Paragraph Three 　Tears have a more complex chemical composition than was imagined and they might act as one of the body's waste disposal system. Evidence from tear research may warrant a drastic change in our thinking about crying. Although there is

Paragraph Three 　Tears have a more complex chemical composition than was imagined and they might act as one of the body's waste disposal system. Evidence from tear research may warrant a drastic change in our thinking about crying. Although there is such a thing as people weeping to excess, crying in response to various emotions is a natural physical process that we should not be ashamed of. It is not a shame to let the tears f______.

flow