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贵州省遵义市2017高考英语一轮阅读理解统练五 【2016高考英语阅读理解训练】阅读下面短文，选择最佳答案。 Leaders of the World Health Organization say they are concerned about the air quality and health efiects on citizens during a recent outbreak of heavy pollution in Beijing．Still，they said they were unsure of the exact amount the air pollution takes on any person’s body，casting doubts on local reports tying the area’s dirty air to particular cases of illness． Speaking at a briefing(情况介绍会)on Tuesday，the WHO’s Western Pacific regional director，Shin Young—Soo，cited(列举)reports about poor air quality causing lung cancer in recent weeks. “The WHO is skeptical of the information，”she said．“We’re cautious of whether the illness is related to air po11ution. We know it has an impact on health，but we don’t know how much．” The officials didn’t cite particular reports．The comments follow a number of articles since last year connecting some cases of diseases like lung cancer with pollution，．including one in November regarding an 8-year-old girl． The health impact of Beijing’s gray skies has been on the minds of many over the past week。Local authorities on Tuesday preserved an orange alert(警报)一the city’s second highest pollution-warning level—and again warned people to stay indoors．Experts widely agree that small particulates(颗粒) known as PM2.5 carry significant short-and long-term health risks，particularly with children．Other | 
