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怀柔二模语文答案

发布时间:2020-12-14 02:47:57

㈠ 2012北京市语文怀柔初三二模

你可以到新课标第一网上去查,那里一查就知道。

㈡ (2014怀柔区二模)如图,点E、F分别是AD上的两点,AB∥CD,AB=CD,AF=DE.求证:CE=BF

解答:证明:∵如图,AB∥CD,
∴∠A=∠D,
在△ABF和△DCE中,

㈢ (2014怀柔区二模)某校实行学案式教学,需印制若干份数学学案,印刷厂有甲、乙两种收费方式,除按印数

(1)设甲抄种收费的函袭数表达式y1=kx+b,乙种收费的函数表达式是y2=k1x,
把(0,6),(100,16)代入y1=kx+b,得

㈣ (2012怀柔区二模)如图所示,在盛有水的圆筒形容器内,铁块甲放在木块乙上,木块乙浮在水面上,木块乙

A、由题意可知在两中情况下中都是处于漂浮状态,所以受到的浮力相等,等于它们的总重力.专属
由阿基米德原理知道它们排开水的体积相同,则水面距容器底部的高度不变,故A错误;
B、由液体压强公式p=ρgh可知,水对容器底部的压强不变,故B错误;
C、由p=

F
S
可知容器对桌面的压力不变,C正确.
D、铁块甲放在木块乙上,木块乙浮在水面上,此时甲不受浮力,现将甲取下并用细线系在乙的下方,放入水中静止后(甲不触底),甲受到浮力;
由在两中情况下中都是处于漂浮状态,所以受到的浮力相等,
可知,当铁块还没有浸入水中,和铁块全部浸没在水中相比较,所以木块乙受到水的浮力减小,那么木块乙减小的浮力与铁块甲受到的浮力大小相等.故选项D正确.
故选CD.

㈤ 求2015英语怀柔二模的答案

一、听对话,选择与对话内容相符的图片。(共4分,每小题1分)

1. C 2. A 3. B 4. A

二、听对话或独白,选择最佳选项。(共12分,每小题1分)

5. A 6. C7. B8. C9. A10. C 11. B 12.C 13.A 14. A15. C16. C

三、听对话,记录关键信息。(共10分,每小题1分)

17. Japanese 18. hair 19. turned 20. KBC 21. 15766

四、单选。(13分)22. B 23.C 24. A 25.C 26.B 27.D

28.C 29. B 30. D 31.C 32.C 33.D 34.A

五、完形。(12分)35. C 36. B 37.D 38.C 39. D 40. A

41. A42. D 43.C 44.B 45.A 46.C

六、阅读(26分)(A) 47.A 48.C 49B

(B) 50. C 51.B 52. D

(C) 53.A 54.C 55.B

(D) 56.B 57. D 58. C 59. D

七、阅读短文,还原句子。(8分)

60. B 61. A 62. E 63. C

八、阅读短文,根据短文内容回答问题。(10分)

64. Yes, it is.

65. It raises money and helps millions of young people around the
world.

66. About 300,000 children

67. Cards, T-shirts, teddy bears

68. What UNICEF is, what four main UNICEF projects are and what you can do
to help. (缺一项扣1分)

九、完成句子 (10分)

69. Why not/ Why don't you

70. pass it to me

71. as much as possible

72. will try my best

73. is happy/glad to see, are busy studying/learning

十、文段表达(15分)

Hi, Mike,

I am glad to hear from you. I like go to the beaches. They are not only
wide but also beautiful. I like traveling there because I can swim in the sea
and walk on the beaches. I like lying in the sand and it makes me relaxed. It's
exciting to make sand castle on the beaches. I really love to go to the
beaches.

北京市中考作文评分标准:

第一档:(15-13分)

完全符合题目要求,表达思想清楚,内容丰富。使用多种语法结构和丰富的词汇,语言通顺,语意连贯,具有逻辑性。允许个别语言错误。

第二档:(12-9分)

符合题目要求,表达思想基本清楚,内容完整。语法结构和词汇基本满足文章需要。语言基本通顺,语意基本连贯。有少量语言错误,但

不影响整体理解。

第三档:(8-5分)

部分内容符合题目要求,表达思想不清楚,内容不完整。语法结构和词汇错误较多,语言不通顺,影响整体理解。

第四档:(4-0分)

与题目有关的内容不多,不能表达出自己的思想。只是简单拼凑提示内容,所写内容难以理解。

英语听力测试现在开始

一、 听对话,从下面各题所给的A、B、C三幅图片中选出与对话内容相符的

图片。每段对话你将听两遍。

1. W: Jack, can you see a pig on the farm? M: Yes, I can.

2. W: Sam, what is your hobby? M: Fishing.

3. W: John, May I use your ruler? M: Yes, here you are.[来源:学科网]

4. W: What about the weather tomorrow? M: It will be rainy.

二、听对话或独白,根据对话或独白的内容,从下面各题所给的A、B、C三

个选项中选择最佳选项。每段对话或独白你将听两遍。

请听一段对话,完成第5至第6小题。

W: Excuse me, is there a bookstore around here?

M: Yes. There is one on Tree Road. It's between the parking lot and the

supermarket.

W: How far is it from here?

M: About thirty minutes' walk. You can take the No. 14 bus there.

W: Thanks for help.

M: You're welcome.

请听一段对话,完成第7至第8小题。

W: Let's play computer games!

M: That sounds interesting, but I don't have a computer.

W: Well, do you have volleyball?

M: Yes.

W: Then let's play volleyball.

M: Oh, volleyball is so difficult.

W: Ok, let's watch TV.

M: That sounds boring. Let's play soccer. Do you have a soccer ball?

W: No, I don't.

M: Oh. Well, do you have a basketball?

W: Yes, I do. Let's play basketball.

M: That sounds fun.

请听一段对话,完成第9至第10小题。

M: Tina, when did you come to Beijing?

W: I came to Beijing in 2008. I studied in a language school.

M: Did you know any Chinese before you came to China?

W: No, I didn't know a word of Chinese.

M: So, what did you do in your Chinese class.

W: Oh, we did lots of listening, speaking and writing exercises but
sometimes we

played games too. And we watched interesting TV programs.

M: What did you like best?

W: I liked watching TV programs.

M: What did you think of your teacher?

W: My teacher was pretty good.

请听一段对话,完成第11至第13小题。

W: Hello, Jack.

M: Hello, Linda. You are all here. What are you doing here?

W: We are planning for a good-bye party be cause the 3-year middle school
life will be over.

M: That sounds good .Can I join the party?

W: Sure. Everyone in our class is welcome.

M: Great! Is there anything I can do to help?

W: Let me see. Oh, do you have a camera?

M: Yes, I do. I have a digital camera.

W: We want to take some photos. They may remind us of the time we had in
middle school in the future. Would you mind bringing it to the party?

M: Not at all. I'm sure to bring it to the party. Anything else?

W: Well, would you like to get some fruit and snacks for the party with
me?

M: Yes, I'd love to. Let's go.

请听一段独白,完成第14至第16小题。

Do you learn from your mistakes? I hope so. But have you ever made the same
mistake twice? I have. Sometimes I make the same mistake three or four times!
Sometimes, good things happen because of mistakes. Once I got on the wrong
train. That was a big mistake .But on that train I saw a good friend. I was so
happy that I made that mistake! Another time I broke a surprise .My mother
planned a surprise party for my father. She told me it was a secret. But I was
just a little boy and I couldn't keep the secret. I told my father about the
party. At first, my mother was mad at me. But then my father said he was happy
he knew about it. He said he didn't like surprises.

三、听对话,记录关键信息。对话你将听两遍。请根据所听到的对话内容和提示词语,将所缺的关键信息填写在答题卡的相应位置上。

(A policewoman is asking Bob something about a traffic accident.)

W: Excuse me, sir. Were you just right there when the accident
happened?

M: Yes, I was right there. I saw it all.

W: Can you say something about the car?

M: Certainly. It was a big yellow Car. The driver and another four people
were in it. I'm sure it wasn't s a Japanese car.

W: Say something about the driver, please.

M: Oh, yes. He was in a suit. And he was a tall man with dark hair and dark
glasses.

W: Can you tell me something more?

M: Yes, it was terrible. The car was driving too fast. It ran into a truck
when it turned around.

W: Did you notice the car number? [来源:学§科§网Z§X§X§K]

M: Yes. K-B-C.

W: OK. K-B-C, go on please.

M: En, 15766

W: All right. 15766. So the car number is KBC 15766.

M: Yes.

W: All right. Please sign your name. Thank you.

M: Ok. You're welcome.

㈥ 求文档: 2010北京怀柔二模物理试卷及答案

怀柔区2009—2010学年度初中物理二模试卷
学校_______________ 班级________________ 姓名_________________



知 1.本试卷共9页,共五道大题,40道小题,满分100分。考试时间120分钟。
2.在试卷上准确填写学校名称、姓名和准考证号。
3.试题答案一律填或书写在试卷上。
4.作图题用2B铅笔作答,其他试题用黑色字迹签字笔作答。

题 号 一 二 三 四 五 总 分
分 数
阅 卷 人
复 查 人
选择题答题纸
题号 1 2 3 4 5 6 7 8
答案
题号 9 10 11 12 13 14 15 16
答案

一、下列各小题均有四个选项,其中只有一个符合题意,请将正确选项前的字母填到答题纸上。(共24分,每小题2分)
1.下列物理量中,以科学家牛顿的名字作为单位的物理量是
A.压强 B.功 C.力 D.功率
2.图1所示的四种现象中,由于光的反射形成的是

3.下列用品中,通常情况下属于导体的是
A.塑料直尺 B.铜线 C.橡皮 D.空气
4.如图2所示的四种做法中,符合安全用电要求的是

5.下列四种现象中,其物态变化属于吸热过程的是
A.霜的形成 B.湖水结冰 C.雾的形成 D.樟脑丸变小
6.如图3所示,关于热现象的有关实验,下列说法正确的是
A.在汽油机的做功冲程中,机械能转化为内能
B.水蒸气将瓶塞顶出,说明水蒸气对瓶塞做功,水蒸气的内能增大
C.墨水在热水中比冷水中扩散快,说明分子在不停的做无规则运动
D.两个铅柱压紧后可以吊起钩码,说明分子间存在引力

7.如图4中,能够测出大气压值的实验是

8.连通器在日常生产和生活中有着广泛的应用,在图5所举的事例中,不是利用连通器原
理工作的是

9.如图6所示的四种用电器中,利用电流热效应工作的是

10. 人类正面临能源危机,为选用节能交通信号灯,实验室通过实验发现表1中LED灯和白炽灯在正常工作时,光照强度相同,根据表1中的数据.判断下列说法正确的是
A.LED灯正常工作时的电流是2A
B. 每天正常工作10h,使用一个LED
灯比使用一个白炽灯可节约电能为0.88kW•h,
C. 白炽灯工作时,其消耗的电功率总是大于LED灯
D.LED灯的电阻值大于白炽灯的电阻值
11.汽车驾驶室的显示板有一个小灯,司机能通过这个小灯知道四个车门是否关好:当小灯亮起,说明有车门没有关好,汽车不能安全行驶;当小灯熄灭,说明四个车门全部关好,可以行驶。每个车门可以看做一个“开关”,车门关好相当于“断开”闭合,车门没关好相当于“闭合”断开。小利根据如上所述设计了图5所示的四个电路图,图中的R相当于保护电阻,灯L相当于显示板上的小灯,能正确告知司机车门是否关好的电路图是

12.如图8所示,在盛有水的圆柱形容器内,体积为100cm3实心物块甲放在实心木块乙上,木块乙漂浮在水面上,木块受的浮力为F1,水对容器底部的压强为p1;现将甲取下并浸没水中,静止时,容器对甲的支持力为N,木块静止时受的浮力为F2,水对容器底部的压强为p2,水面深度变化5cm。已知木块乙的质量为400g,圆柱形容器的底面积为200cm2(g取10N/kg),则下列说法中正确的是
A.p1<p2
B.容器对甲的支持力N为2N
C.甲的密度为2.1×103kg/m3
D.F1与F2的差值为11N
二、多项选择题(下列各小题均有四个选项,其中符合题意的选项均多于一个。本大题共
12分,每小题3分。每小题选项全选对的得3分,选对但不全的得2分,有错选的不得分)
13.下列说法中正确的是
A.闭合电路的一部分导体在磁场中运动时,导体中就一定会产生感应电流
B.同名磁极相互排斥,异名磁极相互吸引
C.一个可以正确指南北小磁针放在无外界磁场干扰的教室中,静止时,指南的一端为南极
D.电磁铁磁性强弱与线圈匝数多少有关
14.小利根据表2中的数据,得出以下四个结论,其中正确的是

A.体积相等的实心铜块和铝块,铜块的质量较小
B.质量相等的干泥土和水,降低相同的温度,水放出的热量较多
C.可以用铝制作的器皿来熔化铜
D.体积相等的实心铜块和铝块,降低相同的温度,铜块放出的热量较多
15.小刚同学背着质量为6kg的书包从一楼匀速走上三楼,用了2分钟,每层楼高3米(g取10N/kg),则下列说法中正确的是
A.小刚书包的重力为60N
B.小刚对书包做的功为540焦
C.小刚对书包做的功为360焦
D.小刚这段时间内做功的功率为3W
16.如图9所示电路,电源两端电压不变,R l=30Ω。当开关S1、S2都断开或都闭合时,电压表示数之比为3:8,R2消耗的最小功率和最大功率之比为1: 4,R3的最小功率为0.9W。则下列说法正确的是
A. 电阻R 3=10Ω
B. 电源两端电压U= 12V
C.电路消耗的最大总功率P=91.2W
D.开关S1、S2都闭合时,电流表的示数I= 1A
三、填空题:请将答案填到横线上。(共14分,每空2分)
17._____是一个物体对另一个物体的作用。
18.凹透镜对光线起_______作用。(选填“会聚”或“发散”)。
19.乐音的三要素是音色、音调和 。
20.我国家庭电路的电压为______V。
21.一个重4N的物体从空中自由竖直下落,受到竖直向上的空气阻力为3N,则此物体的合力为_____N。
22.定值电阻R1=30Ω,R2=50Ω,串联在电压为16V的稳压电源上,如下图10所示,闭合开关S,通电1min,则电流通过电阻R2做的功为______J。

23.如图11所示,杠杆在水平位置处于平衡状态,细绳AC沿竖直方向并系于正方体上表
面的中央。若上移玻璃杯使小球浸没水中(不接触容器),杠杆AB仍在水平位置平衡。在杠杆
所处的前后两个状态中,正方体对水平地面的压强变化了400Pa。已知正方体的边长为10cm,
小球的体积是2×10-4m3,则:AO:OB为 。(g取10N/kg)
四、实验与探究题: 请在各小题对应位置上作答。(共34分, 24至27、30至34、36题各2分,28、29、35题各3分,37题5分)
24.如图12所示,AO为入射光线,ON为法线。请画出入射光线AO的反射光线。
25.重10N的木块A静止在斜面上,请在图13中画出A受到重力的示意图。

26.请在图14中画出力F对支点O的力臂L。
27.图15中温度计的示数为________℃。

28.如图16所示,用伏安法测小灯泡的电阻。

(1)请根据实验要求完成实物电路图16的连接。
(2)闭合开关,调节滑动变阻器.当小灯泡发光时,电流表、电压表的示数如图17所示,小灯泡两端的电压为_________V,小灯泡此时的电阻为________Ω。
29.如图18所示,在测定滑轮组机械效率的实验中,小龙测出并记录如表3所示的实验数据,请根据实验数据组装滑轮组和计算滑轮组机械效率。
重物/N 重物上升
的高度/cm 弹簧测力计
的示数/N 弹簧测力计
移动的距离/cm 机械效率
4.8 10 2 30

30.小刚探究凸透镜成像规律的实验装置如图19所示,凸透镜固定在光具座上,位于50cm刻线处,光屏和点燃的蜡烛位于凸透镜两侧。小刚将蜡烛移至30cm刻度线处,移动光屏,直到光屏上出现了烛焰清晰倒立、放大的实像,则该凸透镜的焦距 10cm(选填:“大于”或“小于”)。此时可以是 的成像原理图。(选填“照相机”、 “幻灯机”或“放大镜”)

31.小明同学利用如图20所示的装置做“观察水的沸腾”实验:
(1) 他观察到温度计的示数记录如表4所示,此时水的沸点为 ℃。
(2) 在小明的实验中,水沸腾的温度低于100℃,你认为主要原因是当时的气压 标准大气压。(选填“高于”、 “等于”或“低于”)

32.某同学在探究并联电路中电流的特点时,电源电压不变(定值电阻的阻值不受温度影响)。闭合开关S,通过R2的电流用I2表示,记录电流表A的示数I、通过R1的电流I1的实验数据如表5所示,请根据表5中的数据,归纳出在该并联电路中电流I与I1的关系式 。

I1/A 0.1 0.2 0.25 0.3 0.35 0.4
I/A 0.3 0.4 0.45 0.5 0.55 0.6

33.图22是未完成的恒温箱电路图,其中R是用于加热的电热器,M是用于散热、换气的
吹风机,S是温控开关。箱内温度高于设定温度时,S自动闭合,吹风机工作,电热器R不
工作;箱内温度低于设定温度时,S自动断开,吹风机不工作,电热器R工作,以保证箱内
温度无明显变化。请根据要求把c连入电路,完成电路图的连接。

34.图23是表示甲、乙两种物质“质量与体积关系”的图像。由图可知,物质________的
密度比较大。用这两种物质分别做成A、B两个质量相等的实心正方体,把它们放在水平地
面上,A、B两物体对水平地面的压强之比pA∶pB=________。
35.小明想试着用学过的知识测量盐水的密度。他找来一根粗细均匀的木棒,在木棒表面均匀地涂上一层蜡,小明又找来一颗钉子、一个足够深的盛液容器和一把刻度尺。请你按照小明的实验思路,将实验步骤补充完整。
(1) 在木棒的下端钉入钉子,制成“密度计”,用刻度尺测出其长度用L表示;
(2) 将“密度计”放入盛水的容器中,使其竖直漂浮在水中,用刻度尺测出“密度计”露出水面的高度用h1表示;
(3) 将“密度计”放入盛盐水的容器中,使其

(4) 已知水的密度为ρ水,利用上述测量出的物理量和已知量计算盐水密度的表达式
ρ 盐=
36.小刚的妹妹拿着平面镜梳头时,发现自己眼睛距离平面镜近时,平面镜中的“眼睛”大,
自己眼睛距离平面镜远时,平面镜中的“眼睛”小,她得出“平面镜中‘眼睛’的大小与自
己的眼睛距离平面镜的距离远近有关”。他把自己的发现告诉了上初三小刚,小刚告诉妹妹
说她的观点是错的,并找来两块相同的橡皮A、B、一块薄玻璃板,在水平写字台做了实验,
纠正了妹妹的观点,要求只利用上述器材,请你写出小刚主要实验步骤和相应的实验现象。

37.实验桌上有如下器材:稳压电源(6V)一个、电流表(量程0-0.6A)和电压表(量程0-15V)各一只、开关、滑动变阻器(铭牌“50Ω1A”)、阻值为5Ω、6Ω、8Ω、12Ω、15Ω、20Ω的定值电阻(不考虑温度对电阻的影响)各一个和导线若干。请你设计一个实验证明:“当电压保持不变时,电阻消耗的电功率与该电阻阻值成反比”。要求:
(1)画出实验电路图:
(2)简明陈述实验步骤:
(3)请根据你的实验步骤画出实验数据记录表:

五、计算题:请将答案写到各小题对应位置上。(共16分, 38题3分,39题6分,40题7分)
解题要求:写出依据的主要公式或变形公式并代入数据;凡有数字运算的题目,运算过程和结果都要写明单位。
38.已知煤油的比热容为2.1×103J/(kg∙℃)。质量为10kg的煤油,在温度从60℃降低到15℃
的过程中,放出多少焦的热量?

39.某工人通过如图24所示装置提升重物,甲、乙为定滑轮(质量不计),丙为动滑轮,连接杠杆的绳子、人手中的绳子都竖直。当工人对绳子施加竖直的拉力F1时,工人对水平地面的压力为200N,杠杆刚好在水平位置平衡,重物对水平地面的压强为0.2×104pa。已知重物的底面积为0.5m2,AO=4BO,工人的质量70kg,动滑轮的质量10kg,(不计绳重、滑轮与轴的摩擦、杠杆的重力,g取10N/kg)求:
(1)F1为多少牛? (2)重物的重力为多少牛?

40.如图24所示电路,电源两端电压保持不变,滑动变阻器的最大电阻值为R1,R2为定值
电阻,灯泡L标有“12V 9W”字样(不计温度对电阻的影响)。当开关都闭合时,灯泡L
恰能正常发光。将开关S1、S3断开,S2闭合后,改变滑动变阻器的滑片P的位置,使滑动
变阻器连入电路的电阻分别为0.25R1和R1,这两种情况下,滑动变阻器消耗的电功率相等,
当滑动变阻器连入电路的电阻为R1时,R2消耗的电功率为P2。当开关S1、S2断开,S3闭合,
滑片P在变阻器的左端时,灯泡L的实际电功率为额定电功率的 。求:
(1)灯泡正常发光时电流表的示数IA为多少安?
(2)滑动变阻器的最大电阻值R1为多少欧?
(3)P2为多少瓦?
(4)电路在以上的几个状态中,功率最大时应为多少瓦?

怀柔区2009—2010学年度初中物理二模试卷
物理试题答案及评分标准
注:学生答题过程中,所有单位写字母和汉字都算对。
一、 单选题(每题2分,共24分)
1 2 3 4 5 6 7 8 9
C B B A D D B D A
10 11 12 13 14 15 16
B C D BCD BD AC AC
二、 多选题(共12分,每小题3分。选对但不全的该小题得2分,不选、错选该小题不得分。)

三、填空题(每空2分,共14分)

17 力 18 发散
19 响度 20 220
21 1 22 120
23 1:2

四、作图和实验题(共34分)
24. 25. 26.

27.18
28.(1) (2)2.4 10 29. 80℅(2分)

30.(1)大于 (2)幻灯机 31.(1)96 (2)低于
32.I= I1+0.2A

33.

34.甲 4/1
35.(1)竖直漂浮在盐水中,用刻度尺测出密度计露出盐水面的高度用h2表示
(2) ρ水 (L-h1)/ (L-h2)
36. 实验步骤:
(1)将橡皮A和薄玻璃板平面镜竖直立到水平写字台上,通过薄玻璃板观察橡皮A所成的像,使橡皮B与橡皮A的像重合。(1分)
(2)将橡皮A靠近薄玻璃板平面镜,通过薄玻璃板观察橡皮A所成的像,使橡皮B与橡皮A的像再次重合。(1分)
37.(1)实验电路图:(1分)

(2)实验设计步骤:
①如图所示连接电路,将R1的数据记录在表格中。
②闭合开关,用调好的电流表测出通过R1的电流I1的数据,用调好的电压表测出R1两端电压U的数据,并记录在表格中。(1分)
③断开开关,将定值电阻R1换为R2,闭合开关,调整滑动变阻器的阻值,使得定值电阻R2两端的电压仍为U,读出R2和通过R2的电流I的数据,并记录在表格中。
④仿照③再做4次,分别读出R3、R4、R5、R6和通过R3、R4、R5、R6的电流I3、I4、I5、I6的数据,并记录在表格中。(1分)
⑤根据P=UI分别计算出定值电阻的功率P1、P2、P3、P4、P5、P6,并记录在表格中。(1分)
或:
①如图所示连接电路,每个定值电阻用R表示,通过R的电流用I表示,R两端的电压用U表示,将R的数据记录在表格中。
②闭合开关,用调好的电流表测出I的数据,用调好的电压表测出U的数据,并分别记录在表格中。(1分)
③断开开关,将定值电阻R1换为R2,闭合开关,调整滑动变阻器的阻值,使得定值电阻R2两端的电压仍为U,读出通过R2的电流I的数据,并记录在表格中。
④仿照③再4次,分别读出I的数据,并记录在表格中。(1分)
⑤每个定值电阻的电功率用P表示,根据P=UI分别计算出每个定值电阻的功率,并记录在
表格中。
(1分)
(3)画出实验数据记录表。(1分)
R/Ω
U/V
I/A
P/W

五、计算题(共16分, 38题3分,39题6分,40题7分)
38.解:Q放=cm(t0-t) ……(1分)
=4.2×103J/(kg•℃)×10kg ×(60-15)℃ ……(1分)
= 1.89×106J ……(1分)
39.解:

……………(1分)

G人=70kg×10N/ kg=700N
G动=10kg×10N/ kg=100N
F支=0.2×104pa×0.5m2=1000N
人 700N = F1′+ F′ ①
轮 F1= 1/2(FA+100N) ②
杆 FA′×AB= F拉′×OB ③
物 GA=1000N + F拉 ④
∵F′=F压=200N由①得
∴F1′=500N ∴F1=500N ……………(2分)
入②得FA=900N ……又∵AO=4BO………………………………………………(1分)
代入③得F拉′=2700N ………………………………(1分)
代入④得GA=3700N ………………………………(1分)

40.解:开关都闭合时,等效电路如图甲所示;S1、S3断开,S2闭合,P位于0.25R1和R1时,等效电路如图乙、丙所示;S1、S2断开,S3闭合,P在左端,等效电路如图丁所示。

………………(1分)
(1)在甲图中,因为小灯泡正常发光,所以电源电压为12V
IA= = =0.75A… ………(2分)
(2)RL= = =16Ω
在乙、丙图中
P1=P1′
I120.25R1=I22 R1 解得: =
U=U
I1(0.25R1+R2)=I2(R2+R1)
2R2 = R1 …………………(1分)

在乙、丙图中
PL= Pe
= ×9W ∵RL=16Ω ∴UL=3V ∴U1=9V
= ∵RL=16Ω ∴R1=48Ω ∴R2=24Ω……(1分)
(3)在丙图中I2= = = A
P2=I22R2=( A)2×24Ω= W ……(1分)
(4)在甲图中:
P2′=
P=Pe+ P2′=9W+6W=15W ……(1分)

(注:以上各题答案仅供参考,其他答案只要符合题意均给分。如有不妥之处请申请后更正)

㈦ (2014怀柔区二模)如图所示,电源两端电压保持不变.当开关S1闭合、S2断开,滑动变阻器的滑片P位于最右

当开关S1闭合、S2断开,滑动变阻器的滑片P位于最右端时,等效电路如图甲所示:专
当开关S1、S2都闭属合,滑动变阻器接入电路中的电阻为RA时,等效电路如图乙所示:
2

㈧ (2011怀柔区二模)如图所示,电源两端电压不变,灯L的电阻不随温度变化.断开开关S,先将滑动变阻器R1

断开开关S,滑动变阻器R1的滑片P移至b端,R1和L串联,电流表的示数为干路版电流I1=

U1
RL
;电压表的示数为L两端的电压U1,R1消耗的功率为P1,将滑片P移至变阻器的a端,电压表的示数为U2,L两端增大的电压就是滑片在b点时,滑动变阻器两端的电压,权P1=(U2-U1)I1
闭合开关后,电流中只有灯泡工作,灯泡两端的电压为电源电压;PL0=U2I2
因为I2=
U2
RL
;又因为I1:I2=U1:U2=2:5;所以PL0=2.5U1I2
所以PL0:P1=2.5U1I2:(U2-U1)I1=2.5U1I2:0.5U1I1=25:2.
故答案为:25:2.

㈨ (2011怀柔区二模)如图所示装置中,杠杆和滑轮的重力及滑轮的摩擦均可忽略不计,杠杆AB可以绕O点在竖直

(1)设放水前后作用在A端绳子的拉力分别为F1′、2′,圆柱体的体积为和密度分别为 V、ρ,则
F1×OB=F1′×OA
F2×OB=F4×OA
由上面两个式子可得

F1′
F2′
=
F1
F2
=3:5 ①
ρVg+3F1′=G=ρVg ②
1
3
ρ水Vg+3F2′=G=ρVg ③
联立①②③得圆柱体的密度ρ=2ρ=2×1.0g/cm3=2g/cm3
(2)水的体积是 V=50cm2×20cm-10cm2×12cm=880cm3
未知液体的体积是 V=50cm2×18cm-10cm2×10cm=800cm3
由于质量相等,ρV=ρV,故未知液体的密度ρ=
ρ水V水
V
=
1g/cm3×880cm3
800cm3
=1.1g/cm3
(3)F3=
OA
OB
×
1
3
(G-F)=2×
1
3
(2×103kg/m3×10N/kg×10cm2×12cm×10-6-1.1×103kg/m3×10N/kg×10cm2×12cm×10-6)=0.72N.
(4)P=ρgh=1.1×103kg/m3×10N/kg×0.18m=1980Pa.
答:(1)圆柱形物体的密度为2g/cm3
(2)未知液体的密度为1.1g/cm3
(3)作用在B端的拉力F3大小为0.72N;
(4)未知液体对圆柱形容器底部的压强为1980Pa.

㈩ 求2015怀柔二模英语答案

一、听对话,选择与对话内容相符的图片。(共4分,每小题1分)

1. C 2. A 3. B 4. A

二、听对话或独白,选择最佳选项。(共12分,每小题1分)

5. A 6. C7. B8. C9. A10. C 11. B 12.C 13.A 14. A15. C16. C

三、听对话,记录关键信息。(共10分,每小题1分)

17. Japanese 18. hair 19. turned 20. KBC 21. 15766

四、单选。(13分)22. B 23.C 24. A 25.C 26.B 27.D

28.C 29. B 30. D 31.C 32.C 33.D 34.A

五、完形。(12分)35. C 36. B 37.D 38.C 39. D 40. A

41. A42. D 43.C 44.B 45.A 46.C

六、阅读(26分)(A) 47.A 48.C 49B

(B) 50. C 51.B 52. D

(C) 53.A 54.C 55.B

(D) 56.B 57. D 58. C 59. D

七、阅读短文,还原句子。(8分)

60. B 61. A 62. E 63. C

八、阅读短文,根据短文内容回答问题。(10分)

64. Yes, it is.

65. It raises money and helps millions of young people around the
world.

66. About 300,000 children

67. Cards, T-shirts, teddy bears

68. What UNICEF is, what four main UNICEF projects are and what you can do
to help. (缺一项扣1分)

九、完成句子 (10分)

69. Why not/ Why don't you

70. pass it to me

71. as much as possible

72. will try my best

73. is happy/glad to see, are busy studying/learning

十、文段表达(15分)

Hi, Mike,

I am glad to hear from you. I like go to the beaches. They are not only
wide but also beautiful. I like traveling there because I can swim in the sea
and walk on the beaches. I like lying in the sand and it makes me relaxed. It's
exciting to make sand castle on the beaches. I really love to go to the
beaches.

北京市中考作文评分标准:

第一档:(15-13分)

完全符合题目要求,表达思想清楚,内容丰富。使用多种语法结构和丰富的词汇,语言通顺,语意连贯,具有逻辑性。允许个别语言错误。

第二档:(12-9分)

符合题目要求,表达思想基本清楚,内容完整。语法结构和词汇基本满足文章需要。语言基本通顺,语意基本连贯。有少量语言错误,但

不影响整体理解。

第三档:(8-5分)

部分内容符合题目要求,表达思想不清楚,内容不完整。语法结构和词汇错误较多,语言不通顺,影响整体理解。

第四档:(4-0分)

与题目有关的内容不多,不能表达出自己的思想。只是简单拼凑提示内容,所写内容难以理解。

听力录音材料:

北京市怀柔区2014年高级中等学校招生模拟考试(一)

英语听力测试现在开始

一、 听对话,从下面各题所给的A、B、C三幅图片中选出与对话内容相符的

图片。每段对话你将听两遍。

1. W: Jack, can you see a pig on the farm? M: Yes, I can.

2. W: Sam, what is your hobby? M: Fishing.

3. W: John, May I use your ruler? M: Yes, here you are.

4. W: What about the weather tomorrow? M: It will be rainy.

二、听对话或独白,根据对话或独白的内容,从下面各题所给的A、B、C三

个选项中选择最佳选项。每段对话或独白你将听两遍。

请听一段对话,完成第5至第6小题。

W: Excuse me, is there a bookstore around here?

M: Yes. There is one on Tree Road. It's between the parking lot and the

supermarket.

W: How far is it from here?

M: About thirty minutes' walk. You can take the No. 14 bus there.

W: Thanks for help.

M: You're welcome.

请听一段对话,完成第7至第8小题。

W: Let's play computer games!

M: That sounds interesting, but I don't have a computer.

W: Well, do you have volleyball?

M: Yes.

W: Then let's play volleyball.

M: Oh, volleyball is so difficult.

W: Ok, let's watch TV.

M: That sounds boring. Let's play soccer. Do you have a soccer ball?

W: No, I don't.

M: Oh. Well, do you have a basketball?

W: Yes, I do. Let's play basketball.

M: That sounds fun.

请听一段对话,完成第9至第10小题。

M: Tina, when did you come to Beijing?

W: I came to Beijing in 2008. I studied in a language school.

M: Did you know any Chinese before you came to China?

W: No, I didn't know a word of Chinese.

M: So, what did you do in your Chinese class.

W: Oh, we did lots of listening, speaking and writing exercises but
sometimes we

played games too. And we watched interesting TV programs.

M: What did you like best?

W: I liked watching TV programs.

M: What did you think of your teacher?

W: My teacher was pretty good.

请听一段对话,完成第11至第13小题。

W: Hello, Jack.

M: Hello, Linda. You are all here. What are you doing here?

W: We are planning for a good-bye party be cause the 3-year middle school
life will be over.

M: That sounds good .Can I join the party?

W: Sure. Everyone in our class is welcome.

M: Great! Is there anything I can do to help?

W: Let me see. Oh, do you have a camera?

M: Yes, I do. I have a digital camera.

W: We want to take some photos. They may remind us of the time we had in
middle school in the future. Would you mind bringing it to the party?

M: Not at all. I'm sure to bring it to the party. Anything else?

W: Well, would you like to get some fruit and snacks for the party with
me?

M: Yes, I'd love to. Let's go.

请听一段独白,完成第14至第16小题。

Do you learn from your mistakes? I hope so. But have you ever made the same
mistake twice? I have. Sometimes I make the same mistake three or four times!
Sometimes, good things happen because of mistakes. Once I got on the wrong
train. That was a big mistake .But on that train I saw a good friend. I was so
happy that I made that mistake! Another time I broke a surprise .My mother
planned a surprise party for my father. She told me it was a secret. But I was
just a little boy and I couldn't keep the secret. I told my father about the
party. At first, my mother was mad at me. But then my father said he was happy
he knew about it. He said he didn't like surprises.

三、听对话,记录关键信息。对话你将听两遍。请根据所听到的对话内容和提示词语,将所缺的关键信息填写在答题卡的相应位置上。

(A policewoman is asking Bob something about a traffic accident.)

W: Excuse me, sir. Were you just right there when the accident
happened?

M: Yes, I was right there. I saw it all.

W: Can you say something about the car?

M: Certainly. It was a big yellow Car. The driver and another four people
were in it. I'm sure it wasn't s a Japanese car.

W: Say something about the driver, please.

M: Oh, yes. He was in a suit. And he was a tall man with dark hair and dark
glasses.

W: Can you tell me something more?

M: Yes, it was terrible. The car was driving too fast. It ran into a truck
when it turned around.

W: Did you notice the car number?

M: Yes. K-B-C.

W: OK. K-B-C, go on please.

M: En, 15766

W: All right. 15766. So the car number is KBC 15766.

M: Yes.

W: All right. Please sign your name. Thank you.

M: Ok. You're welcome.

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