单选

B

Jack is a famous writer now.But he said he was not a good student when he was young.He was often late for class and didn’t like doing his homework. Sometimes he slept in class while the teacher was teaching.He didn't understand much, but he always thought he under-stood everything..

One day the teacher asked the students a question, "When John was ten years old, his brother was twenty. John is fifteen now and how old is his brother?" Jack answered, "That's easy. His brother is twice as old as John, so he is now thirty. "

  • Another time, the teacher in a science class asked, "When it thunders(打雷) , why do we always see the light before we hear the sound? "But, Miss White," said Jack quickly, "can't you .see our eyes are in front of our ears?"  &
  • A.strong    
  • B.lazy      
  • C.clever     
  • D.well
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(      )30. Why can fish swim in the water? Jack's answer is ________ .

  • A.fish can't walk on land                  
  • B. fish can- t swim on land
  • C. fish can-t walk in the water   
  • D.fish has no legs or hands

(      )29. When it thunders, we always see the light before we hear the sound.______ It’s because

  • A. our eyes are in front of our ears
  • B. our eyes are cleverer than our ears
  • C. our eyes can see but our ears can-t
  • D.light goes faster than sound

(       )27. Jack didn't like to ________ when he was a student.

  • A. write compositions                        
  • B. do his homework
  • C. do the housework                       
  • D.learn science or biology
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