breathless quickly, and that I wasn't enjoying sport as much, When I was taken off the school football team because I was unfit, I knew it was time to quit smoking.

I am sending you some advice I found on the Internet. It might help you to stop and strengthen your resolve. I do hope so because I want you to live as long and healthy a life as I have.

Love from

Grandad

24.The first paragraph shows James' grandad 　　　　.

　　A. has nothing to do at home B.lives a healthy life

　　C.is tired when returning from a long bike trip D.likes sitting in the garden

25.The phrase "withdrawal symptoms" in para3 probably means _______.

A. 分离症状 B.撤退现象 C.断瘾症状D.戒毒反应

26. In what way did the old man try to persuade his grandson to give up smoking?

A. Using scientific theory B. His failure in love

C. His sports activity D. His own experience

27. According to the letter, James' grandad 　　　　.

　　A. didn't give up smoking B. used to be a member of the school football team

　　C. is lonely D. wrote down the advice from his experience

　　C

　　Teenagers' fitness is now a major concern, to which physical exercise is very important. It reduces stress and improves fitness. Exercise makes your body strong, and helps you to keep the right body weight. Sports scientist Dr. Helen Lopez offers the following advice to teenagers: " First, you need to find out your present level of fitness, Then you can design a programme that will help you become healthier."

　　Dr. Lopez suggests that there are three levels d fitness that need a change of lifestyle. "Overweight" means that the person gets very little exercise and often has a serious weight problem. "Inactive" means that the person does not join in many physical activities, but is not seriously overweight. "Active" refers to people who take part in sports and other physical activities, but do not have a high fitness level.

　　According to Dr. Lopez, overweight teenagers should keep active to keep healthy. "Ride a bike, play volleyball or basketball for a while, and go for a twenty-minute walk each day. All these will help to burn calories." Inactive teenager should do similar activities, but add some bending and stretching exercises, such as push-ups and sit-ups, starting with twenty of each a day. "Inactive people can take a little more exercise than overweight people because their bodies are stronger." said Dr, Lopez. The same principle applies to active teenagers.

　　Dr. Lopez suggests one hour a week or more on running and other forms of intensive exercise, together with fifteen minutes a day spent on stretching and bending activities. "These are really important in order to prevent injures." Dr. Lopez said. Some weight-training and other body-strengthening exercises could also be planned in the programme in order to increase the person's strength.

28. What can we learn from the passage ?

　A. Active people always have a high fitness level.

　B. Overweight people always take more exercise.

　C. Inactive teenagers are not seriously overweight

　D. Keeping fit means changing teenagers' lifestyle.

29. Which of the following statements is NOT the reason why physical exercise is important ?

A. It can make the teenagers grow taller. B. It can help teenagers become healthier.