提供各类精美PPT模板下载
当前位置:首页 > Word文档 >

北师大初中八年级数学下册一元一次不等式与一次函数的关系教案

  • 湖北省十堰市2021年中考语文试题(原卷版)

    湖北省十堰市2021年中考语文试题(原卷版)

    不久前,国外某汽车品牌车内摄像头拍摄的一组高清画面引发热议。网友表示,私家车内部属于私密空间,如果在毫不知情的情况下,在车内的一举一动都被摄像头记录下来,甚至上传云端,会让人没有安全感。尽管相关品牌已经作出回应,但尚不足以完全消除人们的疑虑。

  • 湖北省荆门市2021年中考语文试题(解析版)

    湖北省荆门市2021年中考语文试题(解析版)

    感旧陆游当年书剑①揖三公②,谈舌如云气吐虹。十丈战尘孤壮志,一簪华发醉秋风。梦回松漠榆关外,身老桑村麦野中。奇士③久埋巴硖骨,灯前慷慨与谁同?

  • 湖北省随州市2019年中考语文真题试题

    湖北省随州市2019年中考语文真题试题

    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。

  • 湖北省荆门市2019年中考语文真题试题(含解析)

    湖北省荆门市2019年中考语文真题试题(含解析)

    沧州南一寺临河干,山门圮于河,二石兽并沉焉。阅十余岁,僧募金重修,求二石兽于水中,竟不可得。以为顺流下矣,棹数小舟,曳铁钯,寻十余里,无迹。一讲学家设帐寺中,闻之笑曰:“尔辈不能究物理,是非木杮,岂能为暴涨携之去?乃石性坚重,沙性松浮,湮于沙上,渐沉渐深耳。沿河求之,不亦颠乎?”众服为确论。一老河兵闻之,又笑曰:“凡河中失石,当求之于上流。盖石性坚重,沙性松浮,水不能冲石,其反激之力,必于石下迎水处啮沙为坎穴,渐激渐深,至石之半,石必倒掷坎穴中。如是再啮,石又再转。转转不已,遂反溯流逆上矣。求之下流,固颠;求之地中,不更颠乎?”如其言,果得于数里外。然则天下之事,但知其一,不知其二者多矣,可据理臆断欤?

  • 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。

  • 2022年湖北省荆州市中考英语真题(解析版)

    2022年湖北省荆州市中考英语真题(解析版)

    One night many yearsago, an angry voice woke me up from sleep. It was my drunken (喝醉的) father. Those days, he would always ___11___ home very late. Sometimes, he would also go on to fight with my mom.

  • 2022年湖北省鄂州市中考英语真题(解析版)

    2022年湖北省鄂州市中考英语真题(解析版)

    Dealing with a nosebleed(鼻出血)mightseem simple. But recently, the British RED Cross asked parents with youngchildren how to help a child with a nosebleed. About 65 percent of parents didnot ____11____the correct action to help.

  • 2022年湖北省武汉市中考英语真题(解析版)

    2022年湖北省武汉市中考英语真题(解析版)

    The December day started like any other. Papacame back with his boat full of fish. Mama made breakfast for the family.Seven-year-old Joonas was doing his homework, while his two little brothers ranaround the yard. That day seemed peaceful, but Alejo ____16____ better.

  • 2022年湖北省恩施州中考英语真题(解析版)

    2022年湖北省恩施州中考英语真题(解析版)

    Once, herfather took her to the kitchen. He asked Jane to take a potato, an egg ____11____ two spoons of tea leaves. Jane was ____12____, andasked her father, “Do you want me to cook?”

  • 2022年湖北省宜昌市中考英语试题(解析版)

    2022年湖北省宜昌市中考英语试题(解析版)

    Duringwork hours in Becker’s bread shop, the kitchen is especially quiet except thesound of the machine. The quiet environment is not the result of the strictrules, but because all the workers are deaf. They use sign language tocommunicate with each other from time to time.

  • 2022年湖北省十堰市中考英语真题(解析版)

    2022年湖北省十堰市中考英语真题(解析版)

    My arms were shaking and my heart was beating ____19____ when I stood at thestarting line. ____20____the endless runway (跑道), I felt like a boat fighting against the windand rain. I ____21____myself that simply joining in was a victory (胜利) itself.

  • 2022年湖北省十堰市中考英语真题(原卷版)

    2022年湖北省十堰市中考英语真题(原卷版)

    My arms were shaking and my heart was beating ____19____when I stood at the starting line. ____20____ the endless runway (跑道), I felt like a boatfighting against the wind and rain.

  • 2022年湖北省武汉市中考英语真题(原卷版)

    2022年湖北省武汉市中考英语真题(原卷版)

    The December day started like any other. Papacame back with his boat full of fish. Mama made breakfast for the family.Seven-year-old Joonas was doing his homework, while his two little brothers ranaround the yard.

  • 2022年广西北部湾经济区中考英语真题(解析版)

    2022年广西北部湾经济区中考英语真题(解析版)

    Ibelieved that I was right and he was wrong, and Tony believed that I was wrongand he was right. Our teacher, a kind and smart lady, decided to teach us alesson. She brought us to the front of the class and placed him on one side ofher desk and me on the other. In the middle of her desk was a large and roundobject. I could clearly see that it was black. The teacher asked us what colorthe object was. “White,” Tony answered. I couldn’t believe he said the objectwas white! “Clearly, it was black!” Another argument started between Tony andme, this time about the color of the object.

  • 2022年广西北部湾经济区中考英语真题(原卷版)

    2022年广西北部湾经济区中考英语真题(原卷版)

    Ibelieved that I was right and he was wrong, and Tony believed that I was wrongand he was right. Our teacher, a kind and smart lady, decided to teach us alesson. She brought us to the front of the class and placed him on one side ofher desk and me on the other. In the middle of her desk was a large and roundobject. I could clearly see that it was black. The teacher asked us what colorthe object was. “White,” Tony answered. I couldn’t believe he said the object waswhite! “Clearly, it was black!” Another argument started between Tony and me,this time about the color of the object.

  • 2022年广西北部湾经济区中考英语真题(原卷版)

    2022年广西北部湾经济区中考英语真题(原卷版)

    By usingthis method, the study found that red meats were the most unfriendly foods tothe environment. Keeping farm animals produces a large number of methane(甲烷)that keeps 30 times more heat than CO2. As well asmaking the earth warmer, eating too much red meat is known to increase the riskof a few illnesses, such as heart trouble.

  • 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。

上一页123...452453454455456457458459460461462463下一页
提供各类高质量Word文档下载,PPT模板下载,PPT背景图片下载,免费ppt模板下载,ppt特效动画,PPT模板免费下载,专注素材下载!

PPT全称是PowerPoint,LFPPT为你提供免费PPT模板下载资源。让你10秒轻松搞定幻灯片制作,打造⾼颜值的丰富演示文稿素材模版合集。