Coal, oil, and natural gas supply human being with most of its power. 
However, not only are supplies of these fuels limited, but they are a major resource 
of pollution. Therefore, it’s important to improve, explore and develop such 
alternative energy sources as nuclear, water, solar, and wind power. Each of these 
alternatives, however, has advantages and disadvantages. 
Nuclear power factories efficiently produce large amount of electricity 
without polluting the atmosphere; however, they are costly to build and maintain, 
and thy are the difficult problem of what to do with nuclear waste. Hydroelectric 
power in expensive and environmentally safe, but impractical for communities 
located far from moving water. Wing power is pollution-free source of renewable 
energy but it cannot be used in many parts of the world where there is insufficient 
wind. Solar power is renewable, it does not cause pollution and it does not add the 
earth’s heat load. However, it is difficult to collect and store. Solar power also 
requires expensive equipment.
F  1. Coal, oil and natural gas are pollution-free sources of energy. 
F  2. Hydroelectric power is expensive and always available everywhere.   
T  3. Wind power doesn’t pollute the environment.
T 4. Solar power is never completely used up.
B. Choose the best answer:
5. Nuclear power factories ……….
A. are difficult to build B. pollute the atmosphere
C. are very cheap to maintain D. create the problem of nuclear 
waste
6. What is the advantage of these alternatives ?
A. They are environmentally friendly energy sources
B. They are non-renewable forms of energy
C. They are all very practical
D. They are inexpensive to exploit

Coal, oil, and natural gas supply human being with most of its power. 
However, not only are supplies of these fuels limited, but they are a major resource 
of pollution. Therefore, it’s important to improve, explore and develop such 
alternative energy sources as nuclear, water, solar, and wind power. Each of these 
alternatives, however, has advantages and disadvantages. 
Nuclear power factories efficiently produce large amount of electricity 
without polluting the atmosphere; however, they are costly to build and maintain, 
and thy are the difficult problem of what to do with nuclear waste. Hydroelectric 
power in expensive and environmentally safe, but impractical for communities 
located far from moving water. Wing power is pollution-free source of renewable 
energy but it cannot be used in many parts of the world where there is insufficient 
wind. Solar power is renewable, it does not cause pollution and it does not add the 
earth’s heat load. However, it is difficult to collect and store. Solar power also 
requires expensive equipment.
F  1. Coal, oil and natural gas are pollution-free sources of energy. 
F  2. Hydroelectric power is expensive and always available everywhere.   
T  3. Wind power doesn’t pollute the environment.
T 4. Solar power is never completely used up.
B. Choose the best answer:
5. Nuclear power factories ……….
A. are difficult to build B. pollute the atmosphere
C. are very cheap to maintain D. create the problem of nuclear 
waste
6. What is the advantage of these alternatives ?
A. They are environmentally friendly energy sources
B. They are non-renewable forms of energy
C. They are all very practical
D. They are inexpensive to exploit