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Try the following quick quiz.
1. According to a recent survey, which city had the worst air quality?
a) Taipei; b) Los Angeles c) Tokyo, or d) Hong Kong.
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2. What are some everyday problems that are related to bad air quality?
a) heart and lung disease; b) increases in hospital admissions and school
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absences; c) sore throats, coughing, irritated eyes, asthma, or d) all of the above.
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