试验背景为了解开“冬青叶子不褪色”的谜题,我们决定对芹菜叶、菠菜叶、油菜叶和冬青叶中的叶绿素溶解情况进行一次对比实验。2004年12月22日,我们将这4种叶子浸没在等量的酒精里,然后水浴加热,并用温度计随时测量酒精溶液的温度,记录不同温度下4种叶子的变色情况,结果见表所 Background of the experiment To understand the mystery of “Ilex leaves do not fade”, we decided to conduct a comparative experiment on the chlorophyll dissolution in celery leaves, spinach leaves, rape leaves, and holly leaves. On December 22, 2004, we immersed the four leaves in the same amount of alcohol, then heated them in a water bath, measured the temperature of the alcohol solution at any time with a thermometer, and recorded the discoloration of the four leaves at different temperatures. The results are shown in the table.