通读下面短文，掌握其大意，然后从短文后面的括号内选出可以填入短文空格处的词。 Peter is a famous writer now. But he was not a 1______ student when he was young. He was often late for 2______ and didn't like doing his homework. Sometimes, he slept in class while the teacher was teaching. He didn't understand much, 3______ he always thought he understood everything. One day the teacher 4______ the students a question, 'When Mike was ten years old, 5______ brother Bob was twenty, Mike is fifteen now and 6______ is his brother Bob?' Peter said, 'That's easy. Bob is twice as old as Mike, so he is now thirty.' Another time, the 7______ in a science class asked, 'When it thunders (打雷), 8______ do we always see the light before we 9______ the sound?' 'But Miss,' said Peter quickly, 'Don't you 10______ our eyes are in front of our ears?' (A. asked  B. why  C. class  D. but  E. his  F. good  G. teacher  H. know  I. how old  J. hear)