上海市杨浦区2019-2021年三年中考二模英语试卷分类汇编：阅读选择

上海市杨浦区 2019-2021年三年中考二模英语试卷分类汇编 阅读选择 2021年上海市杨浦区九年级二模英语试题 A. Choose the best answer. A Fun Plant Experiment to Try at Homel! Without water, plants would die. Do you know how water gets from the roots of a plant to the rest of the plant? The water travels through tiny tubes that from pathways to all parts of the plant. This is similar to how blood flows in our bodies. And here is an experiment to prove it. Materials · a celery stick · a sharp knife · a glass of water · some red food colour 60 1）Put a few drops of the red food colour in the glass of water. 2）Cut the bottom of the celery stick and place the celery in the water. 3）Leave the celery stick in the glass of water for several hours. 4）Remove the celery stick and cut it into pieces horizontally, that is, across the stem（茎）. Observation Red food colour is present in all cross sections from the bottom of the celery stick right up to the leaves. Explanation The water, along with the red food colour, has been transported