If you’ve ever seen smog hanging low over a city, then you’ve seen air pollution first-hand. Air pollution can be natural or man-made, but it’s the man-made pollutants that are the most destructive, like greenhouse gases that contribute to global warming and the destruction of the ozone. Carbon dioxide is one of the worst air pollutants, it’s mainly emitted from power plants, cars, planes and other vehicles and comes from burning fossil fuels. Another major air pollutant is methane, which comes from raising livestock, and CFCs (chlorofluorocarbons) which are used in aerosol products.
Air pollution has been linked to health problems like asthma and lung disease, as well as the deterioration of the ozone layer (which protects us from harmful UV rays) and the warming of the earth which may destroy the habitats of many animals. Governments are trying to encourage people to lessen air pollution driving less, recycling and limiting their energy consumption.
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READING Task 1.Read the text about calories we burn in one hour. Find the information in the text and decide if these statements are True or False. How many calories can you burn in one hour? Well, it all depends on the activity. You use calories all the time, even when you are resting. Reading, sleeping, sitting and sunbathing all use about 60 calories an hour. Very light activities use 75 calories. Examples are eating, writing, knitting, shaving, driving and washing up. Light activities which use about 100 calories an hour include playing the piano, getting dressed and having a shower. Under moderate activities that use between 100 and 200 calories an hour, we can put walking, doing housework, shopping and skating. Energetic activities use 200-400 calories. These include horse riding, cycling, swimming, skipping and dancing. Finally, there are strenuous activities, which use up to 600 calories an hour. These activities include climbing stairs, digging the garden and playing football. 1) When we are resting, we do not burn calories. * True False 2) Sunbathing uses more calories than driving. * True False 3) The amount of calories we use an hour depends on the activity we do. * True False 4) Cycling and dancing use the same amount of calories. * True False 5) Having a shower uses only 100 calories an hour. * True False 6) Reading uses as many calories as writing. * True False 7) Walking is very light activity. * True False
ответ:1 false
2 false
3 true
4 true
5 true
6 false
7 false
Объяснение: