference in connotation, foundation and representation; therefore they are different at the core.  相似文献   

17.
A  J. Dalton 《英语沙龙》2010,(6):14-15
I In certain countries of the world, the king or queen is still considered to be a demi-god. The UK is not one of those countries. It's tree that up until the 17th ccntmy, the British king or queen was believed to rule by' divine fight', which was the idea that God chose the king or queen to rule and that he or she was therefore above the law. The idea that the monarch was above the law ended with the English Civil War, in which King Charles the First was imprisoned and then beheaded in 1649.  相似文献   

18.
Cars     
The first car In 1885,German mechanical engineer,Karl Benz designed and built the world’s first practical automobile to be powered by an internal-combustion engine(内燃机).On January 29,1886,Benz received the first patent(专利)for a gas-fueled car.It was a three- wheeler;Benz built his first four-wheeled car in 1891.Benz & Company,the company started by the inventor,became the world’s largest manufacturer of automobiles by 1900.  相似文献   

19.
Captain James Cook made his name as a world-famous explorer. It was Cook who represented the British in first travelling to New Zealand and Australia, paving the way for the British to venture further into these lands.The year was 1768 when the British government had a special force of explorers sent to discover for the British new lands in the southern part of the world. The leader of this expedition was James Cook.Firstly, he discovered New Zealand for the British. Then, it was Australia. There were already the original human inhabitants of these lands, so, morally speaking, Cook was not right in helping his government try and take over these lands from the natives.According to reliable sources , James Cook was the first European to land on Hawaii. However, it was at this place that he died tragically. He was killed by a few of the natives there. It happened in 1779.  相似文献   

20.
mark,make one's这一习语的意思为“成功”,“出名”,“留下深远影响”。1.Despite the helpgiven to all of them by their father,Henry was the only one of the five brothers whomade his mark in the world.尽管五兄弟都得到了父亲的帮助,但真正有出息  相似文献   

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