同学们看到这个题目后,可能会说:“土壤不就是土吗?土有什么可实验的?”如果你自己动手做了以下实验,你一定会感到,许多平时我们看起来很平常、很一般的东西,经过实验,你就会发现许多科学知识和意想不到的结果。下面请大家随我一同做这些实验吧。 After seeing this topic, the students may say, “Isn’t the soil the soil? What experiments can be done in the soil?” If you do the following experiments yourself, you will feel that many of us usually look ordinary and very In general, after experimenting, you will discover many scientific knowledge and unexpected results. Now let’s do these experiments with me.