For this part, you are allowed 30 minutes to write a composition on the title Changes in the Ownership of Houses. You should write at least 120 words and base your composition on the chart and the outline given below in Chinese. 1.根据图形描述该市住房产权的变化 2.分析产生变化的原因 3.说明这些变化对于个人和社会产生的影响