----- Nội dung dịch tự động từ ảnh -----
Are you looking for a cheap, clean, effective (1)
power that doesn't cause pollution or waste natural resources?
Look no further than solar energy (2)
This power could be provided by the Sun. One percent of
the solar energy that reaches the Earth is enough to provide
power for the (3)_population.
Many countries are already using solar energy. Solar panels
are placed on the roofs of a house and the Sun's energy is used
(4)
of
our Sun.
water. The energy can be stored for a number of days;
so on (5)
21. A. source B. resource C.resources D. way
22. А. in
days you can use solar energy, too.
I
С. of
B. from
B. recent
D. above
D. enormous
D. heated
23. A. all
C.total
24. A. heat
B. to heat
C. heating
25. A. cloudy B. cloudless C.sunny
D. beautiful