1. For a long time/ people/ use water/ power machines.
2. Solar panels/ place/ the roof/ a house/ and/ sun’s energy/ use/ heat water. .
3. We/ use energy/ the sun, the wind, and the water.
4. Many countries/ already using/ solar energy.
5. The earth’s fossil fuels/ running out.
6. We/ looking/ cheap, clean, effective source/ energy/ not cause pollution or waste natural resources.
7. Recently/ wind/ use/ generate electricity. .
8. The sun/ supply/ all energy/ used/ grow plants/ evaporate water/ rain/ and/ maintain/ temperature/ planet
9. At present/ most/ our electricity/ come/ use/ coal, gas, oil or nuclear power. .
10. Today/ water power/ mostly/ use/ generate electricity.
11. This power/ could/ provide/ sun. .
12. If we/ able/ collect solar energy/ we/ be sure/ have enough power.
13. Scientists/ try/ find/ other alternative sources/ energy.
14. One percent/ solar energy/ reach/ earth/ enough/ provide power/ the total population.
15. Viet Nam/ an advanced technology/ solar energy. .
16. The energy/ store/ a number of days. 17. Car/ use solar energy/ gas/ by the year 2030.
.18. Energy/ wind/ use/ centuries/ move ships, grind grain, pump water/ and/ do other forms/ work. 19. On/ cloudy/ you/ use/ solar energy/ too.
20. Almost all our energy/ come/ oil/ gas/ natural gas. We/ them/ fossil fuels. ........................................................................................................................
1. For a long time people have uses water to power machines.
2. Solar panels are placed on the roof of a house and the sun’s energy is used to heat water. .
3. We can use energy from the sun, the wind, and the water.
4. Many countries have already been using solar energy.
5. The earth’s fossil fuels are running out.
6. We are looking for a cheap, clean, effective source of energy that does not cause pollution or waste natural resources.
7. Recently wind has been used to generate electricity. .
8. The sun supplies all the energy used to grow plants, to evaporate water for rain, and to maintainthe temperature of the planet.
9 At present,most of our electricity comes from the use of coal,and gas,oil and nuclear power
10. Today water is mostly used to generate electricity
11. This power could be provided by the sun. .
12. If we are able to collect solar energy, we will be sure to have enough power.
13. Scientists are trying to find and use other alternative sources of energy
14.One percent of the solar energy that reaches to the earth is enough to provide the power for the total population
15. Viet Nam can be an advanced technology in solar energy. .
16. The energy can be stored in a number of days.
17. Car will use solar energy instead of gas by the year 2030.
.18. Energy from the wind has been used for centuries tp move ships, grind grain, pump water and to do other forms of work.
19. on cloudy days you can use solar energy too
20. Almost all our energy comes from oil, coal, and natural gas. We call them fossil fuels
