There was a woman in Nanjing , who had two sons. She was worried about them, especially(尤其) the younger one, Ben,       he was not doing well in school. Boys in his class made jokes about him because he seemed(看似) so       .
The mother        that she herself would have to get her sons to do better in school. She told them to go to the library to read a      a week and do a report about it for her.
One day, in Ben’s       , the teacher held up a rock（石头） and asked if anyone knew it. Ben put up his hand and the teacher let him       . Why did Ben raise his hand? They wondered（想知道）. He    said anything, what could he possibly want to say?
Well, Ben not only        the rock; he 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 this from doing one of his book       .
Ben later went to the        of his class. When he finished high school, he went to University （大学）and at last became one of the best doctors in the United States.
After Ben grew up, he        something about his mother that he did not know as a    .
She, herself, had never learned how to       .

A．because B．so C．but D．though

A．clever B．had C．slow D．quick

A．asked B．decided C．forgot D．heard

A．notice B．message C．book D．question

A．class B．room C．office D．lab

A．think B．leave C．speak D．answer

A．always B．even C．quickly D．never

A．found B．played C．knew D．threw

A．whether B．when C．where D．why

A．afraid B．surprised C．worried D．unhappy

A．pictures B．exercises C．shops D．reports

A．top B．end C．back D．side

A．learned B．remembered C．understood D．guessed

A．doctor B．child C．student D．teacher

A．read B．work C．teach D．show