Turning off lights when and not wasting electricity will reduce the demand for energy.
A: they are not working
B: they are not needed
C: they are broken
D: they are dim
A: they are not working
B: they are not needed
C: they are broken
D: they are dim
举一反三
- 17. Turning off lights when you leave a room may seem silly, but it is a small step to saving energy. A: good B: state-of-the-art C: ridiculous D: dark
- The suggested plan was to ______. A: turn on all lights B: mm off all electricity for a short time C: shut off the fights in cities D: dim all lights
- Which of the followings can not help to save energy? A: recycling cans B: turning off lights C: driving a car
- By turning off lights, the television, and the computer when you are them, you can help a lot.
- Who can help you when you leave the room without turning off the lights and heaters A: A Computer. B: A Key. C: A sensor. D: The neighbors.