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Air Polluted during Holiday(中考阅读)  

2013-02-27 21:15:49|  分类: 中考阅读 |  标签: |举报 |字号 订阅

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       春节期间烟花燃放致国内大量城市空气污染加重。

Air Polluted during Holiday(中考阅读) - 称子英语 - 孙广趁教育教学工作室

 

       Festival fireworks caused readings of PM2.5 to skyrocket(迅速上升) in many cities during the Spring Festival, indicating worsened air quality.
  Figures released on February 17 showed that 43 percent of 74 Chinese cities reported higher-than-normal PM2.5 reading.The highest average reading in a single day was 426 micrograms per cubic meter, or 5.7 times the country’s standard of 75 micrograms.
  PM2.5 refers to fine particulate matter that is 2.5 microns(微米) or less in diameter.
  PM2.5 readings were excessive in all 74 cities for about half of the holiday period,which lasted from February 9 to 15, the Ministry of Environmental Protection said. Some cities also saw excessive readings for PM10 and sulfur dioxide (SO2,二氧化硫).
  The ministry blamed fireworks and unfavorable weather conditions for the worsened air quality.
  Four days after the massive fireworks displays that marked Lunar New Year’s Eve, Beijing’s municipal weather bureau issued a warning against exercising outdoors. Readings for PM2.5 hovered(徘徊) between 200 to 250 micrograms per cubic meter on the morning of February 13.The municipal observatory(气象台)said a lack of wind allowed the smog to linger,as well as repeated its call to reduce the use of fireworks.The local government also sent text messages to mobile phone users, asking them to use fewer fireworks.
  Sales of fireworks in Beijing dropped 37 percent year on year,with 260,000 cartons sold from January to the first day of the Lunar New Year.
  Beijing,which only permits fireworks to be set off during the Spring Festival,also shortened the period that fireworks were allowed this year to fromFebruary 9 to 24.

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