听下面一段短文，回答第1至第5五个小题。现在你有20秒钟的时间阅读这五个小题。该对话读两遍。
1. Why are the students skating?
A. Because they want to raise money for charity.
B. Because they love skating.
C. Because they are having a match.
2. How much does one raise for charity for every hour?
A. Five yuan.
B. Twenty yuan.
C. Ten yuan.
3. Who was the second to start skating?
A. Alison.
B. Sam.
C. Li Chen.
4. Who has been skating for four hours?
A. Alison.
B. Sam.
C. Sam and Lu Ning.
5. How long has Li Chen been skating?
A. For four hours.
B. For one hour.
C. For five hours.
