【正确答案】 1、正确答案：Smile is the most fluid and rapid facial expression, rippling from eyes to the mouth corner. Indeed, smile is the light on the face, with which the eyes look brighter and the teeth glisten between lips. Just as we are unable to hold lightening as the replacement of the sun and the moon high in the sky illuminating everything, we can"t transform smile into a fixed expression shared by everyone either. Once advocated deliberately, the natural humor becomes artificial. That is why humor isn"t something to be advocated. Otherwise, the natural overflow would turn out to be the imitated , and the flexible would end up with the rigid. This humor itself is the source of humor and laugh is the laughingstock. A truly humorous man has his sense of humor: he smiles alone with pleasure and calmness, taking a breath of fresh air for the dreary life.