为您找到与初三化学第三单元课件相关的共200个结果:
水资源是我们人类赖以生存的重要宝藏。下面是百文网小编整理的一篇初三化学第二单元知识点总结,希望对您有所帮助。
1、定义:原子是化学变化中的最小粒子
2、化学变化的实质:分子的分化和原子的重新组合。
3、分子与原子的比较:
原子 分子 备注
概念 化学变化中的最小粒子 保持物质化学性质的最小粒子。 原子一定比分子小吗?
相似性 小,轻,有间隔。
同种原子性质相同;
不同种原子性质不同; 小,轻,有间隔。同种分子性质相同;
不同种分子性质不同;
相异性 在化学反应中不能再分。 在化学反应中,分裂成原子,由原子重新组合成新的分子。
相互关系 原子可以构成分子,由分子构成物质。如:氧气,氮气等原子也可以直接构成物质。如:金属 分子是由原子构成的。
无数多个同种分子构成物质。 构成物质的粒子有几种?
自己动手整理的系统化知识笔记是自己的脑力思维结晶,深扎在大脑深处,与大脑神经元记忆系统钩链成网,潜意识对其有感性的“亲切”熟知感。等下面是百文网小编为大家整理的初三化学第三单元知识点,欢迎翻阅。
1、基本性质:
⑴质量、体积都很小;
⑵在不停地运动且与温度有关。温度越高,运动速率越快 例:水的挥发、品红的扩散; ⑶分子间有间隔。同一物质气态时分子间隔最大,固体时分子间隔最小。例如:物体的热胀冷缩现象就是分子间的间隔受热时增大,遇冷时变小的缘故。
⑷同种物质间分子的性质相同,不同物质间分子的性质不同。
2、分子的构成:分子由原子构成。
3、含义:分子是保持物质化学性质的最小微粒。
4、从分子和原子角度来区别下列几组概念
⑴物理变化与化学变化:由分子构成的物质,发生物理变化时,分子种类不变;发生化学变化时,分子种类发生了改变。
⑵纯净物与混合物:由分子构成的物质,纯净物由同种分子构成;混合物由不同种分子构成。 ⑶单质与化合物:单质的分子由同种原子构成;化合物的分子由不同种原子构成。
2023八年级上册英语第三单元测试题及答案
关于八年级上册英语第三单元测试卷怎么做呢?测试可以帮助参考者清楚地认识自己的知识掌握程度。以下是小编准备的一些八年级上册英语第三单元测试题及答案,仅供参考。
本学期我继续担任八(1)、(2)两个班的英语教学任务,在教学中,严格规范课前准备工作,立足提高课堂教学效率,重视课后反思,做好培优辅差工作。
一、指导思想
以新课标为指导,培养学生的听、说、读、写的能力,使学生获得英语的基础知识和运用语言的能力,形成良好的学习习惯。
二、教学目标
通过训练学生的听、说、读、写,使学生掌握基本的.语言知识和语言技能,从而培养学生初步运用英语进行交际用语的能力,为将来的学习打下坚实的基础。
三、学情分析
大多数学生还是有较好的英语学习动机和学习目标,能听懂口语交际用语的句型,能克服生词障碍,理解短文大意,但有少部分学生因基础不好,学习吃力,有时还会扰乱课堂纪律,给教学带来麻烦。
四、教材分析
八年级英语下册共有十个单元,各单元话题灵活,贴近生活实际,并采用任务型教学模式,每个单元围绕一个话题开展听、说、读、写活动,将要学习的语法知识有:过去进行时,现在完成时,过去完成时,实际状语从句,动词不定式等,同时每个单元都有提供2篇阅读文章,训练学生的阅读能力,扩大学生的阅读量。
五、具体实施
1、认真钻研教材,备好、上好每一节课。
2、课堂上尽量用多媒体教学,给学生创造良好的教学环境。
3、多与学生沟通,了解学生学习状况和需求,改进教学中的问题。
4、注重培优辅差工作,面向全体学生。
六、教学进度安排
七年级上册语文第三单元测试卷及答案人教版
有没有一份良好的语文试题可以比较准确的检验出你的语文学习成绩呢?不妨来做一份七年级语文单元测试卷吧。以下是小编准备的一些七年级上册语文第三单元测试卷及答案,仅供参考。
一、3.①去掉“人民”。 ②在“成为北方一大强国”前加上“使晋国”。 5. C
二、(一)6.描写了大海吞吐日月,包蕴万千的壮丽景象。(或是“大海波澜壮阔、气势宏伟的景象”)
7.碣石 欣赏大海景色 观
8.大海; 博大的胸怀和豪迈的气概(或是“统一中国,建功立业的愿望”)。
9.示例:人生自古谁无死,留取丹心照汗青;生当做人杰,死亦为鬼雄。
(二)10. (1)离开(背弃);(2)厌恶(嫌弃);( 3)穿衣; 戴帽 (4) 通“诟”,诟骂,辱骂
11.俸禄已厚,却不满足,祸患就可能加到他身上。
12.(1)位高意下;(2)官大心小;(3)禄厚不取。
13.谦恭有礼,虚心听取他人意见
三、(一)15. 妙 从四个方面加以描述:小雪使矮松越发青黑,给蓝天镶上银边,给山穿上花衣,薄雪还会露出点粉色
16.均可以,按空间顺序层次分明地描写了山尖山坡山腰的景物,或按由白天到傍晚的的时间顺序来写,其标志是“等到快日落的时候”
17.积雪 草
18.①写村庄、雪的情态,活灵活现,表达出一种安适、平静的气氛;
②使水有了灵气,突出绿的珍贵、美丽、可爱。
19.把整个冬天的济南比作蓝水晶,恰到好处地写出来天地空间的清亮、明净。
20这句话抒发了作者对济南冬天的赞美之情。作用:是全文的结束语,又点了题,给人以回味的余地。
(二)21.比喻,形象生动地表现出了雨声的特点以及带给人的美妙感受。
22.他希望通过画画来再现逝去的自然、祥和的生活环境和淳朴和谐的人际关系,借以抒发强烈的怀念之情,排遣孤寂之情。
23.示例1:以前的雨声充满音乐美和“绚丽颜色”,现在的雨声呈现呆板的灰色,节奏沉闷压抑。对比手法的运用鲜明地表现了前后变化,强烈地表达出主人公对淳朴自然生活的热爱和怀念。
示例2:以前人与人和谐地交往和交流,现在人人封闭,缺乏沟通和交流。对比手法的运用鲜明地表现了前后变化,强烈地表达出主人公对和谐人际关系的热爱和怀念。
(三)24、与后文形成对比,突出了教室里春意盎然。
25、萌动蔓延
26、草芽针一样细,顶端嫩绿,往下是鹅黄,根部则嫩白。
刚刚泛青或萌发芽苞的小树枝,还有三五朵小野花。
打碗花、紫地丁、映山红百娇千艳,绚丽多姿。
27、热爱春天热爱大自然的感情;和谐美好的关系。
28、为老师跟自己一起领略春光而会意的笑
七年级上册英语第三单元测试卷及答案最新
七年级英语第三单元考试即将到来,那么关于七年级英语第三单元测试卷我们该怎么做呢?以下是小编准备的一些七年级上册英语第三单元测试卷及答案,仅供参考。
II.词组
1 Thanks for...+n./doing sth 为…而感谢
2 pen friend 笔友
3 aren't=are not 不是(复数形式)
4 Thanks for your help 为了感谢你的帮助
5 in the picture 在图中
6 look at 朝…看
7 talk about 谈论关于
8 family photo 家庭照片
9 family tree 家谱
10 what about=how about 关于…怎么样
11 draw a picture 画画
12 a photo(picture) of …的一张照片
13 on the back of the photo 在照片背后
14 take photos (a photo) 拍照
2023七年级上册英语第三单元测试题及答案
七年级英语第三单元考试就要到了,为让七年级同学们对单元考试有更好的准备,不妨来做一份七年级英语试卷吧,以下是小编准备的一些七年级上册英语第三单元测试题及答案,仅供参考。
I. 1. sister 2. photo/picture 3. love 4. friend 5. uncle 6. aunt 7. They 8. much 9. She 10. daughter 11. my 12. are 13. friends 14. cousins 15. is
II. 1-5 AACBC 6-10 ACABB
III. 1. B, these→this 2. C, one 3. D, uncle→aunt 4. C, he→she 5. B, is→are
IV. 1423
V. 1-5 BACDA 6-10 DCBAC
VI. 1. photo/picture, of, Tom’s 2. a, teacher 3. daughter 4. brother 5. 一排:sister Fritz, Evelyn; 二排Anna, Earl; 三排Christie, Carina, John,顺序可交换。
VII. One possible version:I am a girl. I’m twelve. My name is Gina. My grandparents are John and Lucy. Tom and Mike are my brothers. My friend is Norma. He is my good friend at school.
九年级上册英语第三单元测试卷及答案可打印
单元试卷是常见的检测手段,学完九年级英语上册Unit3知识后,我们该怎么做好九年级英语第三单元测试卷呢?以下是小编准备的一些九年级上册英语第三单元测试卷及答案,仅供参考。
1-5 BCABD 6-10 ACBDC 11-15 BDCAC
16-20 CDBAA 21-25 BCDBA 26-30 CDABC
31-35 CACBD 36-40 DBDAC 41-45 ABADC
46. family rules
47. clean them up quickly
48. pet animals
49. isn’t allowed to / can’t / mustn’t
50. only on weekends
51. useful 52. are 53. quiet 54. to wear 55. supposed
56. either 57. care 58. them 59. move 60. to obey
One possible version:
Dear Sir,
My family is planning a holiday to your city. I got some information about your hotel, but I still have some questions to ask. Would you be kind enough to reply to my e-mail?
We are arriving in your city on October 1st. And we plan to stay in your hotel for 5 days. Would you tell me how far your hotel is from the airport? And we’d like to know how we can get to your hotel. Also, we wonder whether you offer free breakfast. Last but not least, would you mind telling us whether there is a discount for a long stay?
Thanks for your time. I’m looking forward to your reply.
Lucy
2023四年级上册数学第三单元测试卷及答案免费
小学生想要学好数学,做题是最好的办法,那么四年级上册数学第三单元测试卷怎么做呢?以下是小编准备的一些四年级上册数学第三单元测试卷及答案,仅供参考。
五年级上册语文第三单元测试卷及答案人教版
关于五年级上册语文第三单元测试卷怎么做呢?在语文考试前,去认真的去做一系列的试题卷也是一种高效率的学习方法。以下是小编准备的一些五年级上册语文第三单元测试卷及答案,仅供参考。
一、1.B
2.(1)妻子叮嘱郎君
(2)婚后悔誓言谎言
3.周密周到
4.C
5.C
6.小白蛇海力布敬爱的猎人是小白蛇的救命恩人,小白蛇要报答他
7.牛郎织女织女牛郎牛郎遭遇悲惨,十分可怜牛郎勇敢离开家追求新生活和用辛勤劳动创造美好生活的品质打动了织女
二、1.B
2.家家乞巧望秋月穿尽红丝几万条
三、示例:我最喜欢的人物是织女。她本是天上的仙女,是王母娘娘的外孙女。她在天上成天成夜地织彩锦,没有自由和快乐。她善良勇敢,义无反顾地与牛郎结合,留在人间。遭到王母娘娘的干预后,她极力抗争,最终能与心爱的人在每年农历七月初七相会。
四、1.A
2.筋骨骨头筋尾巴
3.蛮横霸道、不讲道理。心地善良、重情重义。
4.示例:我非常想念小白马。这天晚上,我梦到了小白马,它告诉我可以用它的筋骨做成一把琴,这样我们就能够永远在一起了。按照小白马所说的话,我用它的骨头、筋和尾巴做成了一把马头琴。
部编版小学六年级上册第三单元作文(精选10篇)
在日常的生活或工作的学习中,作文成了我们都非常熟悉的东西。作文,作为一种语言活动,集成了高度的综合性和创造性。对于许多人来说,作文或许是一个难以驾驭的挑战。下面小编将为大家整理了关于部编版小学六年级上册第三单元作文的内容,希望能为大家提供一些参考。
看到《关爱老人》这篇习作的题目,我的眼泪忍不住掉下来了。
说到老人,就会想起偏瘫的外公,去世的外婆。虽然那时我还很小,但是他们对我的疼爱我永远也不会忘记。听妈妈说,那是六年前的事情,当时我的外公一个人骑着摩托车去办事。在路上,外公突然从车上摔下来,倒在路上。那时,马路上没有闲人,只有一个小卖部的老板在。那老板马上跑过来,一边扶起外公靠墙坐着,一边打120急救车。然后在我外公的身上找到电话,联络到我们家人,及时送到医院。虽然抢救过来了,却落下了偏瘫,不能行动,只能靠轮椅渡过余生。因为这件事,妈妈一直责怪自己没有照顾好父母:如果能及时发现外公有高血压,那么就不会让他骑摩托车,也就不会发生这件令人遗憾的事情。
那时我听妈妈讲得最多的一句话是:家家有老人,人人都会老。说真的,我之前是一直不明白是什么意思。但是,现在我知道了,而且有时候想起这句话会有一种心痛的感觉;也想起了慈祥的外婆去世是因为一个人在家而突发心脏病。
世界上是没有后悔药的!现在每个星期去看外公,陪他聊天,成为了我必做的事情。我希望我的快乐能带给外公快乐,让他不会孤单。
关爱老人是我们每一个人都应尽的责任。不但要关爱自己家里的老人,对社会上的老人,在他们需要帮助的时候,也应该伸出一双手。因为这样,不仅可以温暖了一个老人,或许也会挽救一个老人的生命,给一个家庭带来了幸福的生活;让社会多一些笑声,多一些温暖。
人教版六年级下册语文第三单元知识点整理归纳
把口头语言和书面语言连在一起说,就叫语文,那么关于六年级下册语文第三单元知识点怎么学习呢?以下是小编准备的一些人教版六年级下册语文第三单元知识点,仅供参考。
一、字词盘点
1.字
(1)难读的字挪(nuó)徊(huái)蚁(yǐ)绽(zhàn)(2)难写的字藏:容易少写下面“臧”字左边的三笔。蒸:容易少写最下面的“灬”。揉:左窄右宽,右上是“矛”,不是“予”。偎:左窄右宽,“畏”字左下不要多写“丿”。(3)多音字旋薄挨吭
2.词
(1)必须掌握的词
空虚叹息徘徊蚁穴翻箱倒柜念叨停顿晃动碰倒原谅惆怅休止时光惊惶亲吻依偎挽回消逝
(2)近义词
聪明~聪慧确乎~的确旋转~转动觉察~察觉遮挽~挽留叹息~叹气徘徊~踌躇蒸融~融化盼望~渴望昏暗~阴暗答应~同意明媚~明朗简单~简易吓唬~惊吓焦急~着急兴奋~高兴原谅~饶恕耽搁~耽误缥缈~虚无急遽~急剧孤独~孤单惆怅~忧郁
(3)反义词
去?来谢?开聪明?愚蠢空虚?充实枯?青散?聚旋转?静止徘徊?果断盼望?渴望昏暗?明亮答应?拒绝明媚?昏暗简单?复杂焦急?冷静兴奋?平静原谅?埋怨缥缈?真实急遽?缓慢孤单?热闹惆怅?兴奋
(4)词语归类
①ABB式词语:头涔涔泪潸潸赤裸裸类似的词语:笑哈哈笑眯眯笑嘻嘻笑盈盈绿油油黑洞洞蓝湛湛红彤彤白花花②AABB式词语:念念叨叨空空落落类似的词语:高高兴兴快快乐乐安安全全整整齐齐安安静静干干净净舒舒服服③ABAB式词语:咔嚓咔嚓类似的词语:研究研究练习练习活动活动锻炼锻炼思考思考表扬表扬分析分析④ABCB式词语:一动不动类似的词语:应有尽有出尔反尔将心比心倚老卖老人云亦云毅然决然心服口服⑤含有数字的成语:千门万户一动不动类似的词语:一心一意三心二意六神无主九死一生九牛一毛五光十色五湖四海⑥由两个动宾结构组成的词语:翻箱倒柜类似的词语:翻山越岭跋山涉水含辛茹苦忍辱负重开天辟地咬文嚼字装腔作势⑦量词一滴水滴一块方砖一个蚁穴一本电影画报一派荒凉⑧动词拨弄蚁穴翻看画报闭上眼睛⑨修饰词悄悄地挪移逃去如飞的日子游丝样的痕迹绽开的泡沫无可挽回地消逝漫长而急遽的变化孤独而惆怅的黄昏又大又重的洗衣盆
二、佳句积累
1.比喻句
在默默里算着,八千多日子已经从我手中溜去,像针尖上一滴水滴在大海里,我的日子滴在时间的流里,没有声音,也没有影子。这句话运用比喻的修辞手法,把八千多日子比作针尖上的一滴水滴,生动形象地说明日子是多么的渺小,消逝得是那么迅速,无声无息,无影无踪,表现出作者十分无奈的愁绪。
2.拟人句
我觉察他去得匆匆了,伸出手遮挽时,他又从遮挽的手边过去;天黑时,我躺在床上,他便伶伶俐俐地从我身上跨过,从我脚边飞走了;等我睁开眼和太阳再见,这算又溜走了一日。这句话运用拟人的修辞手法,把日子人格化,生动形象地写出了日子在伸手遮挽时、躺在床上时、睁开眼睛时,“从遮挽的手边过去”“从我身上跨过,从我脚边飞走”“又溜走了一日”,“我”眼睁睁看着时间“去得匆匆”,却无法挽留,心中充满无限的惋惜与无奈。 3.排比句
燕子去了,有再来的时候;杨柳枯了,有再青的时候;桃花谢了,有再开的时候。这句话运用排比的修辞手法,描绘了自然界中我们司空见惯的一些景象,表明大自然景物的交替更迭是时间飞逝的痕迹。
4.反问句
我赤裸裸来到这世界,转眼间也将赤裸裸地回去吧?这句话运用反问的修辞手法,反省自己过去的日子,警醒自己不能虚度年华,要做出一些有意义的事,才不会枉活一世。
5.精彩句
我还没有她的腿高,那两条不停顿的腿至今都在我眼前晃动,它们不停下来,它们好几次绊在我身上,我好几次差点儿绞在它们中间把它们碰倒。这句话借描写事物来表现人物的心情,通过描写母亲的腿,既写出了母亲家务的繁忙,任务的繁重,劳动的艰辛,也写出了“我”不停地跟在母亲身后追问,好几次差点儿被她踩到或把她绊倒,表现了“我”内心的焦急之情。
考试点睛
仿写句子是考试中的一个常考考点,常见的考查形式有:①照样子,把句子补充完整。②照样子,写一句话。
三、考试热点
1.《匆匆》一课,要求全文背诵,考试时常以默写填空的形式考查。2.《那个星期天》一课,心理活动描写很精彩,考试时常以句子仿写的形式考查。3.两则《习作例文》和第五单元习作,考试时常以通过具体事例的描写来表达内心的真实感受的形式考查习作水平。
四、“1+X”阅读
推荐篇目:朱自清《春》推荐理由:在这篇“贮满诗意”的“春的赞歌”中,事实上饱含了作家特定时期的思想情绪、对人生乃至人格的追求,表现了作家骨子里的传统文化积淀和他对自由境界的向往。《春》这篇文章讴歌了一个蓬蓬勃勃的春天,但它更是朱自清心灵世界的一种逼真写照。阅读方法:这篇文章可以和《匆匆》一文进行对比阅读,在阅读中体会朱自清的散文在整体构思、写作手法、语言艺术等方面的特点。
小学六年级下册英语第三单元单词及知识点
英语是按照分布面积而言最流行的语言,但母语者数量是世界第三,仅次于汉语、西班牙语。以下是小编准备的一些六年级下册英语第三单元单词及知识点,仅供参考。
一、词汇
went (go的过去式)去
camp 野营
went camping (尤指在假日)野营
fish 钓鱼;捕鱼
went fishing 去钓鱼
rode (ride的过去式)骑(马;自行车)
hurt (hurt的过去式)(使)受伤
ate (eat的过去式)吃
took (take的过去式)拍照
took pictures 照相
bought (buy的过去式)买
gift 礼物
fell (fall的过去式)摔倒
off 从(某处)落下
Labour Day 劳动节
mule 骡子
Turpan 吐鲁番
could (can的过去式)能
till 直到
beach 海滩;沙滩
basket 篮;筐
part 角色
licked (lick的过去式)舔
laughed (laugh的过去式)笑
二、句子
1. -- What happened? 怎么了?
-- I fell off my bike and hurt my foot.
我从自行车上摔下来了,弄伤了我的脚。
2. -- Are you all right? 你还好吧?
-- Yes, I’m OK. Thanks. 是的,我没事了。谢谢。
3. Oh dear! 哦,天啊!
4. -- Did you go to Turpan? 你去吐鲁番了吗?
-- Yes, I did. 是的,我去了。
5. -- Who did you go with? 你和谁一起去的?
-- My parents and my uncle. 我父母和我叔叔。
6. That’s too bad! 那太糟糕了!
7. Come and look at my photos from the Labour Day holiday.
来看我劳动节假期的照片吧。
8. -- Where did you go? 你去哪了?
-- Mt. Tianshan, Xinjiang. I rode a horse. 新疆的天山。我骑马了。
9. -- Where did you go over the winter holiday?
在寒假期间你去了哪里?
-- My family and I went to Sanya. 我和我的家人去了三亚。
10. -- How did you go there? 你们怎么去那儿的?
-- We went there by plane. 我们坐飞机去那儿的。
11. -- What did you do there? 你在那里做什么了?
-- I took lots of pictures, and I alsowent swimming.
我拍了许多照片,我还去游泳了。
三、句型结构
1. -- Are you all right?
-- I’m OK now.
Not very well.
e.g: -- Are you all right? 你还好吧?
-- Not very well. 不是很好。
2. -- Where did you go(+过去时间)?
--(I/ We went to+)地点.
e.g: -- Where did you go last weekend? 你上周末去哪里了?
-- I went to visit my grandma. 我去看望我奶奶了。
3. It looks like + 其他.
e.g. : It looks like a bird. 它看起来像一只鸟。
4. -- Did + 主语 + 动词原形(+其他).
-- Yes,主语 + did.
No,主语 + didn’t.
e.g. : -- Did she drink the milk this morning? 她今天早上喝牛奶了吗?
-- Yes, she did. 是的,她喝了。
5. Was/ Were + 主语 + 形容词?
e.g. : Was Timmy tired yesterday? 昨天吉米累吗?
语法就是语言的规律。任何一种语言都有其内在逻辑性和规律,那么关于三年级上册英语怎么学习呢?以下是小编准备的一些三年级上册英语第三单元知识点总结,仅供参考。
head (头) face(脸) nose (鼻子) mouth (嘴) eye (眼睛)ear (耳朵)arm (胳膊)finger (手指)leg (腿)foot (脚)body (身体)
知识点是知识中的最小单位,最具体的内容,有时候也叫“考点”。那么五年级上册数学第三单元知识点怎么学习呢?以下是小编准备的一些五年级上册数学第三单元知识点,仅供参考。
1、用字母表运算定律。
加法交换律: a+b=b+a 加法结合律: a+b+c=a+(b+c)
乘法交换律: a×b=b×a 乘法结合律:a×b×c=a×(b×c)
乘法分配律: (a±b)×c=a×c±b×c
2、用字母表示计算公式。
长方形的周长公式: c=(a+b)×2 长方形的面积公式: s=ab
正方形的周长公式: c=4a 正方形的面积公式: s=a2
3、x2读作:x的'平方,表示:两个x相乘。
2x表示:两个x相加,或者是2乘x。
4、①含有未知数的等式称为方程。
②使方程左右两边相等的未知数的值叫做方程的解。
③求方程的解的过程叫做解方程。
5、把下面的数量关系补充完整。
路程=(速度)×(时间) 速度=(路程)÷(时间) 时间=(路程)÷(速度)
总价=(单价)×(数量) 单价=(总价)÷(数量) 数量=(总价)÷(单价)
总产量=(单产量)×(数量) 单产量=(总产量)÷(数量) 数量=(总产量)÷(单价 )
工作总量=(工作效率)×(工作时间) 工作效率=(工作总量)÷(工作时间)
工作时间=(工作总量)÷(工作效率)
大数-小数=相差数大数-相差数=小数 小数+相差数=大数
一倍量×倍数=几倍量 几倍量÷倍数=一倍量 几倍量÷一倍量=倍数
被减数=减数+差 减数=被减数-差 加数=和-另一个加数
被除数=除数×商 除数=被除数÷商 因数=积÷另一个因数
知识点可以理解为重要的内容。掌握知识点是我们提高成绩的关键!那么三年级上学期数学第三单元知识点有哪些呢?以下是小编准备的一些三年级上学期数学第三单元知识点,仅供参考。
一、在括号里填上合适的单位。
1.一只蚂蚁身长约5()。
2.一根黄瓜长约2()。
3.一辆货车的载质量是5()。
4.地球绕太阳每秒运行30()。
5.小学生一步长约4()。
二、在○里填上“>”“<”或“=”。
5吨○5200千克 60千米○9千米
3200分米○2300米 2300克○3千克
60毫米○6厘米 5分米○5米
三、辨一辨。(正确的画“√”,错误的画“?”)
1.一根跳绳长5分米。 ()
2.3吨石头比3吨棉花重。 ()
3.4吨比4100千克少100千克。 ()
4.北京到广州的铁路线长2313米。 ()
5.量比较短的物体或者要求结果较精确时,可以用毫米作单位。 ()
四、在括号里填上合适的数。
2分米=()厘米1米=()分米
2厘米=()毫米 6000米=()千米
3千米=()米 80毫米=()厘米
五、解决问题。
1.一辆农用三轮车的载质量是3吨,要一次运走1100千克的苹果和2000千克的梨,在不超载的情况下,可以吗?
2.把下图中两地相距1千米的路线画出来。
3.张奶奶编中国结,每个中国结需要4分米彩绳。
(1)张奶奶有32分米的彩绳,能编几个中国结?
(2)小丽要编6个中国结,需要多少分米彩绳?
4.昆仑超市要进货,用载质量是2吨的卡车运送。如果派两辆这样的.车,怎样装才能一次运完,而且不超载?
5.一根4米长的木头,现在要把它锯成5分米的木桩,可以锯成多少段?需要锯几次?
数学要想学得好,知识点必须背得溜!那么关于二年级上册数学第三单元知识点有哪些呢?以下是小编准备的一些二年级上册数学第三单元知识点,仅供参考。
一、看谁都能算对(9分)
6+60= 20+9= 90-8= 40-7= 75-5= 89-30= 93-60= 20+80= 82-37=
二、用竖式计算(21分)
61+39= 8+29= 82-28= 40-13=
27+10+32= 40-13-19= 28+(45-19)=
三、在○里填上“>”“<”或“=”。(8分)
73-28 ○ 50 82 ○ 65+17 65-8 ○ 63 28+72 ○ 99
1米 ○ 100厘米 70厘米 ○ 1米 2米 ○ 20厘米 7米 ○ 500厘米
四、填空。(14分)
1、要知道物体的长度,可以用( )来量。
2、量一个物体长度,一般把尺的( )刻度对准物体左端。
3、小明身高120( ), 黑板长4( )。
4、一个角有( )个顶点,( )条边。
5、一块三角板中,有( )个角,其中有( )个直角。
6、写出下面角的各部分名称。
五、计算(4分)
23厘米+7厘米=( )厘米 5米+67米=( )米
80厘米-7厘米=( )厘米 1米-20厘米=( )厘米
六、画一画。(10分)
1、画一个直角。 2、画一个比直角小的角。
七、解决问题。(30分)
1、黑猫有75只,白猫有18只,白猫比黑猫少多少只?(3分)
2、一本故事书有70页,小明还有28页没有看,小明已经看了多少页?(3分)
3、植树节栽树,已经栽了38棵,还有24棵没有栽,一共要栽多少棵树?(3分)
4、红花有28朵,黄花有72朵,黄花比红花多多少朵?(3分)
5、 花猫有36只 白猫有29只 小狗比花猫少8只 兔子有18只
(1)花猫和白猫一共有多少只? (3分)
(2) 小狗有多少只?(3分)
(3)白猫比兔子多多少只?(3分)
(4)花猫和白猫的只数比兔子多多少只?(3分)
(5)请你提出一个数学问题并解答。(6分)
要把学九年级上册英语知识当作一个体力活,要尽可能多地去接触英语材料,那么九年级上册英语第三单元知识点有哪些呢?以下是小编准备的一些九年级上册英语第三单元知识点,仅供参考。
一. 单项选择(每小题1分,共15分)
从A、B、C、D四个选项中选择可以填入空白处的最佳答案。
( )1. There’s ______ mall near my house. ______ mall sells the best clothes.
A. a; A B. the; The
C. the; A D. a; The
( )2. Go straight until you see a museum ______ your left.
A. with B. at
C. on D. from
( )3. The building has ______ floors and our classroom is on the ______ floor.
A. four; four B. fourth; fourth
C. fourth; four D. four; fourth
( )4. You can ask the policeman for help ______ you don’t know the way.
A. though B. if
C. unless D. until
( )5. Jack’s mother taught me how ______ Yunnan rice noodles last weekend.
A. to make B. making
C. make D. to making
( )6. It’s ______ for my son to go to school from here. It only takes five minutes on foot.3原创作品
A. interesting B. dangerous
C. convenient D. difficult
( )7. I asked Julie to go to the movies with me, but she refused me ______.
A. normally B. cheaply
C. politely D. easily
( )8. I think you must be excited ______ your grandfather and uncle.
A. seeing B. see
C. to seeing D. to see
( )9. Linda thinks ______ conversations with friends in English is really helpful.
A. having B. has
C. to having D. have
( )10. He ______ two books. Which should we buy?
A. lost B. suggested
C. returned D. borrowed
( )11. —______ do you wish to speak to at the party?
—Mrs. Green.
A. When B. What
C. Why D. Whom
( )12. Peter wonders if there’s a good place ______ in the city.
A. to have fun B. having fun
C. have fun D. to having fun
( )13. I want to go to Mrs. Li’s home. Could you tell me her ______?
A. address B. name
C. story D. hobby
( )14. —Excuse me, do you know ______?
—Yes, there is a flower shop on Jiefang Road.
A. how can I buy some flowers
B. where I can buy some flowers
C. how I can buy some flowers
D. where can I buy some flowers
( )15. —Sorry to trouble you, but could you please help me carry this heavy box?
—______. Where do you want to put it?
A. Sorry, I can’t B. I hope not
C. Of course D. Good idea
二. 完形填空(每小题1分,共10分)
先通读下面短文,掌握其大意,然后从A、B、C、D四个选项中选择可以填入空白处的最佳答案。
Mr. White is a blind man who likes traveling alone. However, as a blind man, he has met a lot of 1 during his trips.02
Once Mr. White traveled to Texas. It was his first time to go there. On the plane, he sat next to a woman who 2 Texas. The woman told him that everything was 3 and better in her city. When Mr. White arrived, he found a 4 and decided to spend the night there. 【1:3】
After dinner, Mr. White went to a wine bar (酒吧) and ordered a glass of wine. When the waiter (服务员) brought him one, he was 5 . “Wow! How big!” he said. Mr. White doesn’t drink often, 6 he was a little drunk (喝醉) after drinking the wine. He wanted to go to the restroom, so he asked another waiter for 7 . “Turn right at the information desk and it is the second door on the right,” said the waiter.
When Mr. White walked past the first door, he fell down. He missed (错过) the 8 and went towards the third door instead. He walked forward and then 9 into the swimming pool. At that time he 10 that everything there was bigger. “Don’t flush (冲洗)! Don’t flush!” he shouted as soon as he got his head above water.
( )1. A. animals B. troubles
C. strangers D. visitors
( )2. A. came from B. heard from
C. looked at D. arrived at
( )3. A. smaller B. newer 【0:4】
C. older D. bigger
( )4. A. museum B. restaurant
C. hotel D. supermarket
( )5. A. nervous B. surprised
C. upset D. bored
( )6. A. although B. until
C. or D. so
( )7. A. addresses B. directions
C. orders D. suggestions
( )8. A. second B. third
C. fourth D. fifth
( )9. A. got B. turned
C. fell D. jumped
( )10. A. remembered B. dreamed
C. discovered D. hoped
三. 情景交际(每小题1分,共5分)
根据对话内容,从方框中选择恰当的选项补全对话,其中有两项多余。
A: Excuse me, I’m new here. I wonder if you can help me.
B: I’d love to.
A: Thanks. (1)______
B: Yes, there are two. One is on New Street, and the other is on Green Street.
A: (2)______
B: I think the one on New Street is better. It has the newest books.
A: (3)______
B: You can take a bus and it only takes ten minutes.6
A: Thank you. And could you tell me if there is an Italian restaurant around here?
B: Sure. (4)______ The food there is delicious, but it is always crowded. You should go a little earlier to get a table.
A: I see. But could you tell me how I can get there?
B: (5)______ It’s across from the post office.
A: Thanks a lot.
B: You’re welcome.
A. How can I get there?
B. Walk straight for about five minutes, and you will see it.
C. Could you tell me what kind of books the bookstore sells?
D. Could you tell me if there are any bookstores in this town?
E. I often read there.
F. There’s one just on this street.
G. Which is better?
四. 阅读理解(每小题2分,共30分)
A
It’s hard to imagine that just 25 years ago, Berlin was a city split (分开) into two by the Berlin Wall. I’ll never forget how people were excited as the Berlin Wall came down in 19__. Since then, Berlin has become one of the coolest cities in Europe. Here are the main reasons why I think Berlin is cool.
It’s affordable. Berlin has cheap hotels and everyday objects. You don’t have to worry about spending too much money when visiting Berlin.
It has fantastic festivals. Berlin knows how to give parties, and there is a festival here every month of the year. Perhaps the most famous is the Berlin International Film Festival.
It has great architecture (建筑设计). Berlin has beautiful architecture of its own. The Brandenburg Gate, built in the 18th century, is one of the city’s most famous buildings, symbolizing more than 200 years of history. The TV Tower is as good as the Eiffel Tower in Paris and the London Eye.
The art scene is flourishing (繁荣). Berlin is a city of living art. Artists are allowed to create works of art on the sides of buildings.
If you want to visit an affordable European city with culture and lots of colors, Berlin is the place to be. What are you waiting for? Get to Europe’s coolest city before everyone else discovers it.
根据材料内容选择最佳答案。
( )1. How did people feel when the Berlin Wall came down?
A. Surprised. B. Excited.
C. Upset. D. Crazy.
( )2. The underlined word “affordable” in Paragraph 2 means “_____” in Chinese.
A. 可利用的 B. 可触及的
C. 付得起的 D. 用得住的
( )3. How often is there a festival in Berlin?
A. Once a week. B. Twice a week.
C. Once a month. D. Twice a month.
( )4. What’s the TV Tower famous for according to the passage?
A. Its color. B. Its history.
C. Its location. D. Its architecture.
( )5. What does the writer think of Berlin?
A. He can’t stand it. B. He thinks it’s boring.
C. He doesn’t mind it. D. He thinks it’s cool.
B
Without a man, there would be no “happiest place on earth”, also known as Disneyland. That man was Walt Disney.
Disney was born in 1901 in Chicago, Illinois. As a child, he enjoyed drawing and even sold his pictures to his neighbors. In 1918, Disney joined the Red Cross and drove an ambulance (救护车) in France during World War I (第一次世界大战). After the war ended, Disney started making short cartoons in Kansas City, but soon he used up all his money. He decided to get a job in Hollywood. He went to California with only $20 with him.
It took a while, but Disney began to enjoy success with his cartoons. He created Mickey Mouse, the most famous cartoon character ever. Then in 1937, Snow White and the Seven Dwarfs came out and it was a huge success. During the following years, Disney made many more movies that we still watch today, including Pinocchio, Dumbo, and Bambi.
In the 1940s, Disney had an idea of building a fun park for families and the idea grew bigger and bigger ... Years after Disney first had the idea, the first Disneyland opened in 1955 in Anaheim, California. At that time, the ticket cost a dollar. By 1965, 50 million visitors had visited Disneyland.
Disney died in 1966, 5 years before the opening of his next dream park, Disney World in Lake Buena Vista, Florida.
If you ever visit one of the Disney parks, or go to a Disney movie, think of the man who started it all.
根据材料内容选择最佳答案。
( )6. In 1918, Walt Disney ______.
A. moved to California
B. joined the Red Cross
C. made his first short cartoon
D. sold his pictures to his neighbors
( )7. Which of the following Disney movies is NOT mentioned in the passage?
A. Pollyanna. B. Dumbo.
C. Bambi. D. Pinocchio.
( )8. Disney World in Lake Buena Vista, Florida opened in ______.
A. 1940 B. 1965
C. 1966 D. 1971
( )9. Which of the following is TRUE according to the passage?
A. A ticket to Disneyland cost $10 in 1955.
B. Walt Disney showed interest in drawing when he was young.04
C. Snow White and the Seven Dwarfs was not very popular at first.
D. Walt Disney began to enjoy success soon after he went to Hollywood.
( )10. Which is the best title of the passage?
A. Disneyland
B. Disney World
C. The story of Walt Disney
D. Famous Disney cartoon characters
C
Who wants to spend 24 Hours in the Desert? It’s the name of an unusual book. At the beginning, this book describes what a desert is, and then it explains the different kinds of deserts. This book mainly talks about the Sahara Desert, because it is the world’s largest desert. It has an area of about 3.5 million square miles in northern Africa!
Morning life in a desert is described next. In this part, wind, sand, water, and plants relative (有关的) to the desert are discussed. Afternoon life, evening life, and nightlife in a desert are also described. Did you know that the Sahara Desert holds the record for the highest air temperature? Did you also know that sand from the Sahara Desert can ride the winds all the way across the Atlantic Ocean and reach a beach in Florida, USA?
Near the end of the book, one page gives some facts about the Sahara Desert. In the rest of the book, you can find a glossary (术语汇编), a “find out more” part and an index (索引). The “find out more” part gives some books and websites to find out more information about the Sahara Desert.
This book is full of interesting pieces of information. It would be perfect for middle school students.
根据材料内容简要回答下列问题。
11. What does the book 24 Hours in the Desert describe first?
___________________________________________
12. Why does the book mainly talk about the Sahara Desert? 04
___________________________________________
13. Does the book talk about plants relative to the desert?21032
___________________________________________
14. What is the “find out more” part about?
___________________________________________
15. Who would the book be perfect for?
___________________________________________
五. 词汇运用(每小题1分,共5分)
根据句意,用括号内所给单词的适当形式填空。
1. Jim has collected two hundred ________(stamp) since three years ago.
2. I looked around to see who was the ________(speak).5
3. He has to make a ________(choose) between the two shirts.
4. Mr. Liu, did I spell the word ________(correct)?
5. Don’t forget ________(mail) the letter to your sister.
六. 完成句子(每小题1分,共5分)
根据各题后括号内的要求完成下列各题,每空词数不限。
1. Is there a bank near your school? (补全否定答语)
No, _______________.
2. When does the park close? Do you know? (改为含宾语从句的复合句)
Do you know when _______________?
3. Mona doesn’t know what to do next. (改为同义句)
Mona doesn’t know what _______________ next.
4. The restrooms are behind the teaching building. (对划线部分提问)
_______________ the restrooms?
5. The girl felt scared at first. (对划线部分提问)
_______________ the girl feel at first?
七. 综合填空(每小题1分,共10分)
根据材料内容及首字母提示补全文中所缺单词。
Wanda and Tina studied at the same school and they were best friends. They a (1) ate together, played together and studied together. That’s w (2) Wanda was so surprised one day when Tina wouldn’t talk to her. She saved (保留) Tina a seat in the dining hall, b (3) when Tina came in she went off and sat by herself.
Wanda didn’t know what was w (4). Could Tina be angry with her? She thought about what she did and said recently. Was Tina upset because Wanda did b (5) on the history test than her? No, Tina didn’t c (6) about that kind of thing. She was happy that Wanda did well in school.
Wanda d (7) to find out what was the matter. She walked over to Tina. “Tina,” she said softly, “is something wrong?”
Tina l (8) up and was surprised to see Wanda standing next to her. “Oh, hi, Wanda,” she said. “Yes, something is wrong. My cat Zorro d (9) today. I feel really sad. Thanks for asking. You’re a true f (10).” Then she smiled. Wanda sat down next to her friend and gave her a big hug (拥抱).
八. 书面表达(20分)
外籍教师Mrs. Green应邀将在本周五下午来你们学校作报告。假如你是学生会主席张勤,请你根据以下提示用英语给Mrs. Green写一封电子邮件,告诉她如何到你们学校。
提示:1. 乘坐12路公共汽车到和平路下车,沿着和平路直走;
2. 在第二个十字路口向左拐,会看到一个超市;
3. 你们学校就在超市后面。
要求:1. 根据提示内容进行写作,可适当发挥;
2. 80词左右。电子邮件的格式已给出,不计入总词数。
Dear Mrs. Green,
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
Yours faithfully,
Zhang Qin