完形填空(10小题，每小题l分，共10分) There was a woman in Detroit, who had two sons. She was worried about them. especially the younger one, Ben, because he was not doing well in school. Boys in his class made jokes about him because he seemed so ____. The mother_ _that she would herself have to get her sons to do better in school. She told them to go to the Detroit Public Library to read a book a week and do a book report for her. One day, in Ben’s__ , the teacher held up a rock and asked if anyone knew it. Ben put up his hand and the teacher let him __ . “Why did Ben put up his hand?” his classmates wondered, “He _ _said anything. What could be possibly want to say?” Well, Ben not only _the rock, but also said a lot about it. He named other rocks in its group and even knew __the teacher had found it. The teacher and the students were __. Ben had learned all from doing one of his book __. Ben later went on to the __ of his class. When he finished high school, he went to Yale University and at last became one of the best doctors in the United States.