单项选择题

Directions: You will hear three pieces of recorded material. While listening, answer each question by choosing A, B, C or D. You will hear each piece only once. Questions 11—13 are based on a report about obesity. You now have 15 seconds to read Questions 11—13. According to Dr. Serge Jabbour, what message does the study carry

A.People have to work early on their weight
B.Overweight people have shorter life expectancies
C.Smoking is damaging to life expectancy
D.If people are Overweight by their mid-30’s to mid-40’s, if they lose some weight later on, they will carry a lower risk of dying