听下面一段材料,回答第1-5小题。
1. Why does Rosa swim 15 to 30 kilometers a day?
A.She spends all day at the swimming pool.
B.She knows that training is important.
C.She is hoping to win her first world swimming record (纪录).
2. What is the reason that Rosa was able to sleep for 10 hours?
A.Her family is quiet in the evening.
B.She likes getting up late.
C.She is very tired when she goes to bed.
3. How long does Brad run a day?
A.30 to 40 kilometers.
B.40 to 50 kilometers.
C.50 to 60 kilometers.
4. What kind of life do most sportsmen have?
A.A quiet life.
B.A noisy life.
C.A busy life.
5. What's needed for most sportsmen?
A.Much training, good food, plenty of sleep and a careful life.
B.Much training, not smoking, not drinking and plenty of sleep.
C.Much training, much food and plenty of sleep.