初级中学课本植物学上册第三章种子,第二节课种子的成分,书中提出小麦粉脂肪取出的实验,在该实验中用乙醚做溶剂浸出麦粉中的脂肪,本人感到乙醚这种液体不仅易燃又最易挥发,而且在中学里是少有的,并且在教室里面对许多学生使用也比较危险,虽是用量不多,也能强烈的刺激人脑,影响学生听课,在本人过去的教学里用下列方法做实验的。 Junior high school textbook on the third chapter on the seeds of seed, the second lesson of the composition of the ingredients, the book proposed the removal of wheat flour fat experiment, in this experiment with ether as solvent leaching fat in wheat flour, I feel this ether ether is not only easy Burning and the most volatile, and is rare in secondary schools, and in the classroom for many students to use more dangerous, although the amount is not enough, but also strongly stimulate the human brain, affecting students to attend classes in my past teaching Experiment with the following methods.