IV. Choose the correct option for each blank to complete the
passage.
devices and modern conveniences (1)
In the modern world, people depend on energy to power their everyday lives. A wide range of power-run
living without those conveniences, the fact is that many supplies of energy are running out rapidly. Scientists are
and although it may seem that we will not be in danger of
constantly (2)
will continue to enjoy the benefits of abundant energy will depend (3).
new sources of energy to keep modern society running. Whether future populations
the success of this search.
these supplies are limited, and they are
Coal, oil, and natural gas are now being used widely. (4)
a major source of pollution. Therefore, the existing alternative energy sources must be improved or further
explored and developed. These include nuclear, water, solar, and wind power, as well as energy from new, (5)
types of fuels. Each of these, however, has advantages and disadvantages.
A. are used
B. used to
C. are using
D. use
A. looking into
C. researching
A. on
D. in
A. Moreover
D. However
A. polluting
1.
2.
3.
4.
5.
B. searching for
B. for
B. Because
B. polluted
C. with
C. Although
C. nonpolluting
D. finding
D. pollution