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  3. Air Pollution Air pollution can affect our health in many ways / with both short-term and long-term effects. / Different gro

Air Pollution Air pollution can affect our health in many ways / with both short-term and long-term effects. / Different gro

admin2015-07-28  40
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答案 Air Pollution Air pollution can affect our health in many ways / with both short-term and long-term effects. / Different groups of individuals are affected by air pollution in different ways. / Some individuals are much more sensitive to pollutants than are others. / Young children and elderly people often suffer more from the effects of air pollution. / The extent to which an individual is harmed by air pollution / usually depends on the total exposure to the damaging chemicals. / Examples of short-term effects include irritation to the eyes, nose and throat, and lung infections. / Other symptoms can include headaches, nausea and allergic reactions. / Long-term health effects can include lung cancer, heart disease, / and even damage to the brain, nerves, liver, or kidneys. / Continual exposure to air pollution affects the lungs of growing children / and may aggravate or complicate medical conditions in the elderly. / It is estimated that over 30 million people die prematurely every year in the United States / have suffered various diseases caused by air pollution.
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