第十二册习作四要求:我们在科学课上,已经做过不少有趣的实验了,请选择其中的一个,将实验经过写下来。也可以写自己设计的实验。只要你是有心人,就能设计出很多有趣的实验。你可以边实验观察边作记录,然后将实验的经过、结果写下来。写这样的作文,不是挺有意思吗? The twelfth volume excercises four requirements: We have done a lot of interesting experiments in the science class, please choose one of them, the experiment is written down. You can also write your own experiment design. As long as you are caring, you can design a lot of interesting experiments. You can make observations while experimenting, then write down the results of the experiment. Writing such a composition, is not quite interesting?