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记2020年11月22日生物小实验——绿叶在阳光下合成淀粉
黑暗处理完毕后,对三片叶子进行半遮光,然后放在阳光下晒2-3小时。遮光处理完毕的叶子,肉眼看与平时没什么不同。用酒精来蒸煮加
2020-11-22
145 3 0其它Happy Labour Day
Today is Labour Day. We\'ll Outdoor activities.We go to66 Parent-Child Activity Base by bus.We and parents played some ga
2019-05-03
171 0 0其它