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2.What should we do to
B. take
water?
3.The problem with fossil fuels is that they are not
A. cut
A. expensive
4.
A. Renewable
B. limited
C. save
C. renewable
source of energy is the source that can't be replaced after use.
B.Natural
5.We are looking for cheap, clean and
B.efficient
C. Effective
sources of energy.
C. serious
on our roof for the heating and hot water.
B.equipment
C. cracks
light bulbs in our homes.
C. a bit energy
C.look
for a new energy source to replace coal now.
coal as well as wood to make a fire for cooking?
C. reserve.
D. waste
D. non-renewable
D. non-renewable
D. dangerous
D. solar panels
D. efficient
D. looking
D. produce
wind power on a commercial basis today.
A. effective
6.We should put
A. solar energy
7.We should use
A. low energy
B.little energy
8. They
A. looked
B.are looking
9.Do your parents
A. burn
B. heat
10.Many countries in the world
A. used
B. will use
11.Now, automakers
A. developed
B. develops
12.Now, humans
on the sun and word for heat.
A. rely
B. relies
C. are relying
13.Look! The students
soccer on the school yard.
A. is playing
B. are playing
C. will play
D. paly
15.Solar energy, air and water are
A. renewable
B. limited
C. restricted
D. narrow
C. are using
fuels cells that extract hydrogen from gasoline.
C. are developing
D. uses
D. will develop
D. relied