Tom 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 understood everything. One day the
teacher asked the students a question, "When Mike was ten years old, his brother was twenty. Now Mike is fifteen and how old is his brother?" Tom said,  "That's easy.  His brother is twice as old as Mike, so he
is thirty now.”
     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, sir," said Tom quickly, "don't you know our eyes are in front of our ears?"
1. What's Tom now?
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2. Was he a good student when he was young?
     ___________________________________________________________________
3. Is Mike Tom's brother?
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4. How old is Mike's brother when Mike is fifteen?
     ___________________________________________________________________
5. Was Tom's teacher pleased or angry?
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A. years        
B. years old        
C. old        
D. year old