阅读理解。 Here is a photo of Mr White's family. The man in the photo is Mr White, the father. The woman is the mother. They have (有) two sons. The boy behind (在……后面) Mr White is Dave. He is ten. The boy behind Mrs White is Paul. He is eleven. Dave and Paul are in the same school (同一所学校), but not the same grade (年级). Dave is in Grade Five, Paul is in Grade Six. They are good students. 1. There are (有) _____ people in the photo. [     ] A. five B. there C. four D. six 2. Paul is behind _____. [     ] A. Dave B. Paul C. Mr White D. Mrs White 3. Mr and Mrs White have _____. [     ] A. one boy and one girl B. two boys C. two girls D. one boy 4. Dave is _____ brother. [     ] A. Mr White's B. Paul's C. Dave's D. Mrs White 5. How old are Paul and Dave? [     ] A. Ten and eleven. B. Eleven and ten. C. Eleven. D. Ten.