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Lesson 5 Asphalt Plants 沥青拌和设备Asphalt mixture is widely used in the road making.It is a high grade material of road surface. At present producing of asphalt mixture mechanized. Its productive equipment is called 'asphalt mixture plant ' .沥青混合料广泛地用于筑路施工中，它是一种高等级路面材料。
目前，沥青混合料的生产已经机械化，这种设备称之为沥青混合料拌和设备。
Asphalt mixing plant can be classified by the period of operation and the area serviced, asphalt mixing plants can be subdivided into stationary, semi-stationary and mobile; by their productive process :conventional ( or batch) and continuous( or drum) .沥青混合料拌和设备按照施工时间的长短及施工地点的不同可分为：固定式、半固定式和移动式。
按工艺流程则可分为间歇强制式和连续滚筒式。
Mobile asphalt plant is usually applied on small scale site and temporary occasion,stationary asphalt mixing plant is reverse of the mobile.移动式的沥青混合料拌和设备;多适用于工程量小以及工程周期短的施工地点。
而固定式则刚好相反。
四年级下册英语科普版第5 课文In the fifth lesson of our fourth-grade English science textbook, we embarked on a fascinating journey into the world of botany. This lesson introduced us to the wondersof the plant kingdom, its diverse species, and theessential role they play in our ecosystem. As we delved deeper into this topic, we discovered that plants are not just stationary beings that grow in the ground; they are dynamic and interactive components of our natural world.Plants are amazing creators of energy. Through the process of photosynthesis, they convert sunlight, water,and carbon dioxide into oxygen and glucose, providing nourishment to themselves and other organisms in the ecosystem. Imagine waking up every morning to fresh airthat is a direct result of plants' hard work. This process not only supports life on Earth but also contributes to maintaining a healthy environment.Plants also exhibit remarkable adaptability, thrivingin a wide range of environments from deserts to rainforests. Each species has unique features that enable them tosurvive in their respective habitats. For instance, cactistore water in their stems to survive the dry conditions of the desert, while rice plants grow prolifically in flooded paddies. This diversity in plant species ensures the sustainability of our planet's ecosystems.Moreover, plants provide us with essential resources such as food, medicine, and shelter. From the fruits and vegetables we eat to the fibers used in clothing and the wood for our homes, plants are a constant source of sustenance and comfort. Their value extends beyond ourdaily needs; they also hold cultural and spiritual significance in many communities.As we explored the world of botany, we learned that plants are not just passive beings; they have complex interactions with other organisms, including humans. For instance, plants communicate with each other through underground networks, sharing resources and warning each other of potential threats. They also form symbiotic relationships with animals, such as ants and bees, who help them pollinate and spread seeds.The lesson also highlighted the importance ofprotecting plants and their habitats. As human activitycontinues to impact the environment, it is crucial that we take measures to conserve and restore plant diversity. We must respect and appreciate the role plants play in our lives and strive to protect them for future generations. In conclusion, the fifth lesson of our fourth-grade English science textbook revealed the fascinating world of botany. It taught us about the vital role plants play in our ecosystem, their remarkable adaptability, and their incredible contributions to our lives. As young learners, we must cherish this knowledge and strive to protect the plant kingdom for a sustainable future.**植物的魔法：为四年级学生探索植物学的世界** 在四年级英语科普版下册的第五课中，我们踏上了一段迷人的旅程，深入探索植物学的世界。
L1一、单词与词组：1.练习、实践practice :________________\___________________\________________2.读、朗读read:________________\___________________\________________3.课本、教科书textbook:________________\___________________\_______________4.练习我的英语practice my English或者practicing my English_________________________\_______________________\______________________5.画画draw a picture或者drawing a picture_____________\_____________\____________6.和我的朋友聊天chat with my friends 或者chatting with my friends_________________________\_______________________\______________________7.做手工do crafts或者doing crafts ________________\___________________\________________8.洗衣服washing clothes:________________\___________________\________________9.做作业doing homework:________________\___________________\________________二、课文对话：1.What are you doing, Guoguo ? 你在做什么，果果？_______________________________________\_________________________________________________________________________\_________________________________________________________________________\_________________________________2.Hi, Mike. I’m practicing my English. 嗨，迈克。
【中文注释】五年级下册英语课文lesson 5
现在小学英语的教学，并不给学生教授单词的音标，也不针翻译单词的具体意思，只是让学生知道课文中语句、对话的大概意思。
这样的结果是，孩子们可能看着课文会读，离开课本就基本上什么都不知道了。
因此，将课本（北京出版社）中的语句按照单词、语句每个都翻译，让孩子在朗读的时候就知道每个单词、每个句子的准确意思，明明白白地学习，十分有意义。
这样，笔者将英语课文进行了逐词、逐句的翻译，供有需要的家长和孩子们使用。
祝你们在英语学习上能更进步。
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Lesson 5 WHAT DO FLOWERS DO?
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Unit5单词讲义Plant词性：名词、动词中文意思：植物；种植英文释义：a living organism that typically has leaves, stems, and roots; to put (a seed, for example) in the ground so that it will grow into a plant词源：来自拉丁语planta，意为“植物”例句：The garden is full of beautiful plants.（花园里种满了美丽的植物。
）固定搭配：plant a tree（种一棵树）；plant seeds（播种）近义词：flora, vegetationDemand词性：名词、动词中文意思：要求；需求英文释义：the act of asking for something forcefully or persistently; a need or requirement for goods or services词源：来自拉丁语demandare，意为“要求”例句：There is a high demand for this product.（对这种产品的需求很高。
）固定搭配：meet the demand（满足需求）；in demand（受欢迎的，有需求的）近义词：request, requirementRomantic词性：形容词、名词中文意思：浪漫的；浪漫主义的英文释义：of, relating to, or characterized by romance; admiring or seeking love and adventure rather than material wealth or security词源：来自中世纪欧洲的骑士文化和文学作品，强调爱情、冒险和激情例句：They had a romantic dinner under the stars.（他们在星空下享受了一顿浪漫的晚餐。
