听下面一段较长对话,回答以下小题。
14. How long does the man say a 30-year-old should exercise every day?
A.30-60 minutes. | B.60-120 minutes. | C.120-180 minutes. |
15. What is children's favorite physical activity?
A.Dancing. | B.Cycling. | C.Running. |
16. Who is the man probably?
A.An athlete. | B.A reporter. | C.A scientist. |
17. What will the man do next month?
A.Start running. | B.Publish a paper. | C.Take some training. |