One of the most concening problems. Throughour the world is air pollution

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READING
One of the
most concening
problems
Throughour the
world is air pollution.
I what is considered
the main cause
of lung
cancer ? of L
A looking and heating
B Open Stoves
C
The
smoke
D Indoor air pollution
2
Which of the
NOT TRUE according to
floll wing
statements is
the passage?
A Many homes
do not have
ploper ventilation
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