开心英语GOGO三年级期中试卷
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2013~2014年学年度第二学期三年级英语期中(Unit 1~Unit 4)单元测试题班别:姓名:学号:成绩:Part 1 听力部分一、听音,选择正确的词语和句子。
(10)1. ( ) A . happy B . big C. tall2. ( ) A . we B . he C. they3. ( ) A . animal B .table C. good4. ( ) A . orange B . blue C. brown5. ( ) A . yellow B . you C. pink6. ( ) A . pillow B . door C. white7. ( ) A . lamp B . lion C. window8. ( ) A . The orange is orange. B . The cat is small .C. The boy is happy .9. ( ) A . The bed is pink . B . The car is white .C. The door is brown.10. ( ) A . What is this ? B . What color is this?C. What are these ?二、听音,选择正确的答语。
(10)1. ( ) A. It’s a cat . B. It’s black. C. They’re apples.2. ( ) A. Yes, it is . B. Yes, they are . C. No ,it is.3. ( ) A. It’s green . B. It’s a pink lamp . C. It’s on the desk .4. ( ) A. It’s a pear . B. They’re pears . C. Fine, thanks .5. ( ) A. Yes ,it is . B. No, it isn’t . C. No, they aren’t.三、听录音,连线。
粤人版(开心英语)三年级上册期中测试英语考试卷姓名:_____________ 年级:____________ 学号:______________题型选择题填空题解答题判断题计算题附加题总分得分1 . 按字母顺序写出下列字母的相邻字母。
评卷人得分1. Bb2.H h ___________3. F f4. F f _______ ________5. _________ ________ L l2 . - Is this a rabbit? ( )-________, it is.A. YesB. NoC. Not3 . It’s _____ pen. ( )A. isB. aC. an4 . -_____________ ( )- It’s an elephant.A. What’s your name?B. How about me?C. What’s this?5 . -______ is he? ( )-He is my father.A. HowB. WhoC. What6 . ______ name’s Tom. ( )A. IB. SheC. His7 . 将图片和相应的句子用线连起来。
1. A. It’s a monkey.2. B. It’s a pencil.3. C. Hello, Tony.4. D. He is my father.试卷第 2 页共 2 页5. E. She’s my grandmother.8 . 连词成句。
1. this Is dog a (?)_____________________________2. name What’s your ( ?)_____________________________3. to Nice Gogo you meet (.)_____________________________4. your Draw family ( . )_____________________________5. is He my friend (,)_____________________________9 . 从右栏中选出左栏句子的正确翻译。
三年级英语听力部分:一、听朗读,选出你所听到的字母,填序号。
5分( ) 1. A. Gg B. Jj C. Ll( ) 2. A. Xx B. Cc C. Ss( ) 3. A. mn B. nn C. nm( ) 4. A. HK B. UK C. PK( ) 5. A. USA B. PRC C. MTV二、听朗读,判断对错,对的写“T”,错的写“F”。
6分1. 2. 3.( ) ( ) ( )( ) ( ) ( )三、听朗读,用数字标出正确的顺序。
6分( ) What’s this? ( ) Is this a monkey? ( ) Hello , I’m Gogo ! ( ) I’m Jenny. ( ) No , it’s a panda. ( )What’s your name?四、听问题,选答语。
10分( ) 1. A. Hello, Tony ! B. Hi, Gogo! C. Hi, jenny!( ) 2. A. I’m boomer. B. I’m Ben. C. My name’s gogo. ( ) 3. A. It’s a cat. B. It is chair. C. It’s elephant.( ) 4. A. Nice to meet you, too. B. Hello! C. Hi!( ) 5. A. bye, Bonnie! B.Goodbye, gogo! C. Bye,Tony!五、听朗读,用“√”选出相应的图画。
4分1. 2.( ) ( ) ( ) ( )3. 4.( ) ( ) ( ) ( ) 六、听句子,选出相应的同义句,填序号。
4分( ) 1. A. I’m Gogo. B. My name’s Tony.( ) 2. A. It is a bird . B. Is this a bird?( ) 3. A. Hello, Ben! B. Hi , I’m Ben!( ) 4. A. Bye, Bonnie ! B. Goodbye, Boomer!七、听朗读,按字母书写形式,写出你所听到的字母大小写形式。
小学三年级英语期中试卷一、选择题(共10题,每题2分,共20分)1. A: Good morning, Amy!B: ______________.A. Good morning!B. How are you?C. Nice to meet you.2. What is your name?A. My name is Jim.B. Jim is 8 years old.C. I'm a student.3. How old are you?A. No, I'm not.B. Yes, thank you.C. I'm 9 years old.4. A: Can you swim?B: Yes, ______________.A. I can swim.B. I like swimming.C. I'm swimming.5. A: Where are you from? B: ______________.A. I'm a student.B. I'm from China.C. I like sports.6. A: What color is the sky? B: ______________.A. It is blue.B. No, it's not.C. Yes, it is.7. A: Do you have any pets? B: Yes, ______________.A. I have a dog.B. I like dogs.C. My friend has a cat.8. A: How do you go to school?B: ______________.A. I go to school by bus.B. I like going to school.C. I'm going to school now.9. A: How many apples do you have? B: ______________.A. I have an apple.B. I don't have any apples.C. I have three apples.10. A: What's your favorite subject? B: ______________.A. I like English.B. I have English class at 9 o'clock.C. My teacher's name is Mrs. Smith.二、填空题(共5题,每题2分,共10分)1. I _________ a book in my bag.2. _________ are you? - I'm Pete.3. They _________ Chinese.4. _________ is my friend's birthday today.5. She _________ a beautiful dress.三、阅读理解(共5题,每题4分,共20分)Jenny is seven years old. She is from America. She has two brothers. Her favorite color is orange. She likes to play soccer. She goes to school by bus. Her best friend is Amy. They play together every day after school.1. How old is Jenny?2. Where is Jenny from?3. How does Jenny go to school?4. What is Jenny's favorite color?5. Who is Jenny's best friend?四、写作(共1题,10分)请根据自己的家庭情况,自由发挥写一段话。
2013~2014年学年度第二学期三年级英语期中(Unit 1~Unit 4)单元测试题班别:姓名:学号:成绩:Part 1 听力部分一、听音,选择正确的词语和句子。
(10)1. ( ) A . happy B . big C. tall2. ( ) A . we B . he C. they3. ( ) A . animal B .table C. good4. ( ) A . orange B . blue C. brown5. ( ) A . yellow B . you C. pink6. ( ) A . pillow B . door C. white7. ( ) A . lamp B . lion C. window8. ( ) A . The orange is orange. B . The cat is small .C. The boy is happy .9. ( ) A . The bed is pink . B . The car is white .C. The door is brown.10. ( ) A . What is this ? B . What color is this?C. What are these ?二、听音,选择正确的答语。
(10)1. ( ) A. It’s a cat . B. It’s black. C. They’re apples.2. ( ) A. Yes, it is . B. Yes, they are . C. No ,it is.3. ( ) A. It’s green . B. It’s a pink lamp . C. It’s on the desk .4. ( ) A. It’s a pear . B. They’re pears . C. Fine, thanks .5. ( ) A. Yes ,it is . B. No, it isn’t . C. No, they aren’t.三、听录音,连线。
小学2011―2012学年度第二学期三年级英语期中试卷班别:__________ 姓名:__________ 成绩:__________Part 1 听力部分一. 听录音,把你听到的字母、单词或句子的代号填在括号里。
(10分) ( )1.A.this B.that C.fish ( ) 2.A.red B.gray C.bed ( ) 3.A.thumb B.bathroom C.clock ( ) 4.A.snake B.light C.game( ) mp B.window C.pillow ( ) 6.A.sad B.math C.big( ) 7.A.play B.rain C.airplane ( ) 8.A.I like soccer. B.I don’t like soccer. C.I like soccer and tennis.( ) 9.A.I’m happy. B.She’s happy..C.He’s happy..( ) 10.A.This is a butterfly. B.That ’s an orange. C.These are cherries.二.听问句,找出正确的答语。
(10分)( ) 1.A.It’s yellow. B. It’s an orange. C. Snake. ( ) 2.A.He’s Ben. B. She’s Jenny. C. I’m Lisa. ( ) 3.A. I’m a student. B. I like bread. C. Yes, I do. ( )4.A.Yes, I am. B. No, they aren ’t. C. No, she isn’t. ( ) 5.A.It’s soup. B. It’s pink. C. It’s a pillow. ( ) 6.A.Yes,they are. B. Yes, I can. C. Yes, I do. ( ) 7.A.OK. B. Bye. C. Thank you. ( ) 8.A.They ’re oranges. B.I am five.C. It ’s an orange orange.( ) 9.A.I like bread. B. No, I don’t. C. Yes, I do. ( )10.A.No,it isn’t. B. Yes, it isn’t. C. It’s a lamp.三.听录音,标出下列图画的顺序。
2020学年度农林小学粤人版(开心英语)三年级上册期中模拟测试英语考试卷姓名:_____________ 年级:____________ 学号:______________题型选择题填空题解答题判断题计算题附加题总分得分1 . 按字母表的顺序默写Gg—Rr。
2 . 找出不同类的单词,将其序号写在括号里。
(______) 1. A. tiger B. apple C. ice cream(______) 2. A. Jenny B. mother C. Gogo(______) 3. A. mother B. fish C. grandmother(______) 4. A. chair B. friend C. desk(______) 5. A. ice cream B. banana C. apple3 . 在右栏中找出左栏句子的答语,把序号写在括号里。
(______) 1. What’s this? A. She’s my mother.(______) 2. Is this a ruler? B. It’s a lion.(______) 3. Goodbye! C. Yes, it is.(______) 4. Who’s she? D. Bye!(______) 5. What’s your name? E. Nice to meet you, too!(______) 6. Nice to meet you! F. I’m Gogo.4 . What’s this? ( )It’s________.A. tigerB. A tigerC. a tiger5 . Is this a ruler? ( )Yes, _________.A. is itB. it isn’tC. it is6 . _________ he? ( )He’s my friend.A. What’sB. Who’sC. Is7 . She’s my_________.( )A. grandfatherB. sisterC. Jenny评卷人得分8 . What’s your name? ( )I’m_________ .A. tonyB. BenC. jenny9 . _________this an elephant? ( )A. What’sB. IsC. It10 . _________ to meet you. ( )A. NiceB. nice toC. Nice to11 . 别人问你姓名,你可以这样回答:( )A. He’s Tony.B. I’m Tony.C. What’s your name?12 . 下午在校园里见到同学,你应说:( )A. Good morning!B. Good afternoon.C. Goodbye!13 . 你想知道某种东西用英语怎么说,应问:( )A. What’s this?B. What’s your name?C. How are you?14 . 弟弟指着香蕉问你:Is this a banana? 你应答:( )A. Very good!B. Yes, it is.C. No, it isn’t.15 . 你向老师介绍你的姐姐,你会说:( )A. She’s my mother.B. She’s my sister.C. He’s my grandfather.16 . 看图完成句子。
2022~2022学年度第一学期小学三年级英语期中练习卷学校班别姓名评分Part 1 听力局部一、听先字母、单词和句子.〔10分〕〔〕1. A. J B. A C. K〔〕2. A. B B. C C. D〔〕3. A. FL B. FH C. LH〔〕4. A. book B. cook C. desk〔〕5. A. father B. brother C. mother〔〕6. A. fish B. friend C. family〔〕7. A. cat B. hat C .ant〔〕8. A. sing B. swim C. sister〔〕9. A. What’s you name? B. What’s her name?C. What his name?〔〕10. A. It’s an desk. B. It’s an eraser.C. It’s a desk.二、听录音,以下图中与所听内容相符的写“T〞,不相符的写“F〞.〔5分〕三、听问句,选答语.〔10分〕〔〕1. A. My name Jenny. B. I’m Jenny.C. Your name’ Jenny.〔〕2. A. She’s my mother. B. He’s my mother.C. She’s my father.〔〕3. A. Yes, I can’t. B. No, I can.C. Yes, I can.〔〕4. A. It’s an table. B. It’s a eraser.C. It’s a pencil.〔〕5. A. How are you. B. I’m fine, thanks.C. Hello.〔〕6. A. Nice to meet you, too. B. I’m Gogo.C. Good mo r ning.〔〕7. A. Goodbye. B. Good afte r noonC. Good mo r ning.〔〕8. A. He’s my brother. B. He’s my sister.C. She’s my mother.〔〕9. A. Yes, I can’t. B. No , I can. C. No, I can’t.〔〕10. A. I’m +自己的名字. B. It’s a book.C. He’s my father.四、听录音,给以下图标号,如1,2,3……(5分)五、听录音,填补句子.〔10分〕1. Who’s ? my .2. What’s name ? Jenny.3. you ? No, I .4.What’s ? It’s a .Part 2 笔试局部一、用正确的书写格式抄写以下句子和单词.〔10分〕1.Nice to meet you. goodbye hello pencil2.She’s my mother. eraser family sister二、选择填空.〔10分〕〔〕1. 当有人对你说“Hello.〞时,你应怎样答复?A.Goodbye. B. Hi. C. Nice to meet you.〔〕2.你想知道某个人的名字,你应该怎样问他或她?A.What’ you name? B. What’ your name?C. What’s name?〔〕3.当有人对你说“Goodbye.〞时,你应怎样答复?A.Bye. B. Hello. C. Hi.〔〕4.如果有个外国人对你说“Nice to meet you.〞你应答复?A.Hello. B. Goodbye. C. Nice to meet you, too.〔〕5.当你想知道离你很近的某样东西是什么时,你应该问:A.What’s that? B. What’ this? C. What’ your name?〔〕6. What’s this ? It’book.A. aB. anC.不需要填写〔〕7. Who’s ? my mother.A. he , He’sB. she, she’sC. she, She’s〔〕8.Who’s ? my father.a b d f i s h d t b m o t h e rg h d c k p e n c i l y g o w h j m d r a w xa c yb o o k t g i r l q b a p vA. she, He ’sB. she, He ’sC. he, He ’s 〔 〕9.别人和你说“ How are you 〞时,你应该说:A .I ’m fine, thanks. B. Hello. C. Goodbye.〔 〕10.What ’ this ? It ’ apple.A. aB. anC.不用填三、填补单词,并选出中文意思.〔10分〕〔 〕1. b k A. 男孩 B. 书本 C.熊猫〔 〕2. g dbye A. 你好 B. 再见 C.名字〔 〕3. ister A.姐妹 B. 兄弟 C.妈妈〔 〕4. famil A.爸爸 B. 朋友 C.家庭 〔 〕5. dr A. 唱歌 B. 画画 C.烹调四、看图填空.〔10分〕1. this ?a .2.Can you ?, .3.Who ’s ?my .五、读一读,找一找,圈出你会的单词.(10分)pencil bookfishmothe girlsingdraw六.按顺序默写A a ~Q q 〔大小写〕.〔10分〕。
三年级英语第一学期期中水平测试请选出你所听到的字母、单词或句子,把字母代号写在括号里。
(10分))1. A. GH B. JH C. MG)2. A.KFC B. MBA C. NBA)3. A. USA B. USB C.UNC)4. A. cat B. hat C. chair)5. A. pen B. pencil C. panda)6. A. table B. desk C. ruler)7. A. this B. is C .his)8. A. nice B. kite C. meet)9. A. What’s this? B. What’s that? C. What’s your name? )10. A. It’s a desk. B. It’s a n apple. C. Is this a ruler?朗读,按朗读的顺序给图片标号,如1,2,3。
(10分)) ( ) ( ) ( ) ( )) ( ) ( ) ( ) ( ) (10分))1. A. My name Jenny. B. I’m Jenny.()2. A. She’s my mother. B. He’s my father.()3. A. Yes, I am. B. No, I can’t()4. A. It’s an table. B. It’s an eraser.()5. A. How are you. B. I’m fine, thanks.()6. A. Nice to meet you, too. B. I’m Gogo.()7. A. Goodbye. B. Hi.()8. A. Hello. B. Bye.()9. A. Yes, it is. B. No , it isn’t.()10. A. His name’s Tony. B. Her name’s Jenny.四、听朗读,判断对错,对的写“T”,错的写“F”。
三年级英语图期中测试试卷班别:_________ 姓名:__________ 成绩:__________Part 1 听力部分一、听音选择字母,单词和句子(10分)( )1.A. T B. E C. Y( )2. A. W B. M C. N( )3. A. CD B. VB ( )4. A. DVD B. HCG C.WMP( )5.A. hello B. hi C. bye( )6.A. book B. cook C. goat( )7. A.I’m Tony. B. I’m Gogo. C.I’m Jenny( )8. A. It’s a desk. B. It’s a book. C. It’s a pencil.( )9. A.What’s this? B. What’s your name?C.Can you read?( )10.A.He’s a student. B.She’s my mother.C.His name’s Ben.二、请根据录音的内容选出正确的图画,将其代号写在括号写在题前括号里。
(10分)( )1. A A( )2.A. B. C.( )3.A.( )4.A. B. C.三、听音,标上序号。
(10分)( )1. It’s an eraser.( ) 2. Hello!( ) 3. I’m Tony.( ) 4. What’s this?( ) 5. Can you sing?( ) 6. No, I can’t.Part 2 笔试部分一、按字母表的顺序默出“Hh——Qq”的大小写字母。
(10分)二、选择下列单词正确的中文意思。
(10分)( )1.book (A.书本 B.鸡蛋 C.桌子)( )2.swim (A.飞 B.读 C.游泳)( )3.goat (A.女孩 B.河马 C.山羊)( )4.banana (A.狗 B.香蕉 C.梨)( )5.fox (A.狐狸 B.鱼 C.鸡)( )6.table (A.书桌 B.桌子 C.椅子)( )7.cat (A.猫 B.狗 C.熊)B. C.B.C.( )8.draw (A.画 B.煮 C.飞)( )9.jam (A.果汁 B.果酱 C.风筝)( )10.monkey (A.猴子 B.狮子 C.妈妈)三从B栏中选出A栏的答案。
三年级英语上册期中模拟测试(开心版)听力部分(40分)一、选出你所听到的单词。
(10分)()1. A. pencil B. desk C. thank()2. A. bye B. how C. hi()3. A. at B.cat C. it()4. A. elephant B. family C. classroom()5. A. good B. friend C. book二、判断所听单词爱与所给单词是否相同,相同的写“T”不同的写“F”。
(10分)1.hello2. table3. chair4. about5. sister ( ) ( ) ( ) ( ) ( )6.very7. pencil8. who9. his 10. draw ( ) ( ) ( ) ( ) ( )三、根据所听内容,给下列图片排序。
(10分)( ) ( ) ( ) ( ) ( )四、判断所给图片与所听内容是否相符,相符的画“√”,不符的画“×”。
(10分)1. 2. 3. 4. 5.笔试部分(60分)一、按字母顺序写出下列字母的相邻字母。
(10分)1. Bb2. Hh3. Ff4. Ff5.Ll二、单项选择。
(10分)()1. - Is this a rabbit? -________, it is.A.YesB. NoC. Not()2. It’s _____ pen.A.isB. aC. an()3. -_____________ - It’s an elephant.A.What’s your name?B. How about me?C. What’s this? ()4. -______ is he? -He is my father.A.HowB. WhoC. What()5. ______ name’s Tom.A.IB. SheC. His三、将图片和相应的句子用线连起来。
(10分)A. It’s a monkey.B. It’s a pencil.C. Hello, Tony.D. He is my father.E. She’s my grandmother.四、连词成句。
三年级英语期中考试试卷姓名班级分数一、从字母A写到。
(20分)二、找出我们学过的单词。
(20分)walk ________________________________________________________________________________________________________________________________________________________________________________________ 三、完成对话。
(20分)四、读后连线。
(20分)小学六年级英语上册期末考试试卷(第一套)(一)听力部分一.选出听到的单词:( )1. a. nice b. nine c. fine( )2. a. photo b. phone c. bowl( )3. a. fridge b. first c. fruit( )4. a. same b. name c. some( )5. a. count b. old c. out( )6. a. my b. may c. why( )7. a. wash b. washing c. washer( )8. a. iss b. r c. rs( )9. a. letter b. let c. little( )10. a. long b. wrong c. song二.选出听到的句子:( )1.a. How many buses are there in the street?b. How many cars are there in the street?c. How many bikes are there in the street? ( )2.a. hat’s his sister’s name?b. hat’s her sister’s name?c. hat’s his brother’s name?( ) 3. a. How old is ary, Jane?b. How old is Jane, Jack?c. How old is Jack, ary?( )4. a. The reading room is Room 234.b. The reading room is Room 324.c. The reading room is Room 432.( ) 5. a. There is a big dog under the tree.b. There is a small bird in the tree.c. There is a small cat under the table. ( )6.a. Are the boys in yellow your classmates?b. Are the boys in yellow your friends?c. Are the boys in yellow your brothers?( )7. a. You’ve got three big books?b. You’ve got two big boxes.c. You’ve got twelve big books.三.选择正确的应答句:( )1. a. I’m from China. b. I’m a Chinese teacher. c. I’m not Chinese.( )2. a. I’m nine. b. I’m fine. c. I’m a pupil.( )3. a. It’s in the book. b. They’re in the book. c. They are Japanese stamps.( )4.a. Yes, there are. b. No, there isn't. c. There are five.( )5.a. I'm sorry. b. No, thanks. c. No, you can't.四.根据你所听到的内容,判断正误。
班级____________ 姓名_____________ 座号_____________ 广东开心版小学英语三年级下册期中测试卷听力部分(40%)一、听录音,选出你所听到的单词。
(6分)1.()A.pear B.watch C.peach2.()A.cherry B.watermelon C.clock3.()A.orange B.blue C.brown4.()A.big B.small C.grape5.()A.green B.watermelon C.purple6.()A.pencil B.desk C.pillow二、听录音,给下列图片排序。
(16分)()()()()()()()()三、听录音,选出你所听到的句子。
(10分)1.()A.They’re small.B.He’s big.2.()A.What color is this? B.What color is it?3.()A.It’s a blue desk. B.It’s a red chair.4.()A.Is that a black pillow? B.Is that a white pillow? 5.()A.Are these pears? B.Are they cats?四、听问句,选答语。
(8分)1.()A.Yes, I am.B.Yes, she is.2.()A.It’s an apple. B.They’re apples.3.()A.It’s a clock.B.It’s blue.4.()A.Yes, it is. B.Yes, they are.笔试部分(60%)一、看图,选词,填字母编号。
(8分)A.lion B.strawberry C.pencil D.watch E.lamp F.read G.pear H.watermelon()()()()()()()()二、看图,在四线三格中,正确写单词。
三年级英语期中考试试卷姓名班级分数一、从字母A写到。
(20分)二、找出我们学过的单词。
(20分)walk ________________________________________________________________________________________________________________________________________________________________________________________ 三、完成对话。
(20分)四、读后连线。
(20分)A.家庭电路正常工作时,L中的磁通量为零B.家庭电路中使用的电器增多时,L中的磁通量不变C.家庭电路发生短路时,开关K 将被电磁铁吸起D.地面上的人接触火线发生触电时,开关K 将被电磁铁吸起【解析】当电路正常工作时,电流经火线流入用电器,再经零线流回.由于火线和零线并行绕在铁芯左侧,火线和零线中的电流反向,合磁通量为零,故A、B 正确.用电器短路后,火线和零线中电流仍然等大、反向,铁芯中无磁通量,开关不会被电磁铁吸起,C 错误.当地面上的人触电时,火线中的电流经人体流入大地,由于电磁感应,L产生感应电流,电流经放大器放大后,使电磁铁吸起铁质开关K,从而切断家庭电路,D 正确,故应选择C.【答案】C6.请用仪器:热敏电阻,学生电源,继电器,滑动变阻器,开关,导线等设计一个由温度控制小灯泡发亮的电路.【解析】设计图如图,闭合S后,有电流通过继电器,但R较大,继电器产生的磁场较弱,当R的温度升高,电阻减小,继电器产生的磁场显著增大,S被吸下来,小灯泡发光,温度降低,磁性减弱,S弹开,小灯泡熄灭,从而达到由温度控制灯泡的亮和灭.【答案】见解析7.如图所示为一实验小车中利用光电脉冲测量车速和行程的示意图.A 为光源,B 为光电接收器,A、B 均固定在小车上,C 为小车的车轮.D 为与 C 同轴相连的齿轮,车轮转动时,A 发出的光束通过旋转齿轮上齿的间隙后变成脉冲光信号,被B 接收并转换成电信号,由电子电路记录和显示.若实验显示单位时间的脉冲数为n,累积脉冲数为N,试完成下列问题的解答:(1)要测小车的速度和行程还必须测量的物理量或数据是哪些?(2)推导小车速度的表达式.(3)推导小车行程的表达式.【解析】由于车轮与齿轮同轴故角速度相等,如果测出角速度并已知车轮的半径R,则车的速度为v=ωR.ω=θ/t=2πn/p(式中p 为齿轮的齿数);车速为v=ωR=2πRn/p;行程为s=vt=vN/n=2πRN/p.因此:(1)要测出小车的速度和行程还必须测量的物理量或数据是车轮半径R 和齿轮的齿数p;(2)小车速度的表达式为v=2πRn/p;(3)小车行程的表达式为s=2πRN/p.【答案】(1)车轮的半径R 和齿轮的齿数p (2)v=2πRn/p(3)s =2πRN/p能力提升1.如图所示,两块水平放置的金属板距离为d,用导线、电键K 与、)一个n 匝的线圈连接,线圈置于方向竖直向上的变化磁场 B 中.两板间放一台小压力传感器,压力传感器上表面静止放置一个质量为 m 电量为+q 的小球.K 断开时传感器上有示数,K 闭合时传感器上恰好无示数.则线圈中的磁场 B 的变化情况和磁通量变化率分别是(A .正在增加 ΔΦ mgdB .正在增 ΔΦ mgd , Δt = 2q 加 , Δt = nqC .正在减 ΔΦ mgdD .正在减 ΔΦ mgd 弱, Δt = 2q 弱, Δt = 2nq【解析】 K 闭合时传感器上恰好无示数,说明小球所受电场力和重力平衡,由于小球带正电,所以电容器上极板为负,由楞次定律,可知线圈中的磁场B 正在增加.根据分析列出方程:mg qU ΔΦ = d =qn Δt1 ΔΦ mgd d ,解得 Δt = nq,可见B 选项正确.【答案】 B2.家用电热灭蚊器中电热部分的主要部件是PTC 元件,PTC 元件是由酞酸钡等半导体材料制成的电阻器,其电阻率与温度的关系如图所示,由于这种特性,PTC 元件具有发热、控温两重功能,对此以下说法中正确的是( )A.通电后其功率先增大后减小B.通电后其功率先减小后增大C.当其产生的热量与散发的热量相等时,温度保持在t至t的某一值不变D.当其产生的热量与散发的热量相等时,温度保持在t或t不变【解析】根据PTC 元件的电阻率随温度变化的曲线,可知在常温下,它的电阻是相当小的,通入电流以后,随着温度的升高,其电阻率先变小后增大,那么它的功率先变大,后变小,温度保持在t至t的某一值不变,这时候电路处于稳定状态,如果温度再升高,电阻率变大,导致电流变小,温度就会降下来;如果温度降低,电阻率减小,导致电流变大,温度就会升上去,所以本题答案为A、C.【答案】AC3.有一种测量人体重的电子秤,其原理图如右图中的虚线所示,它主要由三部分构成:踏板、压力传感器R(是一个阻值可随压力大小而变化的电阻器)、显示体重的仪表G(实质是理想电流表).设踏板的质量可忽略不计,已知理想电流表的量程为3 A,电源电动势为12 V,内阻为2 Ω,电阻R 随压力变化的函数式为R=30-0.02F(F 和R 的单位分别是N 和Ω).下列说法正确是( )A.该秤能测量的最大体重是1400 NB.该秤能测量的最大体重是1300 NC.该秤零刻度线(即踏板空载时的刻度线)应标在电流表G 刻度盘0.375 A 处D.该秤零刻度线(即踏板空载时的刻度线)应标在电流表刻度盘0.400 A 处【答案】AC4.温度传感器是对温度敏感的元件,它将感受到的温度信号转变成测量的量(一般是电学量),从而直接反映出其变化.某种材料的R-t 图线如下图甲所示.(1)它能否作为温度传感器的感应元件?(2)把这种材料制成的电阻和一个电热器串联,如图乙,可达到何种自动控制效果?【解析】温度升高或降低导致R 阻值发生变化,使电路中电流发生变化,导致电热器上的电压发生改变,因此可以起到控制效果.【答案】(1)能(2)可达到使电热器保持一定温度的效果5.为了节能和环保,一些公共场所使用光控开关控制照明系统.光控开关可采用光敏电阻来控制,光敏电阻是阻值随着光的照度而发生变化的元件(照度可以反映光的强弱,光越强照度越大,照度单在不同照度下的阻值如表:位为lx).某光敏电阻RP照度(lx)0.20.40.60.8 1.0 1.2电阻(kΩ)754028232018(1)根据表中数据,请在给定的坐标系中描绘出阻值随照度变化的曲线,并说明阻值随照度变化的特点.(2)如图所示,当1、2 两端所加电压上升至2 V 时,控制开关自动启动照明系统.请利用下列器材设计一个简单电路,给1、2 两端提供电压,要求当天色渐暗照度降低至 1.0(lx)时启动照明系统,在虚线框内完成电路原理图.(不考虑控制开关对所设计电路的影响)提供的器材如下:(符号,阻值见上表);光敏电阻RP直流电源E(电动势3 V,内阻不计);定值电阻:R=10 kΩ,R=20 kΩ,R=40 kΩ(限选其中之一并在图中标出);开关S 及导线若干.【解析】(1)描绘图象应注意:各点均匀分布在图线两侧,且图线应用平滑曲线,而不能成为各点的连线.图线为曲线且非线性变化.(2)根据串联电阻的分压关系,E =3 V ,当照度降低至 1.0(lx)时,其电压升至 2 V ,由图线知,此时光敏电阻 R P =20 k Ω,U R P =2 V ,串联电阻U =1 V ,由UR P R P R P R U R = R =2 得:R = 2 =10 k Ω,故选定值电阻 R .【答案】 (1)光敏电阻的阻值随光照度变化的曲线如图所示:光敏电阻的阻值随光照度变化特点:光敏电阻的阻值随光照度的增大非线性减小.(2)电路原理图:6.3 实验:传感器的应用课时作业基础达标1.如图所示为一个逻辑电平检测电路,A与被测点相连,则( )A.A 为低电平,LED 发光B.A 为高电平,LED 发光C.A 为低电平,LED 不发光D.A 为高电平,LED 不发光【解析】 A 为低电平时,Y为高电平,LED 的电压小,不发光;A 为高电平时,Y 为低电平,LED 的电压大,发光,故B、C 正确.【答案】BC2.如图所示的光控电路用发光二极管LED 模拟路灯,R为光敏电G阻.A 为斯密特触发器输入端,在天黑时路灯(发光二极管)会点亮.下列说法正确的是( )A.天黑时,Y 处于高电平B.天黑时,Y 处于低电平C.当R调大时,天更暗时,灯(发光二极管)点亮D.当R调大时,天较亮时,灯(发光二极管)就能点亮阻值增大到一定值,斯密特触发器输【解析】天黑时,RG入端A 的电压上升到某个值,输出端Y 突然由高电平跳到低电平;R 调大电阻更大时,路灯才点亮,时,A 端电压降低,只有天更暗时,RG故B、C 正确.【答案】BC3.微波炉将食物加热到设定的温度时会“哞哞”地叫,在这一报警电路中肯定有传感元件.【解析】微波炉中有温度报警器,而组成温度报警器的主要元件就是热敏电阻传感元件.【答案】热敏电阻4.。
2006~2007学年度第一学期
小学三年级英语期中练习卷学校班别姓名评分
Part 1 听力部分
一、听先字母、单词和句子。
(10分)
()1. A. J B. A C. K
()2. A. B B. C C. D
()3. A. FL B. FH C. LH
()4. A. book B. cook C. desk
()5. A. father B. brother C. mother
()6. A. fish B. friend C. family
()7. A. cat B. hat C .ant
()8. A. sing B. swim C. sister
()9. A. What’s you name? B. What’s her name?
C. What his name?
()10. A. It’s an desk. B. It’s an eraser.
C. It’s a desk.
三、听问句,选答语。
(10分)
()1. A. My name Jenny. B. I’m Jenny.
C. Your name’ Jenny.
()2. A. She’s my mother. B. He’s my mother.
C. She’s my father.
()3. A. Yes, I can’t. B. No, I can.
C. Yes, I can.
()4. A. It’s an table. B. It’s a eraser.
C. It’s a pencil.
()5. A. How are you. B. I’m fine, thanks.
C. Hello.
()6. A. Nice to meet you, too. B. I’m Gogo.
C. Good mo r ning.
()7. A. Goodbye. B. Good afte r noon
C. Good mo r ning.
()8. A. He’s my brother. B. He’s my sister.
C. She’s my mother.
()9. A. Yes, I can’t. B. No , I can. C. No, I can’t.
()10. A. I’m +自己的名字. B. It’s a book.
C. He’s my father.
四、听录音,给下列图标号,如1,2,3……(5分)
五、听录音,填补句子。
(10分)
1. Who’s ? my .
2. What’s name ? Jenny.
3. you ? No, I .
4.What’s ? It’s a .
Part 2 笔试部分
一、用正确的书写格式抄写下列句子和单词。
(10分)
1.Nice to meet you. goodbye hello pencil
2.She’s my mother. eraser family sister
二、选择填空。
(10分)
()1. 当有人对你说“Hello.”时,你应怎样回答?
A.Goodbye. B. Hi. C. Nice to meet you.
()2.你想知道某个人的名字,你应该怎样问他或她?
A.What’ you name? B. What’ your name?
C. What’s name?
()3.当有人对你说“Goodbye.”时,你应怎样回答?
A.Bye. B. Hello. C. Hi.
()4.如果有个外国人对你说“Nice to meet you.”你应回答?
A.Hello. B. Goodbye. C. Nice to meet you, too.
()5.当你想知道离你很近的某样东西是什么时,你应该问:
A.What’s that? B. What’ this? C. What’ your name?
()6. What’s this ? It’book.
A. a
B. an
C.不需要填写
( )7. Who ’s ? my mother.
A. he , He ’s
B. she, she ’s
C. she, She ’s
( )8.Who ’s ? my father.
A. she, He ’s
B. she, He ’s
C. he, He ’s
( )9.别人和你说“ How are you ”时,你应该说:
A .I ’m fine, thanks. B. Hello. C. Goodbye.
( )10.What ’ this ? It ’ apple.
A. a
B. an
C.不用填
三、填补单词,并选出中文意思。
(10分)
( )1. b k A. 男孩 B. 书本 C.熊猫
( )2. g dbye A. 你好 B. 再见 C.名字
( )3. ister A.姐妹 B. 兄弟 C.妈妈
( )4. famil A.爸爸 B. 朋友 C.家庭
( )5. dr A. 唱歌 B. 画画 C.烹调
四、看图填空。
(10分)
1. this ?
a .
2.Can you ?
, .
3.Who ’s ?
my .
五、读一读,找一找,圈出你会的单词。
(10分)
pencil book
mothe
draw
六.按顺序默写A a ~Q q (大小写)。
(10分)。