【正确答案】 Dear all my friends,
It is my great honor to deliver a speech about sub-health prevention at the opening ceremony of this year's Sports Meeting. Recently, increasing numbers of students in China are becoming victims of sub-health condition, a new threat to their health. Symptoms include chronic fatigue, poor appetite, depression, short of breath and so on. Lack of exercise is one of the main factors causing sub-health problems. This sports meeting provides us with a great opportunity to rediscover the importance of exercise to health. I sincerely hope every student could join in sports game and develop the habit of taking exercise. Wish the Sports Meeting a complete success. Thank you.