完形填空（共10小题；每小题1分，满分10分）
阅读下面一篇短文，理解大意，然后从各小题的四个选项中选出一个最佳答案，使短文连贯完整。
There was a woman in Detroit, who had two sons. She was worried about them, especially the       one, Ben, because he was not doing well in school. Boys in his class played jokes on him because he seemed so slow. The mother decided that she would help her sons to do well in school by      . 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 class, the teacher held up a rock and asked       anyone knew it. Ben put up his hand and the teacher let him      . “Why did Ben raise his hand?” all of his       whispered and wondered. “He       said anything. What could he possibly want to say?” To their surprise, 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 other students were amazed. Ben had learned this from doing one of his book reports.
Later Ben became the       student of his class. When he finished high school, he went to Yale University and       became one of the best doctors in the United States.

A．young B．youngest C．younger D．more younger

A．herself B．himself C．themselves D．her

A．that B．if C．how D．why

A．think B．leave C．ask D．answer

A．classmates B．students C．teachers D．friends

A．always B．ever C．sometimes D．never

A．found B．played C．knew D．heard

A．whether B．what C．where D．why

A．top B．slow C．low D．rich

A．at first B．at the end C．at last D．now