How lucky we are today that we can protect ourselves    56    many    57    that once    58    death to thousands of people. This is because of work of a famous French scientist who suffered a great deal in his own life so that others might    59    .

Louis Pasteur was a bright boy,    60    his teachers said he was    61    . The reason for this was simple. Louis was very    62    with everything he did. He wanted to understand all and he asked many questions."Listen," shouted an angry teacher one day. "You are supposed to answer the question    63    asking them!"