3/ All of us use energy every day - for transportation, cooking, (1) ............ and cooling rooms, manufacturing, lighting and entertainment. The choices we make about (2) ............... we use energy turning machines off when we're not using them or choosing to buy (3) ..............
There are many things we can do to use less energy and use it more wisely. Two main wats to (4) ............. energy are energy conservation and energy efficiency. Turning lights off when you leave the room and (5) ............ aluminum cans are both ways of conserving energy. Energy efficiency is the use of technology that requires less energy (6) .......... the same function. A compact fluorescent light bulb that uses less energy than an ordinary bulb to produce the same (7) ........... of light is an example of energy efficiency.
1. A. lighting B. heating C. hotting D. airing
2. A. when B. why C. how D. which
3. A. efficient B. efficiency C. efficiently D. effective
4. A. store B. produce C. use D. save
5. A. reusing B. returning C. recycling D. redoing
6. A. perform B. to perform C. performing D. to performing
7. A. number B. amount C. speed D. source
