麦克上小学四年级了。十一岁的他对什么都充满了强烈的好奇心,最近,他又留意上了校园里的一条小狗。麦克对这条小狗的兴趣在于,为什么它个头那么小,却能发出比大狼狗还要高亢雄浑的吠声。是不是这条狗的身体里藏着什么特别的东西呢?麦克想,要是能有机会看看小狗的内脏器官,就什么都清楚了。这个念头一直萦绕在他的心头,为此,麦克做了充分的准备。这天下午放学后, Mike was in fourth grade. Eleven years old, he was full of intense curiosity, and recently he noticed a puppy on campus. Mike’s interest in the puppy lies in why it is so small that it can emit a bark of greater vigor and vitality than the big dog. Is there anything special in this dog’s body? Mike thought it would be clearer if he could have a chance to look at the dog’s internal organs. This idea has been lingering in his heart, for which, Mike made full preparations. After school this afternoon,