Ⅰ.阅读理解
Cooking Kills Four Million People a Year
Polluted airborne particles(大气悬浮颗粒)kill 7 million people a year,reports the World Health Organization.
That news may not come as a surprise to anyone who has seen images of chimneys in Beijing,Delhi or Mexico.But those factories—or even the jammed roadways of modern cities—are not the biggest killer.Each year,some 4.3 million people die earlier than they should because of polluted air inside their homes,says the WHO.
