1、人教版浙江五年级英语上册期中考试卷班级_姓名_Listening part一、听音,选出你所听到的内容。1、 A. strong B. strict C. short2、 A. sweet B. salty C. yummy3、 A. Saturday B. Tuesday C. Thursday4、 A. homework B. housework C. work5、 A. mouth B. mountain C. mouse6、 A. cabbage and fish B. cabbage and tofu C. fish and tomato7、 A. fruit B. from C.
2、frog8、 A. healthy B. yummy C. fresh二、听音,连线。ary young and active Tom tall and strong Linda strict but kindr u funny and shortiss Lin short and thin三、听问句,选答句。 1、 A. Shes pretty, B. She likes watching TV. 2、 A. Yes , they are sweet, B. No, I dont, 3、 A. I like grapes, B. I like green beens, 4、 A.e have
3、 puter and English, B,e often do homework and watch TV,5、 A. Its Sunday, B.Its Saturday,四、听音,补充句子 。 1 I like _, Its _,2. hat do you do _ _ ?3. Is she _ ? No , she is _.4. ho is _ English _?5. I often do _ and _ puter games,五、听短文,判断正误,正的写 T ,错的写 F )( ) 1. iss Brown is tall and thin, ( ) 2. She often
4、reads books and listens tusic, ( ) 3. ur Chinese teacher is r Brown, ( ) 4. iss Brown is our principal, ( ) 5. e like r Brown very much,riting Part一、找出发音不同的单词。1A. peach B. bread C. sheep D. jeans2A. thin B. that C. math D. there3A. our B. mouth C. house D. yellow4A. floor B. frog C. from D. fruit5A.
5、 what B. who C. why D. white二、选择填空。1 Its time _- ? A. to get up B. for get up C. gets up2. hen is _,A. other day B. mothers Day C. onthers Day 3. hat _ you like _ dinner ? A. would to B. do for C. would for4. hat can you _ A. do B. dooes C. have5. hos that young woman? _ my aunt,A. She B.Shes C. Her
6、6. hat do you _ for lunch ? Fish and tofu A. had B.have C. has7. Noodles are my favourite _. A. fruit B. drink C. food8. I like beef and chicken , but I am heavy now. I have to eat more _. A. vegetbales B. mutton C. water9. _ about you ? A. here B. hen C. hat10. The first day of a week is _ A. onday
7、 B. Saturday C. Sunday三、根据所给信息写出单词。1hat do you do on _.( 星期三 ) I often _ _( 读书 )2. e have Chinese , _(美术课) and _(数学课)on mondays.3. I like _( 西红柿) very much. Its my _(最喜欢的)。4I don t like _(葡萄), Theyre _(酸的)。5. He is a university _(学生)。四、连词成句,注意标点符号和大小写。1. day it what today is _2. your is what food fa
8、vourite _3. do on you what Sunday do _4. is English your who teacher _5. have eat I to more vegetables _五、情景对话。John: Hello.hang: Hi, John. _hat are you doing ?John: _hang: Do you want to go to the _John: Sure. _hang: 10:30.John: k,_-hang: Bye,A. See you later. B. Children Center, C. This is hang Pen
9、g. D.I am doing my homework, E.hat time ?六、阅读理解。A bus stop (停) at a small bus-stop (公共汽车站). A man looks out of the window and sees a woman, She is selling (卖) cakes, The man wants to eat a cake , but the woman isnt near here, Its raining and the man doesnt want to go out in the rain, Soon (不久) , the
10、 man sees a boy, The boy is near the window, “Do you know how much the cake is ?” “Twenty fen.” The boy says, The man gives the boy forty fen and asks him to buy two cakes. “ne is for you and one for me,” He says to the boy,After a while (一会儿) , the boy es back, Hes eating a cake. He gives the man t
11、wenty fen and says “Sorry , there is only one cake left (剩下).”根据上面的短文选择正确的答案. 1. here is the man ?A. He is at home, B. He is in a bus. C. He is in a car.2. hats the woman doing ?A. She is eating cakes. B. She is making cakes, C. She is selling cakes.3. How many cakes does the woman have ?A. nly one
12、B. Two, C. any.4. How much are two cakes ?A. Twenty fen, B. Forty fen C. I dont know.5. hats the result (结果) ?A. The man eat a cake, B. The man doesnt eat a cake, C. The boy doesnt eat a cake,听力、答案一、 1. y father is very strict , 2. Amy likes stawberries best , because theyre sweet, 3. I often do spo
13、rts on Thursday, 4. y mother often does housework at home, 5. pen your mouth, 6. hat do you have for lunch ? I have some fish and cabbage, 7. Apple is my favourite fruit, 8. I like eggplant , because it is yummy,BACBA AAB二、ary is a funny and short girl, Shed like some fish and green beens. Tom is ta
14、ll and strong, Hed like some chicken and hamburgers, Linda is short and thin, Shed like some tomatoes and tofu, r u is strict ,but hes kind , Hed like some potatoes and eggplant, iss Lin is young and active, Shed like some mutton and soup,三、 1.hats she like ? 2.Do you like mutton for lunch ? 3.I lik
15、e green beens ,because theyre healty, 4.hat do you do on Saturday ? 5.hat day is it today ? Today is Saturday. hat day is it tomorrow ?ABBBA 四、 1 I like ( pork ), Its (tasty),2. hat do you do ( on ) ( Fridays ) ?3. Is she ( active ) ? No , she is ( quiet ).4. ho is (your) English ( teacher )?5. I of
16、ten do ( sports ) and ( play )puter games,五、 iss Brown is our principal, She is our Chinese teacher, She is tall and thin, She often reads books and plays pingpong,She always play pingpong with us, e like her very much, TFFTT笔试:1.BCDAB2.ACCAB BCACC3.endesdays read books art math tomato favourite gra
17、pes sour student 4. 1).hat day is it today ? 2).hat is your favourite food ? 3).hat do you do on Sunday ?4).ho is your English teacher ?5).I have to eat more vegetbles,5.C D B E A 6.B C A B BA. 家庭电路正常工作时,L2 中的磁通量为零B. 家庭电路中使用的电器增多时,L2 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
18、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,L2 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 S1 后,有电流通过继电器,但 R1 较大,继电器产生的磁场较弱,当 R
19、1 的温度升高,电阻减小,继电器产生的磁场显著增大,S2 被吸下来,小灯泡发光,温度降低,磁性减弱,S2 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
20、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 vR./t2n/p(式中 p 为齿轮的齿数);车速为 vR2Rn/p;行程为 svtvN/n2RN/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v2Rn/p;(3) 小车行程的表达式为 s2RN/p.【答案】(1)车轮的半径R 和齿轮的齿数p(2)v2Rn/p(3)s2RN/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
21、 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mgdB正在增mgd, t 2q加 , t nqC正在减mgdD正在减mgd弱, t 2q弱, t 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:mgqU d qn t1mgdd,解得 t nq ,可见B 选项正确【答案】B 2.、)家用电热灭蚊器中电热部分的主要部件是 P
22、TC 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 t1 至 t2 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 t1 或 t2 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 t1 至t2 的某一值不变,这时候电路处于稳
23、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 ,电阻 R 随压力变化的函数式为 R300.02F(F 和R 的单位分别是N 和)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 1
24、300 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 Rt 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
25、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,照度单位为 lx)某光敏电阻 RP 在不同照度下的阻值如表:照度(lx)0.20.40.60.81.01.2电阻(k)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(
26、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:光敏电阻 RP(符号,阻值见上表);直流电源 E(电动势 3 V,内阻不计);定值电阻:R110 k,R220 k,R340 k(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,E3 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 RP20 k,URP2 V,串联电阻U1 V,由URPRPRPRUR R 2 得:R 2 10
27、 k,故选定值电阻 R1.【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()AA 为低电平,LED 发光BA 为高电平,LED 发光CA 为低电平,LED 不发光DA 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,RG 为光敏电阻
28、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 R1 调大时,天更暗时,灯(发光二极管)点亮D. 当 R1 调大时,天较亮时,灯(发光二极管)就能点亮【解析】天黑时,RG 阻值增大到一定值,斯密特触发器输入端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;R1 调大时,A 端电压降低,只有天更暗时,RG 电阻更大时,路灯才点亮,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.