9．A mother wanted to encourage her son to play the piano．She bought tickets to the concert of a great pianist．When they arrived at the theater，the mother found a friend．She stopped to talk to ber friend and her son ran off．
At eight o'clock，the lights began to dim（變暗），and the concert was set to start．The mother began to look for the boy．Then，she saw her 6-year-old son on the stage（舞臺）．He was on the piano bench playing Twinkle，Twinkle little star．
The mother was very shocked．Before she could get her son back，the famous pianist himself was on the stage and quickly moved to the piano．
"Don't stop．Keep playing，"he said kindly to the boy．The great pianist reached down with his left hand and began filling in the bass（低音部） of the song．Soon，his right arm reached around the other side and played a beautiful piece of music．Together，the two impressed people with their beautiful music．
In all of our lives，we receive helping hands-some we notice，some we don't．We also have lots of chances to give helping hands-sometimes we want people to know，sometimes we don't．Little of what we all achieve comes without other's help．What we receive we should give back．
51．A mother took her 6-year-old son to the theater in order toC．
A．see a great pianist
B．meet a friend
C．develop his interest in piano
D．play the piano
52．The mother feltDas soon as she found her soon playing on stage．
A．a(chǎn)ngry
B．excited
C．upset
D．shocked
53．When the pianist saw the boy playing on stage，heC．
A．ordered him to go down quickly
B．just stood beside him and listened
C．told him to keep doing it
D．taught him to play the bass part of thesong
54．According to the passage，which of the following is True？B
A．When they arrived at the theater，her son was missing．
B．Her son and the famous pianist played a beautiful piece of music together．
C．The concert was set to start at 8：20
D．Little of what we all achieve comes with others'help．
55．What can we learn from the story？D
A．Great people are always helpful and kind．
B．It's unnecessary to give a child a chance on stage．
C．A mother should take her son to theconcert often．
D．It's good to give a helping hand to others．
