小题1:B
小题2:D
小题3:D
小题4:B
小题1:根据The teacher’s job is to show his students how to learn.，故选B。
小题2:根据They would ask many questions as they read and they did thousands of experiments可知一个学生想要学得更好，对于他来说最重要的事就是学习的时候多思考。
故选D。
小题3:根据They worked hard all their lives, wasting not a single moment. They would ask many questions as they read and they did thousands of experiments，故选D。
小题4:They would ask many questions as they read and they did thousands of experiments。故选B。