| 阅读理解。 |
| Solar energy (power from the sun) is of many uses. In many parts of the world, people are building solar houses with large numbers of windows to collect the heat of the sun. Solar collectors can make hot water from sunlight. The rays of the sun heat water in a solar collector, and the hot water goes into a storage tank (蓄水箱). People can use the hot water for washing or for heating their houses. In the future, people may use the rays of the sun to make electricity for their homes. They will use photovoltaic cells to make electricity from sunlight. The sun is an important "new" source of energy. It is less expensive than oil or nuclear energy. Furthermore, it does not cause pollution, and it is not as dangerous as nuclear power. Many people think that solar energy will be the answer to our future energy problems. |
| 1. What is the source of solar energy? |
| A. The earth. B. Oil. C. The sun. D. Nuclear energy. |
| 2. A solar collector can ______. |
| A. answer our future energy problems B. make electricity from sunlight C. use hot water for washing D. make hot water from sunlight |
| 3. Solar energy may solve ______. |
| A. water shortages B. storage problems C. future energy problems D. future water problems |
| 4. People may use the hot water from a solar collector ______. |
| A. for nuclear power B. for washing and heating C. to cause pollution D. to change sunlight into electricity |