Unit 5第五单元 Biological characteristics 生物的特征 1.The green moss grows on the slate road; the silkworm pupa becomes a moth, breaks out the cocoon, completes the life cycle......石板路上长着绿已的青苔;蚕化蛹成蛾，破茧而出，完成生命周期...... 2..In our colorful world, there are many kinds of creatures. What do they have in common?.在我们这个五彩缤纷的世界里，生活着多种多样的生物它们有什么共同的特征呢? 15 Silkworms养蚕 1) Silk can be woven into silk and made into silk products蚕丝可以织成丝绸，做成丝制品。 2) Our ancestors started raising silkworms just over 3, 000 years ago. 早在3000多年前，我们的祖先就开始养蚕了。 3) How to raise silkworm?怎样养蚕呢? 4) Material package材料包 5) Silkworm leaf, brush (feather) paper box, etc蚕叶、毛笔（羽毛）纸盒等 6) Activity process活动过程 7) Understand the knowledge of sericulture了解养蚕的知识。 8) Where did the silkworm baby come from? 蚕宝宝是从哪里来的? 9) Silkworm life to experience...蚕的一生要经历…… 10) Silkworm breeding needs attention...养蚕需要注意.... 11) ●Let's raise silkworms.我们来养蚕。 12) Incubate silkworm eggs at appropriate temperature and humidity and collect them in time.在合适的温度和湿度下孵化蚕卵，及时收集。 13) Wash the mulberry leaves, dry, cut them and feed the silkworm. 将桑叶洗净、晾干、剪碎后给蚕喂食。 14) Clean up residual leaves, silkworm dung and sick silkworm in time.及时清理残叶、蚕粪和病蚕。 15) Record silkworm growth记录蚕的生长情况 16) Exchange the growth and change of silkworm life.交流蚕一生的生长变化情况。 17) I took pictures of silkworms at different times我拍了蚕不同时期的照片 18) Silkworm peeling蚕脱皮时…… 19) I found...我发现…… 20) Information Card资料卡 21) In spring, weimao hatched into larvae. After four molting, the body gradually became transparent and began to vomit the cocoon. About 4 days after the cocoon, the larvae become a silkworm pupa. After about 2 weeks, the silkworm pupa becomes a moth breaking the cocoon. 春天,委卯孵化成幼虫，经历4次蜕皮后，身体逐渐变得透明，开始吐丝结茧。结茧后4天左右，幼虫变成蚕蛹。再经过2周左右，蚕蛹变成蚕蛾破茧而出。 22) 2 After maturity, female and male moths cross the tail, female moths lay eggs, and a new round of life begins. 成熟后，雌、雄蚕蛾交尾，雌蚕蛾产卵，新一轮生命开始。 23) The life of the silkworm to go through the eggs, larvae, pupa, adults 4 stages. 蚕的一生要经历卵、幼虫、蛹、成虫4个阶段。 24) Outreach activities拓展活动 25) Check the data to understand the process of sao silk.查阅资料，了解缫(sāo)丝的过程。 |
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