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四年级课堂练习3

四年级课堂练习3
四年级课堂练习3

小练习(三)

班级姓名

11、揭开雷电之谜

从前人们一直认为,天空中出现电闪雷鸣,这是大自然在显示神威。可是,富兰克林却大胆地提出,那是大自然的一种“放电现象”。1752年7月的一天,他亲自做了一个吸引雷电的风筝实验。

那天,天空乌云密布,雷电交加。富兰克林带着儿子来到费城的郊外。他事先精心制作了一只白色丝绸风筝,风筝上安了一个尖细的铁棒。风筝用麻绳系住,麻绳末端分成两支,分别接上一片铜钥匙和一小段丝线。他手握丝线,将风筝放到天空中。

过了没多久,突然,一道明亮的闪电掠过,顿时大雨倾盆而下。富兰克林觉得手有点麻,当他的手指靠近那只铜钥匙时,一朵蓝色的电火花立刻向手指射过来。他感到手臂一阵麻木,差一点被弹倒。这时,他兴奋地叫了起来:“这就是电,和实验室里的电火花完全一样!”

风筝实验轰动了全世界。后来,富兰克林还发明了“避雷针”,使千万幢楼房和高塔免受雷电的袭击。

1、第2小节中描写天气的词语是:、;第3小节中写天气的句子是这些词句写出了当时天气的,情况。

2、富兰克林制作实验用的风筝所用到的材料为:。制作的步骤:①②

3、用直线画出富兰克林用于为科学献身的句子。

4 照样子把句子写具体:

例:科学家富兰克林是18世纪电学史上的一位勇士

..。他曾冒着生命危险,从天空中摄取闪电,揭开了雷电之谜。

他是一个非常认真负责的小队长。

高大挺拔的树木是我们城市的卫士

..。

5、富兰克林冒着生命危险做“风筝实验”的目的是什么?

12、第一个发明麻醉剂的人

有一次,一个小孩胳膊上长了毒疮,需要割去腐烂的肉。华佗给他动手术,那小孩痛得乱蹦乱跳,发出撕心裂肺般的惨叫。华佗只得叫来几个大汉死死地把他按住,又用绳子捆起来,才勉强把手术做完。

看着痛得死去活来的孩子,华佗心想:有什么办法能使动手术的病人不感到疼痛呢?

事也凑巧,有一天,几个人抬着一个折了腿的汉子来找华佗医治。华佗给他动手术,那汉子不仅没有挣扎、呻吟,反而软绵绵的,任人摆布。手术顺利地做完,他还在发出昏睡的鼾声,一点儿也看不出有什么痛苦。

这是怎么回事?原来,这汉子是喝醉了酒才跌折了腿的,到这时还没有醒过来呢。

看着这醉汉,华佗沉思起来:如果有一种药,让病人吃下去,也像醉了一样,动手术不就没有痛苦了吗?

从此,华佗时时留心,处处搜集单方进行试验,终于合成了一种中药麻醉剂——麻沸散。动手术的病人喝了这种药,便会昏昏入睡,手术结束后才慢慢苏醒。

这样,华佗就成了世界上第一个发明麻醉剂的人。他的发明比外国早了一千多年。

1、“鼾”字的音序,部首,共有画,可组词、。

2、写出近反义词

近义词:凑巧()顺利()沉思()结束()

反义词:软绵绵()痛苦()顺利()昏睡()

3、照样子写词语

软绵绵

4、“沉思”的意思是,在文中用“------”画出华佗沉思内容的句子,从华佗的沉思中我们可以看出他是一个的人。

5、文中画线的句子中“只得”的意思是;“他”指的是;“几个大汉死死地把他按住”等词说明。

6、用“~~~~”画出文中的一句反问句,并改成陈述句。

13、晏子使楚

晏子见了楚王。楚王对他瞅了一眼,冷笑一声说:“难道齐国没有人了吗?”晏子严肃地回答:“这是什么话?我国首都临淄住满了人。大伙儿都把袖子举起来,就能够连成一片云;大伙儿都甩一把汗,就能够下一阵雨;街上的行人肩膀擦着肩膀,脚尖碰着脚跟。大王怎么说齐国没有人呢?”楚王说:“既然有这么多人,为什么打发你来呢?”晏子装着很为难的样子说:“您这一问,我实在不好回答。撒个谎吧,怕犯了欺君之罪;说实话吧,又怕大王生气。”楚王说:“实话实说,我不生气。”晏子拱了拱手说:“敝国有个规矩,访问上等的国家,就派上等人去;访问下等的国家,就派下等人去。我最不中用,就派到这儿来了。”说着他故意笑了笑,楚王也只好陪着笑。

一天,楚王安排酒席招待晏子。正当他们吃得很高兴的时候,有两个武士押着一个囚犯,从堂下走过去。楚王看见了,问他们:“那个囚犯犯的什么罪?他是哪里人?”武士回答说:“是个强盗,齐国人。”楚王笑嘻嘻地对晏子说:“齐国人怎么这样没出息,干这种事情?”楚国的大臣们听了,都得意洋洋地笑起来,他们以为这一下晏子可丢了脸了。哪知晏子面不改色,他站起来说:“大王怎么不知道哇?淮南的柑橘,又大又甜,可是这种橘树一种到淮北,就只能结又小又苦的枳,还不是因为水土不同吗?同样的道理,齐国人在齐国能安居乐业,好好地劳动,一到楚国,就做起强盗来了,也许是两国的水土不同吧。”楚王听了,只好赔不是说:“我原来想取笑大夫,没想到反倒自讨没趣了。”

1、把文中划线的3个句子,概括成3个成语、、。

2、“楚王对他瞅了一眼”这句话中的“瞅”的意思是。你还能写几个表示这个意思的词吗?、、。

3、下面的词语中都有一个“色”字,同“面不改色”的“色”相同解释的是。

A、五颜六色

B、各色各样

C、喜形于色

D、美丽景色

4、联系上下文解释词语

(1)得意洋洋:。

(2)安居乐业:。

5、晏子是个()的人。

14、哥伦布竖立鸡蛋

一次,要西班牙的一个宴会上,一些达官贵人攻击哥伦布,他们以挑衅的口气说:“哥伦布先生,你发现新大陆似乎觉得很了不起,不过在我们看来,这是很平常的事,任何一个人绕着地球转,都会发现这个事实的,即使是傻子也不会视而不见这么一大块土地的。”说罢,这些人不怀好意地哄笑起来。

哥伦布反问一句:“诸位以为那是件平常的事吗?”

“不错,是一件最简单不过的事了。”

那好吧哥伦布接过话头他指着餐桌上盘子里的一只鸡蛋说现在我们不妨做一个试验先生们们当中谁能把这个鸡蛋竖立起来达官贵人们都去试了试,但谁也没能够把鸡蛋竖立起来,都说这是不可能的事。

哥伦布当即拿起鸡蛋,轻轻地在桌上一磕,磕破了一点鸡蛋的尖头,鸡蛋便牢牢地竖立在桌上了。“诸位办不到的事,我不是办到了吗?”

达官贵人哪肯服输,齐声大嚷:“用你这种方法,谁都能把鸡蛋竖立起来,这是最简单不过的事了。”

“是的,这是最简单不过的事,可是刚才你们却谁也没想到。”哥伦布离席而去时还留下了一句令人回味的话:“即使是简单的事也需要有人去发现,去证实。站在后面指手划脚是无用的,关键在于创先。”

1、在括号中填上合适的词语

()()

的口气的话

()()

2、从文中找出下列词语的近义词

实验()简洁()创新()

3、达官贵人们认为是件很平常的事情,因为。

4、“用你这种方法,谁都能把鸡蛋竖立起来,这是最简单不过的事了。”中“这种方法”具体指。

5、细读课文最后一节,联系生活说说你是怎样理解哥伦布离席时说的话的?

新视野英语综合训练三答案

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新概念第一册Lesson课堂及课后练习

新概念一L73-74课内语法考核 语法练习:形容词副词 1.一般情况下直接加“ly”,如quick---quickly 2.以“y”结尾的,先将“y”改成“i”,再加“ly”,如happy---happily 3.少数以e结尾的形容词,要去掉e再加-ly。例如:true-truly等。 但绝大多数以e结尾的形容词仍然直接加-ly。例如:polite-politely,wide-widely 4.不规则变化 练习一

练习二 1. Look at the children on the playground. They are flying kites ________(happy). Let’s join them. 3.Why do you think you did so ___________(bad)in your test 5.We can __________(easy) forgive a child who is afraid of the dark, but we can’t forgive an adult who is afraid of the light. 6.Congratulations! You’ve answered all the questions _________(correct). 7.The computer is ______(wide)used in our daily life. We can do many things with it. 8. I changed into my sports shoes so that I could walk more ____________(comfortable). 9.Mary passed her examination because she studied very ________(hard). 10.“Why didn’t you tell me earlier” The boss shouted _______(hungry). 12.It’s ___(true) possible that robot t eachers will be popular in schools some day. 13. How _________(comfortable) the giant pandas are living in Taiwan! 14.Miss Xu smiled and said to me ________(soft), “Never mind, my boy!” https://www.doczj.com/doc/f01477777.html,st night it rained __________(heavy) in the southern part of the city. 17. Simon hates to be like others, he often tires to do everything ______(different). 19.The children clapped their hands _________(excited) as soon as the astronauts appeared on the stage. 20.Tom had an accident yesterday. His teacher sent him to the hospital ____(quick). 21. We should speak to the old man _________(polite) 23.I’m _______(true) sorry I can’t go with you. I have a lot to do this afternoon. 新一 L73-74 课前测试 一、单词 1周 2 突然地 3 愉快地 4 讲,说 5 衣袋 6 问候,打招呼 7 匆忙地 8 懂,明白 9 微笑10 公共汽车站 二、词组 1心中暗想2自言自语3把---放在哪里 4迷路5去---的路6对---熟悉 7拿出8告诉某人去哪的路 三、写出下列动词的过去式 ___________ ____________ ______________ _______________ ______________ _____________ ______________ _____________

大学英语 一课一练__第三册答案

Key to Model Test (1) Band Three Part I. Writing Sample Writing: On Lifelong Learning With the rapid development of modern society, lifelong learning has been increasingly important. People need to improve themselves all the time by learning in order to adapt to the fast changes and fierce competition in the society. They have to learn about the latest development and techniques to equip themselves. We can achieve lifelong education in several ways. First, you can choose distant education. Most famous universities have set up their own distant education college to help people realize their dreams. Secondly, there are various kinds of training courses and night courses. People can take advantage of their spare time to learn what they are interested in, such as English, computer skills and drawing. In addition, people can study all by themselves. They can read books in a library or a bookstore in their free time. I prefer to distant education provided by some universities. As is known, colleges have excellent faculty, modern teaching facilities and strong learning atmosphere. By distant education courses, we can enjoy these resources, learning more knowledge and making bigger and quicker progress. Part II. Reading Comprehension (Skimming and Scanning) 1. Y. 从文中的第一段第二,三句可以了解到尼古丁的这些特性,从而判断出这一说法是正确的。 2. N. 从文中第二段第二,三句可以判断出题中给出的数字是错误的。 3. N. 从文中第三段第一,五句可以了解到尼古丁对人的身体是有利也有害的,因而题中的说法是错误的。 4. Y. 与文中第四段第二句内容相符,因而正确。 5. N. 与文中第五段第二句意思恰恰相反,因而错误。 6. N. 从文中第五段第九句了解到口中的皮肤可以直接吸收一部分的尼古丁,剩余的尼古丁则会进入肺部,扩散到血管中,通过血管进入心脏,然后到达大脑。 7. N. 与文中第五段倒数第三句的意思恰恰相反,因而错误。 8. 10 seconds. 文中第五段倒数第二句可以找到答案。 9. the release of chemicals associated with pleasure. 文中第六段第二句可以找到答案。 10. dependent on the nicotine. 文中最后一段最后一句可以找到答案。 Part III. Listening Comprehension Section A 11. D. 本题男士的回答是关键,the last person I want to see, 表明他最不想见到Johnson,他不愿意陪同他去长城。 12. D. 女士在回答时说but I have to finish washing my clothes, 表明她不能去看电影。转折后的句子是解题的关键。 13. C. 本题猜测说话人的关系,关键词是article, shelf, newspaper, 此外,还要根据说话人的口气,对选项进行排除才能确定。 14. B. 本题第二人的回答是关键,change the shoes, 表明了对话发生的地点是在商店。 15. D. 男士说don’t waste your money and time; it’s too old,表明这辆车已经不值得修理了。 16. B. pick up a paper 常用语,表示顺便买来的意思。 17. C. 从女士的回答if he can’t handle it, no one can. 表明Alex 是能够做这份工作的。 18. C. 男士的回应forget about it, 表明他的态度,觉得这并不重要。 Conversation one:

中考数学套卷综合训练(三)(含答案)

学生做题前请先回答以下问题 问题1:选择题答题标准动作分别是: ①_________________; 涂卡时,便于快速准确找到答案,同时避免看到具体的选项又回去审题做题,在犹豫中浪费时间 ②_________________; 帮助梳理思路,同时方便检查 ③_________________; 复杂几何图形题,思考过程有可能不是最终的结果,错了可以修改 ④_________________; 主要针对多个命题或选项进行判断的问题,往往根据命题或选项的正误打“√”或“×”(均在序号或选项右上角),最后看题目让选“正确”还是“错误”,再根据要求选答案 ⑤__________________________________. 问题2:中考数学填空题答题标准动作有: ①______________________________________.帮助梳理思路,同时方便检查. ②______________________________________.专注做题、统一誊写. ③抄写到答题卡时,答案_________书写.留有修改余地. ④抄写到答题卡时,__________________________.如果觉得答案有问题,可以换一种思路和方法来验证.修改时,直接将错误答案整体划掉,重新写上完整的正确答案即可. 问题3:选择填空解题策略中常用的两种方法分别是__________,______________. 问题4:测量类应用题在书写时一般分为哪三部分? 中考数学套卷综合训练(三) 一、单选题(共19道,每道3分) 1.下列实数中,属于无理数的是( ) A.3.14 B. C. D. 答案:C 解题思路:

1-3篇课堂练习

1-3篇课堂练习

课堂练习——(第1-3篇) 一、计算题 1.若银行的资本比率为7.5%,资产盈利率为1.1%,股息发放比率为40%.若银行仅靠内源融资来获取资本,并希望保持原有的资本比率.问未来银行的资产能否以10%的速度增长? 2.某商业银行资产负债表显示,现金为100万元,对企业的贷款为80万元,对企业的长期信贷承诺为200万元,请问根据这三项数据计算风险资产为多少?

3.某银行总资产为450亿元,资本金为34亿元,资产收益率为1.1%,税后利润中40%用于分红。根据给定的条件进行计算: (1)如果明年银行预期的资产增长率为12%,那么资产收益率为多少? (2)如果银行计划明年的资本与资产的比例要达到8%,预期资产收益率不变,银行怎样决定分红比例,才能保证资产增长率为12%?

4. 某行的表内及表外资产情况如下: 某行资产负债表 单位:百万美元 权数 资产项目 金额 负债项目 金额 0% 现金 0.7 一级资本 + 二级资本 10 存放央行 10.8 央行债券 6 购买国债 26.4 10% 存放同业 7.9 拆放同业 2.5 贷款 3.9 贴现 4.5 50% 抵押贷款 7.3 负债 138.8

个人按揭9 100% 固定资产 4 担保贷款65.8 合计148.8 合计148.8 某行表外项目资料单位:百万美元 转换系数表外项目金额相应表内项目 风险权数50% 跟单信用证 1 50% 一年以上的 2 100% 授信额度 100% 银行承兑 2 50% 合计 5

计算其资本充足率. 5.某银行的总资产为50亿元,红利分配比例为30%,原有资本为2亿元,未分配利润为2亿元,如果资本与资产比率保持不变,红利分配比例不变,要实现资产10%的增长,需要保持多高的资产收益率水平?

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