听下面一段材料,回答第1-3题。 1. What used to happen in the classroom? A. Children sat in the classroom for hours. B. Children could learn by themselves. C. Children liked to sit in the classroom. 2. Which is the RIGHT teaching way according to this passage? A. To make children learn at all. B. To let children learn by themselves at all. C. To help children learn and discover things. 3. Why CAN'T some of the children find jobs? A. Their parents won't allow them to do so. B. The teachers won't allow them to do so. C. They are too young to be allowed.