<p class="ql-block">从这些数字，了解一棵树</p><p class="ql-block">1棵树</p><p class="ql-block">1天可以蒸发400公斤水</p><p class="ql-block">大约可制作200公斤纸浆</p><p class="ql-block">大约可制作750卷卫生纸</p><p class="ql-block">1年可贮存1辆车行驶</p><p class="ql-block">16公里所排放的污染物</p><p class="ql-block">1亩树林</p><p class="ql-block">放出的氧气可供65人呼吸一年</p><p class="ql-block">一年可吸收各种粉尘20~60吨</p><p class="ql-block">一年可吸收二氧化碳67公斤</p><p class="ql-block">可以释放氧气约49公斤</p><p class="ql-block">可吸收有毒气体二氧化硫4公斤</p><p class="ql-block">一棵50年树龄的树，</p><p class="ql-block">以累计计算——</p><p class="ql-block">■ 产生氧气的价值约31200美元；</p><p class="ql-block">■ 吸收有毒气体、防止大气污染价值约62500美元；</p><p class="ql-block">■ 增加土壤肥力价值约31200美元；</p><p class="ql-block">■ 涵养水源价值37500美元；</p><p class="ql-block">■ 为鸟类及其他动物提供繁衍场所价值31250美元；</p><p class="ql-block">■ 产生蛋白质价值2500美元；</p><p class="ql-block">■ 除去花、果实和木材价值，总计创值约196000美元。</p> <p class="ql-block"><b>1.中国植树节的起源</b></p><p class="ql-block">In ancient China, there was a tradition of planting trees in the Qingming Festival. The earliest tree-planting on the roadside was initiated by a man named wei xiaokuan from shaanxi province more than 1400 years ago.中国古代在清明节时节就有插柳植树的传统，历史上最早在路旁植树是由一位叫韦孝宽的人于1400多年前从陕西首创的。</p><p class="ql-block">In1979,China officially designated March 12 as "Arbor Day". Encourage individuals and teams to plant and care for trees in order to protect the environment.1979年，中国正式将每年的3月12日定为“植树节”。鼓励个人和团队种植和爱护树木，保护环境。</p><p class="ql-block"><b>2.国外植树节的起源</b></p><p class="ql-block">In order to protect the forests, make the environment more beautiful and maintain ecological balance, many countries in the world have set up the Arbor Day in accordance with their real situations.为了保护林业资源，美化环境，保持生态平衡，世界上很多国家都根据本国实际情况设立了植树节。</p><p class="ql-block">Compared to the other countries ,the United States of America was the first one to implement the tree-planting activities, which has more than 130 years old.在这些国家中，美国的植树节最早，已有130多年的历史。</p><p class="ql-block">On April 10, 1872, the first American Arbor Day was initiated by a journalist from Nebrask, and more than millions of trees were planted across the state of Nebraska.1872年4月10日，由内布拉斯加州一新闻记者发起美国第一个植树节。当天，内布拉斯加州全境种树超过100万棵。</p><p class="ql-block"><b>3.Talk about the Arbor Day</b></p><p class="ql-block">Arbor Day is a day to gather and celebrate trees and all that they do for us. It is a day to show gratitude by caring for current trees, planting new ones, and simply getting outside and enjoying the fresh air and beauty that they provide.</p> <p class="ql-block"><b>4.why do we need plant the trees?</b></p><p class="ql-block">为什么需要种树？</p><p class="ql-block">Tree color our world</p><p class="ql-block">Trees filter pollution from the air</p><p class="ql-block">Trees help recycle water</p><p class="ql-block">Trees prevent soil loss</p><p class="ql-block">Trees create shade</p><p class="ql-block">Tree give shelter from wind and rain</p><p class="ql-block">Trees provide homes for animals</p><p class="ql-block">Trees make food for humans</p><p class="ql-block">Trees make food for animals.</p><p class="ql-block">without trees there would be no life on this planet!</p> <p class="ql-block"><b>5.亲子对话：Planting with a Child 和孩子一起种东西</b></p><p class="ql-block">Mom: Would you like to grow some flowers and vegetables this spring?</p><p class="ql-block">Child: Yes, please!</p><p class="ql-block">Mom: Okay,papa have prepared some tiny plants.today we will go to your papa house .what would you like to plant?</p><p class="ql-block">Child: I would like to grow carrots, peas, tomatoes, and strawberry </p><p class="ql-block">Mom: OK, let's start with strawberry.Now let's scoop some soil out of the big bag and put it into our little pots, filling them almost to the top.Next, we dig a deep hole in the middle of the pot. Put the tiny plant into the hole and cover it with dirt.</p><p class="ql-block">Then, we gently place some more soil on top of them.</p><p class="ql-block">Child: Like this, Mommy?</p><p class="ql-block">Mom: yes.good job. Next use the water can water the plants.we also can use this spray bottle that is filled with water to give them a little water, like gentle rain.Plants need water to grow.</p><p class="ql-block">Child: They also need Light.</p><p class="ql-block">Mom: That is right, so we will put these on the sill to grow. remember to water them everyday.take care of them.</p><p class="ql-block"><br></p> <p class="ql-block"><b>6.parts of plants</b></p><p class="ql-block">Plants have different parts to them, just like you.</p><p class="ql-block">We have different body parts such as arms, legs ,eyes, a mouth and so on.</p><p class="ql-block">A plant has different parts too and they all have different jobs to do.</p><p class="ql-block">A plant is made up of many different parts.</p><p class="ql-block">The three main parts are the roots. the leaves and the stem.</p><p class="ql-block">Each part has a set of job to do to keep the plant healthy.</p><p class="ql-block"><b>What Do Different Plant Parts Do?</b></p><p class="ql-block">Plant parts do different things for the plant.</p><p class="ql-block">The roots absorb water and minerals from the soil and anchor the plant in the ground, and carries the</p><p class="ql-block">water and minerals to the leaves.</p><p class="ql-block">The leaves collect energy from the sun and make food for the plant.</p><p class="ql-block">A plant is a living thing,Plant a need light ,air and water space to germinate,使发芽</p><p class="ql-block">Leaves are made to catch the sunlight as plants need sunlight to make food，he process of plants making food is called photosynthesis.(光合作用)</p><p class="ql-block">Plants take carbon dioxide(二氧化碳) from the air and release oxygen back into the environment</p><p class="ql-block">Stems</p><p class="ql-block">Stems do many things. They support the plant. They act like the plant's plumbing system管道系统, conducting water and nutrients from the roots and food in the form of glucose葡萄糖 from the leaves to other plant parts.</p><p class="ql-block"> </p><p class="ql-block"> </p> <p class="ql-block"><b>7.What does a plant need to grow?</b></p><p class="ql-block">A plant is a living thing. Plants need light</p><p class="ql-block">air and water to germinate( grow)</p><p class="ql-block">Plants need plenty of sunlight. Plants use sunlight to make their own food. They trap light from the sun using their leaves. This is called photosynthesis.（光合作用）</p><p class="ql-block">Plants need plenty of water. Their roots</p><p class="ql-block">absorb water from the soil after it rains.</p><p class="ql-block">Plants also use nutrients from the soil,They absorb the nutrients using their roots.</p><p class="ql-block">Plants need air. They take carbon dioxide from the air and release oxygen back into the environment.</p><p class="ql-block">What does a plant need to grow?</p><p class="ql-block">Plants need sunlight, water,soil and space, air</p>