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READING TEST
Part 1
Read the text. Fill in each gap with ONE word. You must use a word which is somewhere
in the rest of the text.
Breathing in air pollution could change our brain. A new study
shows that car fumes can
1
___________________ how our brain is wired – how parts of the brain connect with other
parts. The research is from the University of British Columbia in Canada. Researchers found
that car fumes can change our brain's connectivity in just two hours. A
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___________________, Professor Chris Carlsten, was surprised at what he found. He said:
"For many decades, scientists thought the brain may be protected from the harmful effects
of air pollution." He added: "This study, which is the first of its kind in the world, provides
fresh evidence supporting a connection between air pollution and [thinking]."
The traffic pollution study was on 25 adults. The researchers asked the adults to breathe in
car fumes in a laboratory. The research team
took brain scans of the
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___________________ for two hours. The
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___________________ showed that networks
in the brain that we use for thinking and remembering changed.
There were fewer
connections between the
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___________________. Another
professor said the research
was worrying. She said: "It's concerning to see traffic pollution
interrupting these
networks." The researchers said there needed to be more research to see how car fumes
change our brain. They also advised people to close car windows when in traffic. The
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