听下面一段材料,回答第1至3题。 1. Why is the woman in the library? A. To have a meeting. B. To attend classes. C. To prepare for a test. 2. How many units will be included in the test? A. 3. B. 4. C. 6. 3. What is the relationship between the two speakers? A. Teacher and student. B. Classmates. C. Father and daughter.