听下面一段材料，回答第1～3题。 1. What is the possible relationship between the two? A. Teacher and student. B. Policewoman and student. C. Classmates. 2. What kind of bike does the man have? A. A mountain bike. B. A red bike. C. Both A and B. 3. Why does the woman say that there're NOT many chances of finding the bike?. A. Because there're too many such bikes on campus. B. Because there're too many bikes on campus. C. Because the bike is hidden