Teacher Chen smiled when he heard this, "That's true, but this is an experiment that we took the children to do to observe transpiration, oh, and when the plastic is windy and rainy, our teacher will prop it up and make a temporary canopy." ”

Teacher Chen walked into the small garden when he spoke, and Mr. Chen put on rain boots, the mud potholes in the flower bed were pitted, and the rain boots were deep and shallow, and the soil was stained with half of his shoes.

Xiang Jingxing and Lin Shengxi glanced at each other, and the soil might have been stained like this.

"Work." Xiang Jingxing glanced at Deng Yuankun, Deng Yuankun nodded and walked up, and then picked a small piece of soil and put it in the evidence bag.

Teacher Chen looked at Deng Yuankun's movements and was a little panicked, as if he suddenly thought of something, and hurriedly

Chapter 51 Auntie is hitting her hand, please wait a moment,

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