There was a woman in Detroit , who has two sons . She was worried ___28___ them , especially the younger one , Ben , __29__ he was not doing well in school . Boys in his class__30__ him because he seemed so __31___ . The mother  __32__ that she would , herself , have to get her sons to do better in school . She __33__ them to go to the Detroit Public Library to read a __34__ a week and do a report about it for her . One day , in Ben’s __35__ , the teacher held up a rock and asked if anyone knew it . Ben __36__ up his hand and the teacher let him __37__ . “Why did Ben raise his hand ?” they wondered . He _38__ said anything ; what did he possibly want to say ? Well , Ben not only __39__ the rock ; he said a lot about it . He named other rocks in its group and even knew ___40___ the teacher had found it . The teacher and the students were __41__ . Ben had learned all this from doing one of his book __42__ . Ben later went on to the _43_ of his class . When he finished high school , he went to Yale University __44_ at last became one of the best doctors in the United States . After Ben had grown up , he __45__ something about his mother that he did not know as a __46__ . She , herself , had never learned how to __47___ . 小题1: A．about B．on C．with D．over 小题2: A．because B．so C．but D．though 小题3: A．played with B．go through C．took off D．made fun of 小题4: A．clever B．hard C．slow D．quick 小题5: A．asked B．decided C．forgot D．heard 小题6: A．made B．let C．told D．considered 小题7: A．notice B．message C．book D．question 小题8: A．class B．room C．office D．lab 小题9: A．looked B．gave C．took D．put 小题10: A．think B．leave C．stand D．speak 小题11: A．always B．even C．quickly D．never 小题12: A．found B．played C．knew D．threw 小题13: A．whether B．when C．where D．why 小题14: A．afraid B．surprised C．worried D．unhappy 小题15: A．pictures B．exercises C．shops D．reports 小题16: A．top B．end C．back D．side 小题17: A．so B．and C．or D．however 小题18: A．learned B．remembered C．understood D．guessed 小题19: A．doctor B．child C．student D．teacher 小题20: A．read B．work C．teach D．show