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沪科技粤教版九年级上册物理电子课本图片版
作为自然科学的带头学科,物理学研究大至宇宙,小至基本粒子等一切物质最基本的运动形式和规律,那么九年级上册物理怎么学习呢?以下是小编准备的一些沪科技粤教版九年级上册物理电子课本,仅供参考。
1电磁铁主要由通电螺线管和铁芯构成。在有电流通过时有磁性,没有电流通过时就失去磁性。
2影响电磁铁磁性强弱的因素。
电磁铁的磁性有无可以可以通过电流的有无来控制,而电磁铁的磁性强弱与电流大小和线圈匝数有关。
3电磁铁的应用
此外还有磁悬浮列车,扬声器(电讯号转化为声讯号),水位自动报警器,温度自动报警器,电铃,起重机。
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2023教科版九年级上册物理电子课本下载
物理学研究大至宇宙,小至基本粒子等一切物质最基本的运动形式和规律,那么关于九年级上册物理电子课本怎么预习呢?以下是小编准备的一些教科版九年级上册物理电子课本,仅供参考。
1.以下物理量是同学们进行估测的数据,你认为数据明显符合实际的是()
A.考场内一盏日光灯正常发光时的电流约为5A
B.家用电风扇的额定功率约为2000W
C.人的正常体温约为37℃
D.220V的电压对人体是安全的
2.下列说法中,错误的是()
A.用酒精来给高温病人降温,利用了酒精蒸发吸热
B.用水来冷却发动机,利用了水的比热容大
C.寒冷的冬天,人们呼出的“白气”是液化后的二氧化碳
D.冬天,搓手使手变暖和,是通过做功的方式来改变物体的内能
3.如图1所示的实例中,符合安全用电要求的是()
4.POS刷卡机的广泛应用给人们的生活带来了便利。POS机的刷卡位置有一个绕有线圈的小铁环制成的检测头(如图2甲所示)。在使用时,将带有磁条的信用卡在POS机指定位置刷一下,检测头的线圈中就会产生变化的电流,POS机便可读出磁条上的信息。图2乙中能反映POS刷卡机读出信息原理的是()
5.如图3所示,关于下列图像的说法中,正确的是()
A.图甲表示导体b的电阻小于导体a的电阻
B.图乙表示白炽灯钨丝的电阻随温度的变化关系
C.图丙表示电阻一定时,其实际电功率与电流平方的关系
D.图丁表示一定质量的水其比热容随温度的变化关系
6.某兴趣小组为了研究电子温控装置,将热敏电阻R1(热敏电阻的阻值随温度的升高而减小)、定值电阻R2以及电压表和电流表连入如图4所示电路,电源电压不变。闭合开关S,当温度升高时,下列说法正确的是()
A.电流表和电压表示数均变小
B.电压表V与电流表A示数之比变小
C.电流表示数变小,电压表示数变大
D.电路消耗的总功率变大
7.轿车的驾驶位和副驾驶位一般都设有安全带提醒电路,若汽车点火开关S未接通,电路不工作。S接通后,只要有人坐在其中一个座位上,座位下对应的动合开关S1或S2受压后接通,安全带指示灯点亮同时铃响(灯与铃工作互不影响),提醒他系上安全带后(即将安全带的插头插入连接插座内),安装在插座内对应的动断开关S1′或S2′断开,安全带指示灯熄灭同时铃不响,图5中的电路设计符合要求的是()
8.如图6所示,电源电压恒为6V不变,电压表的量程为0~3V,电流表的量程为0~0.6A。滑动变阻器的规格为“20ΩlA”,灯泡标有“5V2.5W”字样(不考虑灯丝电阻的变化)。若闭合开关,为了保证电路安全,在移动滑动变阻器滑片过程中,则下列说法中正确的是()
A.滑动变阻器的电阻调节范围是2~20Ω
B.电流表示数的变化范围是0.2A~0.5A
C.电路消耗的总功率的变化范围是1.2W~2.5W
D.灯泡消耗功率的变化范围是0.4W~0.9W
二、填空作图题(每空1分,共14分)
9.白炽灯用久了会发暗,其原因之一是钨丝先升华后_______(填物态变化名称)在灯泡内壁上,影响了玻璃的透光性;原因之二是灯丝变细,电阻变大,在电压不变时,实际功率_____(选填“变大”、“不变”或“变小”)。
10.完全燃烧0.3m3的天然气来加热水箱中的水,放出的热量是_____J;若放出热量的84%被水吸收,则可以将水箱中20kg,11℃的水加热到_____℃【天然气的热值为3.0×107J/m3,水的比热容c水=4.2×103J/(kg?℃),当时气压为一个标准大气压】。
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苏科版九年级上册物理电子课本教材下载
物理学是研究物质世界最基本的结构、最普遍的相互作用、最一般的运动规律及所使用的实验手段和思维方法的自然科学,以下是小编准备的一些苏科版九年级上册物理电子课本,仅供参考。
一、选择题(每小题2分,共28分)
1、将掉在地上的一个苹果捡回到餐桌上的过程中,克服苹果重力所做的功大约是()
A.0.01JB.0.1JC.1JD.10J
2、南极是世界上最冷的地方,常年平均气温是–25℃.如图2所示,一天,企鹅妈妈和小企鹅之间发生了一次有趣的对话,它们的部分说法如下,其中正确得是()
A.小企鹅:妈妈,这么冷,我都没温度了
B.企鹅妈妈:不对,是没有内能
C.小企鹅:冰天雪地的,可能连水蒸气都没有吧
D.企鹅妈妈:呵呵,水蒸气倒肯定有,因为冰是可以升华的呀
3、如右图所示,小明分别用甲、乙两个滑轮把同一袋沙子从地面提到二楼,用甲滑轮所做的总功为W1,机械效率为η1;用乙滑轮所做的总功为W2,机械效率为η2。若不计绳重与摩擦,则()
A.W1=W2,η1=η2B.W1=W2,η1<η2
C.W1η2D.W1>W2,η1<η2
4、由,关于同一物质的比热容c,下列说法正确的是()
A.若吸收的热量增大一倍,则比热容增大一倍
B.若质量增大一倍,则比热容减至一半
C.若加热前后的温度差增大一倍,则比热容减至一半
D.无论质量多大,比热容都一样
5、如图所示,人的前臂可视为杠杆,当曲肘将茶杯向上举起时,下列说法正确的是()
A.前臂是省力杠杆,阻力臂变小B.前臂是省力杠杆,阻力臂变大
C.前臂是费力杠杆,阻力臂变大D.前臂是费力杠杆,阻力臂变小
6、如图的电子体温计通过流过半导体制成的感温头的电流来反映人的体温.这利用了半导体()
A良好的导电特性B良好的绝缘特性
C电阻随温度变化而变化的特性D电阻随光照变化而变化的特性
7、接入同一电路中的两只电阻,若一只电阻的阻值增大,其电路总电阻()
A.增大B.减小C.不变D.无法判定
8、滑动变阻器的铭牌上标有“50Ω1A”字样,下列说法正确的是()
A.该滑动变阻器电阻的变化范围是0~50Ω
B.该滑动变阻器只能接入50Ω的电阻
C.允许通过该滑动变阻器的最小电流是1A
D.允许通过该滑动变阻器的电流只能是1A
9、为保证司乘人员的安全,轿车上设有安全带未系提示系统。当乘客坐在座椅上时,座椅下的开关S1闭合,若未系安全带,则开关S2断开,仪表盘上的指示灯亮起;若系上安全带,则开关S2闭合,指示灯熄灭。下列设计最合理的电路图是()
10、小青在探究“怎样用变阻器改变灯泡的亮度”时,连接的电路如图12所示。闭合开关后,灯泡不亮,她用电压表进行电路故障检测,测试结果如右表所示,则电路中的故障可能是()
A、开关断路B、开关短路C、变阻器断路D、灯泡断路
测试点a、fc、de、f
电压表示数有示数无示数有示数
11、电流看不见、摸不着,判断电路中是否有电流时,我们可通过电路中的灯泡是否发光去确定,这种方法在科学上叫做“转换法”。下面是小红同学在学习中遇到的四个研究实例,其中采取的方法与研究电路中是否有电流方法相同的是:()
A.通过测100张纸的厚度来测1张纸的厚度
B.人们通过研究墨水的扩散现象认识分子的运动情况
C.研究电流与电压、电阻关系时,控制电阻(电压)不变,研究电流与电压(电阻)关系
D.学习电压时,我们可以通过对比水压来认识它
12、电控调光玻璃能根据光照强度自动调节玻璃的透明度,其原理是:光照增强.光敏电阻Rx阻值变小,施加于玻璃两端的电压降低,玻璃透明度下降,反之则玻璃的透明度上升.若电源电压保持不变,R0是定值电阻,则下列电路图中符合要求的是()
A.B.C.D.
13、如图所示,用10N的水平推力推着重为60N的物体沿水平方向做直线运动。若推力对物体做了60J的功,则在这一过程中()
A.物体一定受到10N的摩擦力B.重力做的功一定为360J
C.物体一定运动了lmD.物体一定运动了6m
14、张华同学在探究通过导体的电流与其两端电压的关系时,将记录的实验数据通过整理做出了如图9所示的图像,根据图像,下列说法错误的是()
A.通过导体a的电流与其两端的电压成正比
B.导体a的电阻大于导体b的电阻
C.当在导体b的两端加上1V的电压时,通过导体b的电流为0.1A
D.将a、b两导体串联接到电压为3V的电源上时,通过导体的电流为0.2A
二、填空题(每空1分,共24分)
15、2.6×10-5KV=______________mV;3×108Ω=____________MΩ
16、导体的电阻是导体本身的一种性质,它的大小决定于导体的_________、横截面积和导体种类,还与导体的温度有关.
17、滑动变阻器是靠改变连入电路电阻丝的__________来改变连入电路的电阻的。
18、如图所示是我国第一艘航母“辽宁舰”,其正常行驶的功率约为1.5×108瓦,正常行驶1分钟做的功是___________J,辽宁舰舰载战斗机将配备歼—15机群,当战斗机从甲板上加速升空时,战斗机的动能________(选填“增大”、“减小”或者“不变”下同),重力势能___________,机械能_______________。
19、如图所示茶壶的容积为600mL,用它最多可装水_________kg;若以O为支点提壶把向杯中倒水,则它相当于一个_________杠杆(选填“省力”、“费力”或“等臂”).
20、在图甲中,闭合开关后,给玻璃珠加热到红炽状态,小灯泡________(选填“变亮”、“变暗”)这说明了________________________________.在图乙中,闭合开关后.在给钨丝缓慢加热的过程中,小灯泡_________,(选填“变亮”、“变暗”)原因是钨丝的温度越高,它的电阻___________。
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寒窗苦读,为的就是在考试中展现出自己最好的水平,大家更应该加把劲,努力学习,认真总结知识点,大量做题,从中找出自己的不足。下面是读文网小编为大家带来的关于九年级语文上册期末考试试题,希望会给大家带来帮助。
一、选择题
1、 A 2、B 3、C 4C 5、 C 6、C
二、基础题
7、 示例一:欣赏高山,自然会在高山的巍峨中感悟理想的崇高;示例二:欣赏大树,自然会在大树的伟岸中获得自立的尊严;(2分,要求:句式相同,语意连贯,意对即可)
8、 自古以来文人笔下的秋天,往往是肃杀、冷清,令人伤感凄凉。而在我看来秋天远胜初春。诗人一反常情,表达了对秋天的赞美,抒发了诗人积极乐观的思想情感。
9、 略
10、 【小题1】略
【小题2】第一、二幅漫画画的是早春的树木,第三幅漫画作者画的是冬天的树木,第四幅漫画作者画的是冬天过后的晚春的树木,这就可以看出漫画故事的时间跨度是一年多。
11、【小题1】示例:“尖”由“小”和“大”两部分构成,下大上小,所以是尖。
【小题2】“林”由两个“木”组成,表示树木丛生的意思。
三、诗歌鉴赏
12、【小题1】B 【小题2】C
【小题3】自古以来,写离别的诗作大多情感悲伤、基调低沉,而王勃的这两句诗则全无悲伤之情,写得昂扬乐观,能给朋友安慰和鼓励,这种对待离别的积极态度值得称道。
13、D
四、拓展探究
14、奥斯特洛夫斯基 保尔柯察金
15、斯威夫特、小人国、医生、格列佛每漂流到一个地方,必然去认识那里社会种种形式的政治生活。
五、写作
16、狼心狗肺、狼烟四起、狼子野心、引狼入室、狼贪虎视、豺狼当道、狼烟四起
17、 谛听 暇 胜
六、阅读题
18、 【小题1】“退一步”是一种交际智慧,更是一种人生智慧,它能让你少走许多弯路,更快地到达目的地。
【小题2】通过举例论证,形象生动地论证了退一步能化解政敌间的仇恨,是一种交际智慧,更是一种人生智慧的中心论点,使论证更具有说服力。
【小题3】
示例:忍一时风平浪静,退一步海阔天空。小不忍则乱大谋。海纳百川 有容乃大 壁立千仞无欲则刚
19、 【小题1】A放 B懈怠 C 疲倦 D睁大
【小题2】母亲坐在床上,用被子盖着我的双脚,解开衣服用胸口暖和着我的脊背。
【小题3】儿子为母亲深夜陪读而感动,为自己深夜睡着惭愧而哭(儿子被母亲的做法感动而哭)
七、作文
看过九年级语文上册期末考试试题的还看了:
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初三上学期即将结束,同学们要如何准备呢?接下来是读文网小编为大家带来的关于九年级语文上册期末考试题,希望会对大家有所帮助。
1. A 2. C 3. D 4.A 5.B 6.略。
7、 普通话是我们沟通的桥梁;⑵演讲、辩论会、朗诵会、故事会等活动;⑶
把讲普通话纳入师生综合素质评定的内容(全校师生别把方言带进学校来)
8、全诗抒发了自己辞官离京是的复杂感情,
9、作者以花自喻,意谓自己虽然处境艰难,但忠贞报国之心始终不变;自信其高尚志节更能感召年青一代。
10.发扬光大; 选拔; 远离 ; 彰显
11.C
12.(1)如有作坏事违犯法纪的,或尽忠心做善事的,应该一律交给主管部门判定他们受罚或受赏。
(2)皇上应当广泛听取意见,采纳正确建议,以使先帝的德行能够发扬光大,有志士人的正气得到鼓励传扬.
13亲贤臣,远小人,选贤任能
对于当今的领导干部来讲有非常重要的借鉴意义,
只有选拔有才能的人,善于听取意见,才能更好的为人民服务,为百姓办实事,如果只是一味任人唯亲或量“财”而用,那只会祸国殃民,违法乱纪,被人民所唾骂,成为国家的罪人。
14、大有大的思想、计划和考虑,小有小的算盘和实际生活,让节约的观念和行动细化到生活的每个角落。
15、引出节俭还是吝啬的讨论,提出的论题。
16、举例论证和道理论证
17、应该有这样很细节化的节约意识。例子略。
18、示例:静以修身,俭以养德 忧劳可以兴国,逸豫可以亡身
19、示例:伸出你的手,擦干她的泪(水龙头公益广告)
20. 以求女儿成凤凰时,将有梧桐栖,或者女儿们长大以后,用梧桐木做嫁妆。
21.小时候用梧桐花给我敷伤口;我出生时栽梧桐树;对我婚事的关心。
22.运用了比喻、对比、拟人的修辞手法,突出了梧桐树花期之迟,令人难以察觉。
23.燕子每年都要迁徙一次,“我”家的梧桐树成了它们归来的家;“我”长年奔波在外,故乡的家是“我”能够停歇的地方。
24.运用了想象的表现手法。作者运用想象,再加上深情的询问,表达了对燕子的关切,也含蓄的表达了对故乡的思念,同事也起到了言尽而意无穷的效果。
看过九年级语文上册期末考试题的还看了:
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随着时间的流逝,期末考试即将到来,教师们要如何准备好试题内容呢?下面是读文网小编为大家带来的关于九年级英语上册期末考试试卷,供大家参考。
A卷(共100分)
Ⅰ. 听力(每题1分,共20分)
1-5. BCEAD 6-10. ACCAB 11-15. BCBCA 16-20. ABACA
【听力原材料见后面】
Ⅱ. 词汇(共10分)
A) 根据汉语或首字母提示填空。
21. punished 22.active 23.stamps 24. pronounce 25. international
B) 用所给词的适当形式填空。
26. second 27. spoken 28. lays 29.called 30. Looking
Ⅲ. 语法与情景会话(共20分)
31-35. CBDCC 36-40. BADBC 41-45. DBBBD 46-50. CCCBD
Ⅳ. 用动词正确形式填空。(每空1分,共10分)
51. her 52. teeth 53. Teachers’ 54.developing 55. hearing
56. to learn 57. doesn’t rain 58. not to be 59. dead 60. feel
Ⅴ. 选择恰当的短语填空。(每空1分,共10分)
61. reminds…of 62. too much 63. To my surprise 64. stay up 65. take pride in
66. is patient with 57. hung out 68. all the time 69. in public 70. put on
Ⅵ. 句型转换(每空1分,共10分)
71. How ; study 72. is locked 73. is there 74. are supposed 75. if / whether is
Ⅶ. 阅读理解 (每题2分,共20分)
76-80. F T T F F 81-85. BCCDA
B卷(共50分)
Ⅷ. 完形填空(每题1分,共10分)
86-90. CBABA 91-95. CBDBC
Ⅸ. 阅读理解(每题2分,共20分)
(A) 96-100. ACDBA
(B) 101. same; spend 102. three
103. 虽然失败对于每个人都会发生,但是不同的人对于失败的态度不同。
104. After hard work, they will be successful in the end.
105. Failure is what often happens.
Ⅹ. 补全对话,每空一词(5分)
106-110. CBFAE
Ⅺ. 略(15分)
【听力材料】
第一节:听音选图。听句子,从所给图中选出与所听到句子情景相同(相近)的图画。每个句子读两遍。
1. It’s raining now. 2. Yao Ming is taller than Jordan.
3. You are not allowed to smoke here.
4. The boy was walking down the street when a UFO landed.
5. What is the boy doing? He is reading a book.
第二节: 听句子,根据所听内容选择相应的答语,每个句子读两遍。
6. Could you please post this letter for me on your way home?
7. Is he a teacher or a student ? 8. What day is it today ?
9. You’d better go to bed earlier tonight. 10. Do you think pizza is very popular in China?
第三节::听下面5段小对话,每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,每段对话读两遍。
11. M: Do you like English , Mary ?
W: No, I don't. I like Chinese best of all .
Q: What's Mary's favorite subject ?
12. M: How many students are there in your class ?
W: There are thirty boys and twenty girls .
Q: How many students are there in her class ?
13. M: Which animal lives only in China ?
W: I think it's a panda .
Q: Which animal lives only in China ?
14. M: Would you like to go to the cinema with me tonight ?
W: I'd love to, but I'm going to do my lessons. We’ll have a Chinese exam tomorrow.
Q: What's the girl going to do tonight ?
15. M: Good afternoon. Can I help you ?
W: Yes, please . I want to buy a sweater .
Q: Where are they talking ?
第四节:听短文,根据短文内容及所给问题选择最佳答案,短文读两遍。(每小题1分,共5分)
Victor had two sons. One was seven, and the other was five. One morning Victor took his two boys and his pet dog to the town in his car to buy some food. He left his two boys and the dog in his car when he was in the food shop. A few minutes later, his car was driven off.
Then the worried father called the police at once and they began to discuss the best way to save the boys. While the adults were worried about the boys in the car, the dog was so mad at the stranger. It sat at the front seat and began barking at him. If that wasn’t enough, the two boys began to shout at the car thief, “Stop, stop! It’s not your car!” and they said angrily that it wasn’t right for him to take their father’s money when the thief wanted to steal the wallet in the car.
The two boys and the dog made the thief so crazy that he asked them for their address. Then he stopped the car in front of their house, covered his face with his shirt and ran away. When Victor and the police were discussing how to save the boys, his wife called to tell him that the car, the two boys and the dog were all home.
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初三上学期即将结束,同学们要如何准备呢?接下来是读文网小编为大家带来的关于人教版九年级上册期末考试语文试题,希望会对大家有所帮助。
一、语言知识和语言表达。(18分)
1、A、2、B、3、B、4、B、5、A、6、B。
二、古诗文阅读与积累 (22分)
7、C;(烟不是炊烟)。8、D、(不是亢奋激越)。9、C;10、①悉:全、都。②师:兵(军队)。11、如果我死的时候,不能让家里有多余的钱,不能让外边有剩余的财物,这会辜负陛下的。12、鞠躬尽瘁死而后已,忠心耿耿,尽职尽责,公正廉洁。13、亲贤臣,远小人,选贤任能。(不一定用文中话回答,意思对即可)14、略。
三、现代文阅读 (30分)
(一)15.①一面作饼,一面骂人。②不接受别人的建议。③上门买饼必须电话预订,否则概不应酬。④代销他的香饼必须在同一天卖完。⑤厌恶、拒绝机械化做饼。⑥孤僻沉默。
(3分,答出三点即可得满分)
16.承上启下。(2分)
17.用生动活泼的语言更加真切地表达出作者对香饼的喜爱之情。(2分)
18.对比与比喻的运用,突出了香伯的香饼质量无与伦比。(3分)
19.③⑪;突出了香伯的香饼独具特色。(4分)
20.提示:香伯内心的坚守精神深深地感动了“我”。在“我”的眼中,他虽然苍老无比,却又那么令人敬重。(3分)
(二):21.以国家利益为重的崇高品德。
22.比喻论证,对比论证,1分,形象、突出地论证了让人对事业的发展有极大的帮助。2分
23.不能,第④段讲的是让人对事业的发展也有极大的帮助。1分,第⑤段讲的是怎样具备让人这种品格。1分,这两段的内容是递进关系。
24.总结全文,突出中心论点,号召人们要拥有让人的美德。
25.第一个论据不行,因为第一个的内容是告诉我们要“不让”,本文第②段讲的是让人是一种涵养,一种胆识,这句话不能证明此观点,所以不行。
四、语文综合性实践活动与作文
26、(1)选③更贴切。因为它扣紧主题,具体形象地表现出此次活动的内容。(2)(2分)示例:①很多的留守儿童有抑郁情绪;②解决抑郁情绪的主要方式是对同学说。(3)(2分)示例:①举办“我与留守生心连心”演讲比赛;②开设留守儿童心理辅导课;③评选自立自强优秀留守儿童。
27.作文按中考标准评定
附:参考译文
俯伏思念您,我禀赋不高,又遇上蜀国比较艰难的时候,出兵伐魏五次,都未能成功。哪里想到我却病入膏肓,生命将要在早晚间完结。俯念陛下能够静心克制自己的享乐欲望,约束自己爱护百姓,这就是尽了孝道继承先帝的遗志,施仁爱之心于天下百姓,提拔选用那隐居不仕的贤人,来扩大增加贤良的人材,罢免赶走那些邪恶的小人,使得风俗敦厚。
我当初侍奉先帝时,日用全靠官府供给,自己不再经商务农。在成都有桑树八百棵,薄田十五顷,靠这些子孙们的衣食,自给是有富裕的。至于我在外边,不再有另外的调度,平时的吃穿用度,全部靠官府供给,不再去搞别的生计,来增加微小的收入。如果我死的时候,不能让家里有多余的钱,不能让外边有剩余的财物,这会辜负陛下的。
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练习积累越多,掌握越熟练,学习需要不断的在练习中积累,接下来是读文网小编为大家带来的关于九年级英语四月调研试题,希望会对大家有所帮助。
一、听力测试(共三节)
第一节(共5小题,每小题1分,满分5分)
听下面5个问题,每个问题后有三个答语,从题中所给的’A、B、C三个选项中选出最佳选项。听完每个问题后,你都有5秒钟的时间来作答和阅读下一小题。每个问题仅读一遍。
1. A. My classmate. B. Friendly. C. Sixteen years old.
2. A. Very dirty. B. A note. C. It’s brown.
3. A. It’s fast. B. At 8:00 am. C. It’s crowded.
4. A. It’s heavy. B. Too big. C. The one on the bed.
5. A. I’m nodding. B. A lot of hair. C. Better, thanks.
第二节(共7题,每小题1分,满分7分)
听下面7段对话,每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话仅读一遍。
6. What is Kate’s mother?
A. A doctor. B. A nurse. C. A patient.
7. Where is the man?
A. In the cinema. B. On the farm. C. At a store.
8. How is the man going to the museum?
A. By bike. B. On foot. C. By bus.
9. What are the- two people?
A. Teacher and student. B. Father and daughter. C. Doctor and patient.
10. What does the woman think of the dress?
A. The color is a bit light. B. The size is not OK. C. The dress is too short.
11. What is the man going to do?
A. Go to swim. B. Buy some paper. C. Do some work.
12. What does Mary mean?
A. She agrees with the man. B. She has a better idea. C. She doesn’t care.
第三节(共13小题,每小题1分,满分13分)
听下面4段对话或独自,每段对话或独自后有几个小题,从题中所给的’A、B、c:三个选项中选出最佳选项。听每段对话和独自前,你将有时间阅读各个小题;每小题5,秒钟;听完后,各小题将给出5秒钟的作答时间。每段对话或独自读两遍。
听下面一段材料,回答13 -15题。
13. What can we know about the woman?
A. She knew the man well.
B. She worried about the bike.
C. She repaired the bike.
14. What happened to the bike?
A. It was knocked down.
B. It was badly broken.
C. It was sold to the woman.
15. Who checked the bike?
A. Nobody did.
B. The woman did,
C. The man did.
听下面一段材料,回答16 -18题。
16. What is the woman going to do?
A. To have lunch.
B. To ask about time,
C. To buy two tables.
17. How many people will be at the restaurant?
A. Two. B. Three. C. Eight.
18. What is the woman’s first name?
A. Kate. B. Rose C. Green.
听下面一段材料,回答19 ? 22题。
19. What are these two speakers mainly talking about?
A. New Year’s Day. B. Christmas Day. C. Chinese Spring Festival.
20. Where-do children hang their stockings?
A. Over the fireplace.
B. In the Christmas tree.
C. Beside the fireplace.
21. Who do the children think will fill their stockings?
A. Father Christmas. B. Their parents. C. Their friends.
22. What will David do on Christmas?
A. Study at home. B. Watch TV. C. Visit a foreigner’s family.
听下面一段材料,回答23 ? 25题。
23. Where does Dashan study now?
A. At a university in Germany.
B. At a university in China.
C. In a Chinese school at his home city
24. When does Dashan have some difficulty understanding Chinese?
A. When talking with Chinese people.
B. When listening to Chinese talk to him.
C. When listening to Chinese talk to each other.
25. How many Chinese cities has Dashan visited?
A. Just a few. B. Three. C. Quite a lot.
二、选择填空(本题共15分,每小题1分)
将代表最佳答案的字母在答题卡上相应的位置涂黑。
26. ? We’ll travel to different places in this summer vacation. Enjoy your trip!
- ______.
A. Me, too B. Yes, I’d love to
C. The same to you D. Very well, thank you
27. Tom’s a taxi driver, _____ he really wants to be a singer.
A. or B. and C. so D. but
28. ? Do you know if Jack will drive to New York this weekend?
- Jack? Never! He ______ driving so far.
A. has hated B. will hate C. hated D. hates
29. - A nice shirt! A present?
- Yes, it is. My aunt ______ it to me for my last birthday.
A. was sending B. had sent C. will send D. sent
30. ? Is Mr. Smith in the office?
- No, He______to the library.
A. goes B. had gone C. has gone D. would go
31. ? Excuse me, can I park my car here?
- Yes, you can park on ______ side of the street.
A. another B. both C. either D. neither
32. - Oh you sound just like an Englishman.
- ______, I still have trouble expressing myself.
A. Yes, you’re right B. Well, not quite like that
C. I don’t mind D. You’re welcome
33. ? We’d better invite Tom and Kate to the party tonight.
- Yes, ______ ? I’ll give them a call right now.
A. why B. why not C. what for D. how
34. Although he failed this time, he didn’t give up and ______studying hard.
A. stopped B. continued C. succeeded D. finished
35. - Why are you so ______, Helen?
- I thought I had lost my purse, but I didn’t. I found it in my study!
A. angry B. happy C. sad D nervous
36. - Is there any ______ for two chairs in the office?
- Yes, I think so.
A. ground B. floor C. space D. area
37. - How was the performance last night?
- It was so good. Though it ______ nearly four hours, few people left early.
A. covered B. reached C. lasted D. played
38. I was late for school because my alarm clock didn’t ______this morning.
A. go on B. go off C. go away D. go up
39. -______ you leave so soon?
-Yes. I have to catch my plane.
A. Can B. Would C. Should D. Must
40. ? What did that lady ask you just now?
- She asked me______.
A. who was I waiting for
B. whether could I help her
C. how she could get to the bus stop
D. what has happened
三、完形填空(本题共15分,每小题1分)
阅读下面短文,掌握其大意,然后从41 ? 55各题所给的四个选项中,选出一个最佳答案。
Luke says, “At first I was shocked that somebody would do such a thing, but then I saw Jenifer’s (41) and knew that I had to do something. I jumped up and started chasing him down the street and calling‘Thief, stop !’but nobody seemed (42) in stopping him. They were too busy staring, like it was a (43) or something. Luckily, I play soccer for the school team, so I’ve been training all year and I’m in pretty good shape, so I (44) to catch up with him on Third Avenue and knocked him down. Once he was on the (45) I sat on top of him and waited for the police to come. I know that people say you shouldn’t do that kind of thing, (46) you never know what the person can do to you, but I didn’t think about that at the time. I was too (47).”
However, Jennifer is not the only one who’s grateful for Luke’s bravery. After police had arrested(送签捕) the thief, they (48) his apartment and found over a hundred stolen cell phones and, perhaps more (49) , an address book full of names of various criminal contacts(犯罪联络), most of whom have now been brought in for (50) as police try to break a growing ring of cell phone criminals.
Cell phone theft(盗窃)is only one of a number of technology ? related crimes that police say are on the rise. Businesspeople have been told to be extra (51) with their notebook computers, which are an easy target(目标) for criminals, and new police apartments are being set up to (52) crimes. In the last week alone, the New York Police Department has (53) over six hundred calls from people relating to one of the above crimes.
Thanks to Luke’s bravery and quick thinking, Jennifer didn’t (54) one of those victims (受害者) , and she knows (55) she’s going to thank Luke - by taking him for another meal at the same Indian restaurant. This time, however, she’s going to keep her cell phone in her purse.
41. A. purse B. phone C. head D. face
42. A. pleased B. frightened C. interested D. excited
43. A. game B. movie C. story D. joke
44. A. managed B. tried C. hoped D. meant
45. A. floor B. grass C. ground D. bed
46. A. because B. so C. if D. although
47. A. nervous B. sad C. brave. D. angry
48. A. broke B searched C. sold D. discovered
49. A. important B. common C. similar D. dangerous
50. A. questioning B. testing C. pretending D. stealing
51. A. serious B. safe C. patient D. careful
52. A. care for B. deal with C. think about D. belong to
53. A. made B. checked C. received D. refused
54. A. trouble B. offer C. become D. believe
55. A. why B. how C. when D. whether
四、阅读理解(本题共30分,每小题2分)
阅读下列短文,从每题所给四个选项中,选出一个最佳答案。
A
56. We can read the above material mostly______.
A. on TV B. in the newspaper
C. in a school report D. in the hike factory
57. From the reading we know the shop sells______.
A. only bikes B. only the parts of bikes
C. bikes and other items D. only car parts besides bikes
58. It’s clear that‘WILCO’ refers to (指) ______;
A. the boss of the main shop B. the main shops
C. the brand of the bike D. the summer sale
59. If you go to any of WILCO shops on Sundays, you have to______.
A. call number 012223 414825
B. pay more than &69.99 for one bike
C. visit www. wilcomall@ wilco-fastlift. co. uk
D. arrive at it before 4:00 p. m.
60. In this advertisement we cannot know______.
A. the information about bikes
B. the e-mail address of the main shop
C. the time the shops open on weekdays
D. whether customers can easily park at all WILCO shops
B
There is a saying, “An apple a day keeps the doctor away.” Although eating properly is important, being kind to others is also good tor your health. Studies show that people who perform kind acts are more relaxed, happier, and healthier than other people.
In one study at Arizona State University researchers, found that many volunteers experienced a sudden feeling of joy, followed by a long period of calm, after performing a kind act. This feeling, called “a help’s high” may actually help reduce stress (压力) as the body releases (释放) naturally painkillers.
Stress can cause’ serious health problems, and heart depression, and .sleeping problems. However, the study found that volunteers had fewer *stress-related health problems when they did helpful things for other people.
The study also found that people who did nice things for others felt better about themselves as well. They had higher self-esteem (自尊), and were’ happier. Many believe this is because volunteers spend more of their time with other people. People who are more outgoing are often healthier.
Another study at the University of Michigan’s Survey Research Center confirmed the health benefits of volunteering. A ten-year study showed that people who volunteered live longer than those who didn’t. Although you shouldn’t need a reason to be helpful, it is nice to know that kindness may help you live longer.
61. The reading is mainly about ______.
A. healthy people are kind because they have more energy
B. one has to eat an apple every day to become healthy
C. kind people can be stressed because they are always helping
D. doing kind things can make you feel good and help you he healthier
62. According to the reading ______.
A. it is better to be kind than to eat well
B. kindness can help you feel healthy
C. an apple a day can keep doctors away
D. eating correctly makes one happy and healthy
63. You can get a help’s high ______.
A. by volunteering your time
B. by taking painkillers
C. by eating properly
D. by sleeping well
64. The study found that people who help others can have ______.
A. sleeping problems and stress
B. less natural painkillers
C. overeating and depression problems
D. fewer health problems
65. Another study of almost 3 ,000 men showed that people who volunteered _____.
A. lived longer B. needed a reason to be helpful
C. wanted to live longer D. had lower self-esteem
C
Sarah ran in, shouting, “Look what I found!” Over the top of the paper I was reading; came a terrible thing that caused me to jump. It was a snake skin found in our garden.
“Isn’t it beautiful?” said my seven-year-old daughter.
I opened my eyes widely and looked at the snake skin in fear. I didn’t think it was beautiful, but I learned never to appear nonchalant(冷漠的)with children. Everything they see for the first time is important to their sense of beauty; they see only excellence in the world.
“Why does it do this?” Sarah asked.
“Snakes shed(蜕) their skins because they need to renew themselves,” I explained.
“Why do they need to renew themselves?” Sarah asked.
“We often need to shed our skins, those coatings that we cover ourselves with,” I said to my daughter. “We leave some things and find other thing unwanted or unnecessary. This snake no longer needs this skin. It is probably too little for him, and he probably doesn’t think he looks as smart in it as he once did. “
As we talked, I knew that she began to understand. Although she couldn’t understand clearly, she would know that renewal is part of progress; that we need to take a good look at ourselves, our rooms, schoolwork and spirit, and see what we need to keep and what we need to leave. I was careful to tell that this is a natural way, not one to be forced.
“Snakes don’t peel off their skins when they like them. “I explained. “It happens as a natural thing of their growth. “
“I see, Dad,” said Sarah as she held the snake skin, and then ran off.
I hoped she would remember this; we need to throw some away because they are worthless or unnecessary. Then we can store them as memories m our deep hearts.
66. Father jumped up when her daughter came to him with a snake skin because ______.
A. he didn’t want to read any more
B. he was in great fear of it
C. he wanted to praised her daughter
D. he hated snakes
67. Father’s patient explanation shows that ______.
A. his daughter didn’t want to listen to him at all
B. he knew children saw only excellence in the world
C. his daughter couldn’t follow him at all
D. he wanted to teach everything to her
68. In this reading the underlined word ‘renew’ means ______.
A. to begin to do something again
B. to make something newer than before
C. to replace something old with something new
D. to cover something old with something new
69. We learn from the reading that______.
A. the girl seemed to understand what her father said
B. the girl wasn’t interested in the explanation
C. the father was good at raising snakes
D. the father liked the snake skin better
70. Which of the following titles is the best for the reading?
A. Snake Skin B. Renew Ourselves
C. Father and Girl D. Great Discovery
第Ⅱ卷(非选择题共35分)
五、词与短语选择填空(本题共10分,每小题2分)
仔细阅读下面五个句子,然后用下面方框中所给的单词或短语填空,使每个句子在结构、句义和逻辑上正确。(提示:选项中有一个是多余的。)
give out /strange / provide / delicious / keep out /join
71. The best way to improve your English is to ___ an English club.
72. Be quiet please, class. I’m going to__ your test papers.
73. Mr. Tan makes the best noodle in town. They’re _____!
74. There’s a __smell in the house. Do you know what it is?
75. Could you ___ me with information about student exchange programs?
六、阅读理解填词(本题共10分,每小题1分)
先阅读短文,再在其后空白处写出各单词的正确形式。单词的第一个字母已给出。
In 1993, Greg Mortenson took a trip to Pakistan to climb K2, the second tallest mountain in the world. On his way down the mountain, he got l (76). Food and water were hard to find, but Mr. Mortenson found a small village. The people there saw that he was in n (77) and helped him. While in the village, Mr. Mortenson w(78) the children write in the dirt for their school l(79).The village did not have money to build a school or pay for a t(80),Before he left, Mr., Mortenson volunteered to r( 81) to the village and help them build a school
Mr. Mortenson went back to the US and wrote to many rich people. He asked them to d (82) money to build a bridge and a school for the village. The I (83) did not work very well, but at last e (84) people heard about Mr. Mortenson’s plan and helped him. That was the beginning of the Central Asia Institute, an organization that has succeeded in building or helping to build more than 130 schools in small villages in Pakistan and Afghanistan With the help of journalist David Relin, Mr. Mortenson wrote the famous book Three Cups of Tea. It is about his work with villages in Pakistan and Afghanistan. Some people have criticized him, however, Mr. Mortenson was given a p(85) in 2009 by the government of Pakistan for his work in the country.
七、书面表达(本大题15分)
假如你是李明。
明天是周六,你给汉口某校的外教史密斯打电话,邀请他到武昌游玩。
内容要点如下:
1. 乘2号线地铁到洪山广场,你们在那里见面;
2.明天会很热,轻装;
3.穿运动鞋,游东湖,爬山;
4.请你补充交代一两件事。
要求:
1.不要逐条翻译,内容要连贯。
2.词数:60-800 .
参考词汇: the subway(地铁)square (广场)sports shoes (运动鞋)
电话开头和结束语已给出:
Is Smith there? Hi, this is Li Ming.-I’d like to invite you to Wuchang to get relaxed tomorrow.
See you tomorrow.
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在即将到来的期末考试,教师们要如何准备试题呢?下面是读文网小编为大家带来的关于九年级英语上册期末考试题,供大家参考。
第一节(共10小题)
听下面10段短对话,每段对话后有一个小题,从题中A、B、C三个选项中选出最佳选项。听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。每段对话读两遍。
听第1至10段材料,回答第1至10题。
W: New Year’s Day is coing next week. What present shall we buy for our parents?
: Let’s ake a New Year’s Day card and write down our best wishes on it.
2. : Please turn on the TV.
W: I think Billy has turned it on. He has finished his hoework.
3. : What bad weather! I don’t like the rain!
W: The rain won’t last long. The radio says it will be fine soon.
4. : Look, two teas are having a atch on the playground.
W: Yes, one player has got the ball, and he’s trying to throw it into the basket.
5. W: Is it your first visit to China?
: No, I cae here in 1980 and 1990.
6. W: When did the fil begin?
: At a quarter to six. When I arrived at the cinea, it had already been on for ten inutes.
7. W: Excuse e. Where can I buy a pair of woen’s shoes?
: The woen’s shoes are on the fifth floor, next to the lift. You have to go two floors up.
8. W: Did Sandy coe back fro Aerica last week?
: Yes, but she was at hoe for only three days and then she went to Japan.
9. : ay I borrow fifty dollars, rs. Green?
W: OK. Here it is.
10. : I want to exercise, but never see to find the tie.
W: Why not do it first thing in the orning?
第二节(共10小题)
听下面3段长对话和短文,每段对话和短文后有几个小题,从题中A、B、C三个选项中选出最佳选项。听每段对话和短文前,你将有时间阅读各个小题,每小题5秒钟,听完后,每小题将给出5秒钟的作答时间。每段对话和短文读两遍。
听第11段材料,回答第11、12题。
: Hi, Lily. Why are you in a hurry?
W: I’ afraid I will be late for class.
: But we have no classes this afternoon.
W: I kno But I a going to French class in a language school.
: French? Are you learning French for fun?
W: No,I’ planning to go to France to learn painting.
: Are you? France is the right place.
W: Yeah. So I have to iprove y French as quickly as possible.
: Good luck, Lily.
W: Thank you.
听第12段材料,回答第13至15题。
Eating habits are different in different countries. The Chinese have a saying “Eat good things for breakfast, eat a big eal for lunch, but eat less at dinner.” any Aericans agree that one should start the day with a good breakfast, but their ideas about lunch and dinner are different. They eat a sall lunch. Also a quiet dinner at hoe with all the faily talking about their day is a way to take a good rest after a long, hard day of work.
Eating at the restaurant is also different. In China, people like to talk and laugh while eating. In Aerica it is not like this. They want a quiet place where they can eat a good eal far away fro the noises of the outside world.
听第13段材料,回答第16至20题。
I knew little about English when I first cae to Aerica. So I went to a language school every day except Sunday to learn English. One day during the break, I asked Alice, one of y classates, a question about soething that I didn’t understand. When I thanked her for it, she said, “You are welcoe, it’s a piece of cake.” I thought to yself, Aerica is really a “oney” country in which everything is done for pay. So I said to her, “I don’t have a piece of cake with e today. What about soething else?” She looked at e with a big sile and said, “What I ean is, ‘no proble’, It is just a sall atter.” Fro now on, I cae to learn that “a piece of cake” eans soething that is very veryeasy.
第一卷(客观题 共70分)
听力(20分)
1. A2. C3. A 4. C5. B 6. B7. B8. B9. C10. B
11. B12. C13. C14. C15. B16. B17. B18. C19. C20. B
单项选择(本大题共14小题,每小题1分,共14分)
1. B 2. B 3. B4. C5. C 6. C 7. A8.D9.C10.D
11. C12. C13. A14. D
完形填空(本大题共10小题,每小题1分,共10分)
15. B16. D17. C18. C19. B20. C21. A22. A23. B 24. D
阅读理解(本大题共8小题,每小题2分,共16分)
25.A 26. B27. A28. A29. C30. D31. D32. C33.B
34. B 35.D 36.C 37.C
第二卷(主观题 共40分)
词汇运用 (本大题共8小题,每小题1分,共8分)
(A) 1. directors’2. twelfths3. adder4. noisily
(B) 5. whether6. disadvantages7. affected 8. against
动词填空 (本大题共8小题,每小题1分,共8分)
1.wasn’t decided2. would reind3. was packing 4. be done
5. to learn 6. hadn’t et 7. controlling 8. have told
短文填空 (本大题共10空,每空0.5分,共5分)
1. began2. word3. called4. built5. honour
6. stop7. disappeared8. what9. popular10. exciting
完成句子 (本大题共6小题,每小题1.5分,共9分)
Sending e-ails to writing
they have been in love with each other
Were written in the for of
Have gone far beyond e
Is well worth taking a close look at
Reind e of what Wuxi was like
书面表达(10分
At present, Earth is becoing ore and ore crowded and polluted. How to protect the environent has becoe one of the biggest probles in the world no The quality of the air is getting worse and worse. It does har to people’s health. Waste water pollutes
Rivers and a lot of fish have died. The governent should put all its effort into preventing pollution and iproving the environent. People should change their unhealthy life styles. I think ore people should go to work by bus instead of by car.
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政治八年级的考点会有哪些呢?下面是读文网小编为大家带来的关于中考政治八年级考点汇总,供大家参考。
基本概念
1、杠杆
①定义:一根硬棒,在力的作用下能绕着固定点转动,这根硬棒就是杠杆。
②支点:杠杆绕着转动的点。
③动力:使杠杆转动的力。
④阻力:阻碍杠杆转动的力。
⑤动力臂:从支点到动力作用线的距离。
⑥阻力臂:从支点到阻力作用线的距离。
2、定滑轮
①定义:轴固定不动的滑轮叫定滑轮。
②原理:定滑轮实质是等臂杠杆,不省力,但能改变力的方向。
3、动滑轮
①定义:轴可以随物体一起移动的滑轮叫动滑轮。
②原理:动滑轮实质是动力臂(滑轮直径D)为阻力臂(滑轮的半径R)2倍的杠杆。动滑轮省一半力。
4、滑轮组
①定义:由几个滑轮组合在一起使用就叫滑轮组。
②原理:既利用了动滑轮省一半力又利用了定滑轮改变动力的方向。
③承担物重的绳子有几段,所用拉力为物重的几分之一。
5、机械功(J)
①功的初步概念:力作用在物体上,物体在这个力的作用下通过了一段距离,
功包括两个必要因素:一是作用在物体上的力,二是物体在力的方向上通过的距离。
②功的计算:功等于力跟物体在力的方向上通过的距离的乘积。公式:功=力×距离
③功的单位:焦耳,简称焦,符号为J。
力的单位是N,距离的单位是m,功的单位就是N·m
6、功率(W)
①功率的概念:单位时间里完成的功,叫做功率。功率表示做功的快慢。
②功率的计算:公式为 功率=功/时间,
③功率的单位:功率的单位是J/s瓦特。简称瓦,符号W。
功的单位是J,时间的单位是s,功率的单位就是J/s。
7、机械效率(η)
①有用功跟总功的比值叫机械效率。公式:η=W有用/W总×100%
②机械效率总是小于1。
③注意机械效率跟功率的区别
机械效率和功率是从不同的方面反映机械性能的物理量,它们之间没有必然的联系。功率大的机器不一定效率高。
8、动能和势能
①动能:物体由于运动而具有的能量。一切运动的物体都具有动能。运动物体的速度越大,质量越大,它的动能就越大。
②势能:势能可分为重力势能和弹性势能。
重力势能:物体由于被举高而具有的能量。物体的质量越大,举得越高,它具有的重力势能就越大。
弹性势能:物体由于发生弹性形变而具有的能量。物体的弹性形变越大,它具有的弹性势能就越大。
③机械能:动能和势能统称为机械能。
9、能和势能的转化
动能可以转化为势能,势能也可以转化为动能。
基本公式
1、杠杆的平衡条件:
动力×动力臂=阻力×阻力臂,F1·L1= F2·L2
2、功的计算:W=Fs
3、功率的计算:P=W/t
4、滑轮组拉的大小:F=G/n
5、滑轮组机械效率:
基本实验
一、测滑轮组的机械效率
1、实验方案
①原理:
②器材:弹簧测力计、刻度尺
③步骤:
㈠使弹簧测力计竖直向上匀速提升重物,测量绳子移动距离s、物体上升高度h
㈡测出拉力F、物体重力G
㈢计算滑轮组的机械效率
2、实验结论
①滑轮组中动滑轮个数越多越省力,但机械效率越低;
②同一机械,提升的重物越多,机械效率越高
③重物提升高度不影响滑轮组的机械效率
基本规律
1、杠杆分类
①省力杠杆:动力臂大于阻力臂的杠杆。例如:起子、扳手、撬棍、铡刀等。
②费力杠杆:动力臂小于阻力臂的杠杆。例如:镊子、钓鱼杆,赛艇的船浆等。
③等臂杠杆:动力臂等于阻力臂的杠杆。例如:天平。
特点:省力杠杆省力,但费距离(动力移动的距离较大),费力杠杆费力,但省距离。等臂杠杆不省力也不省距离。既省力又省距离的杠杆是不存在的。
2、功的原理
使用机械时,人们所做的功都等于不用机械而直接用手所做的功,也就是使用任何机械都不省功。这个结论叫做功的原理。
3、常见不做功的三种情况:
①有力无距:如搬而未起,推而未动;
②有距无力:如物体在光滑的水平面上做匀速直线运动;
③力距垂直:水平方向运动的物体,由于运动方向与重力方向垂直,故重力不做功。
4、功的注意事项:
力与物体移动的距离在方向上必须一致,力与物体移动的距离必须对应于同一物体且同一段时间。
看过八年级物理上册期末考试复习知识点汇总的还看了:
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寒窗苦读,为的就是在考试中展现出自己最好的水平,大家更应该加把劲,努力学习,认真总结知识点,大量做题,从中找出自己的不足。接下来是读文网小编为大家带来的关于九年级英语上册期末考试试题,希望会给大家带来帮助。
I. Listening (本题共25小题, 每小题1分,共25分)
1—5: ACBAA 6—10: ABCBA 11—15: BACAB
16—20: BAACC 21—25: ABBCC
II.Multiple Choice. (本题共15小题,每小题1分,共15分)
26. D 27. B 28. A 29. A 30. C
31. B 32. C 33. A 34. B 35. C
36. C 37. C 38. B 39. C 40.A
III.Cloze Test. (本小题共10小题,每小题1分,共10分)
41. B 42. C 43. A 44. C 45. D
46. B 47. B 48. A 49. A 50. C
IV. Communication. (本小题共5小题,每小题1分,共5分)
51. B 52. F 53. A 54. E 55. C
V. Reading Comprehension.
(本题共20小题,A、B、C每小题1分,D每小题2分,共25分)
( A ) 56. T 57. F 58. T 59. F 60. F
( B ) 61. C 62. F 63. A 64. D 65. B
( C ) 66. D 67. C 68. A 69. B 70. B
( D ) 71. C 72. A 73. B 74. C 75. C
VI.Vocabulary. (本题共5小题,每小题1分,共5分)
76. kindness 77. pleased 78. succeeded 79. quickly 80. buying
VII. Reading Comprehension.
(本题共15小题,A每小题1分,B每小题2分,共20分)
( A )
81. bells 82. rings 83. quickly 84. happy 85. interesting
86. Many / More(都可) 87. lunch 88. buy 89. bring 90. After
( B )
91. No, they don’t.
92. Yes, there is.
93. The education in US encourages personal thoughts.
94. group goals.
95. 但是在一些亚洲国家,老师们经常感到他们的工作是把知识传递给学生
VIII.Writing. (本题共2小题,A题5分,B题10分,共15分)
略。
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在月考即将到来之际,教师们要如何准备试题呢?接下来是读文网小编为大家带来的九年级物理上册第二次月考试题及答案,供大家参考。
一、 单项选择题(本大题共10小题,每小题3分,共30分。下列每小题给出的四个选项中,只有一项最符合题意)
1、实验现象中,能说明分子间有引力的是A
甲 乙 丙 丁
A.甲中,两表面光滑的铅块紧压后能粘在一起
B.乙中,两塑料吸盘间空气被挤掉后能吊起重物
C.丙中,带电体能吸引轻小物体
D.丁中,打开醋瓶盖能嗅到醋味
2、符合家庭用电安全要求的是D
3、下列对热学知识进行的归纳总结中,正确的是 A
4、 把一只标有“220 V 40 W”的灯泡与一只标有“220 V 60 W”的灯泡串联,接在电源电压恒定为440 V的电路中,结果将 C
A.两灯都完好,且都正常发光
B.两灯都完好,但只有40W的灯正常发光
C.40 W 的灯将烧坏,60 W 的灯完好
D.40 W 的灯完好,60 W 的灯将烧坏
5、下列说法中正确的是B
A. 物体吸收热量,温度一定升高
B. 物体温度升高,内能一定增加
C. 物体内能增加,一定是从外界吸收热量
D. 物体内能增加,温度一定升高
6、“庆教师节文艺会演”时,物理组的老师给大家表演了一个“不怕电”的节目。首先姚老师将一标有“PZ220-100”的灯泡接到两导线头M、N之间,灯泡正常发光。随后将灯泡取下,姚老师站到干燥的木凳上后,左右手分别抓住M、N两导线头。刘老师用测电笔分别测试M、N及姚老师的皮肤,发现测电笔的氖管都发光,而姚老师却谈笑自如。对以上现象的解释,你认为正确的是( )应选C。
A.姚老师有特异功能,确实不怕电
B.姚老师的双手戴着绝缘手套
C.在人、灯替换之时,申老师将零线断开了
D.在人、灯替换之时,申老师将火线断开了
8、电流表示数为I,电压表示数为U,R1、R2为已知阻值电阻,则下面关系式中不正确的是( ) B
A. =R1+R2
B. =
C.
D.
9、A、B是两个用细线悬挂着的物体,A的质量远大于B的质量,关于它们的带电情况不可能是( )C
A、A物体带电,B物体不带电 B、B物体带电,A物体不带电
C、A、B都带电,且带的是同种电荷 D、A、B都带电,且带的是异种电荷
10、用电阻丝加热某种物质,得到的熔化图像。电阻 丝的发热的功率为P,放出的热量有50%被该物质吸收,该物质的质量为m,则这种物质比热容的大小为(假设这种物质固态和液体的比热容相同)( )A
A.小于 B. 大于
C.等于 D.等于
二、多项选择题(本大题共3小题,每小题3分,共9分。每小题给出的四个选项中,有一个或几个符合题意,全部选对的得3分,选对但不全的得1分,不选或选错的得0分)
11、电源电压恒定,Rl为定值电阻,R2为滑动变阻器.闭合开关S后,滑动变阻器滑片自a向b移动的过程中 AC
A.电流表A的示数变小,电压表V2的示数与电流表A的示数之比变大
B.电流表A的示数变小, 电压表V2的示数变化量与电流表A的示数变化量之比的绝对值变大
C.电压表V1的示数变小,电路消耗的总功率变小
D.电压表V2的示数变小,电路消耗的总功率变小
12、小灯泡L的额定电压为3V,它的I﹣U图象,把小灯泡接入乙的电路中,先将滑动变阻器的滑片P移至B端,闭合开关S,电压表示数为1.5V;再将滑片P向左移动直到电压表示数为3V.已知电源电压恒定,滑动变阻器的铭牌上标有“10Ω 2A”.下列说法中正确的是()ABC
A. 电源电压为4.5V
B. 小灯泡的额定功率为1.5W
C. 小灯泡正常发 光时,滑动变阻器接入电路的阻值为3Ω
D. 小灯泡正常发光时,滑动变阻器消耗的电功率为2.5W
13、一种调温 型电热毯的电路,R1和R2是两根相同的电热丝.虚线框内是“三刀四档”滑 动式调温开关,“三刀”(即AB、CD、EF三个滑片)只能同时并排向左或向右滑动,使开关处于“1”、“2”、“3”、“4”档中的某一档位上.当开关处于“4”档时,电热毯不发热;当开关处于其他三档中的某一档位时,电热毯的最小发热功率为30W.()X
A. 电热毯以最小发热功率工作时,流过电路中的电流为1.4A
B. 开关分别处于“1”档时,电热毯的发热功率为120W
C. 开关分别处于“2”档时,电热毯的发热功率为60W
D. 开关分别处于“3”档时,电热毯工作30min产生的热量是5.4×104Kw•h
【答案】BC
第Ⅱ卷
三、填空题(本 大题共6小题,每小题4分,共24分)
14、三脚插头中与用电器金属外壳连接的那个插脚比另两个插脚要稍长,这样设计是为了 . 近年来有许多重大火灾都是因线路故障造成的.线路故障的一个原因是线路连接处接触不良.当线路连接处接触不良时,与连接完好相比该处的阻值将增大,在该处消耗的电功率将 (选填“减小”或“增大”或“不变”)。
地线插入插座时外壳先接地线,拔出插座时外壳后脱离地线. 增大
15、是家庭电子式电能表的表盘,其示数是 Kw•h。表盘上标有"3200 imp/kw•h"表示每消耗1 kw•h的电能,指示灯闪烁320 0次。若家庭电路中只有一台电热水器在工作且该电能表的指示灯在4 min内闪烁320次。则该热水器的实际功率是 W. 318.6 1500
16、一台电视机出了故障,经检查是一只阻值为2 kΩ的定值电阻被烧坏,通过分析电路知道这个定值电阻的工作电压为30 V。现手头只有的4只标有铭牌的定 值电阻。我们可将电阻____ _____________(选填序号)采用_________联(选填“串”或“并”)的连接方法替换那只被烧坏的电阻。(3)、(4)串
17、一段粗细均匀的电阻丝电阻值为16Ω,将它围成一个封闭的圆圈,
所示,则A、B两点间的电阻为__________Ω。为探究串联电路电压规律,小敏将该段电阻丝分成长度不等的两段,设计了电路,她先将S掷1,测R1两端电压,之后再将S掷2,她不能测出R2两端电压,因为______________________________________________________________。
3、电压表正负接线柱接反
18、电路中,灯泡L1、L2分别标有“6 V 3.6 W”和“12 V 6 W”的字样(不考虑温度对灯 19、人们利用发电机把天然存在的各种形式的能转化为电能.为了合理地利用这些能源,发电站要修建在靠近这些天然资源的地方,但是用电的地方往往很远,因此需要输送线路把电能输送到远方.为了将甲地的电能输送到乙地,在甲、乙两地间架设了两根等长的输电线,两根输电线的总长度为LKm,且每米输电线的电阻为rΩ.已知位于甲地的两根输电线间的电压为UMV,输送电能的功率为PKW,则通过输电线的电流I等于__________.该输电线路输送电能的效率η为______________.
四、综合题(本大题共6小题,共37分。解题中要求有必要的分析和说明,计算题还要有公式及数据代入过程,结果要有数值和单位)要求计算题写出已知,求,解,答话。
20、(6分)某电热水壶及铭牌,装入一满壶20℃的凉水,通电正常工作6分钟即被烧开至100℃.已知水的比热容c=4.2×103J/(kg•℃) 求:(1)该过程中水吸收的热量。(2)电热水壶的效率。
(1)∵ρ= m /V ∴m=ρV=1.0×103 kg/m3×1.5×10-3m3=1.5kg
水吸收的热量:Q吸=cm(t-t0)=4.2×103J/(kg•℃)×1.5kg×(100℃-20℃)=5.04×105J.
(2)∵电热水壶正常工作,∴水壶的功率P=P额=1500W,又∵P=W/t
∴6min内消耗的电 能:W=Pt=1500W×6×60s=5.4×105J.
21、(4分)甲是家用插线板在乙画出插线板内部开关和两插座的连线,并接入家庭电路,要求:①插线板上的开关可同时控制两插座的通、断②开关接通时两插座都能提供220V电压.
22、(10分)某实验小组的同学用器材测量小灯泡的电功率。已知待测小灯泡额定电压为3.8 V,小灯泡的额定功率估计在1.2 W左右。要求:(1)用笔画出导线完成电路的连接,要求滑片向右移灯变亮。(2)在虚线框中画出相应的电路图。(3)设计出实验记录表格。
(4)小明在测一个额定电压为U0的小灯泡的额定电功率实验中,发现没有电压表,他又找到一个已知电阻R0、若干开关和导线。请你帮助他设计出实验电路图(不重复组装电路),写出实验步骤和需要测量的物理量,并用已知量和测量量表示出小灯泡额定功率的表达式。
(1)图略。2分。错一处扣一分,扣完为止。
(2)图略。1分。错一处扣一分,扣完为止。
(3)2分。错一处扣一分,扣完为止。
实验序号 电压U/V 电流I/A 电功率P/W 小灯泡的亮度
1
2
3
(4)1分
实验步骤:
①连接实验电路,所有开关断开,将滑动变阻器阻值调到最大。(1分)
②闭合开关S、S1,调节滑动变阻器的滑片,直到电流表的示数为 (1分)
③保持开关S闭合和滑动变阻器的滑片位置不动,闭合开关S2后断开开关S1,记下电流表的示数I(1分)
(3)表达式 (1分)
23、(8分)电源电压恒为8V,滑动变阻器R2的最大阻值为60Ω.电流表的量程为0~0.6A,电压表的量程为0~15V.求:(注:求解时画出相应的等效电路
⑴只闭合开关S1时,电流表示数为0.2A.则R1=?
⑵只闭合开关S2时,电压表示数为3.8V,此时小灯泡L正 常发光.则小灯泡L的额定功率PL额=?
⑶开关Sl、S2、S3都闭合时,为保证各电路元件安全使用,则滑 动变阻器R2的可调范围和电流表相应的变化范围分别是多少?(结果若不能除尽请保留两位小数)
一个等效电路图1分,
(1)只闭合开关S¬1时,等效电路
(Ω)(1分)
(2)只闭合开关S¬2时,等效电路
(V)
(A)(1分)
(W)(1分)
(3)开关S¬1、S¬2、S3时,等效电路
≤0.6A
R¬2≥20 (Ω)
滑动变阻器的可调范围是20Ω~60Ω (1分)
当滑动变阻器取最大值R¬2大=60Ω时,电流表示数最小
≈0.33 (A)
电流表相应的变化范围是0.6 A~0.33A (1分)
说明:滑动变阻器的可调范围与电流表的变化范围不写扣1分,不对应的扣1分.
24、(4分)小红与小明分别用装置探究电流一定时,电流产生的热量与电阻的关系,他们分别将两段阻值不同 的电阻丝(R1
(1)在这个实验中,电流产生热量的多少是通过 体现出来的.
(2)他们同时开始进行实验,在a、b两个气球中,鼓起来最快的是 .
(3)小红和小明的实验方案 中有一个是错误的,我认为 的方案是错误的.理由是
(1)气球鼓起的程度(2)b(3)小明、小明方案中,没有控制电流一定
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三、具体时间安排与措施
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具体措施:
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教师们对于教学计划的编制工作有什么样的建议或者意见呢?让我们来一起探讨一下吧!下面是读文网小编整理的鄂教版九年级上册物理教学计划以供大家阅读。
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