第二模块练习题答案
外研版五年级英语下册Module 2 基础练习含答案
外研版五年级英语下册Module 2 基础练习重点语音。
判断下列每组单词中画线部分读音是(Y)否(N)一致。
重点词汇。
(英汉互译)(一)动词类1.写(write的过去式)2.学习(study的过去式)3.learnt4.taught5.学习跳舞6.写一本书(二)人物1.dancer2.an English teacher3.a good pupil(三)其他nguage2.hard3.foreign4.twenty years ago5.foreign languages重点句型。
(英汉互译)(一)询问某人过去是否做过某事的句型及其答语1.——她学过一些外语吗?——是的,她学过英语。
2.——他也学过英语吗?——不,他没有学过。
(二)描述某人过去的职业或身份1.她是一名舞蹈演员。
2.他是一名好学生。
(三)询问某人是谁及其答语——他们是谁,玲玲?——他们是我的(外)祖父母。
(四)描述某人过去做过某事1.She taught languages and wrote a book.2.She danced in lots of Chinese cities.(五)描述某人正在做某事1.But he’s learning English now!2.He’s teaching Mr Li.重点语法。
(一)用所给词的适当形式填空。
1. Did Mr Li (taught) English ten years ago?2. (Be)your grandma a dancer twenty years ago?3.Did she have (some)food today?(二)根据图片提示,写答语。
1.Did you fly a kite yesterday?2.Were they pupils ten years ago?情景交际。
(一)给下列问句选答语。
()1.Who’s this?()2.Is this your brother?()3.Did your brother play football yesterday? ()4.Who are they, Mary?()5.Did she learn English?()6.Was your grandma a dancer?(二)补全对话。
中职高二语文拓展模块第二单元练习题
18.对下列各句句式判断不正确的一句是( C )
A.会于会稽山阴之兰亭(状语后置句) B.死生亦大矣(判断句) C.是日也,天朗气清(判断句) D.仰观宇宙之大(定语后置句)
19.从下列句子中选出与“少长咸集”活用类
型相同的一项( D )
A.王无罪岁 B.且夫天下非小弱也 C.固知一死生为虚诞 D.群贤毕至
9.下列句子与“为击破沛公军”句式相同的一项是
(C)
A.具告以事
B.吾属今为之虏矣
C.将军战河北
D.夺项王天下者必沛公也
10.解释成语:
⑴项庄舞剑,意在沛公: _项__庄_席__间__舞_剑__,__企_图__刺_杀__刘__邦_。__比__喻_说__话__和_行__动_的_______ _真__实_意__图__别_有__所__指_。____________________________
1.下列词语中红色的字的注音有误的一项是( C )
A.甿(méng)隶 万乘(shèng)
锄耰(yōu)棘矜(qín)
B.鞭笞(chī)
从(zòng)散约败 瓮牖(yǒu)绳枢
C.隳(huī)名城 蹑足行(háng)伍 度(dù)长絜大(jié)
D.窥(kuī)周室 亡矢(shǐ)遗镞(zú) 逡巡(qūn)
13.下列句中没有通假字的一项是( D )
A.颁白者不负戴于道路矣 B.涂有饿莩而不知发 C.王无罪岁 D.谨庠序之教
14.下列句中红色字词类活用的不同的一项是
( D)
A.填然鼓之
B.然而不王者
C.五十者可以衣帛矣 D.谨庠序之教
15.选出与“未之有也”句式相同的一项( )
A.A时不我待
B.是亦走也
(6)文章最后一段得出的结论“仁义不施而攻守之势异也”就是本文的
模块一、二综合练习题答案
模块一、二综合练习题答案一.判断题1、计算车外圆的切削速度时,应按照已加工表面的直径数值进行计算。
(×)2、刀具前角的大小,可以是正值,也可以是负值。
(√)3、刀具的主偏角具有影响切削力、刀尖强度、刀具散热的作用。
(√)4、金属的切削过程也是形成切屑和已加工表面的过程。
(√)5、精加工相对于粗加工而言,刀具应选择较大的前角和较小的后角。
(×)6、刃倾角的作用是控制切屑的流动方向并影响刀头的强度,所以粗加工应选负值。
(√)7、切削加工中,常见机床的主运动一般只有一个。
(√)8、工艺系统刚性较差时(如车削细长轴),刀具应选用较大的主偏角。
(√)9、粗车主要目的是切除工件上的大部分余量,精车的主要目的是保证工件的精度和减小表面粗糙度Ra值。
(√)10、车削加工不宜加工硬度在30HRC以上的淬火钢。
(√)11、90度车刀(偏刀),主要用来车削工件的外圆、端面和台阶。
(√)12、一夹一顶装夹,适用于工序较多、精度较高的工件。
(×)13、两顶尖装夹方式适用于装夹重型轴类零件。
(×)14、两顶尖装夹粗车工件,由于支承点时顶尖,接触面积小,不能承受较大切削力,不宜使用。
(√)15、车削内孔时排屑和冷却较困难。
(√)16、圆柱孔的测量比外圆测量困难。
(√)17、车削套类零件的刀柄受孔径及孔深的影响,刚性较差。
(√)18、麻花钻可以在实心材料上加工内孔,不能用来扩孔。
(×)19、车孔时的切削用量应比车外圆低一些。
(√)20、细长轴通常用一夹一顶或两顶尖装夹的方法来加工。
(√)21、为了防止和减少薄壁零件工件加工时产生变形,加工时应分粗、精车。
(√)22、车削薄壁零件时,尽量不用径向夹紧法,最好用轴向夹紧法。
(√)23、车削短小套类零件时,为保证内、外圆轴线的同轴度,可用一次装夹车削。
(√)24、在立式铣床上不能加工键槽。
(×)25、卧式铣床主轴的中心轴线与工作台面垂直。
英语中职基础模块2练习册答案
英语中职基础模块2练习册答案练习一:词汇与短语1. 根据题目所给的单词,选择正确的答案。
- A. 形容词:amazing- B. 动词:enjoy- C. 名词:opportunity2. 根据句子的语境,填入合适的短语。
- I am looking forward to meeting you.- She is in charge of the project.3. 将下列短语翻译成英文。
- 面对困难:face difficulties- 取得进步:make progress练习二:语法填空1. 根据句子结构,在空白处填入正确的单词或短语。
- The book is __interesting__ (interesting) than the movie. - She has __been studying__ (study) English for three years.2. 根据上下文,选择正确的时态。
- I __have been__ (have been) working here since 2019.- They __will go__ (will go) to the concert tonight.练习三:阅读理解1. 阅读下列短文,回答问题。
- What is the main idea of the passage?- The main idea is about the benefits of learning a second language.2. 根据短文内容判断正误。
- The author believes that learning a second language can improve memory. (True)练习四:完形填空1. 阅读下面的短文,从选项中选择最合适的词填入空白处。
- When I was a child, I __always__ (often/always) dreamed of becoming a scientist.2. 根据上下文和语法结构,选择正确的选项。
外研版(三起)五年级英语上册第二模块测试题及说课讲解
外研版 ( 三起 ) 五年级英语上册第二模块测试题及答案Module 2Unit 1同步练习 ( 五年级 )一、单项选择( 15)() 1 Will you help_____ ? A he B him C his() 2 How many _____ do you want ? A apple B apples C an apple() 3 How _____milk do you want ? A many B much C few() 4 How much is it going _____ ? A to cost B cost C costs() 5 How many things are there _____ the list ? A in B at C on() 6 I want to buy a _____ . A hamburger B cheese C hamburgers() 7 What about a _____ ? A dog B apple C oranges() 8 His birthday is on Sunday . I want to buy _____a present . A her B him C he() 9 Let’s go to the _____. We need food for our picnic .A supermarket B hospital C cinema() 10Amy and Sam like _____. A banana B bananas C cat() 11Here _____ your oranges . A isB am C are() 12Hello. How _____ oranges do you want ? A many B long C much() 13What about some pears ?_____. A Yes, I do . B Yes, I like pears. C Yes, it is .() 14Do you like _____, Lingling ? A cheeses B cheese C chees() 15Let’s buy one kilo of ____. A noodle B noodles C the noodles二、连线( 9)1How much cheese do you want ? A They will cometomorrow.2How many things are there ? B I’m shopping .3When will these things come ? C Half a kilo.4What are you doing ? D Thirty-seven.1 How much do you need ?A让我们列个清单吧!2Let ’s make a list.B你想要多少果汁?3How much juice do you want ?C让我们去购物吧!4Let ’s go shopping.D你能看见多少只鸭子?5 How many ducks can you see ?E你需要多少?三、选词填空( 5)for to at of in1They are ________________ school. 2 Do you live ______________ China ?3We need some food _____________our picnic . 4 I want half a kilo _____________noodles .5Let’s go ____________ the supermarket.四、补全对话( 16)A:Let ’s go to the ____________________, Lingling. We need food for ourpicnic. Can you read the shopping ________________to me , please?B:The first thing is bananas. How _________________ do you want ?A:Six , please. Amy and Sam like bananas. Do you like _______________________?B:Yes , I do .A:Good. What’s ____________________ ?B:_______________________. I can see the cheese . How ___________________cheese do you want ? A:Half a __________________. Do you like cheese , Lingling ?B:Great !五、选词填空( 5)1 How ______________( much / many ) bananas do you want ?2 Here’re ___________________( you / your ) pears.3 Can you ___________________( need / read ) the list for the old man ?4 Amy and Linda ____________________( like / likes ) milk. 5.(Do/Are ) you like bananas?Module 2Unit 2 同步练习 ( 五年级 )一、选择 (10)() 1 There are ____ books on the desk . A many B much C any() 2 Do you have bags ? No, I don’t. But I have six _____. A box B boxes C boxs() 3 ____ there much milk in the glass ? Yes, there is . A Is B Are C Am() 4 What are we going to take ____our picnic?. A in B on C at() 5 What about ____ ?A play football B playing football C play the football() 6 How much milk do you want ? ____ . A Six bottles , please . B Five apples . C Ten oranges . () 7How many apples do you want ? ____ . A Here you are . B Seven oranges . C One kilo , please. () 8Do you like cheese ? ____. A Five yuan, please. B No , I don’t. C Yes, I am .() 9Does John like bananas ? ____. A Yes , he does. B No , he is . C Yes , he doesn’t.() 10 What did you do yesterday ? ____. A I am doing my homework. B I played basketball . C I ama pupil.二、选词填空 (14)How much How many1_____________________ cakes do you want ?Five cakes, please.2_____________________ cheese do you want ? A kilo.3_____________________ books are there ? Twenty-eight.4_____________________ is it going to cost ?One hundred yuan .to for do next how many how much of on by an1____________________apples do you want ? Two kilo , please.2Let’s go _______________the supermarket.3_____________ you like bananas ?Yes , I do .4______________________ cheese do you want ?Half a kilo.5Did you have ______________ ice cream yesterday ?6What’s ________________ ? Cheese .7Did you go home _________________bus yesterday ?8We need food __________________our picnic .9What are you going to take __________________ our picnic ?10 Let’s buy one kilo ________________noodles .三、改错 (10)1Let buy one kilo of noodles .→2We need food to our picnic .→3 How many orange do you want ?→4Here’re you oranges .→5Do you like milks ?→四、连词成句 (10)1much do how need you_______________________________________________________________2are you what take going to___________________________________________________________3go home going to I am____________________________________________________________4us let make a list____________________________________________________________________5want I bottles five of milk _____________________________________________________________五、依据提示全句子(6)1 I ________________________(喜) noodles very much .2(我) make a list .3. Did Lily _____________________(落下,掉下 ) her ice cream yesterday ?Module 2Unit 1基础篇 ( 五年级 )一、( 10)1商场 __________________2需要 ____________3食品 ____________4 野餐 _____________5下一个____________6奶酪 _____________7 一半儿 ___________8公斤 _____________9果汁 ______________10盒子______________二、( 20)1去商场 _______________________2 物清 ______________________3多少(用于可数名)________________4多少(用于不行数名) ___________________5半公斤 ____________________6一公斤面条___________________7制作一个清 _________________________8⋯怎么_____________________三、( 10)() 1We need food ___ our picnic . A to B on C of D for() 2Can you read the shopping list ___ me ? A to B on C of D for() 3______ books do you want ? A How many B How much C how many D how much () 4Amy and Sam ____ bananas . A like B likes C liked D doesn’tlike() 5______ cheese do you want ? A How many B How much C how many D how much () 6Let’s buy one kilo ____ noodles . A to B on C of D for() 7What are we going to take ____ our picnic ? A to B on C of D for() 8Let’s ___ a list. A make B makes C making D made() 9How much do we need ? Six ____ . A box B boxes C boxs D boxing () 10 How much ____ do you want ? A books B apples C milk D oranges 四、用所的合适形式填空(10)1Do you _____________ ( like ) oranges ? Yes , I do .2How much cheese _____________( do ) you want ? One kilo, please .3We ________________ ( go ) to the park yesterday .4Look , they are _________________ ( play ) basketball .5Is she ___________________ ( listen ) to music ? Yes, she is .6I ___________________( buy ) a new book yesterday .7They ________________ ( go ) to school by bike yesterday .8My father __________________(come ) back last Sunday .9Does your grandma _________________( live ) in London ? No , she doesn’t.10 Yesterday, I ___________________( have ) an ice cream .五、成句( 10 )1 oranges you how many do want________________________________________________________2 like you do apples_____________________________________________________________________4仅供学习与交流,若有侵权请联系网站删除感谢4 can I the see cheese__________________________________________________________________5 are back China you from_______________________________________________________________六、句型变换( 10)1 Did you go to work yesterday ?(做出一定回答)__________________________________________________________2 They went home by bus yesterday .(对划线部分发问)_____________________________________________________3 How many apples do you want ?(用 two kilos 做回答)____________________________________________________4 Do you like noodles ?(做出否定回答)__________________________________________________________________5 They arewatching TV .(对划线部分提问)_______________________________________________________________七、名词变复数( 30)1 box __________2 bus _________3 watch __________4 brush __________5 orange __________6 page ____________7 hero_________ 8 kilo _________ 9 tomato ________10 hippo(河马 ) ________11 baby ________12 family _______13 key _______ 14 boy _______ 15 zoo _______ 16 radio ________ 17 leaf ________ 18 knife_________19 man ______20 woman ________21 sheep ________22 tooth ________23 foot _______ 24 mouse _________ 25 ox公 (牛)________26 child _________ 27 Chinese ____________ 28 Japanese ______________ 29 postcard____________30 hobby_______参照答案:Module2 Unit1同步练习:一、 BBBAC AABAB CABBB二、 1C 2D 3A 4B 1E 2A 3B 4C 5D三、 1at 2 in 3 for 4 of 5 to四、supermarket ,list,many, bananas,next, cheese,kilo五.、 many,your,read,like,DoModule2 Unit2同步练习:一、 ABABB ACBAB 二、much.many,2.to,3Do,4.How much,5.an,6.next,7.by,8.for,9.on, 10.of 三、milk 四、 1.How much do you need?2.What are you going to take? 3.I am going to go home. 4. Let us make a list.5.I want five bottles of milk. 五、Module2 Unit1 基础篇:一、二、 1.go to the supermarket 2.the shopping list 3.how many 4.how much 5.half a kilo6.a kilo of noodles 7.make a list 8. What about....?三、 DAAAB CB ABC 四、 1.like 2.do 3.went 4.playing5.listening6.bought7. Went8.Came 9.live 10.had 五、 1.How many oranges do you want? 2.Do you like apples? 3.I saw a bus yesterday.4, I can see the cheese.5.You are back from China六、. 1.Yes,I did.2.How did they gohome yesterday?3.Two kilos of apples 4.No,I don`t. 5.What are they doing?七、 boxes,buses,watches,brushes,oranges,pages,heroes, kilos,tomatoes,hippos,babies,families,keys,boys,zoos,radios, leaves,knives,men,women,sheep,teeth,feet,mice, oxen,children,Chinese, Japanese, postcards,hobbies.。
新牛津高中英语模块二第一单元 Tales of the unexplained 知识点整理及单元练习(含答案)
新牛津高中英语模块二第一单元知识点整理及单元练习M2Unit One一、词汇大集合I. 单词1. tale故事,传说2. unexplained 无法解释的,神秘的3. puzzled 困惑的,茫然的4. search 搜索,搜寻,搜查5. sighting 目击,目睹6. puzzling 令人困惑不解的7. alien 外星人的,外星人8. witness 目击者,证人,目击,见证9. multi-coloured 色彩繁多的10. white-skinned 白皮肤的11. strange-looking 怪模怪样的12. creature 动物,人13. UFO (Unidentified Flying Object) 不明飞行物14. research 研究15. nightmare 恶魔,梦魔,可怕的事物16. frightening 令人恐惧的17. possibility 可能性18. case 案子,案件19. murder 谋杀,凶杀20. convincing 令人信服的21. evidence 证据22. outer 外部的,外面的23. progress 进展,进步24. disappointed 感到失望的25. Yeti (Abominable Snowman) 雪人,野人26. monster 怪物,怪兽27. treasure 财宝,财富28. lately 最近,近来29. website网站30. mysterious 神秘的31. wild 野生的,野性的32. man-like 样子像人的33. similar 相似的,内似的34. hairy 多毛的,毛茸茸的35. villager 村民36. mountain climber 登山者37. thick 浓密的,厚的38. fur 皮毛,毛皮39. shoulder 肩膀40. national 国家的41. strength 力气,力量42. footprint 脚印43. state 州,国家,状态44. support 支持,支撑,搀扶45. existence存在46. inch 英寸(长度单位)47. exist 存在48. possibly可能49. mystery 神秘,神秘的事物II. 短语1. due to 由于,因为2. step up 加紧,加强,促进3. according to 根据4. show up 出现,露面5. full moon 满月6. rule out 排除7. outer space 外层空间,太空8. look into 调查,检查9. make up 编造,捏造,杜撰10. take charge of 负责,接管11. on average 平均12. run after 追赶13. ic strip 连环漫画14. believe in 信任15. run into 遭遇,陷入;撞上,撞到16. some day (将来)某一天17. space shuttle 航天飞机18. search for sb/sth 搜寻19. make progress 取得进步20. solar system 太阳系21. in advance 提前22. do research on 做研究23. happen to 发生于;偶然发生24. begin/start with so far 以...开始25. carry out 执行;实施26. separate from分离;把…和…分开27. pick up 捡起;获得;收拾28. take off起飞;脱下;离开29. protect sth from 保护...免受30. be connected to与…有联系,与…有关联;与…连接31. be divided into被分成32. point out 指出33. stand for 代表34. in return 作为回报35. intend to do sth 打算做36. draw a conclusion 得出结论37. at/with amazing speed 以惊人的速度38. be/bee convinced相信;确信;39. be disappointed with 对...失望二、句型大集合1. Police in America have stepped up their research for a fifteen-year-old boy who went missing two days ago in Dover, New Hampshire. 美国警方现已加紧对一名15岁失踪男孩的搜索,该男孩于两天前在新罕布什尔州的多佛市失踪。
模块2 中学课程 附答案(完整)
模块二中学课程一、单项选择题1.认为课程是教学内容的系统组成,并最早提出“课程”概念的教育家是()A杜威B维果斯基C斯宾塞D夸美纽斯2.下列不属于制约学校课程因素的一项是()A教育专家B社会C知识D儿童3.主张课程内容的组织以儿童为中心,提倡“做中学”的课程理论是()A学科课程论B活动课程论C社会课程论D要素课程论4.认为知识是课程的核心,学校课程应以学科分类为基础的课程理论是()A学科课程论B活动课程论C社会课程论D要素课程论5.主张根据社会需要确定教育目的和课程活动,重视道德教育和社会权威作用的课程理论是()A学科课程论B活动课程论C社会课程论D要素课程论6.活动中心课程论的奠基者是()A杜威B布鲁纳C斯宾塞D赞克夫7.下列不属于学科中心课程论代表人物的是()A杜威B布鲁纳C瓦·根舍因D赞克夫8.将课程分为分科课程、综合课程和活动课程的依据是()A课程内容的组织方式B课程计划对课程实施的要求C课程管理主体D课程呈现方式9.强调不同学科之间的关联性、统一性和内在联系的课程类型属于()A分科课程B综合课程C活动课程D隐性课程10.多学科并列编制,有较强的逻辑体系,注重知识传授的课程种类属于()A分科课程B综合课程C活动课程D隐性课程11.以儿童经验为基础,以各种形式系列活动为载体进行的课程种类属于()A分科课程B综合课程C活动课程D隐性课程12.展示学校办学宗旨和特色的课程是()A国家课程B地方课程C校本课程D学科课程13.主导价值在于通过课程体现国家的教育意志,确保所有公民的共同基本素质的课程是()A国家课程B地方课程C校本课程D学科课程14.区分显性课程和隐性课程的主要标志为是否具有()A 多样性B计划性C目的性D功效性15.从课程论视角来看,教室座位安排、图书角布置等属于()A 隐性课程B显性课程C活动课程D综合课程16.最早提出“隐性课程”这一概念的教育家是()A杰克逊B布鲁纳C斯宾塞D赞克夫17.指导整个课程编制过程的最为关键的准则是()A课程内容B课程目标C课程标准D课程评价18.学校组织教育和教学工作的重要依据是( )。
模块二回馈练习
模块二回馈练习选择题1体育与健康课程学习的目标是:()。
(多选)正确答案:ACDEF∙ A.掌握体育与健康的基础知识、基本技能与方法∙ B.掌握基本运动技术∙ C.增强体能∙ D.形成建康的生活方式和积极进取、乐观开朗的人生态度∙ E.体验运动的乐趣和成功,形成体育锻炼的意识与习惯∙ F.具有良好的心理品质、合作精神和交往能力2《标准》的一个显著特点是按什么陈述内容目标?(单选) (A) (1分)正确答案:A∙ A.学习水平∙ B.学习内容∙ C.学习时间3《标准》把体育与健康课程的学习内容划分为哪些方面?(多选) (ABCD) (1分) (最少选1项,最多选4项) 正确答案:ABCD∙ A.运动参与∙ B.运动技能∙ C.身体健康∙ D.心理健康与社会适应4九年义务教育阶段体育与健康课程内容分为几级水平(单选) (B) (1分)正确答案:B∙ A.3∙ B.4∙ C.55体育与健康课程学习的首要目标是()。
(多选) (ACDEF) (1分) (最少选1项,最多选6项)正确答案:ACDEF∙ A.掌握体育与健康的基础知识、基本技能与方法∙ B.掌握基本的运动技术∙ C.增强体能∙ D.形成建康的生活方式和积极进取、乐观开朗的人生态度∙ E.体验运动的乐趣和成功,形成体育锻炼的意识与习惯∙ F.具有良好的心理品质、合作精神和交往能力6《标准》的一个显著特点是按什么陈述内容目标?(单选) (A) (1分)正确答案:A∙ A.学习水平∙ B.学习内容∙ C.学习时间7下列那几项不属于基本运动能力?(多选) (CE) (1分) (最少选1项,最多选5项)正确答案:CE∙ A.跑、跳∙ B.攀、爬∙ C.运球、投篮∙ D.滚动、悬垂∙ E.射门、传球8指出《标准》所列课程内容中哪一项不是对基本运动能力的规定?(单选) (B) (1分)正确答案:B∙ A.做出正确的身体基本活动动作。
如做出各种形式的跑、跳、投、抛、攀、爬、钻、滚动、悬垂和支撑等动作∙ B.学习常见的球类游戏和基本技术。
第二模块答案提示00
第二模块答案提示00第二模块群体交流综合练习题答案提示一、名词解释1.可控变量:是指那些可以改变以使之适应于改进群体的生产率和成员满意度的因素。
2.不可控变量:是指群体被指定承担某项任务,个人对他们可能与谁一起工作,自己执行怎样的任务,以及活动的环境等无法选择和控制。
3.隐密议程:在群体交流中,大多数人的参与所带着的不同于群体目标的个人目标。
4.电话会议:小组之间通过电话进行的跨地区交流。
5.电视会议:通过图像传播进行跨地区的群体之间交流。
二、问答题1.为什么需要群体交流(工作)?提示:(1)有需要分工协作的工作; (2) 有需要手工而不是智力技能的工作;(3) 有需要创造性的工作; (4)有需要凭记忆和过去信息完成的工作。
2.请说明群体(交流)的优点与不足。
提示:优点:①群体可以作出更多的承诺;②有利于更好的决策;③有更多可利用的信息;④有更多更好的建议;⑤可以做更大胆的决策;⑥有更高的效率。
不足:①容易造成时间的浪费;②由于从众心理,容易作出乎庸的决策;③群体讨论的多,付诸行动的少。
3.影响群体效率的因素有哪些?如何影响?提示:(1)凝聚力。
凝聚力的大小将对每个成员是否遵守群体决定产生直接的影响。
(2)群体生产率和群体成员的满意程度。
主要取决于两个变量,即:可控变量和不可控变量。
①不可控变量包括:群体规模、环境因素和任务因素;②可控变量包括:领导风格和群体的相互影响与角色,4.随群体规模的扩大、人数的增多,可能会产生哪些后果?提示:(1)在群体中有突出贡献者与群体中的其他人的鸿沟加大 (2)群体领导者不得不进行更多的协调活动;(3)完成任务花费的时间减少; (4)群体可能对小问题降低了敏感性;(5)采取一致同意的决议减少,独裁式的决断增加;5.安排会议应做哪些准备工作?提示: (1)选择与会者都能出席会议的时间; (2)选择合适的会议地点; (3)收集和准备必要的会议资料;(4)起草会议日程; (5)邀请与会者,并给出具体的到会路线。
练习题、基础知识模块2
基础知识、模块二一、单选:1、我国消防工作是一项由政府统一领导、部门依法监管、单位全面负责、公民积极参与、专业队伍与()协同,群防群治的预防和减少火灾危害,开展应急救援的公共消防安全的专门性工作。
A企业专职队伍B义务消防队C社会各方面D其它力量答案及解析:C。
基础知识课本P019,消防工作的性质。
2、消防工作的中心任务是()。
A救人第一B防范火灾发生C减少财产损失D灭火力量的建设答案及解析:B。
基础知识课本P020,消防工作的任务。
3、下列不属于做好灭火及综合性救援工作是()A建立灭火应急救援指挥系统。
B制定灭火应急处置预案。
C加强灾害事故预警监测。
D火灾事故调查与统计。
答案及解析:D。
基础知识课本P023,做好灭火及综合性救援工作。
4、消防工作贯彻“预防为主,()”的方针。
A灭火为辅B救人优先C防消结合D宣传为辅答案及解析:C。
基础知识课本P024,消防工作的方针。
5、国务院领导全国的消防工作A国务院B中央军委C人民代表大会D各级政府答案及解析:A。
基础知识课本P025,政府统一领导。
6、()以上地方人民政府应急管理部门对本行政区域内的消防工作实施监督管理。
A省级B自治区级C市级D县级答案及解析:D。
基础知识课本P026,政府统一领导。
7、设有消防控制室的,实行()小时值班室度,每班不少于()人,并持证上岗。
A8、1 B8、2 C24、2 D12、2答案及解析:C。
基础知识课本P030,单位全面负责。
8、下列不是机关、团体、企业、事业等单位应当履行的消防安全职责()A明确各级、各岗位消防安全责任人及其职责,制定本单位的消防安全制度、消防安全操作规程、灭火和应急疏散预案。
定期组织开展灭火和应急疏散演练,进行消防工作检查考核,保证各项规章制度落实。
B建立消防档案,确定消防安全重点部位,设置防火标志,实行严格管理。
C定期开展防火检查、巡查,及时消除火灾隐患。
D根据需要建立专职或志愿消防队、微型消防站,加强队伍建设,定期组织训练演练,加强消防装备配备和灭火药剂储备,建立与国家综性消防救援队联勤联动机制,提高扑救初起火灾能力。
2021新教材人教版高中数学A版必修第二册模块练习题--7.2.2 复数的乘、除运算
7.2.2复数的乘、除运算基础过关练题组一复数的乘、除运算1.若复数z1=1+i,z2=3-i,则z1·z2等于()A.4+2iB.2+iC.2+2iD.3+i2.(2020山东滕州一中高一检测)已知复数z=1-ii(i为虚数单位),则复数z 的虚部是()A.1B.-1C.iD.-i3.已知a+2ii=b+i(a,b∈R),其中i为虚数单位,则a+b等于()A.-1B.1C.2D.34.若z是复数,且(3+z)i=1(i为虚数单位),则z为()A.-3+iB.3+iC.-3-iD.3-i5.已知i为虚数单位,则复数i2-i的模等于()A.√5B.√3C.√33D.√556.(2020湖北名师联盟高二期末)已知i是虚数单位,复数a+2i2-i为纯虚数,则实数a的值为()A.1B.-1C.12D.27.(2020河北辛集中学高二月考)已知(a+i)(1+bi)=1+3i,其中a,b均为实数,i为虚数单位,则|a+bi|=()A.√5B.2√5C.5D.28.(2020天津高一期末)已知i是虚数单位,z1=3-i1-i.若复数z2的虚部为2,且z1z2的虚部为0,求z2.深度解析题组二复数范围内实系数一元二次方程根的问题9.若1+3i是方程x2+bx+c=0(b,c∈R)的一个根,则方程的另一个根为()A.3+iB.1-3iC.3-iD.-1+3i10.(2019上海曹杨二中高二期末)若1+2i是关于x的实系数一元二次方程x2+bx+c=0的一个根,则()A.b=2,c=5B.b=-2,c=5C.b=-2,c=-5D.b=2,c=-111.(多选)(2019上海交大附中高二期末)下列关于一元二次方程ax2+bx+c=0(其中a,b,c∈R,a≠0)的说法正确的是()A.两根x1,x2满足x1+x2=-ba ,x1x2=caB.两根x1,x2满足|x1-x2|=√(x1-x2)2C.若判别式Δ=b2-4ac≠0,则该方程有两个相异的根D.若判别式Δ=b2-4ac=0,则该方程有两个相等的实数根12.在复数范围内解下列方程.(1)x2+5=0;(2)3x2+2x+1=0;(3)x2+4x+6=0.13.(2020江苏南京秦淮中学高二期末)已知复数+(a2-3)i,z2=2+(3a+1)i(a∈R,i是虚数单位).z1=3a+2(1)若复数z1-z2在复平面内对应的点落在第一象限,求实数a的取值范围;(2)若虚数z1是实系数一元二次方程x2-6x+m=0的根,求实数m的值.能力提升练题组一 复数运算的综合应用 1.(2020东北三省三校高三联考,)设复数z 满足z -ii=z-2i(i 为虚数单位),则z=( )A.12-32i B.12+32i C.-12-32i D.-12+32i2.()复数z=1-i1+i,则ω=z 2+z 4+z 6+z 8+z 10的值为( )A.1 B .-1 C.i D.-i 3.(多选)()对任意z 1,z 2,z ∈C,下列结论成立的是( )A.当m,n ∈N *时,有z m z n =z m+nB.z 1z 2=z 1·z 2C.互为共轭复数的两个复数的模相等,且|z |2=|z|2=z ·zD.z 1=z 2的充要条件是|z 1|=|z 2| 4.()若一个复数的实部与虚部互为相反数,则称此复数为“理想复数”.已知z=a 1-2i+bi(a,b ∈R)为“理想复数”,则( )A.a-5b=0B.3a-5b=0C.a+5b=0D.3a+5b=0 5.(2020天津一中高二期末,)已知复数z=a -i 2+i(i 为虚数单位,a 为实数)为纯虚数,则|a+2i|= . 6.()设z 的共轭复数是z ,若z+z =4,z ·z =8,则zz 等于 .7.(2020北京大兴高一期末,)已知复数z=(m 2-m)+(m+3)i(m ∈R)在复平面内对应点Z. (1)若m=2,求z ·z ;(2)若点Z在直线y=x上,求m的值.8.(2020北京通州高一期末,)已知复数z=1-i(i是虚数单位).(1)求z2-z;.(2)如图,复数z1,z2在复平面内对应的点分别为A,B,求z1+z2z题组二复数范围内方程根的问题9.(2019河南南阳高三期中,)已知1+i是关于x的方程ax2+bx+2=0(a,b∈R)的一个根,则a+b=()A.-1B.1C.-3D.310.(2019上海吴淞中学高二期中,)在复数范围内分解因x2+x-3=.式:-1211.()关于复数z的方程|z|+2z=13+6i的解是.12.()已知关于x的方程x2-(6+i)x+9+ai=0(a∈R)有实数根b.(1)求实数a,b的值;(2)若复数z满足|z-b|=1,求z为何值时,|z|有最小值,并求出|z|的最小值.深度解析答案全解全析 基础过关练1.A z 1=1+i,z 2=3-i,所以z 1·z 2=(1+i)·(3-i)=3-i 2+2i=4+2i. 2.B ∵z=1-i i =i+1-1=-1-i, ∴复数z 的虚部是-1. 3.B ∵a+2ii =b+i,∴a+2i=-1+bi, ∴a=-1,b=2.∴a+b=1. 4.C 由(3+z)i=1,得3+z=1i=-i, 所以z=-3-i. 5.D因为i 2-i =i(2+i)(2-i)(2+i)=i(2+i)5=-15+25i,所以|i 2-i |=|-15+25i|=√(-15)2+(25)2=√55,故选D.6.A ∵a+2i 2-i =(a+2i)(2+i)(2-i)(2+i)=2a -2+(a+4)i 5=2a -25+a+45i 为纯虚数,∴{2a -25=0,a+45≠0,解得a=1.7.A 因为(a+i)(1+bi)=1+3i, 所以(a-b)+(1+ab)i=1+3i, 即{a -b =1,1+ab =3,解得{a =-1,b =-2或{a =2,b =1.当a=-1,b=-2时,|a+bi|=|-1-2i|=√(-1)2+(-2)2=√5; 当a=2,b=1时,|a+bi|=|2+i|=√22+12=√5. 综上,|a+bi|=√5.故选A. 8.解析 z 1=3-i 1-i =(3-i)(1+i)(1-i)(1+i)=4+2i2=2+i, 设z 2=a+2i(a ∈R),则z 1z 2=(2+i)(a+2i)=(2a-2)+(a+4)i, 因为z 1z 2的虚部为0, 所以a+4=0,即a=-4. 所以z 2=-4+2i.方法技巧复数的乘法与多项式的乘法类似,但要注意i 2=-1,复数的除法运算中,除数为虚数时,应利用分母实数化,将除法转化为乘法,体现了转化思想.9.B 根据复数范围内实系数一元二次方程的求根公式,知两个虚数根互为共轭复数,所以另一个根为1-3i.10.B 由题意可知,关于x 的实系数一元二次方程x 2+bx+c=0的两个根分别为1+2i 和1-2i,由根与系数的关系,得 {(1+2i)+(1-2i)=-b,(1+2i)·(1-2i)=c,解得{b =-2,c =5. 故选B.11.ACD 由一元二次方程根与系数的关系,可得x 1+x 2=-ba ,x 1x 2=ca ,当x 1,x 2是复数时,此关系式仍然成立,故A 正确;当x 1,x 2为虚根时,|x 1-x 2|≠√(x 1-x 2)2,故B 错误;当判别式Δ=b 2-4ac>0时,该方程有两个相异的实数根,当判别式Δ=b 2-4ac<0时,该方程有两个虚数根,且它们互为共轭复数,故C 正确;若判别式Δ=b 2-4ac=0,则方程有两个相等的实数根,D 正确. 12.解析 (1)因为x 2+5=0, 所以x 2=-5,又因为(√5i)2=(-√5i)2=-5, 所以x=±√5i,所以方程x 2+5=0的根为x=±√5i. (2)因为Δ=4-4×3×1=-8<0, 所以方程3x 2+2x+1=0的根为x=-2±√8i 2×3=-13±√23i. (3)解法一:由x 2+4x+6=0,知Δ=42-4×1×6=-8<0, 所以方程x 2+4x+6=0的根为x=-4±√8i2×1,即x=-2±√2i.解法二:因为x 2+4x+6=0, 所以(x+2)2=-2, 因为(√2i)2=(-√2i)2=-2, 所以x+2=√2i 或x+2=-√2i, 即x=-2+√2i 或x=-2-√2i,所以方程x 2+4x+6=0的根为x=-2±√2i.13.解析 (1)由条件得,z 1-z 2=(3a+2-2)+(a 2-3a-4)i. 因为z 1-z 2在复平面内对应的点落在第一象限,所以{3a+2-2>0,a 2-3a -4>0,所以{-2<a <-12,a <-1或a >4,解得-2<a<-1.所以a 的取值范围是{a|-2<a<-1}.(2)因为虚数z 1是实系数一元二次方程x 2-6x+m=0的根, 所以z 1+z 1=6a+2=6,即a=-1, 所以z 1=3-2i,z 1=3+2i, 所以m=z 1·z 1=13.能力提升练1.B z=2+i 1-i =(2+i)(1+i)2=1+3i 2=12+32i. 2.B z=1-i 1+i =-i(1+i)1+i=-i,z 2=(-i)2=-1, 所以ω=-1+1-1+1-1=-1.3.ABC 由复数乘法的运算律知A 正确;设z 1=a+bi,z 2=c+di(a,b,c,d ∈R),则z 1=a-bi,z 2=c-di,所以z 1z 2=(a+bi)(c+di)=(ac-bd)+(ad+bc)i,z 1·z 2=(a-bi)(c-di)=(ac-bd)-(ad+bc)i,所以z 1z 2=(ac-bd)-(ad+bc)i=z 1·z 2,故B 正确;由复数的模及共轭复数的概念知C 正确;由z 1=z 2能推出|z 1|=|z 2|,但由|z 1|=|z 2|推不出z 1=z 2,因此|z 1|=|z 2|是z 1=z 2的必要不充分条件,D 错误.4.D z=a 1-2i +bi=a(1+2i)(1-2i)(1+2i)+bi=a 5+(2a5+b)i. 由题意知,a 5=-2a5-b,则3a+5b=0. 5.答案√172解析 因为z=a -i2+i =(a -i)·(2-i)(2+i)·(2-i)=2a -1-(a+2)i5为纯虚数,所以a=12,所以|a+2i|=|12+2i|=√172,故答案为√172.6.答案 ±i解析 设z=a+bi(a,b ∈R),则z =a-bi, 由z+z =4,z ·z =8,得{2a =4,a 2+b 2=8,∴{a =2,b =±2.∴z=2+2i,z =2-2i 或z=2-2i,z =2+2i, ∴z z =2-2i2+2i =-i 或z z =2+2i2-2i =i,即zz =±i. 7.解析 (1)因为m=2, 所以z=2+5i,z =2-5i, 所以z ·z =(2+5i)(2-5i)=29.(2)复数z=(m 2-m)+(m+3)i(m ∈R).在复平面内对应的点为Z(m 2-m,m+3). 因为点Z 在直线y=x 上, 所以m 2-m=m+3, 所以m=-1或m=3. 8.解析 (1)∵z=1-i,∴z 2-z=(1-i)2-(1-i)=1-2i+i 2-1+i =-1-i.(2)由题图得,z 1=2i,z 2=2+i, ∴z 1+z 2z =2i+2+i 1-i =2+3i 1-i =(2+3i)(1+i)(1-i)(1+i) =-12+52i.9.A 当a=0时,解得b ∉R,不符合题意,所以原方程为一元二次方程.因为实系数一元二次方程的虚根互为共轭复数,所以方程的另一个根为1-i, 根据根与系数的关系,可得{(1+i)+(1-i)=-ba ,(1+i)(1-i)=2a ,解得{a =1,b =-2. 所以a+b=-1.10.答案 -12(x-1+√5i)(x-1-√5i)解析 将-12x 2+x-3=0化简并整理,得x 2-2x+6=0,Δ=(-2)2-4×1×6=-20<0,则x=2±√20i 2=1±√5i,所以-12x 2+x-3=-12(x-1+√5i)(x-1-√5i). 11.答案 z=4+3i 解析 设z=x+yi(x,y ∈R),则有√x 2+y 2+2x+2yi=13+6i,于是{√x2+y 2+2x =13,2y =6,解得{x =4,y =3或{x =403,y =3.因为13-2x=√x 2+y 2≥0,所以x ≤132,故x=403舍去,故z=4+3i.12.解析 (1)因为b 是方程x 2-(6+i)x+9+ai=0(a ∈R)的实数根,所以(b 2-6b+9)+(a-b)i=0,故{b 2-6b +9=0,a =b,解得a=b=3. (2)由(1)得,b=3,所以|z-b|=1即为|z-3|=1,设z=m+ni(m,n ∈R),则z 在复平面内对应的点Z 的坐标为(m,n),|z-3|=1可以看成是点Z(m,n)到点(3,0)的距离为1,则点Z(m,n)是以(3,0)为圆心,1为半径的圆,如图所示.由图可知,当z=2时,|z|的最小值为2.深度剖析一元二次方程az 2+bz+c=0(a ≠0)的系数为虚数时,仍然可以用求根公式z=-b±√Δ2a 求出方程的根,但是不能用“根的判别式”判别方程有无实数根,也可以设方程的根为z=x+yi(x,y ∈R),利用待定系数法将z=x+yi 代入原方程,利用复数相等的充要条件,得出关于x,y 的方程(组),从而求出x,y 的值,进而得出方程的根.。
沪教牛津版六年级英语下册第二单元测试题及答案
沪教牛津版六年级英语下册第二单元测试题及答案(含本单知识小结)Module Work and play满分: 100分时间: 60分钟得分:听力部分一、听录音,选出你所听到的单词。
(10分)()1. A. when B. who C. what()2. A. hear B. near C. wear()3. A. deer B. cheer C. where()4. A. here B. hair C. pair()5. A. wind B. we C. whose二、听录音,选答语。
(10分)()1. A. The painting. B. The red one. C. The book.()2. A. Yes, he does.B. He likes the idea.C. Because the painting looks powerful.()3. A. It’s colourful. B. For my brother. C. A toy plane.()4. A. They are in class.B. They need some presents.C. They are making a crown.()5. A. Thank you. B. In a school. C. OK.三、听录音,给下列图片排序。
(10分)()()()()()四、听录音,填空。
(10分)I want to learn Chinese ink painting. Look, this is my 1. . Where are my 2. ?They are onthe right of the desk. I can draw 3. . All my friends 4. my pictures. They say I will be an 5. . I am very happy.笔试部分五、根据括号内所给汉语提示,完成句子。
中职英语:英语2基础模块-培优讲练英语2Unit2Health and Fitnessl四课练习答案
Unit 2 第一课时针对训练一、单项选择1.They avoid _____ out alone after dark.A.goB.goingC.to goingD.to go2. It’ll take her some time to _____ from the illness.A.returnB.recoverC.backD.renew3. We’re looking for polite and patient people who can work _____ pressure.A.withB.inC.onD.under二、完成对话A: What's wrong?B: 1. ___________ My temperature is over 38℃.A: I see. How long have you been like this?B: 2. ___________A: I'm afraid you have a cold. Take this medicine one tablet three times a day.B: What else should I pay attention to?A: 3. ___________B: 4. ___________A: Well, it will take about one week.1._____2. _____3. _____4. _____5. _____三、词义配对1. terrible A.压力2. pressure B.咳嗽3. overweight C.恢复4. appointment D.预约5. afraid E.酸痛的6. temperature F.过度使用7. recover G.害怕的8. sore H.超重的9. overuse I.可怕的10. cough J.温度1 I will tell you the way of keeping healthy.2 eat healthily, I usually3 eating food high in fat, like French fries or cookies. I also eat little meat. I eat a lot of vegetables and fresh fruit which are full of vitamins. Taking4 every day helps us build a strong body.5 exercise is an important part of keeping me healthy.1._____2. _____3. _____4. _____5. _____Unit 2 第二课时针对训练一、单项选择1.I made a suggestion but they chose to _____ it.A.ignoreB.acceptC.receiveD.get2. -- She doesn’t play _____ her sister.-- Yes, you are right.A.as wellB.the sameC.as well asD./3. You should be ashamed of _____ your daughter like that.A.treatingB.to treatC.treatedD.treat4. We wash clothes with the _____.A.fridgeB.washing machineC.air-conditionerD.microwave5. There was a traffic jam. _____, he was late.A.As a resultB.As a result ofC.As the resultD.As result6. I don't think you should _____. You should eat more.A.lose fatB.put on weightC.put weightD.lose weight7. They _____ health problems, but they still don't want to do exercise.A.sufferB.suffer fromC.are fromD.suffers from8. We need _____ solutions, not short-term Band-Aid ones.A.big-termB.wide-termC.high-termD.long-term二、同义句改写1.It will take you about one week to recover from it.You will spend about one week _____ from it.2.We have no idea how to handle our situation.We _____ _____ _____ how to handle our situation.3.Doing exercise is necessary in our daily life._____ is necessary _____ do exercise in our daily life.三、完形填空Almost all people think exercising is good for us. But how often should we exercise? Five days a week? Four days a week? Is two days a week 1 ? Luckily, the answer 2 the question is not difficult to find.We asked Shawn Arent, a scientist, about this question. He said that people should 3 every day. It really does great help to our 4 and health.Shawn also told us 5 more interesting. “There is a big 6 between exercising two days a week and three days a week,”Shawn said. “With three days a week, your body gets enough exercise and you want to do 7 activities to be healthier. 8 , with two days a week, you don't get much change. You just don’t do it often enough, so you can’t fully 9 the fun of exercising.”“For children and old people, it’s a good start to exercise two days a 10 at first. But I still want them to exercise more after some time. Three to four days a week will be wonderful for them.” Shawn said.1.A.such B.enough C.full D.bored2.A.to B.in C.at D.on3.A.swing B.point C.exercise D.sleep4.A.result B.percent C.message D.body5.A.everything B.nothing C.something D.anything6.A.mind B.difference C.activity D.program7.A.much B.more C.little D.less8.A.However B.Hardly C.Ever D.Almost9.A.die B.lose C.decide D.enjoy10.A.week B.month C.year D.dayUnit 2 第三课时针对训练一、单项选择1._____ I have to walk all the way, I’ll get there.A.Even ifB. IfC. EvenD. Even though2. Most of the buildings visitors saw today, though, _____ the 18th century.A.back toB.date backC.date back toD.date to3. Who’s lighting the stove here? I can’t even _____ my eyes for the smoke.A.openB.closeC.shutD.see4. You should have a try _____ you don't know how to do it.A.thoughB.even thoughC.as thoughD.even5. These days he looks _____.A.healthB.healthyC.healthilyD.much health6. Put on more clothes, or you’ll _____ a cold.A.takeB.carryC.catchD.get7. It’s good for health to _____ after meals.A.have a walkB.a walkC.has a walkD.walking二、选词填空University kitchens serve many kinds of 1 . Some students 2 unhealthy food, because now their 3 are not nearby to help them choose. Some students visit the kitchen many times while studying. Late at night, some students get 4 fast food such as hamburgers. Students also have less time for walking, running and doing 5 because of their schoolwork.1._____2. _____3. _____4. _____5. _____三、阅读理解There are many ways to help improve your health like eating healthy food, taking exercise and getting medical help. But the easiest and cheapest way to improve your health is just to sleep eight hours or more every night. The general sleeping rule is that the younger you are, the longer sleep you need. But regardless of(不管) age, some people need to sleep more while for some a few hours is enough.The problem with sleep is that more and more people in the world are not sleeping enough. According to the World Health Organization, over half the people in the world may be sleep-deprived. Having less sleep not only makes people feel tired but also causes accidents.How do we teach people to learn the value of sleep? Perhaps they may listen to the advice of Dr. James Maas, an expert(专家) in sleep. He says, “Sleep is like a credit card. When you sleep less, you are only borrowing time. You always have to pay it back. The more hours you don’t sleep, the more hours you should sleep to ‘pay back’ the hours on your ‘sleep credit card’.”For those who value work more than sleep, they should listen to what a famous person once said, “Don’t think you will be doing less work because you sleep during the night. That is a foolish idea which is held by people who have no imagination. You will be able to do more.”1.According to the writer, the easiest and cheapest way to improve health is to ___________.A.eat healthy food every dayB.take exercise as much as possibleC.sleep eight hours or more every nightD.get medical help whenever necessary2. What does underlined word “sleep-deprived” mean in Paragraph 2?A.Having a good sleep.B.Having less sleep.C.Excited about sleep.D.Interested in sleep.3. According to Dr. James Maas, what is sleep like?A.A credit card.B.A report.C.An hour.D.A piece of paper.4. What do the words of the famous person mean in Paragraph 4?A.Sleeping during the night is foolish.B.Sleeping during the night is helpful.C.People have no courage.D.People always do less work.5. What is the best title of the passage?A.The Ways of Making MoneyB.The Value of StudyC.The Ways of Eating LessD.The Value of SleepUnit 2 第四课时针对训练一、单项选择1. There _____ a book and three pencils on the desk.A.beB.isC.areD.am2. He _____ worried just now.A.lookedB.looksC.lookD.looking3. _____ there a new bike in front of our classroom?A.IsB.AreC.DoD.Does4.I'm sorry to have kept you _____.A.waitB.to waitC.waitingD.waited5.She felt somebody _____ her.A.touchedB.touchesC.touchD.to touch6.I will make your dream _____.es trueB.to come trueing trulye true7.The teacher _____ John is a good student.A.believesB.knowsC.suggestsD.considers8.There _____ any books on your desk.A.aren’tB.isn’tC.don’tD.doesn’t9.—_____ apples are there on the table?—There are four.A.How muchB.How manyC.How largeD.How big10.—_____ milk is there in the bottle?—There is little.A.How manyB.How oldC.How farD.How much11._____ your father_____ a new car?A.Is; thereB.Are; thereC.Does; haveD.Do; has12._____ less milk in this bottle than in that one.A.There haveB.There hasC.There isD.There are13.—Again, my computer doesn't work.—_____ must be something wrong with the CPU.A.ThereB.ThatC.ItD.This二、书面表达1.请根据下列提示,以“Good Ways to Keep Healthy”为题,写一篇60词左右的短文,说说如何保持健康。
外研版英语八下_Module 2 模块基础练习题
外研版八年级英语下册模块基础练习题Module 2 ExperiencesUnit 1 I've also entered lots of speaking competitions.一. 根据汉语意思补全单词1. 梦;梦想dr _ _ m2. (使)参加;(使)报名ent _ _3. 奖品;奖项pr _ z _4. (有财力)买得起,付得起aff _ _ d5. 邀请inv _ t _6. 曾经;从来;在任何时候ev _ _7. 比赛;竞争c _ mp _ t _ t _ on二. 根据汉语意思写出下列短语1. 一等奖__________2. 编写;写作__________3. 编写;创作__________4. 演讲比赛__________三. 根据句意及课文内容完成句子1. _____ you _____ _____ any prizes before?你以前曾经得过奖吗?2. But I _____ _____ it. 但是我负担不起。
3. —I've _____ _____ now.我现在已经不再尝试了。
—That's _____ _____.真遗憾。
4. Have you ever _____ _____ other kinds of competitions?你曾经想过其他类型的比赛吗?5. ...I will _____ you _____ _____ with me.……我会邀请你和我一起来。
四. 阅读理解Earthquakes are hard to predict, but do you know what to do before, during and after an earthquake? Here’s some advice:Before an earthquakeIt’s necessary to prepare yourself and your family. All family members should know how to turn off gas, water and electricity and know useful telephone numbers (doctor, hospital, police, etc.).During an earthquakeIt’s important for each of you to stay calm. If you are indoors, quickly move to a safe place in the room such as under a strong table. The purpose is to protect yourself from objects. Stay away from windows, large mirrors, heavy furniture and so on. If you’re cooking, turn off the gas. If you’re outdoors, move to an open area like a playground. Move away from buildings, bridges and trees. If you are driving, stop the car as soon as possible, staying away from bridges and tall buildings. Stay in your car.After an earthquakeOnce the shaking has stopped, DO NOT run out of the building at once. It’s better to wait and leave when it’s safe. Check around you and help the people who are in trouble. If your building is badly broken, leave it. If you smell gas, get everyone outside and open windows and doors. If you can do it safely, turn off the gas. Report it to the gas company.1. Which of the following is mentioned in the second paragraph?A. People should know how to turn on gas.B. People should know how to save water.C. People shouldn’t put heavy boxes over beds.D. People shouldn’t forget the useful phone numbers.2. When an earthquake happens, can help you deal with it.A. standing stillB. staying calmC. looking outsideD. moving indoors3. During an earthquake, if you are driving in an open area, you should .A. speed up your carB. stop your car and stay inC. slow down your carD. stop your car and run out4. When the earth stops shaking, you should .A. check around you firstB. run out of the building at onceC. break the windows and doorsD. write a report to your company5. You can learn after reading the passage.A. what an earthquake is likeB. what to do to avoid an earthquakeC. how an earthquake happensD. how to protect yourself in an earthquake参考答案一. 1. dream 2. enter 3. prize 4. afford 5. invite 6. ever 7. competition二. 1. first prize 2. write about 3. make up 4. speaking competition三. 1. Have, ever won 2. can't afford 3. stopped trying; a pity 4. thought about 5. invite, to come四DBBADUnit 2 They have seen the Pyramids.一. 根据汉语意思补全单词1. 搬家;改变……的位置mo _ _2. 派遣去;命令……去s _ _ d3. 古老的;古代的anc _ _ _ t4. 相混合;融合m _ x5. 惦念;怀念;想念m _ ss二. 根据汉语意思写出下面短语1. 倒数;倒计时__________2. 目前,现在__________3. 遍及全世界__________4. 到目前为止__________5. 盼望做某事__________三. 根据句意及课文内容完成句子1. Mike Robinson is a _____ American boy...迈克•罗宾逊是一个15岁的美国男孩……2. ...it _____ _____ Peter _____ _____ in Germany, France and China before.……以前公司曾派彼得去德国、法国和中国工作过。
新标准英语五年级下学期第二模块2试题
五年级第二模块试题一.填空(10分)1.dance(名词)____2.drive(名词)_____3.learn(过去式)__________4.dance(过去式)__________5.wear(现在进行时)_____________二.选择(30分)1.Mr Li was a teacher, He _______Chinese.A.teach B. taught C. teached2.He walked _____school. A to B. to go C. by3.He`s ______English now . A. learn B. learnt C .learning4.Chen Hai is ____ English teacher. A. a B. an C. /5.--______don`t you go home?—Because I`m lost. A. WhereB . What C. Why6.--______he learn English? –Yes, he did. A. Do B. Does C. Did7.What did he do ______?A. yesterday B. now C. tomorrow8.My son will go to HangKong______. A. now B. tomorrow C. before9.Mr Smart is a ______. A. teach B. teaching C. teacher10.He _____to school by bus every day.A. go B. went C. goes三.连词成句(15分)1. he did what do ?2. hard He very studied3. teacher Tom an is English4. walked school to he5. Wind(风)Saw who the?四.左右找答案(16分)1.Who are they? A. It`s my father.2.Who`s this? B.Yes, it is.3.Why`s she wearing these clothes? C.I danced.4.Did he learn English? D.They are my teachers.5.Is this your mother? E.Yes, he did.6.Did she learn English? F.Yes, he was.7.What did you do ? G.No, she didn`t.8. Was he a teacher? H.Because she`s a dancer.五.完成句子(15分)1.六年前,你怎样去学校_________did you _________ __________ ____________six years ago.2.昨天晚上你和谁一起去的?_________ ________ _______go with last night?3.他现在正在学英语He ___________ ________ _________now.4.他们是我的老师。
《婴幼儿行为观察与指导》 试题 模块二 题库及答案
《婴幼儿行为观察与指导》章节练习题模块二一、判断题1.轶事记录法具有高结构、弹性化、详细化的特点。
()2.轶事记录法的描述要客观,不能带有评判性。
()3.日记描述法一般分为两种类型:主题日记描述法和综合日记描述法。
()4.事件取样法会受到观察时间和时间间隔的影响。
()5.事件取样法可以对行为的前因后果做详细记录。
()6.时间取样法的类型可以分为两类,一是规律性的时间取样,二是随机性的时间取样。
()7.等级评定量表法无法了解行为发生的具体情境、原因、经过和结果等细节。
()8.观察者想了解某些行为发生的程度、频率应该使用等级评定法。
()9.行为检核法可有效地促进课程计划的改进,帮助教师及时调整活动内容及材料。
()10.某项观察研究信度高的话,效度就一定高。
()二、单选题1.事件取样法的记录方式主要分为叙事描述记录和()oA.时间描述记录B.符号系统记录C.综合表述记录D.主题描述记录2.()是指运用写日记的方法,纵向对同一个或同一组婴幼儿的新行为或重要事件进行长期追踪观察与记录。
A.轶事记录法B.事件取样法C.时间取样法D.日记描述法3.只要明明小朋友出现打扰人的行为,陆老师就进行观察和详细的记录,这使用了()oA.轶事记录法B.时间取样法C.事件取样法D.日记记录法4.()是指观察者在对婴幼儿进行观察后,对其行为表现所达到的水平进行评定,并对其行为的质量高低进行量化判断的一种方法。
A.行为检核法B.等级评定量表法C.事件取样法D.时间取样法5.( )适用于观察较常出现或出现频率较高的外显行为,也可以用来观察一个或多个婴幼儿的行为表现。
B.行为检核法 B.等级评定量表法C.事件取样法D.时间取样法三、解答题1.简述轶事记录法所记录的轶事的类型?2.简述事件取样法的优缺点?3.日记描述法的实施步骤?(1)问题型轶事(2)发展型轶事(3)趣味型轶事2.(一)优点(1)事件取样法简便、实用,可以在有准备的情况下获取有代表性的样本。
- 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
自相关
1.对于经济时间序列,存在的自相关主要表现为正自相关,还是负自相关?为什么?
答:正自相关。
因为经济变量,特别是宏观经济变量具有惯性,所以自相关是正的,不可能是负的,震荡型的。
2.写出DW统计量的定义式。
答:DW =。
3.给出DW统计量的取值范围。
答:[0,4]
4.DW检验临界值的确定与几个因素有关?说出这些因素的名称
答:DW检验临界值与三个因素有关。
(1)检验水平 ,(2)样本容量T , (3)原回归模型中解释变量个数k(不包括常数项)。
5.如果随机误差项是完全非自相关的,用样本计算的DW统计量的值近似等于多少?
答:近似等于2。
6.存在自相关对模型回归参数OLS估计量带来什么影响?
答:回归参数的OLS估计量仍具有无偏性,但失去有效性。
7. 什么是自相关?
答:随机误差项前后期相关。
8. 克服自相关的方法是什么?试以一阶自回归为例加以说明。
答:广义最小二乘法,广义差分法。
多重共线性
1.不完全多重共线性条件下,对模型回归参数OLS估计量方差带来什么影响?答:随着多重共线性程度的增加,OLS估计量的方差逐渐增加。
2.简述判别多重共线性的方法?
答:(1)如果回归方程的拟合优度(确定系数)R2很高,而回归系数估计量的t统计量的
值却都很低(t检验通不过),即的估计方差,(j= 1, 2, …, k-1)都非常大,说明解释变量间存在严重的多重共线性。
(2)判定系数R2。
(3)逐步回归法。
(4)相关系数矩阵法。
3.以OLS估计式= (X 'X)-1X 'Y为基础说明当解释变量间存在完全多重
共线性时,对的计算将产生什么影响?当解释变量间存在不完全多重共线
性时,对的计算将产生什么影响?
答:(1)当解释变量间存在完全多重共线性时,(X'X)降秩,(X'X)-1不存在,所以无法
计算值。
(2)当解释变量间存在不完全多重共线性时,∣ X 'X∣接近于零,所以(X 'X)-1
中的元素值很大,即的方差、协方差很大。
4.什么是多重共线性?
答:解释变量之间相关。
5. 经初步分析,认为影响中国电信业务总量变化的主要因素有邮政业务总量(x1)、中国人口数(x2)、市镇人口占总人口的比重(x3)、人均GDP(x4)、全国居民人均消费水平(x5)。
所得1991-1999年数据见下表。
(1)试建立关于中国电信业务总量的五元线性回归模型。
(2)检验模型是否存在多重共线性。
(3)如果存在多重共线性,则对模型进行适当修正,给出一个比较合理的模型形式。
年电信业务总量
y(百亿元)邮政业务总量
x
1
(百亿元)
中国人口数
x
2
(亿人)
市镇人口比重
x
3
人均GDP
x
4
(千元)
人均消费水平
x
5
(千元)
1991 1.51630.527511.58230.2637 1.8790.896 1992 2.26570.636711.71710.2763 2.287 1.070 1993 3.82450.802611.85170.2814 2.939 1.331 1994 5.92300.958911.98500.2862 3.923 1.746 19958.7551 1.133412.11210.2904 4.854 2.236 199612.0875 1.332912.23890.2937 5.576 2.641 199712.6895 1.443412.36260.2992 6.053 2.834 199822.6494 1.662812.48100.3040 6.307 2.972 199931.3238 1.984412.59090.3089 6.534 3.143
资料来源:《中国统计年鉴》2000
随机解释变量
1.若模型中解释变量是随机的,随机误差项相互独立,回归参数的OLS估计
量是否具有无偏性?
答:回归参数的OLS估计量具有无偏性。
2.若模型中解释变量是随机的,随机误差项存在自相关,回归参数的OLS估
计量是否具有无偏性?
答:回归参数的OLS估计量不具有无偏性,也不具有一致性。
3.若模型中解释变量是随机的,且与误差项相关,回归参数的OLS估计量既
是有偏的,也是不一致的。
那么工具变量估计量是否具有无偏性和一致性?
答:回归参数的OLS估计量不具有无偏性,但具有一致性。
异方差
1. 说出异方差的3种常见形式。
答:(1)递增型异方差,(2)递减型异方差,(3)复杂型异方差。
2. 如果模型的随机误差项存在异方差,对回归参数的OLS 估计量会带来什么影响?
答:回归参数的OLS 估计量仍具有无偏性,但失去有效性。
3. 宏观经济变量中的异方差一般属于递增型异方差还是递减型异方差? 答:宏观经济变量中的异方差一般属于递增型异方差。
4. 给出两种检验异方差的常用方法。
答:(1)图示法,(2)Goldfeld-Quandt 检验。
5. 什么是异方差?
答:随机误差项的方差不是一个常数。
6. 克服异方差的方法是什么?如果22()i i Var X μσ=,叙述具体的做法。
答:广义最小二乘法,加权最小二乘法。
对原模型对应方程两边除以i X ,得到新的模型,
对新模型使用OLS 估计参数。
7. 取2001年中国31个省市自治区农作物种植业产值y t (百亿元)和总播种面积x t (百万公顷)数据(见下表)研究二者之间的关系。
得估计的线性模型如下,
资料来源:《中国统计年鉴》2002,中国统计出版社。
= 0.0962 + 0.9097 x t
(0.2)(9.4)R2 = 0.75, T = 31
(1) 画关于y t和x t的散点图。
(2) Goldfeld-Quandt方法检验模型误差项是否存在递增型异方差。
(3) 通过修正模型和对变量取对数两种方法克服异方差。