题目

   There is a popular saying, All of us have a Guardian Angel, guiding us.      Some of the greatest success stories of   1   have followed a word of    2    or an act ofconfidence by a loved one or a    3     friend. Had it not been for a confident wife, Sophia, we might not have listed Nathaniel Hawthome among the great   4   of literature. One cold evening when Nathaniel, a   5    man, went home to tell his wife, Sophia, tbat he was a failure and had been fired from his job in the customs. she   6   him with a cry of joy.     Now, she said 切除胰腺的狗排出的尿液，常会引来许多蚂蚁，其原因是尿液中含有较多的葡萄糖．（_______）