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ENGLISH

18.
16. - 20. sorularda, aşağıdaki parçada numaralanmış
yerlere uygun düşen sözcük veya ifadeyi bulunuz.
A) upon
B) towards
People are in a constant search for different sources of energy.
C) off
Today, we meet most of our energy needs by burning fossil
fuels (16)---- coal, oil and natural gas. (17)----, one problem with D) into
fossil fuels is that when burned for energy, they release carbon E) against
dioxide and other gases. For instance, burning these fossil
fuels releases large amounts of greenhouse gases, which are
also released when they are retrieved from the earth. Namely,
extracting the fuels and processing them (18)---- their final forms
require fossil fuels, and thus produce carbon dioxide. Another
problem is that fossil fuels give a one-time-only burst of energy.
Therefore, since the supply of fossil fuels is limited and will finish
one day, civilisation will have to wait millions of years before any
more (19)----. That is why people will have to (20)---- a diversity
of fuel sources to produce energy in the future.

16. 19.
A) such as A) had existed
B) contrary to B) exist
C) due to C) existed
D) according to D) will be existing
E) except for E) would have exsited

17. 20.

A) In other words A) bring about
B) However B) rely on
C) Otherwise C) give away
D) For example D) put out
E) Accordingly E) sell out

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