A professor（教授） told hie students to go into the city slum（贫民窟） to study the life of 200 boys.He asked them to (1) a report about each boy's life and future.Every one of the students wrote,"He doesn't have any hope."
Twenty-five years (2),another professor read about the earlier study.He told hie students to (3) out what had happened to the boys.They found that 176 of the boys had become (4) doctors,teachers and secientists.
The professor was very (5) and decided to interview the now successful men.Luckily,all the men were living close by and he was able to ask each one,"What made you (6)?"Each one answered,"There was a teacher."
The teacher was (7) living there,so the professor found her and asked the oid woman (8) she had used to pull（拉） those boys (9) the slum,and change them into successful people.
The teacher's (10) began to shine（发光） and she said with a smile（微笑）,"It was really very easy.I loved those boys."