观察草履虫是学习动物学的一个重要实验.但在显微镜下,草履虫游动得特别快,如果草履虫在液滴中的密度不大,寻找和观察都比较困难.目前普遍采用的方法是在载玻片的液滴中加些棉纤维,从而限制草履虫的运动范围.然而,这种问题并不能减慢草履虫的运动速度,加上棉纤维还会遮挡视线,影响观察效果.为了更好地提高这个实验的观察效果,我们进行了以下的实验: Observing Paramecium is an important experiment for learning zoology. However, under the microscope, Paramecium swims very fast. If Paramecium has low density in droplets, it is difficult to find and observe. Currently, the commonly used method is Adding some cotton fibers to the droplets of the slides limits the range of movement of the paramecium. However, this problem does not slow down the speed of the paramecium, and the cotton fibers also block the line of sight and affect the observation. To better improve the observations of this experiment, we conducted the following experiments: