练习1(2)

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(完整版)一元二次不等式的经典例题及详解

(完整版)一元二次不等式的经典例题及详解

一元二次不等式专题练习例1 解不等式:(1)015223>--x x x ;(2)0)2()5)(4(32<-++x x x .例2 解下列分式不等式: (1)22123+-≤-x x (2)12731422<+-+-x x x x例3 解不等式242+<-x x例4 解不等式04125622<-++-x x x x . 例5 解不等式x xx x x <-+-+222322. 例6 设R m ∈,解关于x 的不等式03222<-+mx x m .例7 解关于x 的不等式)0(122>->-a x a ax . 例8 解不等式331042<--x x .例9 解关于x 的不等式0)(322>++-a x a a x . 例10 已知不等式02>++c bx ax 的解集是{})0(><<αβαx x .求不等式02>++a bx cx 的解集.例11 若不等式1122+--<++-x x b x x x a x 的解为)1()31(∞+-∞,, ,求a 、b 的值. 例12不等式022<-+bx ax 的解集为{}21<<-x x ,求a 与b 的值. 例13解关于x 的不等式01)1(2<++-x a ax . 例14 解不等式x x x ->--81032.例1解:(1)原不等式可化为0)3)(52(>-+x x x把方程0)3)(52(=-+x x x 的三个根3,25,0321=-==x x x 顺次标上数轴.然后从右上开始画线顺次经过三个根,其解集如下图的阴影部分.∴原不等式解集为⎭⎬⎫⎩⎨⎧><<-3025x x x 或 (2)原不等式等价于⎩⎨⎧>-<-≠⇔⎩⎨⎧>-+≠+⇔>-++2450)2)(4(050)2()5)(4(32x x x x x x x x x 或 ∴原不等式解集为{}2455>-<<--<x x x x 或或说明:用“穿根法”解不等式时应注意:①各一次项中x 的系数必为正;②对于偶次或奇次重根可转化为不含重根的不等式,也可直接用“穿根法”,但注意“奇穿偶不穿”,其法如下图.分析:当分式不等式化为)0(0)()(≤<或x g x f 时,要注意它的等价变形 ①0)()(0)()(<⋅⇔<x g x f x g x f ②0)()(0)(0)()(0)(0)()(0)()(<⋅=⇔≤⎩⎨⎧≠≤⋅⇔≤x g x f x f x g x f x g x g x f x g x f 或或例2(1)解:原不等式等价于⎩⎨⎧≠-+≥+-+-⇔≥+-+-⇔≤+-++-⇔≤+---+⇔≤+--⇔+≤-0)2)(2(0)2)(2)(1)(6(0)2)(2()1)(6(0)2)(2(650)2)(2()2()2(302232232x x x x x x x x x x x x x x x x x x x x xx x x x用“穿根法”∴原不等式解集为[)[)+∞⋃-⋃--∞,62,1)2,(。

2020年语文三年级上册 第一单元 1大青树下的小学 同步练习2(部编版)

2020年语文三年级上册 第一单元 1大青树下的小学 同步练习2(部编版)

部编版三年级上册语文第一单元第1课《大青树下的小学》同步练习一、基础运用1.给划线字选择正确的读音扬________起(yánɡyán)汉________族(hàn hàng)摔跤________(jiáo jiāo)坪坝________(bà pà)打扮________(bàn pàn)凤________尾竹(fèn fèng)【答案】yáng;hàn;jiāo;bà;bàn;fèng【考点】拼音,大青树下的小学【解析】【分析】字音题的考查只要求识记不要求拼写,即侧重于考查识记、辨别、确定字音的能力,准确地判断其正确与否。

识记现代汉语普通话常用字的字音,侧重的是“常用字的字音”。

考查主要涉及同音字、形声字、形近字、多音字、习惯性误读字、方言字、统读字、难读字等。

多音字、习惯性误读字是考试的重点、形声字、形近字次之。

多音字、难读字是“认读”的难点。

复习时应分类整理记忆,以记忆为主,把记忆和训练结合起来。

本题中:扬起(yánɡ)、汉族(hàn)、摔跤(jiāo)、坪坝(bà )、打扮(bàn)、凤尾竹(fèng)。

【点评】这道题目考查学生对汉字字音字形的掌握情况,是语文学习中最基础的知识。

学生在平时的学习中要多读、多记、多写,才能够准确无误书写出来。

2.看拼音,写词语。

xiān yàn cūzhuàng fú zhuāng dú shūzǎo chén鲜________ ________壮 ________ ________书 ________【答案】艳;粗;服装;读;早晨【考点】拼音,字形,大青树下的小学【解析】【分析】本题主要考查对词语(汉字)的拼写能力。

练习1(第2课时)

练习1(第2课时)

小学四年级(下)语文导学案
学习内容练习1(第2课时) 上课时间:总课时:
学习目标练习口语交际,推荐或自我推荐。

写好钢笔字,把字写得端正、美观。

教学重难点重点:学会推荐或自我推荐
难点:推荐别人或自己要说明理由,说话要有条理。

学习过程复备栏
一、学情调查
1.什么是推荐、自我推荐?
2.该如何进行推荐或自我推荐?
◎学习导引——口语交际
1.读一读本次口语交际的要求。

2.你觉得新学期我们班新一届班委会用什么办法来确定组成人员?
二、合作探究
1.新的一届班委会将由哪些委员组成呢?
2.你觉得哪些同学最适合担任呢?
3.了解推荐与自我推荐的要求。

三、展示交流
1.小组练说推荐理由。

2.每组推荐代表发表讲话,师生评议。

◎学习导引(三)——写好钢笔字
(一)合作探究
1.请你先读一读这段话。

2.请你从整体的布局,行款的优美,每个字间架结构等方面仔细观察这段话。

3.通过观察,你有什么发现?
4.你认为哪些字比较难写?与小组同学讨论一下。

5. 认真观察这三个字“植、程、租”。

6.练习描红。

注意观察整体,一气呵成。

(二)展示交流
1.在小组内展示你写得好的字,并说说好在哪儿。

2.对写得不好的字,予以纠正,再练习。

四、达标检测
每人写一份推荐信,要写清楚推荐理由。

五、总结提升
向父母介绍我们班级新一届班委会人员推荐的过程。

六、作业布置
七、板书设计
推荐人选
推荐或自我推荐
推荐理由
教学反思:。

1+X 母婴护理职业技能等级证书(基础知识) 模拟练习题—第1、2章

1+X 母婴护理职业技能等级证书(基础知识) 模拟练习题—第1、2章

1+X 母婴护理职业技能等级证书(基础知识)模拟练习题—第1、2章第一章1.道德规范是靠思想教育、社会舆论、传统习惯和()来维持的。

A.行为规范B.理想信念C.内心信念(正确答案)D.严格自律2.职业道德的特点是:行业性、()、实用性及规范性。

A.持续性B.连续性(正确答案)C.继承性D.操作性3.社会主义职业道德基本规范包含内容,即爱岗敬业、诚实守信、()、服务群众、奉献社会。

A.办事公道(正确答案)B.全心全意C.任劳任怨D.吃苦耐劳4.敬业就是用一种严肃的态度对待自己的工作,勤勤恳恳、兢兢业业、()、尽职尽责。

A.认真负责B.任劳任怨C.忠于职守(正确答案)D.吃苦耐劳5.()就是信守诺言,说话算数,讲信誉,重信用,履行自己应承担的义务。

A.诚实B.诚恳C.承诺D.守信(正确答案)6.奉献社会的精神主要强调的是一种()的全身心投入精神。

A.忘我(正确答案)B.无私C.执着D.真诚7.道德同时也指个人的道德行为、思想品质和()。

A.修养境界(正确答案)B.思想境界C.道德修养D.品德修养8.职业道德的特征是:行业性、()、实用性及规范性。

A.长期性B.持续性C连续性(正确答案)D.延展性9.从事母婴护理工作必须有较高的职业道德和()修养。

A.文化B.品德(正确答案)C.思想D.艺术10.用社会主义核心价值观教育人、培养人、(),是加强职业道德建设的重要内容。

A.团结人B.凝聚人(正确答案)C.影响人D.感化人11.母婴护理人员要善于学习和掌握新知识、新技能,不断提升专业能力、()质量、服务水平。

A.业务(正确答案)B.工作C.操作D.经营12.母婴护理人员在日常生活中,如语言交流、生活习惯、服饰穿着方面,应尊重客户的()。

A.家庭喜好B.家庭文化C.传统习俗D.宗教信仰(正确答案)13.从事母婴护理工作必须有较高的职业道德和()。

A.修养境界B.思想境界C.道德修养D.品德修养(正确答案)14.办事公道是指从业人员在办事情、处理问题时,按照同一标准和同一()办事。

二次根式的化简(2018-2019)

二次根式的化简(2018-2019)

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2021年秋国家开放大学专升本《公共政策概论》习题测试及形考

2021年秋国家开放大学专升本《公共政策概论》习题测试及形考

2021年秋国家开放大学专升本《公共政策概论》第一章绪论1.1小节练习练习1(单选):公共政策是()对社会公共事务管理过程中所制定的行为准则。

a.社会组织b.企业c.政府d.个人正确答案是:政府练习2(单选):美国学者戴维•伊斯顿认为()a.凡是政府决定做的或者不做的事情就是公共政策。

b.公共政策是由政治家,即具有立法权者制定的,而由行政人员执行的法律和法规。

c.公共政策是对全社会的价值做权威性的分配。

d.公共政策是一种具有目标、价值与策略的大型计划。

正确答案是:公共政策是对全社会的价值做权威性的分配。

1.2小节练习练习1(单选):公共政策的核心要素是()a.公共b.利益c.权力d.权威正确答案是:利益2.1小节练习练习1(判断):学者罗伯特•达尔指出“公共政策”的意思与其字面意思相同,即为“公共”而制定的政策。

()正确答案是“错”。

2.2小节练习练习1(多选):政策的导向是()的导向。

a.行为b.条件c.文化d.观念正确答案是:观念, 行为3.1小节练习练习1(判断):公共政策科学在西方经历了创建、形成、自我批判反思和拓展新的研究方向等几个阶段。

()正确答案是“对”。

3.2小节练习练习1(判断):“政策科学”一词是由哈罗德•拉斯韦尔和丹尼尔•勒纳在1951年出版的《政策科学:近来在范畴和方法上的发展》一书中首先提出来的。

()正确答案是“对”。

一、单项选择题试题1公共政策是()对社会公共事务管理过程中所制定的行为准则。

a.企业b.政府c.个人d.社会组织反馈正确答案是::政府试题2美国学者戴维·伊斯顿认为()a.凡是政府决定做的或者不做的事情就是公共政策。

b.公共政策是对全社会的价值做权威性的分配。

c.公共政策是一种具有目标、价值与策略的大型计划。

d.公共政策是由政治家,即具有立法权者制定的,而由行政人员执行的法律和法规。

反馈正确答案是::公共政策是对全社会的价值做权威性的分配。

试题3公共政策的核心要素是()a.权威b.利益c.权力d.公共反馈正确答案是::利益试题4公共政策是对全社会的利益做()的分配。

发展心理学练习题加答案(1-2节)

发展心理学练习题加答案(1-2节)

黄色高亮题目稍有难度,书上没有对应的原文,认真看一下。

第一节概述练习题1.认为心理发展是内因与外因相互作用的结果,持该观点的学者是:*p203A.皮亚杰B.普莱尔C.吴伟士D.施太伦2. 艾里克森认为童年期7岁~12岁的主要发展任务是:*p208A.获得勤奋感,克服自卑感B.获得完善感,避免失望或厌恶感C.获得自主感,克服羞耻感D.获得亲密感,避免孤独感3. 皮亚杰的心理发展观认为心理起源于:* p204A.先天的成熟B.动作C.后天的经验D.吸吮4. 艾里克森认为童年期良好的人格特征是* p208A.希望品质B.意志品质C.目标品质D.能力品质5. 观察学习是指* p201A.有意识地学习他人身上的优点B.学生在老师指导下的野外学习C.一个人的行为直接受到奖励或惩罚而产生的学习D.个人通过观察他人行为及其强化结果,习得某些新的反应8. 艾里克森认为幼儿期良好的人格特征是* p208A.希望品质B.意志品质C.目标品质D.能力品质9. 下列说法中正确的是* p204A.成熟是训练的前提条件B.训练决定机体成熟C.训练是机体成熟的前提条件D.训练对个体的成熟没有影响12. 主体将环境刺激信息纳入并整合到已有的图式之中,以加强和丰富原有的认知结构,这个过程叫* p204A.整合B.同化C.顺应D.平衡13. 皮亚杰把儿童的心理发展划分为* p206A.2个阶段B.3个阶段C.4个阶段D.5个阶段14.皮亚杰认为影响儿童心理发展的基本因素包括* P204A.成熟、经验、社会环境和平衡B.图式、同化、顺应和平衡C.图式、物理经验和数理-逻辑经验D.成熟、经验、同化、顺应15.埃里克森划分人格发展阶段的标准是* p207A.力比多发挥作用B.心理社会危机C.自我的调节作用D.心理防御机制16. 埃里克森认为成年中期良好的人格特征是* p208A.诚实品质B.爱的品质C.关心品质D.智慧品质17.艾里克森认为婴儿后期良好的人格特征是*p208A. 希望品质B. 意志品质C. 目标品质D. 能力品质27. 第一发展加速期是指* p197A.从出生到幼儿期B.从幼儿期到童年期C.从童年期到青春期D.从青春期到青年期29. 学习的最佳期限是指* p203A.心理技能已经发展成熟的时候B.学习条件已经完全具备的时候C.心理技能开始形成之前D.心理技能开始形成之时30. 个体认知发展中最早发生,也是最早成熟的心理过程是* p216A.动作B.感觉C.知觉D.意志解析:书中P216的表述是感知觉是人最早成熟的心理过程。

新教材 牛津译林版高中英语必修第二册全册课后练习 含解析

新教材 牛津译林版高中英语必修第二册全册课后练习 含解析

牛津译林版必修第二册全册课后练习UNIT 1 Lights,camera,action! ................................................................................................... - 1 - 课时练习1 ...................................................................................................................... - 1 - 课时练习2 ...................................................................................................................... - 7 - 课时练习3 .................................................................................................................... - 12 - UNIT 2 Be sporty,be healthy ............................................................................................... - 18 - 课时练习1 .................................................................................................................... - 18 - 课时练习2 .................................................................................................................... - 23 - 课时练习3 .................................................................................................................... - 28 - UNIT 3 Festivals and customs ............................................................................................ - 33 - 课时练习1 .................................................................................................................... - 33 - 课时练习2 .................................................................................................................... - 39 - 课时练习3 .................................................................................................................... - 44 - UNIT 4 Exploring literature..................................................................................................... - 49 - 课时练习1 .................................................................................................................... - 49 - 课时练习2 .................................................................................................................... - 54 - 课时练习3 .................................................................................................................... - 59 - 模块综合测验 ....................................................................................................................... - 65 -UNIT 1 Lights,camera,action!课时练习1Ⅰ.单词拼写根据首字母提示或所给汉语意思写出所缺单词。

(机构适用)现代文阅读提升-课内外联读 第1—2课 说和做——七年级下册语文部编版(含答案)

(机构适用)现代文阅读提升-课内外联读 第1—2课 说和做——七年级下册语文部编版(含答案)

(机构适用)现代文阅读提升-课内外联读第1—2课说和做——七年级下册语文部编版(含答案)现代文阅读(七年级下册专题讲解)配套练习1-2课第一单元邓稼先1.课内阅读邓稼先则是一个最不要引人注目的人均,和他谈话几分钟,就看出他是密厚平实的人。

他真诚坦自,从不骄人,他没有小心眼儿,一生喜欢“纯”字所代表的品格。

在我所认识的知识分子当中,包括中国人和外国人,他是最有中国农民的朴实气质的人。

[[[COMMENT BY Administrator (2021-03-05T15:09:17Z)]]] 答案2[[[---]]]我想邓稼先的气质和品格是他所以能成功地领导各阶层许许多多工作者,为中华民族做了历史性贡献的原因:人们知道他没有私心,人们绝对相信他。

[[[COMMENT BY Administrator (2021-03-05T15:08:10Z)]]] 答案1[[[---]]]“文革”初期,他所在的研究院(九院)和当时全国其他单位一样,成立了两派群众组织,对吵对打。

而邓稼先竟有能力说服两派继续工作,于1967年6月成功地制成了氢弹。

1971年,在他和他的同事们被“四人帮”批判围攻的时候,如果别人去和工宣队、军宣队讲理,恐怕要出惨案。

而邓稼先去了,竟能说服工宣队、军宣队的队员。

[[[COMMENT BY Administrator (2021-03-05T15:08:55Z)]]] 答案1[[[---]]]这是真正的奇迹。

邓稼先是中国几千年传统文化所孕育出来的有最高奉献精神的儿子。

邓稼先是中国共产党的理想党员。

我以为邓稼先如果是美国人,不可能成功地领导美国原子弹工程;奥本海默如果是中国人,也不可能成功地领导中国原子弹工程。

当初选聘他们的人,钱三强和葛罗夫斯,可谓真正有知人之明,而且对中国社会、美国社会各有深入的认识。

①第4段“这是真正的奇迹”一句中“奇迹”指什么?邓稼先为什么能创造这种奇迹?__________________________________________________________________ ___________________________________________②试结合文中有关内容说说下面这句话的含义。

SYB创业培训教材练习题参考答案 (2)

SYB创业培训教材练习题参考答案 (2)

SYB练习册参考答案说明:本书的练习没有标准答案,下面的答案仅供参考。

练习1 李明的鸡场1、李明的企业为什么会倒闭?直接原因是现金流量出现负值,无力支付到期的应付款项,导致破产倒闭。

间接原因在于李明在开业之前没有对启动资金额作出正确的预算,同时对于如何使用资金也缺乏精明的决策(不懂得每一元钱的贷款都必须用于获得最大利润场合的道理。

讲排场,追求产值而不懂理财的基本知识)。

从而使得一个有前途可盈利的企业夭折了。

从中可得到的启发是再好的生意在不懂经营管理老板手里也要做坏。

2、李明应当怎样做?李明看见别人养鸡有利可图,当然也想从事这个行当。

但应该:(1)先去从业(先打工后当老板),打工时可以先作调查研究、观察学习,或是参加创业培训。

(2)仔细估算开业的启动资金需求,并作出资金使用的预算,不乱花钱也决不借多余的钱。

(3)制定创业计划(商业计划)。

(4)从小做起,积累经验。

(破产以后怎么办?去找一份工作,积累资金以图东山再起)练习2 谁能当业主1、白雪和小兰各自的长处和弱点是什么?白雪的长处小兰的长处想多挣钱,能发现商机并有的能发现商机,并着手争取各方一个好构思面理解与支持白雪的弱点小兰的弱点缺乏冒险精神不说,还缺乏深办小旅店除了要对投资作出初步估算之入调查研究深入思考的务实精神。

外,还要懂得有关的法律知识。

在她发起调查研究和争取支持之前还要学习和了解办小旅社的必要知识、技能和一切申办手续。

2、谁将成为一个好的企业创办者?为什么?小兰有可能成为一个好的企业创办者。

因为她具有如下优势:(1)有办企业的强烈愿望。

所谓强烈愿望是指她不空想而是有把构思变为现实的行动。

她有魄力自撰小册子(创业构思)并独自去游说有关的部门。

(2)她知道要创业先得有计划,而计划是要用调查研究市场的数据来支持的。

练习3 一位不成功的企业业主的行为1、王大海的行为有错吗?王大海有错,分析如下:(1)王大海开的是一家小饮食店。

小店的投资人同时也是店经理,他应当负起经营管理的重任。

N - 提示语在前中后练习[1] 2

N - 提示语在前中后练习[1] 2

提示语转换专项训练- F姓名:得分:1、张明对王芳说:“我今天中午要到商店去买东西,回去可能要迟一点,请你告诉我妈妈。

”提示语在后:提示语在中间:2、张老师对小明说:“我今天中午有事情,不能到公园去了,请你告诉张春,叫他不要等我了。

”提示语在后:提示语在中间:3、小明对小芳说:“你的书包非常漂亮,我非常喜欢。

”提示语在后:提示语在中间:4、妈妈对爸爸说:“我明天要去开会。

”提示语在后:5、妈妈对爸爸说:“你去买点菜吧!”提示语在后:6、“孩子,我明天还要去开会。

”妈妈对我说。

提示语在前:提示语在中间:7、“工作太忙了,我明天不能带你去公园了。

”妈妈对我说。

提示语在前:提示语在中间:8、“我明天要去出差,三天后回来。

”妈妈对爸爸说。

提示语在前:提示语在中间:9、“小丽,有时间我一定带你去泰山玩儿。

”叔叔在信里对我说。

提示语在前:提示语在中间:10、“这是我的铅笔,请你还给我!”他对我说。

提示语在前:提示语在中间:11、“桂林山水甲天下,”妈妈说,“今年暑假我们去哪儿看看吧!”提示语在前:提示语在后:12、“我连老师都不怕,”小红对小丽说,“还会怕你吗?”提示语在前:提示语在后:13、"你想去爬山吗?”爸爸对我说,“我带你去!”提示语在前:天道酬勤提示语在后:14、“我看了你的作文,”老师对小明说,“我觉得写的不错。

”提示语在前:提示语在后:15、“小冬,”小军在电话中对我说,“一会儿我去找你玩儿。

”提示语在前:提示语在后:16、“宝贝儿,”妈妈对我说,“你得好好保护眼睛。

”提示语在前:提示语在后:17、“不能这样,”小明生气地说,“这点儿问题怎能把我们难倒呢?”提示语在前:提示语在后:18、“同学们,”老师高兴地说,“告诉你们一个好消息。

”提示语在前:提示语在后:19、“要是路带对了,”军官对夜莺说,“我就把那东西送给你。

”提示语在前:提示语在后:20、“孩子,”妈妈对我说,“今天想吃点什么?”提示语在前:提示语在后:21、武松道:“这可奇怪了!你如何不肯卖酒给我吃?”提示语在中:提示语在后:22、“秦王我都不怕,”蔺相如说,“我还会怕廉将军吗?”提示语在前:提示语在后:23、“诸葛亮神机妙算,我真不如他。

一年级上语文同步练习2+i+u+ü+y+w基础练习a版(部编含答案)

一年级上语文同步练习2+i+u+ü+y+w基础练习a版(部编含答案)

04

人(rén)、火(huǒ)、水 (shuǐ)、云(yún)。
02
基础字词
i u ü y w的生字识记与组词
01
02
03
04
05
拼音i的生字有“i”,组 拼音u的生字有“u”,组 拼音ü的生字有“ü”,组 拼音y的生字有“y”,组 拼音w的生字有“w”,
词为“i四声”。
词为“u四声”。
词为“ü四声”。
总结词
通过字词填空练习,帮助一年级学生掌握常用汉字的书写和意思。
详细描述
本练习包括20个常用汉字的填空,每个汉字都配有拼音、部首、笔画和常见词语的示例。学生需要按 照示例,将正确的汉字填入相应的空格中。通过反复练习,学生可以逐渐掌握常用汉字的书写和意思 。
i u ü y w的短文阅读答案
总结词
通过短文阅读练习,帮助一年级学生提 高阅读理解能力。
w的发音
嘴唇拢圆,舌根抬起,抵住上颚,声音从鼻腔发出 。
i u ü y w的书写规则与示例
• 总结词:掌握i、u、ü、y、w五个单韵母的正确书写格式,了解拼音书写规则。
i u ü y w的书写规则与示例
详细描述 i的书写:先写竖,再写点,占中格和上格。
u的书写:先写竖右弯,再写竖,占中格和上格。
一年级上语文同步练习2 i u ü y w基础练习a版(部编含答案)
汇报人:文小库

CONTENCT

• 汉语拼音 • 基础字词 • 阅读理解 • 写作表达 • 答案与解析
01
汉语拼音
i u ü y w的发音与拼音练习
• 总结词:掌握i、u、ü、y、w五个单韵母的正确发音,熟悉拼音规则。
i u ü y w的发音与拼音练习

二次根式的加减法--旧人教版(新编2019)

二次根式的加减法--旧人教版(新编2019)
问题 韶扇动诸县 咎繇与舜 禹共谈 后曰 昨日游宴北园 太祖至洛阳 知天有授 国有君王 俨复率署等攻之 及践阼 又恐绍侵扰关中 但见亡国之语耳 帝忿然作色而问其故 使有志者自励 至於陛下 时长公主婿卫将军全琮子寄为霸宾客 人云 在左 主人之於我也 六月 所杀伤甚众 以休为骑都尉
古今通义 羽闻之 封畴亭侯 且悉分出 常恨二人之不平 淯舅兄弟三人同时病死 先破秦者王 友发病忧死 恢拓洪业 与恭俱至 从太祖讨孙权 张昭秉众事 唯韩遂 马超最强 臣备腹心 郡发属县五千兵 辄拔军出 不可得详 挟天子而令诸侯 大赦 临难而制变者也 备大惭恚 然其声教遗言 顷 之 予尝为本郡中正 事亦俟时以行止 以求难老 乃者蜀将姜维寇钞脩郡 惇军中震恐 秋七月 是时鲁王霸有盛宠 皆抑黜之 唯陛下察焉 帝手毁其表而竞行猎 然后惟龙为纳言 处山林之间 绣领其众 稍使学书 夜不能寐 令宠向夏口 龙兴践阼 改弦易张 旧出盐铁及漆 遣别将进攻关口 公使 渊等出河东与繇会 况立讬在大位 或共帐而寐 以失大援 度德而让 今及布气之未复 二年春二月 不得过代 陈於堤上 于东界筑小城 延熙七年 太祖取所铸钟 宜应权以密 似指立在身之名 写校始讫 下破其头 别遣羽乘船数百艘会江陵 令众奉燕 时岁大饑 主人虽喜 是以有识之士 何有汉 将军降者 遂战死 有忠於国 张邈字孟卓 交部驿使断绝 说璋转和为巴东属国都尉 刘备屯阳平 常与其亲近成廉 魏越等陷锋突陈 祎等罢驾不行 太祖拒之 私怨人情 抑皆魏代之名守乎 年九十馀卒 眉目疏朗 璋但许兵四千 随坚征伐有功 时郡守以贵戚讬之 阃阈之外 畜财积谷而有忧患之 虞者 布帅众还降 凡斯大义 诏琬曰 寇难未弭 当为孙策将 璋以危亡在近 惟以梳为枇耳 策英气杰济 是诬一朝也 藉战胜之威 皆兄死弟妻其嫂 昔萧何遣子弟入侍 权征关羽 欲以劝戒后人 淮南三万人 而力不敌 知有科禁 有志节任侠 将据成皋 与广陵卫旌同年相善 纳壹妹为夫人 若引而 伸之 然到吴 秉旄仗钺 建兴八年 夷三族 使文武之才效展其用 及得荀令君书 征讨夷越 丁酉 前锋破 犹未足以为庆 累迁为司直中郎将 深薨 吴郡富春人 是时 追豫到马城 於是光部党斩送光首 多士既受普笃之恩 勿与战 使击张鲁 乞垂圣恩 矫情自饰 肃我征旅 郑浑 仓慈 对曰 比臣未 到 论天下事 沛郡竹邑人也 黄武四年 以为可封禅为扶风王 为尚书郎 为《尚书》 《诗》 《论语》 《三礼》 《左氏解》 秋九月 左右结山侠筑两城 严欲荐洪於州 破之 军还谯 恐将军不能御也 纳万彧之说 晨夜赴救 徙在犍为 不如击长离诸羌 斩奉导军 谁可以继之 彧荐嘉 乡邑从 其风化 车骑将军张飞长女也 先主随谭到平原 坐守都 雒 兖州刺史岱 豫州刺史伷 陈留太守邈 东郡太守瑁 广陵太守超等 久不相与语 临邛令 幹既不能 语在后妃传 近世之嘉史 勋内行既脩 有扶危之功 进封长平侯 西讨贰师 大宛 声布四远 常士畏教慕善 宓陈天时必无其利 还所略宫 人公卿百官 信义著於四海 文辞壮丽 荆州北据汉 沔 户五百 轻贵有馀 披草莱 引军退还 慈行已过 进爵为公 亟以时成东堂 堂成 处尊显之官 不拘制度 太祖每征伐 死伤过半 刘备袭刘璋 咸假其命而以为辞焉 欲讨黄祖 而凌统 董袭等尽锐攻之 白虎门北楼灾 高概节行 徙涪陵令 大王 今若委质於魏 时年四十一 未有不亡之国 初 作天子 廷尉丁密 光禄勋孟宗为左右御史大夫 不能千人 受礼若吊 臣辄奉宣诏命 九有有截 侍中 尚书 长史 参军 亲理之路通 馥等到官 拜假难升米为檄告喻之 太子奉车 诸王驸马都尉 大将军蒋琬领刺史 桓帝时有黄星见于楚 宋之分 为卓

大学本科大英三复合式听写练习18-19-1(2)

大学本科大英三复合式听写练习18-19-1(2)

Compound DictationPassage OneThe pursuit of success is a natural human drive. We all desire success in one form or another. Perhaps we want to get a 1 , or run a successful business, or be respected for our art. But if we are going to put a good deal of our youthful 2 into achieving a goal, it's worth taking the time to ask ourselves whether the goal is worth 3 . If we ask ourselves why we wish to achieve anything, the 4 answer is that we believe it will make us happy. Now we must 5 whether this is true, and whether there might be a quicker 6to happiness, and most importantly, whether the pursuit of this future happiness is risking our happiness today. The Greek philosopher Aristotle7 an experiment about happiness. He said that if you ask anyone why they are doing something or what they are doing, their 8 answer will be because it makes them happy. A person starting up her own business might initially say she wants to make money and have more 9 . Ask her why and she'll say because it will let her spend more quality time with her family, ask her again and she'll say that this quality time will bring her happiness. We all look for happiness most of the time every day. Butwe 10 stop and ask ourselves –– are we pursuing it in the most 11 way? We'll examine how efficient our business plan is, or our work 12 , or our golf drive, but we don't stop to look at whether we are 13 moving towards happiness. In order to achieve the goal of happiness, we should 14 asking ourselves whether our life map is leading us toward happiness by the fastest 15 .Passage TwoFor most people, shopping is still a matter of 1 down the high street or loading a cart in a shopping mall. Soon, that will change. Electronic commerce is growing fast and will soon bring people more choices. There will, however, be a cost: protecting the consumer from2 will be harder. Many governments therefore want to3 high street regulations to the electronic world. But politicians would be wiser to see cyberspace (网络空间) as a basis for a new era of corporate (全体的) self-regulation. Consumers in rich countries have grown used to the idea that the government takes4 for everything from the stability of the banks to the safety of the drugs, or their rights to a refund (退款) when goods are faulty. But governments cannot5 national laws on businesses whose only presence in their country is on the screen. Other countries have6 , but the rules of consumer protection differ, as does enforcement. One answer is for governments to7 more: to recognize each other's rules. But that requires years of work and volumes of8 rules. And plenty of countries have rules too fanciful for sober states to accept. There is, however, an9 . Let the electronic businesses do the "regulations" themselves. They do, after all, have a self-interest in doing so. In electronic commerce, a good 10 for honest dealing will be a valuable competitive asset for all businesses. Governments, too, may compete to be trusted. Forinstance, customers ordering medicines online may prefer to buy from the United States because they trust the 11 screening of the Food and Drug Administration; or they may decide that the FDA's rules are too strict, and buy from Switzerland instead. Consumers will need to use their judgment. But 12 because the technology is new, electronic shoppers are likely for a while to be a lot more 13 than consumers of the normal sort—and the new technology will also make it easier for them to 14 noisily when a company lets them down. In this way, at least, the coming of technology may 15 for fewer consumer protection laws, not more.Passage ThreeOne of the greatest things about 1 over advertising is the greater fuss, the more of a 2 the industry itself seems to become. Advertising is an area that 3 intense passion and emotion. It seems to affect those who attack it and those who defend it in similar ways. Before long both are exhibiting the same overwhelming urge to 4 their case and it then becomes 5 to believe that the critics and the defenders of advertising are even arguing over the same thing. But just as it seemed 6 to us to accept advertising without going to either extreme, it also seemed 7 to try and find out what advertising in the Britain of the sixties was really like. We knew it expended about 500 million dollars a year and it employed over 200, 000 individuals with higher 8 . But once we tried finding out 9 what all this money was spent on, what all these highly paid individuals did for it, a curious thing happened. This strange animal called advertising began to 10. In its place were advertising men and advertising 11 , all working in different ways and to different rules and all showing obvious differences of ability, taste and 12 . We ended by discovering groups of well-paid, highly anxious advertising individuals. They were all trying hard, in their various ways to endure the opposed and often 13 pressures within their work. Their success or failure resulted from their 14 . All this seemed of considerable importance, and any future move to reform advertising will have to make the 15 effort to understand what it is about and why its individuals behave as they do.Passage FourUnemployment and poverty are the two major 1 that are facing the world economy at present. Unemployment leads to financial crisis and 2 the overall purchasing power of a nation. This in turn results in poverty followed by increasing burden of debt. Now, poverty can be 3 in several ways. According to the World Bank, poverty manifests a financial condition where people are unable to 4 the minimum standard of living. Poverty can beof different types like absolute poverty and relative poverty. There may be many other 5 like urban poverty, rural poverty, primary poverty, 6 poverty and many more. Whatever the type of poverty, the basic reason has always been lack of respectable income. Here comes the role of unemployment behind poverty. Lack of employment opportunities and the7 income difference bring about mass poverty in most of the developing and underdeveloped economies of the world. Lack of effective demand of labor is one of the 8 reasons for unemployment. In the less developed economies a substantial portion of the total workforce works as surplus labor. This problem is 9 prevailing in the agricultural10 . Due to excess labor, the marginal productivity of the workforce may be zero or even11 . This excess pool of labor is the first to become unemployed during the period of economic or social crisis. When a capitalist economy 12 some dynamic changes in its organizational structure, it results in structural unemployment. This type of unemployment may also 13 if the lack of effective demand continues for a substantially long period of time. In case of frictional unemployment(摩擦性失业), workers are 14 unemployed. There may be cases of hidden unemployment where workers restrain themselves from working due to absence of appropriate 15 .Passage FiveIn recent years, American society has become increasingly 1 on its universities to find 2 to its major problems. It is the universities that have been charged with the principal responsibility for developing the 3 to place men on the moon; to deal with our deteriorating environment; to develop the means to feed the world's rapidly increasing population. The effort 4 in meeting these demands results in its own problems. This5 on the creation of new knowledge significantly affects the universities' efforts to perform their principal functions, the6 and interpretation of knowledge, the imparting of the heritage (传统) of the past and the preparing of the next generation to carry it forward. With regard to this task, universities today7 find themselves in a serious bind. On the one hand, there is the American8 to provide higher education for all young people who can profit from it. The result of this has been a dramatic increase in an enrollment in our universities,9 with a radical shift from the private to the public sector of higher education. On the other hand, there are serious limitations on the resources 10 for higher education. While higher education has become a great "growth industry," it is also simultaneously a tremendous drain on the resources of this nation. One 11 aspect of this drain on resources lies in the shortage of trained 12 , which, in turn, has led to a declining standard in instruction. 13 these difficulties is the concern with research, with its competing claims on resources and faculty. In addition, there is a strong14 for the institutions' organization and functionality to 15 to the demands of research rather than those of teaching.Passage SixWhat is leadership? Its qualities are difficult to define. But they are not so difficult to1 . Leaders don't force other people to go along with them. They bring them along. Leaders get2 from others by giving it themselves, by building an environment that encourages creativity, and by operating with3 and fairness. Good leaders aren't "lone rangers" (独行侠). They4 that an organization's strategies for success require the combined talents and efforts of many people. Leadership is the5 for transforming those talents into results. Successful leaders are emotionally and intellectually oriented to the future – not sticking to the past. They have a hunger to take responsibility, to6 , and to take the lead. They are not7 with merely taking care of what's already there. They want to move forward to create something new. Leaders provide answers as well as direction, offer strength as well as8 , and speak from experience as well as understanding from the problems they face and the people they work with. Leaders are9 . They believe in unity rather than yielding. And they 10 to achieve agreements out of 11 . Leadership is all about getting people 12 to give their best, helping them to grow to their fullest 13 , and motivating them to work toward a common good. A good leader, an effective leader, is one who has respect. A leader who has respect for other people at all 14 of an organization will find that respect is returned. If you have their respect, they will be motivated to work 15 to accept your ideas, to follow you and to take actions.Compound DictationPassage OneThe pursuit of success is a natural human drive. We all desire success in one form or another. Perhaps we want to get a promotion, or run a successful business, or be respected for our art. But if we are going to put a good deal of our youthful energy into achieving a goal, it's worth taking the time to ask ourselves whether the goal is worth attaining. If we ask ourselves why we wish to achieve anything, the inevitable answer is that we believe it will make us happy. Now we must reflect whether this is true, and whether there might be a quicker approachto happiness, and most importantly, whether the pursuit of this future happiness is risking ourhappiness today. The Greek philosopher Aristotle proposed an experiment about happiness. He said that if you ask anyone why they are doing something or what they are doing, their ultimate answer will be because it makes them happy. A person starting up her own business might initially say she wants to make money and have more freedom. Ask her why and she'll say because it will let her spend more quality time with her family, ask her again and she'll say that this quality time will bring her happiness. We all look for happiness most of the time every day. But we rarely stop and ask ourselves –– are we pursuing it in the most productive way? We'll examine how efficient our business plan is, or our work schedule, or our golf drive, but we don't stop to look at whether we are efficiently moving towards happiness. In order to achieve the goal of happiness, we should consider asking ourselves whether our life map is leading us toward happiness by the fastest route.Passage TwoFor most people, shopping is still a matter of wandering down the high street or loading a cart in a shopping mall. Soon, that will change. Electronic commerce is growing fast and will soon bring people more choices. There will, however, be a cost: protecting the consumer from fraud will be harder. Many governments therefore want to extend high street regulations to the electronic world. But politicians would be wiser to see cyberspace (网络空间) as a basis for a new era of corporate (全体的) self-regulation. Consumers in rich countries have grown used to the idea that the government takes responsibility for everything from the stability of the banks to the safety of the drugs, or their rights to a refund (退款) when goods are faulty. But governments cannot enforce national laws on businesses whose only presence in their country is on the screen. Other countries have regulators, but the rules of consumer protection differ, as does enforcement. One answer is for governments to cooperate more: to recognize each other's rules. But that requires years of work and volumes of detailed rules. And plenty of countries have rules too fanciful for sober states to accept. There is, however, an alternative. Let the electronic businesses do the "regulations" themselves. They do, after all, have aself-interest in doing so. In electronic commerce, a good reputation for honest dealing will be a valuable competitive asset for all businesses. Governments, too, may compete to be trusted. For instance, customers ordering medicines online may prefer to buy from the United States because they trust the rigorous screening of the Food and Drug Administration; or they may decide that the FDA's rules are too strict, and buy from Switzerland instead. Consumers will need to use their judgment. But precisely because the technology is new, electronic shoppers are likely for a while to be a lot more cautious than consumers of the normal sort—and the new technology will also make it easier for them to complain noisily when a company lets them down. In this way, at least, the coming of technology may argue for fewer consumer protection laws, not more.Passage ThreeOne of the greatest things about controversy over advertising is the greater fuss, the more of a mystery the industry itself seems to become. Advertising is an area that requires intense passion and emotion. It seems to affect those who attack it and those who defend it in similar ways. Before long both are exhibiting the same overwhelming urge to exaggerate their case and it then becomes complicated to believe that the critics and the defenders of advertising are even arguing over the same thing. But just as it seemed sensible to us to accept advertising without going to either extreme, it also seemed logical to try and find out what advertising in the Britain of the sixties was really like. We knew it expended about 500 million dollars a year and it employed over 200, 000 individuals with higher salaries. But once we tried finding out exactly what all this money was spent on, what all these highly paid individuals did for it, a curious thing happened. This strange animal called advertising began to disappear. In its place were advertising men and advertising agencies, all working in different ways and to different rules and all showing obvious differences of ability, taste and effectiveness. We endedby discovering groups of well-paid, highly anxious advertising individuals. They were all trying hard, in their various ways to endure the opposed and often contradictory pressures within their work. Their success or failure resulted from their consistency. All this seemed of considerable importance, and any future move to reform advertising will have to make the mental effort to understand what it is about and why its individuals behave as they do.Passage FourUnemployment and poverty are the two major challenges that are facing the world economy at present. Unemployment leads to financial crisis and diminishes the overall purchasing power of a nation. This in turn results in poverty followed by increasing burden of debt. Now, poverty can be described in several ways. According to the World Bank, poverty manifests a financial condition where people are unable to maintain the minimum standard of living. Poverty can be of different types like absolute poverty and relative poverty. There may be many other classifications like urban poverty, rural poverty, primary poverty, secondary poverty and many more. Whatever the type of poverty, the basic reason has always been lack of respectable income. Here comes the role of unemployment behind poverty. Lack of employment opportunities and the resultant income difference bring about mass poverty in most of the developing and underdeveloped economies of the world. Lack of effective demand of labor is one of the principal reasons for unemployment. In the less developed economies a substantial portion of the total workforce works as surplus labor. This problem is particularly prevailingin the agricultural sector. Due to excess labor, the marginal productivity of the workforce may be zero or even negative. This excess pool of labor is the first to become unemployed during the period of economic or social crisis. When a capitalist economy undergoes somedynamic changes in its organizational structure, it results in structural unemployment. This type of unemployment may also emerge if the lack of effective demand continues for a substantially long period of time. In case of frictional unemployment(摩擦性失业), workers are temporarily unemployed. There may be cases of hidden unemployment where workers restrain themselves from working due to absence of appropriate facilities.Passage FiveIn recent years, American society has become increasingly dependent on its universities to find solutions to its major problems. It is the universities that have been charged with the principal responsibility for developing the expertise to place men on the moon; to deal with our deteriorating environment; to develop the means to feed the world's rapidly increasing population. The effort involved in meeting these demands results in its own problems. This concentration on the creation of new knowledge significantly affects the universities' efforts to perform their principal functions, the transmission and interpretation of knowledge, the imparting of the heritage (传统) of the past and the preparing of the next generation to carry it forward. With regard to this task, universities today generally find themselves in a serious bind. On the one hand, there is the American commitment to provide higher education for all young people who can profit from it. The result of this has been a dramatic increase in an enrollment in our universities, coupled with a radical shift from the private to the public sector of higher education. On the other hand, there are serious limitations on the resources available for higher education. While higher education has become a great "growth industry," it is also simultaneously a tremendous drain on the resources of this nation. One crucial aspect of this drain on resources lies in the shortage of trained faculty, which, in turn, has led to a declining standard in instruction. Intensifying these difficulties is the concern with research, with its competing claims on resources and faculty. In addition, there is a strong tendency for the institutions' organization and functionality to conform to the demands of research rather than those of teaching.Passage SixWhat is leadership? Its qualities are difficult to define. But they are not so difficult to identify. Leaders don't force other people to go along with them. They bring them along. Leaders get commitment from others by giving it themselves, by building an environment that encourages creativity, and by operating with honesty and fairness. Good leaders aren't "lone rangers" (独行侠). They recognize that an organization's strategies for success require the combinedtalents and efforts of many people. Leadership is the accelerator for transforming those talents into results. Successful leaders are emotionally and intellectually oriented to the future – not sticking to the past. They have a hunger to take responsibility, to innovate, and to take the lead. They are not content with merely taking care of what's already there. They want to move forward to create something new. Leaders provide answers as well as direction, offer strength as well as dedication, and speak from experience as well as understanding from the problems they face and the people they work with. Leaders are flexible. They believe in unity rather than yielding. And they strive to achieve agreements out of conflict. Leadership is all about getting people consistently to give their best, helping them to grow to their fullest potential, and motivating them to work toward a common good. A good leader, an effective leader, is one who has respect. A leader who has respect for other people at all levels of an organization will find that respect is returned. If you have their respect, they will be motivated to work diligently to accept your ideas, to follow you and to take actions.。

预防医学课本练习题(1)(2)

预防医学课本练习题(1)(2)

绪论1、预防医学的研究对象是:A、病人B、健康人C、个体D、确定的病人E、个体和确定的群体2、预防医学的研究内容,不包括:A、分析疾病分布与健康水平的动态变化B、分析疾病分布病制订治疗方案C、研究与制订预防疾病、促进健康的策略和措施D、探讨卫生保健与疾病防治的组织和管理方法E、研究环境因素对健康的影响3、关于预防医学的研究方法,错误的是:A、调查研究方法、实验研究方法、临床观察方法B、实验研究方法包括现场试验与实验室试验C、宏观研究方法与微观研究方法相结合D、使用实验动物的整体或离体实验(实验室试验)称为微观试验E、临床观察、实验动物的整体实验称为宏观研究4、关于预防医学的特点叙述正确的是:A、工作对象侧重于病人B、工作方法侧重于微观研究C、采取的对策更利于治愈疾病D、采取的对策更具有积极的预防作用E、侧重于疾病发生后的康复5、既属于第一级预防,也属于第三级预防的是:A、治理环境污染B、禁止在公共场所吸烟C、体力活动促进D、高血压管理E、脑卒中病人的康复训练6、属于第二级预防的是A、开展宣传教育,提高防病知识以及自我保健B、做好妇女保健、儿童保健、老年保健C、做好婚前检查和优生优育工作D、切断性传播疾病的传播途径E、保护环境、防止污染7、疾病类型不同,三级预防策略亦有所不同。

下述疾病在采取第一级预防的同时,还应兼顾第二级和第三极预防的是:A、细菌性痢疾B、恶性肿瘤C、食物中毒D、职业中毒E、营养缺乏病8、健康观是指人们对健康的看法,关于现代健康观的内涵的叙述错误的是:A、主要依赖于自我保健与预防措施B、主要依赖于医生与药物C、人力资源的组成部分D、健康权是与每个人密切相关的、实实在在的人权E、不仅长寿,而且有更好的生命质量9、Bruhn等对宾夕法尼亚州意大利人聚集的一个小镇Reseto进行了研究,发现这个小镇的死亡率比邻镇的死亡率低。

其研究结论是:该小镇人群良好的健康主要是由于他们有紧密联系的社会关系,与其平均主义特征和人们的互助精神有关。

2020统编版四年级上册语文练习-1《观潮-2》人教(部编版) (有答案)

2020统编版四年级上册语文练习-1《观潮-2》人教(部编版) (有答案)

部编版四年级语文上册一课一练1.观潮一、看拼音写汉字。

pàn wàng jù shuō lǒng zhào dùn shí zhú jiàn二、用“√”画出下列加点字在括号里正确的读音。

1.钱塘江大潮,自古以来被称(chēn chēng chèng)为天下奇观。

2.我们随着观潮的人群,登上了海塘大堤(tītí dī)。

3.江面笼罩着一层蒙蒙的薄(bó báo)雾。

4.从远处传来隆隆的响声,好像闷(mēn mèn)雷滚动。

5.江面上依旧风号浪吼( hǒu kǒng)。

三、我能根据意思写词语A、奇特而又罕见的景象。

()B、形容隐隐约约,不大清楚。

()C、人群发出的声音像水在锅里沸腾一样,用来形容人声嘈杂喧闹。

()D、变成原来的样子。

()四、给加点的字选择正确解释。

观:A.看B.看到的景象C.对事物的认识、看法;1.奇观()景观()观察()观点()若:A.如果,假如B.如,像C.你2.若隐若现()求贤若渴()若是()若辈()五、按要求写句子。

1.钱塘江大潮,自古以来被称为天下奇观。

(改为反问句)__________________________________________________________________________ 2.宽阔的钱塘江横卧在眼前。

(缩句)__________________________________________________________________________ 3.浪潮越来越近,犹如千万匹白色战马齐头并进,浩浩荡荡地飞奔而来。

(仿写句子)__________________________________________________________________________ 六、按顺序排列下面的句子,用序号表示。

四年级上册科学第一单元《声音》第1、2课同步练习(教科版 含答案)

四年级上册科学第一单元《声音》第1、2课同步练习(教科版 含答案)

四年级上册科学1.1听听声音(同步练习)一、选择题1.明明站在观众席对面喊豆豆。

明明发出的声音,主要是()振动产生的。

A.声带B.舌头C.嘴唇2.工厂里机器的轰鸣声属于()。

A.自然界的声音B.动物的声音C.人类生产生活的声音3.下列不属于噪音的是()。

A.机器的轰鸣声B.午夜的钢琴声C.教师上课4.《听听声音》中描述声音有“高、低;强、弱;悦耳、刺耳”三组科学词汇。

下列声音中,属于刺耳的是()。

A.窃窃私语声B.钢琴声C.鞭炮声5.不是耳朵的结构是()。

A.耳郭B.外耳C.中耳D.内耳6.有经验的人买碗时常常把两只碗碰一碰,通过辨别声音的()来判断碗的好坏。

A.音调B.响度C.音色D.音量7.不同物质传播声音的本领()。

A.不同B.相同C.无法判断8.当你在打哈欠的时候,会听不清或听不到别人对你说话,重要原因是打哈欠影响了()。

A.鼓膜的振动B.听小骨的振动C.耳廓的振动D.听觉神经的振动二、填空题9.在我们学过的成语中,有些是描述声音的。

如“人声鼎沸”,这种环境下的声音属于_________,“轻言细语”,说明说话人声音的_____(选填“音高”或“音量”)很小。

10.声音可以用高低、_________、悦耳、_________等词语来进行描述。

11.在车站、菜市场等地经常会听到( )的声音。

12.在“do、re、mi”这三个音阶中,________的声音最低,用数字1表示,________的声音最高,用数字3表示。

13.我们可以这样描述鸟叫声:很动听,一会儿( ),一会儿( )。

14.噪声计是用来测量________的仪器。

15.汽车紧急刹车时,声音比较______(刺耳/悦耳),钢琴的声音比较______(刺耳/悦耳)。

16.我们周围的声音可以分为三大类:动物、( )和( )发出的声音。

17.在耳朵的各个部分中,能将声音转化为振动的是( )。

三、判断题18.我们不时地听到各种声音,自己也能发出多种不同的声音。

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一、学情调查
指名朗读散文诗《丝丝春雨》
二、学习板块(一)
◎学习导引:精讲点拨
写好钢笔字
1.指导
(1)读题目,明确练习要求。

(2)朗读这段话,了解内容。

(3)仔细观察,说出哪些字不宜和其他字写整齐,写成一样大小。

(4)重点研讨:“鲁迅、迟到、事事”等词和整体布局。

2.练习
(1)练习描红。

(注意起笔、运笔和收笔)
(2)小组内根据描红情况及时小结。

(3)仿写。

(要求一气呵成,注意行款布局)
3.交流反馈
(1)展示写得好,写得有进步的。

(2)对写得不好的,进行评议。

三、学习板块(二)口语交际
1.审题
(1)请别人帮忙时,你该怎样说?别人请你帮忙时,你该怎样说?
(2)读题,明确这次口语交际的要求。

2.指导
(1)读一读题中三种场合下所遇到的困难和麻烦。

(2)针对每一个问题,思考清楚每种场合遇到的困难和麻烦各是什么,在这种场合下应该怎么向别人说清楚自己的要求,该用什么样的礼貌用语。

(交流课前搜集的礼貌用语)
(3)分组分问题练说。

(注意全过程中礼貌用语的使用)
(4)每组每个问题推荐代表讲话,师生评议。

3.交流反馈。

(1)上台分角色(帮助者和被帮助者)表演。

(师生评议:有无达到“说清楚话得体有礼貌”的要求
(2)评议小结。

四、总结提升。

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