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7. The
can be controlled by the stoppage of leakage from the radioactive materials including the
nuclear reactors, industries and laboratories.
B.visual pollution
C.air pollution D.radioactive
A.light pollution
pollution
8. English is
A.native language
language
9. Australia has the biggest
A.natural beauty
of Australia and Singapore.
B.both A and C
C.official language
D.second
in the world.
B.puzzling games
could possibly be avoided by better construction, safety systems, early warning and planning.
C.cattle station D.tallest building
10.
A.Earthquakes B.mudslide
C.droughts
D.forest fire