摘要
Wealthier lifestyles have brought with them an unhealthy diet and less exercise for many Chinese families Ding Wei,an elemen- tary school student in Beijing,is growing faster in weight than in height.One month ago,Ding celebrated her 11th birthday. Standing 1.3 meters tall,she now weighs 55 kg,heavier than her mother Xing Hong. The standard weight for a child of Ding’s age and