完形填空

　　When people talk about air pollution, they are usually thinking about outdoor air 　　1　　．But do you know that there is also air pollution inside homes, offices, hotels and other buildings?The air in your home can be 2 to 100 times more polluted than the air outdoors!In fact, some American doctors say that 50％ of illnesses have 　　2　　 to do with polluted indoor air．

　　A lot of pollution comes from indoor activities 　　3　　 smoking and cooking．As most people 　　4　　 about 80-90％ of their time inside buildings, it is important to take indoor air pollution seriously, too．

　　Air pollution influences our health 　　5　　．When the air is polluted, not only young children and old people suffer from(遭受)it, 　　6　　 people with health problems suffer as well．Indoor air pollution can 　　7　　 people's eyes, noses and throats．Air pollution, both indoor and outdoor, can also lead to lung cancer(肺癌)and heart disease!In the great London fog in 1952, 4,000 people died in a few days 　　8　　the pollution!It is said that half a million young children and women die each year in India because of indoor air pollution!

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

　　Hundreds of years ago，life was 　　1　　 than it is today．People didn’t have modern machines．There was no modern medicine，either．

　　Life today 　　2　　 new problems．One of the biggest is pollution(污染)．Water pollution has made our rivers and lakes dirty．It kills our fish and affects(影响)our drinking water．Noise pollution makes us 　　3　　 louder and louder．Air pollution is the most serious kind of pollution．It affects 　　4　　 living thing in the world．

　　Cars，planes and factories all pollute(污染)our air every day．Sometimes the pollution is so thick that it is like a quilt 　　5　　 a city．This kind a quilt 　　6　　 smog(烟雾)．

　　Many countries are making new laws(法律)to fight pollution．Factories must now clean their water 　　7　　 away，they mustn’t blow dirty smoke into the air．

　　We need to do many other things．We can put waste things(废物)in the dustbin(垃圾箱)and 　　8　　 it on the ground．We can go to work by bus or with our friends in the same car．If 　　9　　 people driving，there will be less pollution．

　　Laws are not 　　10　　 ．Every person must help to fight pollution．

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

根据短文内容选择可以填入空白处的最佳答案。

　　Pollution means contaminating the Earth's environment with materials that harm people's 　　1　　 and lower their quality of life．Pollution can also harm animals and plants．　　2　　 many different forms of pollution．The three major groups are air pollution, land pollution and water pollution．

　　Air pollution comes from different sources－not 　　3　　 of them are man-made．For example, dust storms in deserts and the smoke from forest fires are natural sources of air pollution．In urban areas, dirty air is more noticeable 　　4　　 the fumes from traffic and the waste from factories．Air pollution can affect humans by causing sore eyes and respiratory 　　5　　, especially in children and the elderly．Land pollution is caused by the deposit of soil waste that 　　6　　 be broken down quickly or at all．Land pollution can affect the lives of animals and plans, and it makes the environment look very 　　7　　 Recycling and reusing materials can help reduce the amount of land pollution．Other methods include landfill-using the rubbish to make new land and burning the rubbish, but these two methods can pollute the water and air．

　　Water pollution results when substances that are released into lakes, rivers, oceans, etc．stay in the water or 　　8　　 at the bottom．This form of pollution may also begin in the air if the air is polluted and causes acid rain．When it 　　9　　, the rain will then pollute the water in lakes, rivers, oceans, etc．Soil erosion is one example of natural water pollution and can cause problems 　　10　　 the soil blocks the flow and leads to flooding．Pollution from human sources includes chemicals, waste from factories and human sewage．

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

根据短文内容选择可以填入空白处的最佳答案。(Choose the best answers to complete the passage．)

　　Pollution means contaminating the Earth's environment with materials that people's 　　1　　 and lower their quality of life．Pollution can also 　　2　　 animals and plants．　　3　　 many different forms of pollutions．The three 　　4　　 are air pollution, land and water pollution．

　　Air pollution comes from different sources－not 　　5　　 of them are man-made．For example, dust storms in deserts and the smoke from forest fires are natural sources of air pollution．In urban areas, dirty air is more noticeable 　　6　　 the fumes from traffic and the waste from factories．Air pollution can 　　7　　 humans by causing sore eyes and respiratory 　　8　　, especially in children and the elderly．

　　Land pollution is caused by the deposit of soil waste that can't 　　9　　 quickly or at all．Land pollution can affect the lives of animals and plants, and it makes the environment look very 　　10　　 Recycling and reusing materials can help 　　11　　 the amount of land pollution．Other methods include landfill－using the rubbish to make new land－and burning the rubbish, 　　12　　 these two methods can pollute the water and air．

　　Water pollution results when substances are released into lakes, rivers, oceans, ect．Stay in the water or 　　13　　 at the bottom．This form of pollution may also begin in the air if the air is polluted and cause acid rain．When it 　　14　　, the rain will then pollute the water in lakes, rivers, oceans, ect．Soil erosion is one example of natural water pollution and can cause problems 　　15　　 the soil blocks the flow and leads to flooding．Pollution from human sources includes chemicals, pesticides, waste from factories and human sewage．

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

(14)

(15)