I. Choose the best one (A, B, C or D) to complete the sentence or replace the underlined word.
1. Nuclear energy is , but it is dangerous.
A. renewable B. non-renewable C. natural resource D. fossil fuel
2. Fossil fuels are very common in our society but they the environment.
A. waste B. pollute C. renew D. provide
3. All the houses in our village will be by solar energy.
A. frozen B. widened C. heated D. heightened
4. Several governments try to the use of fossil fuels.
A. waste B. save C. reduce D. increase
5. At this time next week, we a wind turbine in our garden.
A. will installed B. will be installing C. install D. installed
6. Low energy light bulbs should be used to electricity.
A. convert B. save C. spend D. buy
7. It is a good idea to use when travelling long distances.
A. private cars B. public transport C. cars D. taxis
8. “Why is it called a source?” - “Because it can be replaced easily and quickly.”
A. renewable B. non-renewable C. effective D. specific
9. We must the amount of water our family use every day.
A. lessen B. narrow C. lower D. reduce