Read the passage carefully, then choose the correct answer.
Coal, oil, and natural gas supply modern civilization with most of irs power. However, not only are supplies of these fuels limited, but they are a major source of pollution. Therefore, its 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 plants efficiently produce...
Đọc tiếp
Read the passage carefully, then choose the correct answer.
Coal, oil, and natural gas supply modern civilization with most of irs power. However, not only are supplies of these fuels limited, but they are a major source 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 plants efficiently produce large amounts of electricity without polluting the atmosphere; however, they are costly to build and maintain, and they create the difficult problenı of what to do with nuclear waste. Hydroelectric power is inexpensive and environmentally safe, but impractical for communities locnted far from moving water.Wind power is a pollution-free source renewable energy but it cannot be used many parts of the world where there is insufficient wind. Solar power renewable, it does not cause pollution and it does not add the earth's heat load. However, it ia dilficult to coilect and store. Solar power also requir eensive equipnent
Every source of energy has its disadvantages. One way to minimize them is to use less energy. Conservation efforts coupled with renewable energy resoucs wll ensure supplies of clean, affordable energy for humanity's future.
1. Coal, oil and natural gas .............
a. are very great in amount
c. pollute the atmosphere
b. will never be used up
d. supply most of its power
2. Nuclear power plants
a. are difficult to build ..............
c. are very cheap to maintain
b. pollute the atmosphere
d. create the problem of nuclear waste
3. Wind power...............
a. cannot be used in places that has strong wind
b. is never completely used up
c. is a source of pollution
d. cannot replace itself .
4. What is the adyantage 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
5. From the passage, it can be inferred that to solve our energy problem...................
a. we will have to stop using many of our modern conveniences
b. scientists will have to find one major source of nonpolluting energy
c. scientists will have to find ways to increase our supplies of coal, oil, and gas
d. a combination of conservation and invention will be needed
