阅读理解。 This is a picture of a classroom(教室). The classroom is big and clean(干净). You can see a teacher's desk, five desks and six chairs. You can see a girl and a boy. Three books are on the teacher's desk. A pencil case is on a desk. Two pens and two rulers are in the pencil case. A schoolbag is behind a chair. A ball is on the floor. The girl is Lucy. She is eleven. The boy is Mike. He is twelve. They are good friends. Their teacher is Miss Green. She is not here. 1. How many(多少) desks are there in the classroom? ______________________________________. 2. Where are the two pens? _______________________________________. 3. Is the ball on the desk? _______________________________________. 4. Are Mike and Lucy good friends? _______ . 5. Who is their(他们的) teacher? _______________________________________.