a nation with as much industry as the united states need energy to 1 everything running. energy means 2 . 3 is a form of energy. it makes electric lights, re-corders, tv sets and conditioners 4 . petrol is 5 to power cars, planes and so on. coal is another form of energy, 6 is used to heat many homes and factories and 7 electricity.
the united states is a land 8 in natural resources. some of the resources, such as water, 9 and coal, has been used to produce enough energy the country l0 . but 11 the united states grows larger, it needs more and more 12 . many people 13 now that the oil in the united states can’t 14 as much energy as the nation needs.
the united states has begun to 15 more than half the oil it needs from other countries. these nations 16 very 17 prices for their oil. 18 people in the u-nited states 19 to pay those prices. the united states has to think of ways to 20 sure that its people can get the energy they need at a price they can afford today.
1. a. let b. keep c. make d. remain
2. a. wealth b. money
c. power d. pollution
3. a. sunlight b. water
c. electricity d. seawave
4. a. play b. work
c. perform d. operate
