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北师大版小学数学四年级下册《蚕丝》说课稿

  • 湖北省荆门市2019年中考语文真题试题

    湖北省荆门市2019年中考语文真题试题

    农谚有“小满小满,麦粒渐满”的说法。此时,小麦度过一冬的休眠期后,经过返青拔节,抽穗开花,亟须熏风暖熟,虽然仍是一片青绿,但有着一股蓄势待发的劲头。麦穗已经抽齐,麦粒鼓着腮帮一般,泛出一层透明的绿色。等到这晶莹的嫩绿变为黄绿,麦子也即将成热了。农谚又云“小满未满,还有危险”。小麦成长的最后阶段灌浆期十分关键,籽粒才刚刚盈实,若碰到灾难天气或病虫害,麦粒未经过充分的乳熟期,小麦的品质便会大打折扣。

  • 湖北省荆州市2019年中考语文真题试题

    湖北省荆州市2019年中考语文真题试题

    那位教师立刻用这束树枝朝她颈背上狠狠抽打了十几下。彭斯的眼里没有涌出一滴眼泪。我目睹着这一场面,不由得升起了一股徒劳无益的怒火,气得双手直发抖,只得停下手中的活儿,可是她那张若有所思的脸上,却神色如常,没有一点变化。“倔脾气的姑娘!”斯凯契德小姐嚷道,“你那邋遢习惯怎么也改不了啦。把扫帚拿走!”彭斯遵命照办了。当她从藏书室里出来时,我仔细朝她打量着。她正把自己的手绢放回口袋,瘦削的脸颊上还有一丝泪痕在闪闪发光。

  • 湖北省宜昌市2019年中考语文真题试题(含解析)

    湖北省宜昌市2019年中考语文真题试题(含解析)

    写字画线最根本的一条是力量基本要匀,不能忽轻忽重。古人名之曰“平”,这是笔法的基本規律,“如锥画沙”就是对“平”字最好的形容,只有明白了“平”的道理,然后才能在“平”的基础上求变化,这就是笔法中的提、顿、轻、重,疾,徐等变化,用笔的变化是无穷的,但无论怎么变化都要力量基本平均。所用力量不能悬殊太大,黄宾虹说幼时学书法,开头写“大”字只有五个“点”,就是起落笔太重、行笔太轻,力量悬殊,形成线条的空虚。书家把这叫做“系马桩”。

  • 湖北省咸宁市2019年中考语文真题试题(含解析)

    湖北省咸宁市2019年中考语文真题试题(含解析)

    微塑料在海洋中的扩散性更强。荷兰科学家曾研究过太平洋塑料垃圾带,发现塑社虽然只占到塑料总质量的8%,但是却占到浮在此区域塑料面积的94%。微塑料在海洋中无处不在,且具有很大的隐藏性。2017年,我国“蛟龙号”载人潜水器从大洋深处4500米处带回的海洋生物,在其体内竟也检出微塑料的成分。微塑料更容易进入食物链,对海洋生态系统造成严重的影响。美国有关人士曾指出,丢弃在水中的塑料拉圾已危害到逾600种海洋生物,造成鲸鱼、海龟、海豚、鱼和海鸟等受伤或死亡。

  • 湖北省咸宁市2019年中考语文真题试题

    湖北省咸宁市2019年中考语文真题试题

    那么,微塑料来自何处呢?海洋微塑料既有海源方面的输入,也有陆源方面的输入而陆源方面的输入是海洋中塑料污染的主要来源,主要是人类在生产和生活中丢弃的塑料废弃物等。除了望料拉圾外,人类常用的洗涤剂、护肤品及工业原料等也含有大量微塑料成分,这些微塑料成分随污水排出,往往会随着陆源垃圾输入到海洋当中。

  • 湖北省十堰市2019年中考语文真题试题

    湖北省十堰市2019年中考语文真题试题

    这套说法你一定经常听说,它被不少人奉为养生经典。然而,就在2018年11月2日,这套理论终于被“官宣”为伪科学,美国圣地亚哥法庭判罗伯特.欧阳赔偿一名癌症患者1.05亿美元,这位罗伯特就是大名鼎鼎的酸碱体质理论创始人,他将红肉、糖、蛋、奶制品、酒精、咖啡等归类为酸性食物将蔬菜、水果,谷物、鱼类等归类为碱性食物。他不仅写了四本书来推广这套理论,还大胆地以这套理论为依据治疗癌症患者,癌症患者按照他的要求,放弃化疗,采用他独创的碱性疗法治疗,吃碱性食物,注射高达500美元一针的小苏打针剂,最终导致癌症患者病情恶化到四期。

  • 2019年北京市中考语文试题试卷含答案解析

    2019年北京市中考语文试题试卷含答案解析

    舜发于畎亩之中,傅说举于版筑之间,胶鬲举于鱼盐之中,管夷吾举于士,孙叔敖举于海,百里奚举于市。故天将降大任于是人也,必先苦其心志,劳其筋骨,饿其体肤,空乏其身,行拂乱其所为,【甲】所以动心忍性,曾益其所不能。

  • 湖北省襄阳市2019年中考语文真题试题

    湖北省襄阳市2019年中考语文真题试题

    钱学森经历了重重的艰难险阻后,终于回到了祖国。回国后他受到了最高规格的待遇,主席经常和他在一起,讨论国家以后的发展。主席曾经问过钱学森,为什么要执意回国,美国的待遇这么好,回来后悔吗?钱学森异常认真地说:“苟利国家,不求富贵。”八个字掷地有声,听者无不为其鼓掌。2018年 10月11日下午,在边境扫雷行动中,面对复杂雷场中的不明爆炸物,杜富国对战友大喊:“你退后, 让我来!”在进一步查明情况时突遇爆炸,他英勇负伤,失去双手和双眼,同组战友安然无恙。“我只是做了一个军人应该做的选择。”这个阳光帅气的小伙,对雷场救下战友这个选择,从未后悔过。

  • 湖北省武汉市2019年中考语文真题试题(含解析)

    湖北省武汉市2019年中考语文真题试题(含解析)

    “鱼跃练川抛玉尺,莺穿丝柳织金梭。”一条鱼跃过像白绸一样的水面,如同一根玉尺抛在白绸子上;黄莺穿过像丝一样的柳条,像一枚金梭在许多条丝线中穿织。你看,多么漂亮,而且对仗工整,但只是描述风景外在的形象,没有内心的感动。这样,即使写出再漂亮的句子,也只有文字和技巧,缺乏诗歌应有的生命。“群鸡正乱叫”是杜甫的诗句,只看这一句,好像不是好诗。但读诗不能只看一句,要看整体的传达。《羌村》整组诗,表现的是诗人历经战争离乱,与妻子儿女长期分别后回家重逢的情形,“群鸡正乱叫”这句诗就有了一种朴实真切的叙写,更有一份亲切热烈的感情。

  • 湖北省黄石市2019年中考语文真题试题(含解析)

    湖北省黄石市2019年中考语文真题试题(含解析)

    奇异果的第一站从它的发源地一—湖北宜昌市夷陵区开始。谁是尝鲜这种果子的第一人已无从得知,然而它流传最广的名字却是“猕猴桃”:一说是,这种果子外皮一层绒毛,状似猕猴而得名;而另一种说法则称是因为生长在山间的果实常被猕猴食用。这名称一直沿用至今。发源于夷陵山间的猕猴桃,在数千年间缓慢地持续着它的旅程一向北延伸到陕西、甘肃、河南一带;向西南去往贵州、云南和四川,在长江中下游流域,尤其夷陵区雾渡河最为多见。虽然历史记载源远流长,但我国的猕猴桃却一直都未被驯化栽培。野外的猕猴桃,如果生在深山中,多被猴子们摘去果腹;即使被少数人家移植到庭院里,猕猴桃也只是用来观赏而非食用。归根结底,直到几十年前,猕猴桃在国内还只是一种野果。

  • 湖北省黄石市2019年中考语文真题试题

    湖北省黄石市2019年中考语文真题试题

    奇异果的第一站从它的发源地一—湖北宜昌市夷陵区开始。谁是尝鲜这种果子的第一人已无从得知,然而它流传最广的名字却是“猕猴桃”:一说是,这种果子外皮一层绒毛,状似猕猴而得名;而另一种说法则称是因为生长在山间的果实常被猕猴食用。这名称一直沿用至今。发源于夷陵山间的猕猴桃,在数千年间缓慢地持续着它的旅程一向北延伸到陕西、甘肃、河南一带;向西南去往贵州、云南和四川,在长江中下游流域,尤其夷陵区雾渡河最为多见。虽然历史记载源远流长,但我国的猕猴桃却一直都未被驯化栽培。野外的猕猴桃,如果生在深山中,多被猴子们摘去果腹;即使被少数人家移植到庭院里,猕猴桃也只是用来观赏而非食用。归根结底,直到几十年前,猕猴桃在国内还只是一种野果。

  • 湖北省黄冈市2019年中考语文真题试题

    湖北省黄冈市2019年中考语文真题试题

    我常想,读书人是世间幸福人,因为他除了拥有现实的世界之外,还拥有另一个更为浩瀚也更为丰富的世界。现实的世界是人人都有的,而后一个世界却为读书人所独有。由此我想,那些失去或不能阅读的人是多么的不幸,它们的丧失是不可补偿的。世间有诸多的不平等,财富的不平等,权力的不平等,而阅读能力的拥有或丧失却体现为精神的不平等。一个人的一生,只能经历自己拥有的那一份欣悦,那一份苦难,也许再加上他亲自感知的那一些关于自身以外的经历和经验。然而,人们通过阅读,却能进入不同时空的诸多他人的世界。这样,具有阅读能力的人,无形间获得了超越有限生命的无限可能性。阅读不仅使他认识了草木虫鱼之名,而且可以上溯远古下及未来,饱览存在的与非存在的奇风异俗。

  • 湖北省武汉市2019年中考语文真题试题

    湖北省武汉市2019年中考语文真题试题

    回乡过年,带小外甥去小店买花炮,回来路上听见有人喊他名字,我正要回头,却听小外甥压低声音说,快走。我还没反应过来,他已经一溜烟跑回家了。我转过头,看见一个和他年龄相仿的小男孩愣愣地站在远处,无所适从的样子。 回到家里,小外甥说那是他同学,不过大家都不跟那小男孩玩。小男孩有时撵着跟人家玩,有时候又会莫名其妙地骂人,甚至动手,下手还特别重,有次把一个男生的耳朵都打出血了。 为什么会这样呢?小外甥的爸爸告诉我,小男孩没人管,妈妈几年前就没了,爸爸在外面打工,也不怎么回来,他跟着爷爷奶奶住。

  • 湖北省孝感市2019年中考语文真题试题(含解析)

    湖北省孝感市2019年中考语文真题试题(含解析)

    文人收藏紫砂壶,已不仅仅是为了品茶,更是为了在闲暇之余,在竹影琳琅、绿影映墙之时,拿在手里细细把玩,修身养性、涵养品德。紫砂壶也因之成为文人梦寐以求的茶具,甚至千金难求,罕如美玉。紫砂壶名家供春所制紫砂壶,清朝时期成为极品。雍正年间的状元周澍曾得到一款供春的紫砂壶,绘画著文之余,泡茶独品,清雅非常。此壶价钱,用他的文字描述:“供春小壶一具,用之数年,则值金一笏。”

  • 湖北省孝感市2019年中考语文真题试题

    湖北省孝感市2019年中考语文真题试题

    一个茶人,拿着一把紫砂壶,泡上一壶茶,坐在古柳大树下的青石上,有一口没一口地喝着,简直是山水田园般的生活。这一刻,什么名利,什么得失,都已了无踪迹,心中唯有茶花如雪,清香细细,唯有蝉鸣声声,山泉溅溅。周作人说:“喝茶当于瓦屋纸窗之下,清泉绿茶,用素雅的陶瓷茶具,同二三人共饮,得半日之闲,可抵十年的尘梦。”这不是山中饮茶,是都市茶寮饮茶。山中饮茶,当用紫砂壶,与田园生活,与篱笆豆角的山村风光很是吻合。

  • 湖北省随州市2019年中考语文真题试题(含解析)

    湖北省随州市2019年中考语文真题试题(含解析)

    故乡的风之所以气势恢宏,是其中的沙尘充当了风的武器。那时的风与沙尘,像是从未分开过。风力助推沙尘漫天席卷,掀翻了街口摆着糖果的摊板,刮跑了老爷爷头上的帽子。偶尔看见骑自行车的人,在风里歪扭一阵之后,不得不屈尊下驾,吃力地推车前行。有时在教室里正聚精会神地听讲,风猛然用力,让玻璃飞出窗框,在书桌上和地上“哗”地破碎。我和同伴们对风的防御,最早使用的是风镜。顾名思义,风镜就是防风的眼镜。玻璃镜片镶在细细的钢丝框上,四周有密织的布罩,两端用皮筋连接,套在头上拉至眼部,风便吹不着眼睛了。每副风镜五分钱,后来有了塑料的镜片,价格要高出很多。戴风镜并不完全是为了防风,重点是防风里的沙子。

  • 新人教版高中英语必修3Unit 1 Festivals and Celebrations-Reading and Thinking教学设计

    新人教版高中英语必修3Unit 1 Festivals and Celebrations-Reading and Thinking教学设计

    The topic of this part is “Discover the reasons for festivals and celebrations.The Listening & Speaking & Talking part aims at talking about the experiences and feelings or emotions about the festivals and celebrations. This section aims at detecting the reason why the people celebrate the festivals, the time, the places, the types and the way of celebrations. It also explains why some traditions in the old celebrations are disappearing, like the firecrackers in the big cities and some new things are appearing like the prosperity of business or commerce. 1. Students can talk about what festivals they know and the reasons and the way of celebrating them.2. Students should learn the reading skills such as the headline and get the topic sentences, the structures of articles.3. Students can understand the past, the present situation of some festival around the world and why there are some changes about them. 4. Students can have the international awareness about the festivals.1. Students should learn the reading skills such as the headline and get the topic sentences, the structures of articles.2. Students can understand the past, the present situation of some festival around the world and why there are some changes about them.Step 1 Lead in---Small talkWhat festival do you like best ? Why ?I like the Spring Festivals because I can set off the fireworks, receive the lucky money and enjoy the Gala with my families.Step 2 Before reading---Pair workWhy do people celebrate different festivals ?The Spring Festivals is to celebrate the end of winter and the coming of spring and new life.The Mid-autumn Day is to celebrate the harvest and admire the moon.

  • 新人教版高中英语必修3Unit 2 Morals and Virtues-Listening &Speaking&Talking教学设计

    新人教版高中英语必修3Unit 2 Morals and Virtues-Listening &Speaking&Talking教学设计

    Example:One day, a poor boy who was trying to pay his way through school by sending newspapers door to door found that he only had one dime(一角)left. He was so hungry that he decided to beg for a meal at the next house.However, he lost his nerve when a lovely young woman opened the door. Instead of a meal he asked for a drink of water. She thought he looked hungry so she brought him a large glass of milk. He drank it slowly, and then asked, “How much do I owe you?” “You don’t owe me anything,” she replied, “Mother has taught me never to accept pay for a kindness.” “Then I thank you from the bottom of my heart.” With these words, Howard Kelly left that house.Years later the woman became badly ill and was finally sent to the hospital in a big city. Dr. Howard Kelly, now famous, was called in. When he heard the name of the town she came from, a strange light filled his eyes. Dressed in his doctor’s clothes, Dr. Kelly went into her room and recognized her at once. From that day on, he gave special attention to her, and decided to do his best to save her life.At last the woman was saved. Dr. Kelly asked the business office to pass the final bill to him. He looked at it and then wrote something on the side. The bill was sent to the woman’s room. She was afraid to open it because she was sure that it would take the rest of her life to pay for it off. Finally she looked, and the note on the side of the bill caught her attention. She read these words: “Paid in full with a glass of milk, Dr. Howard Kelly.” Tear of joy flooded her eyes.

  • 新人教版高中英语必修3Unit 2 Morals and Virtues-Reading for Writing教学设计

    新人教版高中英语必修3Unit 2 Morals and Virtues-Reading for Writing教学设计

    1. 这个寓言是一个关于一位国王古寓言。 The fable is an old fable about a king.2.作者用这个故事让读者对于社区的问题负有个人责任的必要印象深刻。The author used the story to impress upon readers with the need to take personal responsibility for problems in the community.3. 这个故事十分成功的实现了它的目的。The story was quite successful in achieving its purpose.Step 7 WritingPlease write a review of the story according the outline above.The fable is an old fable about a king who thought his people are lazy, so he put a large stone in the middle of the road and hides and waited to see if anyone will try to move it.The author used this story to impress upon readers with the need to take personal responsibility for problems in the community. The story was quite successful in achieving its purpose, and I liked it because it had a clear moral.However, while the moral of the story is clear, the actions of the king seemed pointless to me, because none of the characters in the story learnt anything. For this reason, I think there are better stories that can be used to impress upon people with the need for personal responsibility.Step 8 Pair workExchange drafts with a partner. Use this checklist to help your partner revise his/her draft.1. Does the writer give a short description of the story ?2. Does the description include the most important details of the story ?3. Does the writer give his or her opinion about the character or their actions ?4. Is the review well-organised ? 5. Does the writer use the -ing form as the adverbial correctly in the writing ?6. Are there any grammar, spelling, or punctuation errors ?Step 9 HomeworkPut up your revised draft in the classroom or read it to your class.

  • 新人教版高中英语选修2Unit 4 Journey Across a Vast Land教学设计

    新人教版高中英语选修2Unit 4 Journey Across a Vast Land教学设计

    当孩子们由父母陪同时,他们才被允许进入这个运动场。3.过去分词(短语)作状语时的几种特殊情况(1)过去分词(短语)在句中作时间、条件、原因、让步状语时,相当于对应的时间、条件、原因及让步状语从句。Seen from the top of the mountain (=When it is seen from the top of the mountain), the whole town looks more beautiful.从山顶上看,整个城市看起来更美了。Given ten more minutes (=If we are given ten more minutes), we will finish the work perfectly.如果多给十分钟,我们会完美地完成这项工作。Greatly touched by his words (=Because she was greatly touched by his words), she was full of tears.由于被他的话深深地感动,她满眼泪花。Warned of the storm (=Though they were warned of the storm), the farmers were still working on the farm.尽管被警告了风暴的到来,但农民们仍在农场干活。(2)过去分词(短语)在句中作伴随、方式等状语时,可改为句子的并列谓语或改为并列分句。The teacher came into the room, followed by two students (=and was followed by two students).后面跟着两个学生,老师走进了房间。He spent the whole afternoon, accompanied by his mom(=and was accompanied by his mom).他由母亲陪着度过了一整个下午。

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