How to Add 5 Years to Your Life

　　Half an hour of exercise a day can add an extra five years to your life，a groundbreaking(开创性的) research has revealed.Health experts said that walking or cycling gently has big long-term benefits.According to the World Health Organization，research carried out in Britain and Denmark shows that gentle workouts(锻炼) and even housework every day can boost life spans by as much as five years.

　　The news will provide encouragement for those couch potatoes to start taking exercise.Britain is in the grip of an obesity epidemic(肥胖症)，with just 35% of men and 24% of women taking regular exercise.

　　"Encouraging people to be physically active every day has so many health benefits，" said Dr Marc Danzon，WHO regional director for Europe."These include reducing the risk of developing certain diseases and of becoming obese，as well as contributing to physical coordination(协调)，balance，strength and mental well-being.It is a very cost-effective public health tool." The organization is so concerned that the public is not getting the message on exercise that it will launch a "Move for Health" campaign to boost public awareness.

　　"The WHO encourages adults to take at least 30 minutes of moderate physical exercise a day，defined as any body movement that results in energy expenditure(消耗)，" said Dr Danzon."This includes walking，cycling，playing，housework，climbing stairs as well as sports." He added that children should take at least 60 minutes of exercise every day.

根据上文判断正(T)误(F)

1.Children should take more physical exercise than adults every day.(T)

2.The WHO has tried to improve people's knowledge of exercise by launching a campaign.(T)

3.People with an obesity epidemic in Britain seldom take regular exercise.(F)

4.Physical exercise brings the best possible profit to public health at the lowest cost.(T)