Road _________ is a serious danger to children’s ______. That’s the worrying conclusion of the longest and largest study* ever undertaken into the effects of traffic fumes on child ___________. Researchers from the University of Southern California spent 13 years studying children who lived within 500 meters of busy highways. They found that most of the 3,600 children in the study had __________ weakened lungs. Researchers said this meant the children could have _________ problems for the rest of their lives. The main author of the study W. James Gauderman said: "Someone suffering a pollution-related _______ in lung function as a child will probably have less than healthy ______ all of his or her life.” He added: "If you live in a high-pollution area and live near a busy road, you get a doubling of the _______.”
development
lungs
damage
significantly
health
breathing
deficit
pollution
Gauderman and his team conducted their ________ on youngsters who lived near busy roads. Once a year, the team measured the children's lung _____. It checked how much air the children could release in one breath and how quickly it could be released. The team found that by their 18th ________, children who lived within 500 meters of a highway _______ three per cent less air compared with children who lived one-and-a-half kilometers away. Further, the _______ children’s lung power was seven per cent ______ in the rate at which they could exhale. Gauderman said that: "Even if you are in a relatively low ________ pollution area, living near a road produces lung problems." About a third of the children moved away from busy roads during the study but stayed near the same _________. Their lungs developed more healthily.
Exercise 11. Put the words in the correct column.
Minerals, atoms, living organisms, cells, rocks, lands, history of the earth, chemical bonds, rivers
