Ех 1
final
solar
space
nuclear
carbon
science-
A exploration
B war
C frontier
D system
E fiction
F dioxide
2
* Complete the sentences with the
phrases from Ex. 1.
1 The Earth's atmosphere contains
gas.
2 Space is often referred to as the .
; the unexplored territory.
3 The.
is made up of
all the planets that orbit the sun.
4 Every new step we make in
advances our knowledge of the universe.
5 The
film is set on Mars.
6 The threat of is frightening.​

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