三年级英语试卷Unit 1 单元测试卷
Unit 1 Hello！
满分:100分时间:60分钟得分:
听力部分
一、听录音,排序。 (10分)
()()()()() 二、听录音,判断正()误(?)。 (10分)
()1.Hello, I’m Mike.()2.My name’s Chen Jie.
()3.Goodbye!()4.Open your book.
()5.I have a pencil.
三、听录音,选出图片。 (10分)
()1.A. B.
()2.A. B.
()3.A. B.
()4.A. B.
()5.A. B.
四、听录音,选句子。(10分)
()1.A.Open your pencil box. B.Open your book.
()2.A.Let’s play! B.Let’s go!
()3.A.I have an eraser. B.I have a crayon.
()4.A.My name’s Zip. B.My name’s Zoom.
()5.A.What’s your name? B.Who’s there?
笔试部分
五、抄写下列字母的大小写形式。(6分)
六、看一看,选一选。 (16分)
A B C D E F G H
1.pen
2.pencil
3.ruler
4.crayon
5.eraser
6.book
7.pencil box
8.bag
七、根据图片,选单词或词组。(10分)
()1. I have a .
A.book
B.bag
C.ruler
()2. I have a/an .
A.eraser
B.ruler
C.pencil box
()3. I have a .
A.crayon
B.pen
C.pencil
()4.I have a/an .
A.eraser
B.ruler
C.book
()5.I have a .
A.bag
B.crayon
C.pen
Chen Jie: I have a ruler.
Sarah: I have a bag.
Mike: I have a pen and an eraser.
John: I have a book and a bag.
九、从Ⅱ栏中给Ⅰ栏中的句子选择相应的答语。 (10分)
Ⅰ
()1.What’s your name?
()2.Hello! I’m Wu Yifan.
()3.Goodbye, class.
()4.Let’s play. OK?
()5.Are you John?
Ⅱ
A.Hi! I’m Sarah.
B.My name’s Chen Jie.
C.Bye, Miss White.
D.Yes, I am.
E.Great!
Rabbit: 1
Panda: Hi, Rabbit.
Rabbit: 2 That is Panda.
Monkey: 3
Panda: 4
Rabbit and Monkey: 5
Panda: OK!
参考答案
听力部分
一、听力材料
1.book
2.pen
3.eraser
4.bag
5.crayon
答案:45312
二、听力材料
1.Hello, I’m Mike.
2.I’m Chen Jie.
3.Bye!
4.Open your book.
5.I have a ruler.
答案: 1. 2.? 3.? 4. 5.?
三、听力材料
1.pencil
2.ruler
3.bag
4.book
5.pencil box
答案:1.B 2.A 3.B 4.B 5.A
四、听力材料
1.Open your book.
2.Let’s play!
3.I have a crayon.
4.My name’s Zip.
5.What’s your name?
答案:1.B 2.A 3.B 4.A 5.A
笔试部分
五、 Aa Dd Gg Ii Ll Qq
六、 1.F 2.D 3.G 4.H 5.C 6.B7.E8.A
七、 1.A 2.C 3.B 4.A 5.B
八、提示:陈杰:直尺萨拉:包
迈克:钢笔和橡皮约翰:书和包
九、 1.B 2.A 3.C 4.E 5.D
十、 1.A 2.C 3.E 4.D 5.B
苏教版英语九年级下册第一单元单元测试9B Unit1(C卷)含答案
苏教版英语九年级下册第一单元单元测试9B Unit1（C卷） 一、单项填空 1. He can hardly stay awake because he is so tired,________ ? A. does he B. isn’t he C. can’t he D. can he 2.When I was young，I _______ in the country. A. used to live B. was used to live C. used to living D. was used to living 3. Kunming is a beautiful city _______ the southwest of China. A. on B. in C. to D. at 4. Guilin is famous _______ its natural landscapes. A. for B. as C. with D. in 5. I hope _______ to my birthday party next Sunday. A. your come B. you to come C. you can come D. you came 6. I am writing to you _______ I’m afraid to talk about it face to face. A. because B. though C. until D. unless 7. She _______ down because she had a headache. A. lay B. lied C. lies D. lie 8. Tony gets up _______ early _______ he can be the first one to get to his classroom. A. so; that B. such; that C. too; to D. enough; to 9. There are _______ things in your room. Stop buying anything until you can clean up your room. A. so many B. less C. too much D. so much 10. You have to be _______ and wait until I finish my work. A. patient B. strict C. honest D. active 11. Now teenagers are very busy with their schoolwork and they have _______ time to do exercise. A. few B. little C. a few D. a little 12. Read it aloud _______ the class can hear you. A. so that B. if C. when D. although 13.—I really hope to keep in touch with Lily. —Sorry. I don’t know ________. A. what her name is B. what her job is C. what her number is D. when she left 14.Rick has learned a lot about Chinese culture________he came to China. A. before B. when C. until D. since 15. He _______ every Saturday morning _______ in an animal hospital. A. spends; working B. spends; to work C. pays; working D. pays; to work 二、完形填空 Have you ever been to Hong Kong? When you travel in Hong Kong, you must 1 of the traffic rules, because they are different from those of the interior （内地）of China, and the traffic keeps to 2 . Before 3 the street, you must look to the right and then to the left. If the traffic lights turn 4 , the traffic must stop, and people can cross the zebra line. If the traffic lights turn 5 , the traffic can go, but people 6 cross the road. In the morning and in the evening, when people go to or come from 7 , the streets are very busy. The traffic is 8 . When you go somewhere by bus in Hong Kong, you must be careful, 9 .Always remember the traffic keeps to the left. Have a look first, or you may go to the wrong way. In Hong Kong, there are a lot of big buses 10 two floors. You may sit on the second floor. From there you can watch the city very well.
人教版英语必修5 Unit 1 单元测试
Unit1Great scientists SectionⅠWarming Up,Pre-reading,Reading& Comprehending 课后篇巩固提升 一、用括号内所给单词的适当形式填空 1.—We have drawn a (conclude). —What’s it? —It is Tom rather than David who made a serious mistake. 2.I was so (absorb) in the book that I didn’t hear you come in. 3.—Mary,don’t always keep yourself (expose) to the sun.It’s bad for your skin. — Thank you. 4.Do you know how to prove a new idea in (science) research? 5.She found her new job very (challenge) when she came to the new company. 6.It is (announce) that the river has been polluted seriously. 7.Neither the passengers nor the driver (be) to blame. 1
2 8.Seeing the doctor,the little boy said he didn ’t want to (examine). 二、写出画线部分的汉语意思 There was an explosion in a big storehouse.No one had foreseen 1. it and the neighbourhoods 2. near it were affected seriously.Many of the victims 3. were sent to the nearest hospital.And the physicians 4. did all they could to save the injured.However,the accident ’s consequence was severe 5. and some firemen died.We should learn from the explosion and avoid such accidents. 预料,预计 2.居民区 3.受害者 4.医生 5.严重的 三、单句填空 1.I wanted the children to keep (expose) to the language and culture. 2.This medicine will cure him his cough. 3.To our surprise,the man,who was looked down upon by others in the past,is now control of the whole project. 4. conclude,I ’d like to say how much I ’ve enjoyed staying here. 5.His expression suggested that he (be) angry. 6.Nobody is to blame it.
人教版九年级物理第十九章《生活用电》单元测试卷及答案
九年级物理第十九章《生活用电》单元测试卷 满分（90分） 题号一二三四五六总分得分 一、单选题（本大题共8小题，共24.0分） 1.我们国家规定的家庭电路的电压，安全电压，一节干电池电压分别是() A. 380V不高于36V1.5V B. 220V不高于36V1.5V C. 220V 36V 2V D. 110V不高于24V 2V 2.欢欢家的电路简化后如图所示，由该电路可知() A. a线是零线，b线是火线 B. 台灯和电视是串联在电路中的 C. 除开关外，整个电路都采用了并联的连接方法 D. 灯泡的开关应串接在灯泡的左侧导线中 3.如图所示为某家庭卫生间电路，闭合开关S，电灯正常发光，在三线插座上刚插上 电热水器的插头时，所有用电器都停止工作，拔出电热水器的插头后，检查发现零线上的熔丝断了。则下列分析合理的是() A. 闭合S，用测电笔检测三线插座左右的两个孔，氖管都发光 B. 闭合S，用测电笔检测三线插座左右的两个孔，氖管都不发光 C. 断开S，用测电笔检测三线插座左右的两个孔，氖管都发光 D. 断开S，用测电笔检测三线插座左右的两个孔，氖管都不发光 4.空气开关跳起后，手动使它复位，但又立即跳起，这不可能是()
A. 电路中有短路现象 B. 电路中出现了断路现象 C. 电路中总功率过大 D. 空气开关的额定电流过小 5.“珍爱生命，注意安全”是同学们日常生活中必须具备的意识。下列有关安全用电 的说法，不符合要求的是() A. 搬动用电器前要先断开电源开关 B. 雷雨天气尽快躲在大树底下避雨 C. 发现有人触电立即切断电源 D. 用电器达到使用寿命后及时更换 6.下列说法不正确的是() A. 使用电水壶、电饭锅时，金属外壳要接地 B. 通常情况下更换灯泡时要先断开灯泡所在支路的开关 C. 雷雨天气不要在树下避雨，以防雷击 D. 使用验电笔辨别零(火)线时，笔的前端金属体要与零(火)线相连，手不要接触 笔尾金属体 7.芸芸的妈妈从市场上买了一支廉价台灯，装上“220V25W”的灯泡后，将插头插 入家庭电路的插座后，室内电灯立刻全都熄灭，原因可能是() A. 灯泡的灯丝断了 B. 插头与插座接触不良 C. 台灯的灯座内断路 D. 台灯的插头内短路 8.欢欢家的电路简化后如图所示，由该电路可知 A. a线是零线，b线是火线 B. 台灯和电视是串联在电路中的 C. 电路中的用电器都是并联在电路中的 D. 三孔插座中上边的那个孔可以不接地 二、填空题（本大题共6小题，共15.0分） 9.教室里的各盏照明灯之间是______联的，开亮的灯越多，总 电阻______。如图所示，电工师傅站在干燥的木凳上检查教 室内的电路，他______(选填“能”或“不能”)发生触电事 故。
Unit1单元测试
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必修五Unit 5单元测试
高中英语必修5 Unit 5 First aid 单元测试题 第一部分：英语知识运用 第一节：单项选择 从A、B、C、D四个选项中，选出适合空白处的最佳选项。 1. Visitors _____ not to touch the exhibits (A). will request (B). request (C). are requesting (D). are requested 2. You should have come to the meeting. What ___ the reason for your absence. (A). is (B). will be (C). was (D). would be 3. Turn on the television or open a magazine and you ______ advertisements showing happy families. (A). will often see (B). often see (C). are often seeing (D). have often seen 4. A this time tomorrow ____ over the Atlantic. (A). we’re going to fly (B). we’ll be flying (C). we’ll fly (D). we’re to fly 5. It has been decided that all the students ____ stay in he classrooms even on Saturday evening in case they go to the Internet bars. (A). must (B). can (C). need (D). shall 6. He’s going to ____, ____ to take his own measure. (A)tailor’s, not Smith’s (B)the tailor’s, not the Smiths’ (C)the tailors’, not the Smiths’(D)tailors’, not Smiths’ 7. “What about the weather here in winter?” “It’s ____ warmer than in the north of this country.” (A)fairly (B)rather (C)quite (D)very 8. _______________ the school when the bell rang. (A) Hardly did I reach (B) I hardly reached (C) Hardly had I reached (D) I hardly had 9. If you _________ here a minute, the manager will be here in a moment. (A) will wait (B) wait (C) are going to wait (D) are waiting 10. Does it matter ______ it rains tomorrow? (A) if (B) that (C) whether (D) as 11. _________ and __________, they ran out of the room. (A) Excited, happily (B) Exciting, happy (C) Excitedly, happily (D) Exciting. happily 12. During the days ________, he worked as a servant. (A) following (B) followed (C) that followed (D) to follow 13. Tony is going camping with ______ boys. (A) little two other (B) two little other
2020年度人教版九年级上册物理第十九章《生活用电》单元测试卷
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A． 110 V 3 V B． 110 V 2 V C． 220 V 4.2 V D． 220 V 1.5 V 6.关于保险丝，下列说法正确的是() A．做保险丝的材料应该电阻较大熔点高 B．做保险丝的材料应该电阻较大熔点低 C．做保险丝的材料应该电阻较小熔点低 D．必要时找段铜丝代替 7.学习了家庭电路的知识后，小华与爸爸一起将书房电灯(L1)的开关断开，从开关内两个触点引出两根电线接在一个插座上，然后将台灯的插头插入插座，闭合台灯(L2)的开关，则() A．L1与L2均正常发光 B．L1与L2均能发光，但亮度比正常暗些 C．L1与L2均不能发光 D．L1与L2均能发光，但亮度比正常亮些 8.现要安装“220 V25 W”灯泡25只，应选择的保险丝规格是() A．熔断电流为3 A的保险丝 B．额定电流为3 A的保险丝 C．熔断电流为5 A的保险丝 D．额定电流为5 A的保险丝 9.在家庭电路中，下列情况不会造成触电现象的是() A．人站在地上，一只手接触火线 B．人站在地上，两只手同时接触火线 C．人站在地面上，两只手接触零线 D．人站在绝缘凳上，一只手接触火线，一只手接触零线 10.关于保险丝，下列说法正确的是() A．电路中有了保险丝就能起到保险作用 B．选用额定电流越小的保险丝，就越安全 C．选择适当规格的保险丝，才能够既不妨碍供电，又起到保险作用 D．当电路被保险装置切断时，不用检查电路，直接恢复供电，就可以了 11.用电安全是天大的事，在某地曾发生过这样一幕惨剧，某农户的鱼塘上空有高压线通过，一位钓鱼者抬杆取鱼时，钓鱼杆触及电线，钓鱼者当场触电身亡．下面说法不正确的是()
B译林版 Unit1 单元测试卷
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9B Unit1单元测试卷含答案
9B Unit1测试卷 姓名班级得分 第I卷（选择题共60分） 一、听力（共20分） 第一部分听对话回答问题（计10分） 本部分共有10道小题，每小题你将听到一段对话，每段对话听两遍。在听每段对话前，你将有5秒钟的时间阅读题目；听完后，你还有5秒钟的时间选择你认为最合适的备选答案。在听到“嘀”的信号后，进入下一小题。 ( ) 1. What are they talking about? A. B. C. ( ) 2. Which place wo n’t the boy go to today? A. B. C. ( ) 3. What are they talking about? A. B. C. ( ) 4. What is the boy doing? A. B. C. ( ) 5. What does the woman say Mr Zhang can do in France? A.Talk with the local people. B.Learn French. C.Teach French. ( ) 6. Why is Millie going to visit Hutongs in Beijing? A.Because she wants to live in a Hutong. B.Because she wants to learn more about Beijing. C.Because Hutongs are very famous in China. ( ) 7. Why is the woman moving house? A.She needs a quiet place. B.The new house is cheaper.
人教版高中英语必修五Unit 1 Great scientists单元检测
英语人教版必修5 Unit 1Great scientists单元检测 Ⅰ．单项填空 从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。 1．（2011江苏高考）—Are you still mad at her? —Not really，but I can't ______ that her remarks hurt me. A．deny B．refuse C．reject D．decline 2．（2011辽宁高考）The exam results will be ______ on Friday afternoon. A．put down B．put off C．put up D．put away 3．—In this day and age，women can have children and jobs as well. —I can't agree more.It's great to have the two ______. A．linked B．related C．connected D．combined 4．Your house is always so neat—how do you ______ it with three children? A．manage B．serve C．adapt D．construct 5．No matter how much money you have，it cannot ______ a healthy body. A．compare B．fit C．defeat D．match 6．（2012重庆高考）We're having a meeting in half an hour.The decision ______ at the meeting will influence the future of our company. A．to be made B．being made C．made D．having been made 7．（2012福建高考）Pressed from his parents，and ______ that he has wasted too much time，the boy is determined to stop playing video games. A．realizing B．realized C．to realize D．being realized 8．He always brings me a pretty gift ______ he comes to visit me. A．by the time B．sometimes C．every time D．at times 9．The doctor suggested that the girl ______ in order to lose weight. A．must not eat less B．ought not to eat less C．had better not eat less D．not eat less 10．（2012福建毕业班质检，28）The world is full of wonders，______ we open our eyes to see them. A．if only B．as if C．even if D．only if 11．（2012河北普通高考模拟）—How did she lose so much weight as expected? —______ eating less，she jogged for several miles every day. A．In spite of B．In addition to C．Instead of D．Thanks to 12．（2012山东潍坊一模）This restaurant，______ by an old couple，has an inviting，homelike atmosphere that many restaurants lack. A．owning B．having owned C．owned D．to own 13．What do you think of the suggestion ______ by the expert? A．put forward B．put up with C．put off D．put out
2020年人教版物理九年级全一册导第19单元《生活用电》单元测试卷带答案
2020年人教版物理九年级上学期第19单元《生活用电》单元测试卷带答案 一．选择题（共30小题） 1．现在一般标准住宅户内配电系统都使用了空气开关、漏电保护器、三线插座等设备，有一配电系统如图所示，以下各个设备的特征叙述正确的是（） A．电能表上可以直接读出应该交的电费 B．所选空气开关的断路电流应等于或略小于该电路允许通过的最大电流 C．漏电保护器用于当灯泡的灯丝烧断时，将电流导入大地 D．漏电保护器跳闸可能因为其安装的位置湿度过大 2．欢欢家的电路简化后如图所示，由该电路可知（） A．a 线是零线，b 线是火线 B．电能表是测量用电器总功率的 C．电路中的用电器都是并联在电路中的 D．三孔插座中上边的那个孔可以不接地
3．关于家庭电路，下列说法正确的是（） A．工作的用电器越多，电路的总电阻越大 B．使用测电笔时，手必须接触测电笔的笔尾金属体 C．家庭中的电能表是测量总电功率的仪表 D．洗衣机、电冰箱等家用电器使用三角插头是为了节约用电4．如图所示的家庭电路，连接方式正确的是（） A． B． C．
D． 5．如图所示是某同学设计的家庭电路，电灯开关已断开，下列说法正确的是（） A．灯泡和两孔插座是串联的 B．开关和三孔插座的连接都是错误的 C．试电笔接触M点，氖管不发光 D．试电笔插入两孔插座的左孔，氖管发光 6．下图所示的四个家庭电路，符合家庭电路连接要求的是（） A． B．
C． D． 7．某同学家有一盏正在发光的电灯，断开开关后电灯熄灭，但用试电笔去测试灯头上的两根电线时，氖管都发光，其原因可能是（） A．开关接在了火线上B．开关接在了零线上 C．灯头中有短路现象D．开关中有短路现象 8．电工师傅常用一只额定电压为220V的灯泡L0（检验灯泡）取代保险丝来检查新安装的照明电路中每个支路的情况，如图所示。当S闭合后，再分别闭合S1、S2、S3（每次只能闭合其中之一）时，下列说法错误的是（） A．只闭合S、S1时，L0不亮，说明该支路断路 B．只闭合S、S2时，L0正常发光，说明该支路短路 C．只闭合S，S3时，L0发光呈暗红色，说明该支路正常 D．只闭合S、S1时，若L0正常发光，用试电笔检测A点氖管发光
unit1 单元测试卷
Unit1 单元测试卷 听力部分 一、听音，选词填空。 ( ) 1. We’re going to ________ a story. A. read B. write ( ) 2. We’re going to have a party ________. A. this week B. next week ( ) 3. ________ is going to sing for us. A. Tom B. Tony ( ) 4. It’s a ________ play. A. long B. short ( ) 5. Here is a ________. A. bag B. box 二、听音，给图片标序号。 ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) 三、听音，选择合适的图片序号填入名字下的括号内。 A. B. C.
D. E. Dick Kate Mr Li Mary Lily ( ) ( ) ( ) ( ) ( ) 四、听音，判断句子正误。 ( ) 1. It’s a story about three pigs. ( ) 2. Let’s talk about the animals. ( ) 3. We’re going to swim. ( ) 4. Dick is going to play football. ( ) 5. We’re going to read an English story. 五、听音，完成短文。 We’re going to ________ a story about Monkey King. We’re going to ________ about it. We’re going to ________ some pictures. We’re going to ________ a short play. We’re going to put on a play ________ week. 笔试部分 一、看图。连接相对应的单词。 (1) A. read (2) B. write
9B.Unit1单元测试
五河县九年级英语下册单元清 Unit 1测试题 学校_____ 班级______ 姓名______ 考号______ 第一部分听力（共五大题，满分30分） I. 关键词语选择（共5小题；每小题1分，满分5分） 你将听到五个句子。请在每小题所给的A、B、C三个选项中选出一个你所听到的单词或短语。每个句子读两遍。 ( )1. A. skirt B. snake C. smoke ( )2. A. regret B. repeat C. report ( )3. A. weak B. wet C. west ( )4. A. deaf B. dead C. deep ( )5. A. give away B. give out C. give up II. 短对话理解（共10小题；每小题1分，满分10分） 你将听到十段对话，每段对话后有一个小题。请在每小题所给的A、B、C三个选项中选出一个最佳选项。每段对话读两遍。 ( )6. Which is mentioned in the conversation? A. B. C. ( )7. What’s the boy’s favorite sport? A. B. C. ( )8. What’s the season when they talk? A. B. C. ( )9. How did Mary go to school yesterday?
A. B. C. ( )10. W hat does Tony usually do at the weekends? A. B. C. ( ) 11. What’s the date today? A. May 1st B. May 3rd C. May 5th ( )12. What does the man order? A.Some hamburgers and coffee B. Some fish and chips C. Some bread and chips ( )13. What’s the relationship between the two speakers? A. Husband and wife B. Student and teacher C. Manager and worker ( )14. Where are the two speakers? A. In a library B. In a cloth shop C. In a bookstore ( )15. What does the woman mean? A. She will help the man. B. She won’t help the man. C. She will do it by herself III. 长对话理解（共5小题；每小题1分，满分5分） 你将听到两段对话，每段对话后有几个小题。请在每小题所给的A、B、C三个选项中选出一个最佳选项。每段对话读两遍。 听下面一段对话，回答第16 至17小题。 ( )16. Who did Simon go to the Animal Center with last weekend? A. His parents B. His friends C. His classmates ( )17. What did Simon do there? A. He fed the animals. B. He took photos C. He visited the workers. 听下面一段对话，回答第18至20小题。 ( )18. When are they going to see the movie? A. This afternoon B. Tomorrow morning C. Tomorrow afternoon ( )19. How long will the movie be on? A. For three days. B. For a week C. For two weeks. ( )20. How much will they pay for two tickets online? A. 30 yuan B. 60 yuan C. 120 yuan IV. 短文理解（共5小题；每小题1分，满分5分） 你将听到一篇短文，短文后有五个问题。请根据短文内容，在每小题所给的A、B、C三个选项中选出一个最佳选项。短文读两遍。 ( )21. What did the old gentleman think of modern education?
人教版高中英语必修五unit1课文重点练习详解
Unit 1 GREAT SCIENTISTS JOHN SNOW DEFEATS “KING CHOLERA”John Snow was a famous doctor in London — so expert, indeed, that he attended Queen Victoria as her personal physician. But he became inspired when he thought about helping ordinary people (who were) exposed to cholera. This was the deadly disease of its
day. Neither its cause nor its cure was understood. So many thousands of terrified people died every time there was an outbreak. John Snow wanted to face the challenge and solve this problem. He knew that cholera would never be controlled until its cause was found. (expose:1暴露be exposed to all kinds of weather.经受
风吹雨打。Expose sb to danger 使某人面临危险。 A student who has been exposed to English for some 6 years.接触英语达 六年左右的学生。 2.揭露。Expose a politician’s lies. He has been exposed as a liar.他说谎的行为被揭穿。） He became interested in two theories（that possibly explained how cholera killed people）. The first
人教版九年级物理全一册 第19章 生活用电 单元测试卷
人教版九年级物理全一册第19章生活用电单元测试卷题号一二三四五六总分得分 一、单选题（本大题共8小题，共24分） 1.下列做法中属于节约用电的是() A. 白天总是用灯光代替自然光照明 B. 夏天，把空调温度尽量调低一些 C. 离开教室随手关灯 D. 用电水壶烧水时不盖盖子 2.以下操作不符合安全用电要求的是() A. 更换灯泡时要切断电源 B. 保险丝熔断后可用铜丝代替 C. 将开关接在用电器和火线之间 D. 有金属外壳的家用电器其外壳一定要接地 3.如图是某取暖器的工作电路图。为了安全起见，取暖器一般都要安装一个跌倒开关 S，使取暖器倾倒时整个电路断开。则跌倒开关S应安装在() A. a处 B. b处 C. c处 D. d处 4.关于家庭电路，下列说法中正确的是() A. 用电器电线绝缘皮破损了仍继续使用 B. 在家庭电路中可以不安装空气开关或保险丝 C. 家电维修时，要先断开开关 D. 家庭电路中总电流过大，是由于电路中用电器的实际功率过大引起的 5.关于安全用电，下列说法正确的是() A. 更换灯泡前应断开电源开关 B. 使用绝缘皮破损的电线供电 C. 在高压输电线附近放风筝 D. 用湿抹布擦发光的灯泡 6.在发生碰撞事故时，安全带起到的保护作用能达到90%.当系好安全带时，相当于 闭合开关，指示灯不亮：未系好安全带时，相当于断开关，指示灯发光。符合上述要求的电路图是()
A. B. C. D. 7.在家庭电路中，下列情况不会造成触电现象的是() A. 人站在地上，一只手接触火线 B. 人站在地上，两只手同时接触火线 C. 人站在地面上，两只手接触零线 D. 人站在绝缘凳上，一只手接触火线，一只手接触零线 8.如图所示是小英家的部分电路，闭合开关S(家中其他用 电器均处于断开状态)后灯泡L正常发光，一段时间后灯 泡L突然熄灭，他用试电笔分别测试了插座的两个孔， 发现试电笔都发光。断开开关S，再次用试电笔分别测试了插座的两个孔，他将观察到(假设故障只有一处)() A. 测试两孔时试电笔都发光 B. 测试两孔时试电笔都不发光 C. 只有测试右面的孔时试电笔才发光 D. 只有测试左面的孔时试电笔才发光 二、多选题（本大题共2小题，共6分） 9.随着人们生活水平的逐步提高，家用电器不断增多。在家庭电路中，下列说法错误 的是() A. 灯与控制它的开关是并联的，与插座是串联的 B. 使用测电笔时，不能用手接触到笔尾的金属体 C. 电路中电流过大的原因之一是使用的电器总功率过大 D. 增加大功率用电器时，只需换上足够粗的保险丝即可 10.在表演台上，某人声称具有特异功能--“不怕电”.他把灯泡接到家庭电路的两根电 线上，灯泡亮．取下灯泡后，他用双手同时抓住这两根电线芯，并让别人用测电笔触其肌肤，众人见氖管发光而瞠目结舌．对此，某班同学展开讨论后形成以下观点，其中正确的是() A. 这是伪科学的欺骗行为 B. 此人也许真有不导电的特异功能 C. 此人与大地之间一定有良好的绝缘 D. 他去抓那两根电线前，零线已被助手切断