_____ 2/ _____ 3/ _____ 4/ _____ 5/ _____ 6/ _____ (23-28) CHOOSE THE WORD OR PHRASE THAT BEST FITS THE BLANK SPACE IN THE FOLLOWING PASSAGE

1/ _____ 2/ _____ 3/ _____ 4/ _____ 5/ _____ 6/ _____

(23-28) Choose the word or phrase that best fits the blank space in the following passage:

Are you looking for a cheap, clean, (23)___________ source of power that doesn’t cause (24)

________ or waste natural resources? Look no further than solar energy from the sun. At present,

most of our electricity comes from the use of coal, gas, oil, or nuclear power. This power could be

(25) ___________ by the sun. One percent of the solar energy that reaches the Earth is enough to

provide power for the total population. Many countries are already using solar energy. Solar panels

are placed on the (26) _________ of a house and the sun’s energy is used to heat water. The energy

can be stored for a number of days, (27) _________ on cloudy days you can use solar energy too.

Sweden has an advanced solar energy program. There, all buildings will be heated by solar energy

and cars will use solar power (28) __________ of gas by theyear 2015..