四、英文作文：In many countries, Taiwan included, the gap between the rich and the poor has widened. In sociology, a term called “M-shaped society” was coined to illustrate the gap of wealth distribution between two major groups: the rich and the poor. Yet, such a gap can bring potential threat to the development of a society. Thus, some believe “taxation” may be a good way to address the income gap. Please write a 250-word essay to present your analysis on such an idea.