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精选11篇 人教版初二物理上册期末试卷及答案

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下面是小编为大家整理的人教版初二物理上册期末试卷及答案,本文共11篇,仅供参考,大家一起来看看吧。

篇1:-人教版初二物理上册期末试卷及答案

精选11篇 人教版初二物理上册期末试卷及答案

一、选择题:(本题共14小题,每小题2分,共28分.每题给出的四个选项中只有一个选项正确)

1.我们每一位市民的文明举止是城市文明的重要标志,开车时不要乱鸣笛就是其中之一。如图所示,是道路交通“禁止鸣笛”的标志,主要目的是为了控制城市的噪声污染,这种控制噪声的途径是( )

A.在人耳处 B.在传播途中 C.在声源处 D.以上方式都有

2.蜜蜂载着花蜜飞行的时候,它的翅膀平均每秒振动300次,不载花蜜时平均每秒振动440次,有经验的养蜂人能辨别蜜蜂是飞出去采花,还是采了蜜飞回家,养蜂人主要是根据什么特征来辨别的( )

A.声音的音调不同 B.声音的响度不同

C.飞行路线形状不同 D.飞行高低不同

3.测量就是将待测量与标准量的比较,对生活中常见物体尺度的感悟是提高估测能力的基础。以下对常见物体尺度的估测中正确的是( )

A.物理课本的宽度约为16.9dm B.一支普通牙刷的长度大约是20cm

C.普通教室的高度约为15m D.自行车车轮直径约为1.5m

4.一个物体正常运动的速度约为5m/s,该物体可能是( )

A.蜗牛 B.步行的人 C.自行车 D.汽车

5.下列自然现象属于凝华的是( )

A.春天到了,积雪融化 B.夏天的早晨,草地上出现露珠

C.秋天的早晨,出现大雾 D.初冬的早晨,地面上出现白霜

6.下列四个实例中,能够使蒸发减慢的是( )

A.将新鲜的黄瓜装入塑料袋 B.将湿手伸到干手器下方吹

C.将湿衣服晾在通风向阳处 D.将新收获的玉米摊开晾晒

7.一只小鸟在平面玻璃幕墙前飞来飞去,欣赏它自己在幕墙中轻盈的“身影”。以下描述

正确的是( )

A.“身影”始终和小鸟一样大

B.小鸟靠近幕墙过程中,“身影”远离幕墙

C.小鸟远离幕墙过程中,“身影”逐渐变小

D.“身影”到幕墙的距离大于小鸟到幕墙的距离

8.下列有关光现象的解释,正确的是( )

A.雨后彩虹是光的反射现象

B.城市玻璃幕墙造成的“光污染”是光的折射现象

C.白光通过三棱镜可以分解成红、橙、黄、绿、蓝、靛、紫等七色光

D.电影屏幕制成白色是因为白色吸收各种色光

9.如右图所示,乙容器内盛有水,甲容器盛有右表所列的一种液体。在一个标准的大气压下,对甲容器的底部持续加热,最终发现乙容器内的水沸腾了。则甲容器内盛的液体是( )

A.液态氨 B.酒精

C.水 D.煤油

10.夜晚,当汽车发出的光照射到自行车尾灯上时,司机看到尾灯反射的光,就能及时避让。下图中有关自行车尾灯的光路图正确的是( )

11.从岸边看水中的鱼,看到“鱼”的位置与实际位置不同。下列模型能解释此现象的是( )

12.如图所示,一束激光AO由空气斜射入玻璃砖,折

射后从另一侧面射出,其出射点可能是图中的( )

A.M点

B.N点

C.P点

D.Q点

13.下列关于运动和静止的说法正确的是 ( )

A.人在上升的电梯中,以地面为参照物,人是静止的

B.月亮在云中穿行时,以云为参照物,月亮是运动的

C.飞机在空中加油时,以地面为参照物,受油机是静止的

D.漂流而下的小船,以河岸为参照物,小船是静止的

14.《龟兔赛跑》的寓言故事大家都非常熟悉。乌龟和兔子同时从起点跑出,骄傲的兔子在遥遥领先的情况下,睡起了大觉,醒来后跑到终点,发现坚持不懈的乌龟获得了冠军。对整个赛跑过程而言,下列运动图像正确的是(其中实线表示兔子,虚线表示乌龟)( )

篇2:初二上册物理期末试卷及答案

初二上册物理期末试卷及答案

答案:

一、选择题(本题共14小题,每小题2分,共28分)

题号 1 2 3 4 5 6 7 8 9 10 11 12 13 14

答案 C A B C D A A C D A D B B A

二、填空题(每空1分,共32分)

15.振动 固体 信息 16.不能 真空不能传声 17.1 1.81~1.89之间均对

18.紫外线 红外线 19.晶体 340 8 20.显微镜 望远镜 21.(1)直线传播

反射 (2)折射 反射 (3)大于 22.近视 凹 23.甲 乙 24.热胀冷缩 A 38.1 准确 25.(1)静止 (2)汽化 吸收 (3)凸 倒

三、解答题(共40分,解答32题时应有解题过程)

26.(6分)(略) 27.(7分)(1)温度计玻璃泡接触到容器底部 (2)①94 ② a 98 (3)不变 液化 (4)低 28.(7分)(1)尺 (2) 垂直 (3)大小

(4)C(2分) (5) D(2分)

29. (8分)(1)会聚 10 (2)蜡烛、凸透镜、光屏三者的中心不在同一高度或物距小于一倍焦距或物距等于一倍焦距等 (3)左 (4)①缩小 ②大 (5)左 (6)两个蜡烛并排放置且烛焰高度不同.然后观察光屏上两个烛焰像的情况(或用嘴轻轻的吹烛焰使其左右摆动.然后观察光屏上烛焰像的变化情况;或用物体在烛焰前挡住左侧或右侧一部分火焰.然后观察光屏上烛焰像的变化情况或找一个发光的F字母作为物体,观察光屏上的成像情况)合理即可得分

实际问题 解决方法

在探究的声音产生实验中,拍桌子时桌面的振幅太小,不便于观察 在桌面上撒些泡沫颗粒,观察拍桌子时泡沫的跳动(其他合理答案亦可)

为探究光在空气中的传播情况,按亮激光小手电,但不能观察到光的传播路径 让光通过烟雾(其他合理答案亦可)

手里仅有一把分度值为1毫米的刻度尺,无法直接测量物理课本一张纸的厚度 先测出整本书的厚度,然后再除以整本书的纸张数(其他合理答案亦可)

30. (3分)

31.(5分)(1)下落距离 时间 (2)路程 时间 (3)增大伞面面积或减小伞重等(合理即可)

32.(4分)(1)120km/h (2)86.7km(评分说明:写对公式得1分、代对数据,结果正确得1分,)

试题:

一、选择题:(本题共14小题,每小题2分,共28分.每题给出的四个选项中只有一个选项正确)

1.我们每一位市民的文明举止是城市文明的重要标志,开车时不要乱鸣笛就是其中之一。如图所示,是道路交通“禁止鸣笛”的标志,主要目的是为了控制城市的噪声污染,这种控制噪声的途径是( )

A.在人耳处 B.在传播途中 C.在声源处 D.以上方式都有

2.蜜蜂载着花蜜飞行的时候,它的翅膀平均每秒振动300次,不载花蜜时平均每秒振动440次,有经验的养蜂人能辨别蜜蜂是飞出去采花,还是采了蜜飞回家,养蜂人主要是根据什么特征来辨别的( )

A.声音的音调不同 B.声音的响度不同

C.飞行路线形状不同 D.飞行高低不同

3.测量就是将待测量与标准量的比较,对生活中常见物体尺度的感悟是提高估测能力的基础。以下对常见物体尺度的估测中正确的是( )

A.物理课本的宽度约为16.9dm B.一支普通牙刷的长度大约是20cm

C.普通教室的高度约为15m D.自行车车轮直径约为1.5m

4.一个物体正常运动的速度约为5m/s,该物体可能是( )

A.蜗牛 B.步行的人 C.自行车 D.汽车

5.下列自然现象属于凝华的是( )

A.春天到了,积雪融化 B.夏天的早晨,草地上出现露珠

C.秋天的早晨,出现大雾 D.初冬的早晨,地面上出现白霜

6.下列四个实例中,能够使蒸发减慢的是( )

A.将新鲜的黄瓜装入塑料袋 B.将湿手伸到干手器下方吹

C.将湿衣服晾在通风向阳处 D.将新收获的玉米摊开晾晒

7.一只小鸟在平面玻璃幕墙前飞来飞去,欣赏它自己在幕墙中轻盈的“身影”。以下描述

正确的是( )

A.“身影”始终和小鸟一样大

B.小鸟靠近幕墙过程中,“身影”远离幕墙

C.小鸟远离幕墙过程中,“身影”逐渐变小

D.“身影”到幕墙的距离大于小鸟到幕墙的距离

8.下列有关光现象的解释,正确的是( )

A.雨后彩虹是光的反射现象

B.城市玻璃幕墙造成的“光污染”是光的折射现象

C.白光通过三棱镜可以分解成红、橙、黄、绿、蓝、靛、紫等七色光

D.电影屏幕制成白色是因为白色吸收各种色光

9.如右图所示,乙容器内盛有水,甲容器盛有右表所列的一种液体。在一个标准的大气压下,对甲容器的底部持续加热,最终发现乙容器内的水沸腾了。则甲容器内盛的液体是( )

A.液态氨 B.酒精

C.水 D.煤油

10.夜晚,当汽车发出的光照射到自行车尾灯上时,司机看到尾灯反射的光,就能及时避让。下图中有关自行车尾灯的光路图正确的是( )

11.从岸边看水中的鱼,看到“鱼”的位置与实际位置不同。下列模型能解释此现象的是( )

12.如图所示,一束激光AO由空气斜射入玻璃砖,折

射后从另一侧面射出,其出射点可能是图中的( )

A.M点

B.N点

C.P点

D.Q点

13.下列关于运动和静止的说法正确的是 ( )

A.人在上升的电梯中,以地面为参照物,人是静止的

B.月亮在云中穿行时,以云为参照物,月亮是运动的

C.飞机在空中加油时,以地面为参照物,受油机是静止的

D.漂流而下的小船,以河岸为参照物,小船是静止的

14.《龟兔赛跑》的寓言故事大家都非常熟悉。乌龟和兔子同时从起点跑出,骄傲的兔子在遥遥领先的情况下,睡起了大觉,醒来后跑到终点,发现坚持不懈的乌龟获得了冠军。对整个赛跑过程而言,下列运动图像正确的是(其中实线表示兔子,虚线表示乌龟)( )

二、填空题(每空1分,共32分)

15.一切发声的物体都在_______。如图是工人师傅用一把螺丝刀探听电动机内部运转是否正常的做法,该现象说明_______可以传声;通过听到的声音可以判断电动机内部运转是否正常,这是利用了声音可以传________(填“能量”或“信息”)。

16.“神州七号”的宇航员_________(选填“能”或“不能”)在太空中用声呐装置测量飞船和地面的距离。原因是 。

17.如右图所示,刻度尺的分度值值为 mm,木块的长度为 cm。

18.验钞机发出的____________能使钞票上的荧光物质发光;家用电器的遥控器发出的____________能用来控制电风扇、电视机、空调器等。

19.某种物质在熔化过程中温度随时间变化的图象如右图所示,这种物质是______(填“晶体”或“非晶体”),该物质的熔点是 ℃,熔化的时间是______min。

20.观察细胞等微小物体,要用 ;观察较远处的物体和天体的运动要用 。

21.星期天,小明约小刚逛公园。在游玩时看见了一些现象,他俩从物理角度议论起了下列问题。

(1)阳光下,小明看见自己在地面上留下了影子,可以用光的 知识来解释。看见公园中红色的花朵,是因为花朵_______(填“反射”或“吸收”)红色光的缘故。

(2)来到湖边,小刚看见湖水中的鱼在蓝天白云间游弋。看见的鱼是光的 形成的像,看见的蓝天白云是光的________形成的像。

(3)若湖中的水深1m,则白云形成的像到水面的距离_________1m。(填“大于”、“小于”或“等于”)

22.右图是小磊同学看远处物体时的光路图,由图可知他是__________(填“近视”或“远视”)眼,如需矫正视力,他应选用的镜片是__________透镜。

23.我们常用“频闪照片”来研究物体的运动。如右图所示,记录了甲、乙两个运动小球每隔 秒的不同位置。根据底片可以判断,_____球运动时间长,_____球作变速直线运动(全部选填“甲”或“乙”)。

24.下图甲是一支常见体温计的示意图,它是利用液体_________________的性质制成的,分度值为0.1℃,由此可知体温计的测量结果比实验用温度计更精确。但由于液柱太细难以准确读数,所以体温计具有特殊构造,其横截面如图乙所示,a为向外凸起的弧形玻璃面,要看清体温计中液柱的位置就应沿______方向观察(填“A”、“B”或“C”)。甲流期间的一天清晨,量出小明同学的体温如下图甲所示,则他的体温为_______℃,由于一时疏忽,忘记甩一下就直接测量小军的体温,结果如下图丙所示,则测量的结果__________(选填“准确”或“不准确”)

25.11月3日凌晨,神舟八号和一个月前发射升空的天宫一号完成首次交会对接任务,这一对组合体将携手遨游太空两周(见下图甲)。

(1)对接完成后,以天宫一号为参照物,神州八号是____(选填“静止”或“运动”)的。

(2)两个重达8吨多的庞然大物都是用“长征二号”运载火箭送入太空的。运载火箭的头部涂有一种特殊材料的保护层,它在与空气作用升温后会熔化,并迅速_______(填物态变化名称),_______(选填“吸收”或“放出”)了大量的热,而自身的温度却不再升高,从而保护了火箭。

(3)上图乙是安装在神州八号轨道舱内的摄像机拍摄到的对接过程中的天宫一号,摄像机的镜头是一个_______透镜。通过摄像机镜头所成的是一个_______(选填“正”或“倒”)立的像。

三、解答题(共40分,解答32题时应有解题过程)

26.(6分)按照题目的要求作图:

(1)如图甲所示,SA、SB是光源S发出的两条光线.其中SA平行于主光轴,SB过左焦点,请画出这两条光线通过凸透镜后的出射光线。

(2)如图乙所示,考古人员需要对一口古井进行清理,为了解决照明问题,请你帮他们把太阳光反射到井里,并能垂直照亮井底。

(3)现在时刻是下午的2点40分,请在丙图画出此刻从时钟正对面的镜子里看见的'时针和分针的位置。(说明:①注意分针要比时针长;②时针只要画在对应的区间范围内即可。)

27.(7分)在“观察水的沸腾”的实验中:

(1)请你指出图甲中实验操作错误之处是 。

(2)改正错误后,继续实验。当水温升高到90℃时,每隔1min记录一次水的温度,直到水沸腾后再持续几分钟为止。数据记录如下表:

时间/min 0 1 2 3 4 5 6 7 8

温度/℃ 90 92 96 98 98 98 98 98

①第2min温度计示数如上图乙所示,此时水的温度是 ℃;

②上面右图________(填“a”或“b”)是水在沸腾时的情况。分析表中数据可知:此时水的沸点为________℃。

(3)水在沸腾过程中,温度将 (填“升高”、“降低”或“不变”),并看到有“白气”不断从烧杯中冒出,这些“白气”是由于水蒸气 (填写物态变化名称)而产生的。

(4)为了方便读出温度计的示数,某同学将温度计从水中拿出来进行观察读数,则会导致所测温度偏_______(填“高”或“低”)。

28.(7分)如图所示,在探究“平面镜成像的特点”实验中,桌面上已给出的器材有:带支架的玻璃板、铅笔各一个;完全相同的蜡烛两个;白纸一张;火柴一盒。

(1)为完成实验,还需要的实验器材是 。

(2)放置玻璃板时,应该使玻璃板与水平桌面 。 .

(3)实验中取两段完全相同的蜡烛是为了比较像与物的 关系。

(4)做完某次实验后,四个小组都将收集和处理的信息记录在白纸上,如下图所示。则正确的是 。

(只有一个选项正确,将正确选项的字母填在横线上)

(5)实验中,看到点燃的蜡烛通过玻璃板成两个像,其中距离观察者较远的像较暗。远处的像是来自于蜡烛的入射光经过玻璃板 (只有一个选项正确,将正确选项的字母填在横线上)。

A.一次反射、一次折射形成的 B.两次反射、一次折射形成的

C.两次反射、两次折射形成的 D.一次反射、两次折射形成的

29.(8分)小明同学用凸透镜、蜡烛、光屏和光具座等器材完成“探究凸透镜成像规律”的实验。

(1)为了测出凸透镜的焦距,小明将凸透镜正对太阳光,用一个光屏在透镜的另一侧移动,直到光屏上得到一个最小最亮的光斑,这说明凸透镜对光线有_________作用,测出光斑到凸透镜的距离为10cm,则该透镜的焦距为_________cm。

(2)小明将蜡烛、凸透镜、光屏依次放在光具座上,点燃蜡烛后,无论怎样移动光屏都不能在光屏上得到像,请你指出其中一条可能的原因:__________________________。

(3)重新调整后,将蜡烛放在下图中的A位置上,光屏在B位置上,为了找到清晰的像,应将光屏向_______(填“左”或“右”)移动。

(4)依次改变蜡烛的位置,移动光屏,直到找到清晰的像。记录的数据如下表。

次数 1 2 3 4 5 6

物距(cm) 40 35 30 25 20 15

像距(cm) 13.5 14 15 16.7 20 30

①在1—4次实验中,所成的像为倒立、_______的实像。

②第6次的像比第5次的_______ (填“大”或“小”)。

(5)将蜡烛放在上图中的C点,观察到烛焰的正立、放大的虚像后,若希望看到更大的虚像,应将蜡烛向_______(填“左”或“右”)移动。

(6)小明还想知道蜡烛火焰与光屏上成的像是否左右颠倒.请你帮他设计实验。

你的设计方法是: 。

30.(3分)下表列出的是在进行探究实验时遇到的一些实际问题,请你把解决问题的方法填写在表中对应的空格里。

实际问题 解决方法

在探究的声音产生实验中,拍桌子时桌面的振幅太小,不便于观察

为探究光在空气中的传播情况,按亮激光小手电,但不能观察到光的传播路径

手里仅有一把分度值为1mm的刻度尺,无法直接测量物理课本一张纸的厚度

31.(5分)在学校的橱窗里贴出了一个通知,如右图所示,小聪和小明积极的谈论这个问题:

(1)理论上要测量降落伞的下落速度,需要测量的物理量有: 、_____________。

(2)实际比赛时只要让降落伞统一从教学楼五楼飘下,记录降落伞从开始飘下到着地的时间,即可判断哪个降落伞下落得慢。这是通过相同____________比较______________来判断降落伞下落的快慢。

(3)如果要想在比赛中取胜,可以对降落伞进行改造,请你帮他们出谋划策:

。(只要写出一点)

32.(4分)从上海到南京的D412次列车组列车运行时刻表如下所示。

时间 上海 苏州 常州 南京

到站时间 09:51 10:33 11:45

发车时间 09:15 09:53 10:35

里程/km 0 84 300

(1)列车由上海驶往南京全程的平均速度为多少?

(2)若该列车从苏州到常州的平均速度为130km/h,则苏州到常州的里程

篇3:初二物理下册期末试卷及答案

13.(天津)滑雪运动员从山顶加速下滑的过程中,他的( )

A、重力势能增加,动能增加 B、重力势能减少,动能减少

C、重力势能增加,动能减少 D、重力势能减少,动能增加

14.(临沂)两名举重运动员,甲比乙高,如果他们举起相同质量的杠铃所用的时间相等,如图所示,则( )

A.甲运动员做功较多,功率较小

B.甲运动员做功较多,功率较大

C.甲运动员做功较多,

他们的功率相等

D.甲、乙运动员做功相等,功率相等

15.(2008常州)中考体育跳绳项目测试中,小明同学在lmin内跳了120次,则他跳绳时的功率大约是

A. 0. 5 W B. 5 W C. 50W D. 500 W

解析:本题是一道估算题,先估体重、跳绳高度。再计算。小明体重约500N,每次升高5cm,P=W/t=Gh×120/60s=50W

16.(2011莆田)质量较大的鸽子与质量较小的燕子在空中飞行,如果它们的动能相等,那么( )

A、燕子比鸽子飞得快 B、鸽子比燕子飞得快

C、燕子与鸽子飞得一样 D、两者速度大小无法比较

17.(2011桂林)图5是小明在体育考试中测试“引体向上”时的示意图。关于“引体向上”,下列说法中

正确的是(D )

A.身体悬挂不动时,势能为零

B.身体上升时,重力做功,势能减少

C.身体下降时,重力做功,势能增加

D.身体上升时,克服重力做功,势能增加

18.(2011绍兴)如图甲所示,质量不计的弹簧竖直固定在一压力传感器上,压力传感器是电阻阻值随受到压力的增大而减小的变阻器(压力不超过最大值),压力传感器、电流表、定值电阻和电源组成一电路。压力传感器不受力时电流表示数是I0。t=0时刻,将一金属小球从弹簧正上方某一高度由静止释放,小球落到弹簧上压缩弹簧到最低点,然后又被弹起离开弹簧,上升到一定高度后再下落,如此反复。整个过程中,不计能量损失,电流表示数I随时间t变化的图像如图乙所示,则( )

A.t1时刻,小球动能最小

B.t2时刻,弹簧的弹性势能最小

C.t2~t3这段时间内,弹簧的弹性势能先增加后减少

D.t2~t3这段时间内,小球增加的动能小于弹簧减少的弹性势能

二.填空题(每空1分,共22分)请把答案直接填在题中横线上的空白处,不要写出演算过程。

19.(2011柳州)由于地球的吸引而使物体受到的力叫做________力.一切物体在没有受到力的作用时,总保持__________状态或匀速直线运动状态,这就是牛顿第一定律。行驶的汽车突然刹车时乘客会向前倾倒,这是因为乘客具有___________。

20.(?哈尔滨)鱼缸中装满水,在水中轻轻放入一只小船,小船漂浮在水面上,从鱼缸中溢出5×104m3的水,则小船受到的浮力是___________N,小船所受的重力与浮力的关系是___________(g=1O N/kg).

21.(2011攀枝花)云南盈江地震中,一块体积为0.1m3的石头从崖上滚落水中(完全浸没),则它受到的浮力大小约为______N。(g=10 N/kg)

22.(2011南充)质量为120g、体积20cm3的物体挂在弹簧测力计上,再把物体浸没在某种液体中,弹簧测力计的示数是1N,物体受到的浮力为____N,液体的密度为____kg/m3。

23.(2012南京)用手将一重为5N的物体全部压入水中,物体排开的水重8N,此时物体受到的浮力为___________N,放手后物体将___________(选填“上浮”、“下沉”或“悬浮”),待物体静止时所受浮力为___________N,排开水的体积是___________m3。

24.(2008广安)俄制米一26TS是世界上最大的重型直升机,它在四川地震灾区唐家山堰塞湖应急疏通工程完成后的撤离行动中,把重约14t的挖掘机在30s内匀速提升到距工地600m的空中,在这个过程中它对挖掘机所做的功是______ J,功率是____________ W(g=1ON/kg)。

25. (2011烟台)如图14所示,轻质杠杆OA中点悬挂重为60N的物体,在A端施加一竖直向上的力F,杠杆在水平位置平衡,则力F的大小是_______________,保持F的方向不变,将杠杆从A位置匀速提升到B位置的过程中,力F将_____________(选填“变大”、“变小”或“不变”).

26.(衢州卷)如图所示为钓鱼竿钓鱼的示意图,O为支点,F1表示手对钓鱼竿的作用力,请完成下列问题:

(1)在图中画出鱼线对钓鱼竿拉力F2的力臂l2;

(2)钓鱼竿属于________杠杆

(选填“省力”、“费力”或“等臂”)

(27题)

27. (2011德州)刘佳的妈妈从超市买回一袋胡萝卜,刘佳捡了一个最大的用细线系好挂在弹簧测力计上(如图11所示)。胡萝卜重为 N,如果在系线处将胡萝卜切成两段,则GA_______GB(选填“大于”、“小于”或“等于”)

28. (2011内江) 204月12日,人类首位宇航员一一加加林进入太空50周年庆祝大会在俄罗斯隆重举行。如果通过宇航员把物体从地面带到太空后,那么,物体的质量将 (选填“不变”、“增加” 或“减小”) ,物体 (选填“有”或“没有”)机械能。

三、作图题(4分)

29.(2011青海)如图是盛有水的杯子静止在斜面上,画出小球静止时的受力示意图。

四、实验探究题(6分)

30.(衢州卷)将不易直接测量的量转化为可感知、可量度的量,这是一种常见的科学研究方法。请分析回答:

(1)在“研究影响摩擦力大小的因素”的实验中(如图甲所示),用弹簧测力计拉动木块时,必须让木块在水平面上做 ________ 运动,通过弹簧测力计上的示数可得知摩擦力的大小;

(2)在“研究物体的动能跟哪些因素有关”的实验中(如图乙所示),将质量不同的小钢球从同一斜面、相同高度由静止开始沿斜面滚下,通过比较同一木块被小钢球推动后 ________ ,可判断出小钢球刚滚到水平面时动能的大小。

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篇4:初三物理上册期末试卷及答案

初三物理上册期末试卷及答案

一、填空题(每空1分,共24分)

1、有一种“太阳池”,池内下层是浓盐水,上层是淡水。阳光照射时,浓盐水的内能增加,

___________升高,但不会浮到淡水上面散热,是因为浓盐水的______________比淡水大。浓盐水积聚的内能可以通过发电机转化为______能。

2、科学家发明了一款单缸六冲程内燃机,它每一个工作循环的前四个冲程与单缸四冲程内燃机相同,在第四冲程结束后,立刻向气缸内喷水,水在高温气缸内迅速汽化成高温、高压水蒸气,推动活塞再次做功,水蒸气温度________(选填“升高”、“降低”或“不变”),其内能________(选填“增大”、“减小”或 “不变”),这样燃烧同样多的燃料获得了更多的机械能,提高了热机的________,为进入下一个工作循环,这款内燃机的第六冲程是____________冲程。

3、如图1甲所示的电路中,电压表所用的量程不明,当开关闭合后,V1和V2的示数如图乙所示,则V1

的量程是________V,V2的量程是__________V,小灯泡L1上的电压U1=_________V。

4、电阻R1、R2串联在电路中,已知R1:R2=3:2,则通过两电阻的电流之比I1:I2=_________,电阻两端的电压之比U1:U2=_________,两电阻消耗的电功率之比P1:P2=________。

5、如图2所示电路,电阻R1=R2=4Ω,电源电压保持不变,当S1、

S2都闭合时,电流表的示数为0.75A,此时电路是______联电路

电路的总电阻是_______Ω;当S1闭合、S2断开时,电路的总电阻

是______Ω,电流表的示数是_________A。

6、图3甲的电路中,电源电压恒为12V,滑动变阻 器

的铭牌上标有“100Ω 0.5A”字样,图乙为R1的I-U

图像,R1的阻值为______Ω。当电路中电流为0.2A时,

滑动变阻器R2接入电路的阻值为_______Ω。为了不

损坏滑动变阻器,R2接入电路的阻值应不小于____Ω。

7、下课后王老师去关闭微机房的总电闸时,发现如图4所示的电能表转盘在缓慢转动,他利用手表估测了一下,2min转盘转动了5转,那么2min内消耗了________J电能;经检查发现,原来机房内还有20台型号相同的电脑显示器处于待机状态。则一台电脑显示器的待机功率约为_______W。

8、正在厨房洗菜的小丽突然看到旁边的电水壶中的水烧开了,她立即伸手去拔水壶的电源插头,她这样做安全吗? 。

原因是 。

二、选择题(本题包括9个小题,每小题3分,共27分;其中9~14小题为单选题,15~17小题为多选题。对于多选题,漏选得2分,错选、多选得0分.请将正 确选项前的字母填在下面的表格中)

9、关于温度、内能和热量,下列说法正确的是

A、物体内能增大,一定从外界吸收热量

B、汽油机在做功冲程中把机械能转化为内能

C、物体内能减少时,温度可能不变

D、锯条锯木板时,锯条的内能增加,木板的内能减少

10、如图5所示,要使灯泡L1和L2组成并联电路,应

A、只闭合S2

B、只闭合S3

C、只闭合S1和S3

D、只闭合S2和S3

11、下列现象中,不能用静电知识解释的是

A、晚上脱化纤毛衣时会有火花产生

B、油罐车尾部常拖一条铁链

C、通信卫星采用硅光电池板提供电能

D、电视机屏幕上会吸附灰尘

12、如图6所示的电路中,各个元件均能正常工作。当开关闭合后,下列说法正确的是

A、两表指针有明显偏转

B、两表指针几乎不动

C、电流表指针有明显偏转,电压表指针几乎不动

D、电压表指针有明显偏转,电流表指针几乎不动

13、下列各电路元件中,阻值最大的是

A、实验室用的铜导线

B、实验室用的小灯泡X

C、家用普通白炽灯泡

D、试电笔中和氖管串联的电阻

14、如图7所示电路中,电源电压保持不变,闭合开关S1、S2,两灯都发光,当把把开关S2断开时,灯泡L1的亮度及电流表示数的变化情况是

A、L1亮度不变,电流表示数变小

B、L1亮度不变,电流表示数不变

C、L1亮度增大,电流表示数不变

D、L1亮度增大,电流表示数变小

15、下列现象中不属于通过热传递改变物体内能的是

A、反复弯折后,铁丝的温度升高

B、火车经过后,铁轨的温度升高

C、用火炉烧水,水的温度升高

D、两手相互搓揉,手掌发热

16、如图8甲所示,R1为定值电阻,R2为滑动变阻器,电源电压恒定。闭合开关S,调节滑动变阻器滑片,R1、R2两端的电压U1、U2与电流I的变化关系图像如图乙所示,其中正确的是

17、小灯泡L上标有“2.5V”字样,它的电阻随它两端电

压变化的图像如图9甲所示。将小灯泡L和电阻R0接入

图乙所示的电路中,电源电压为6V,且保持不变。当开

关S闭合时,小灯泡L恰好能正常发光。下列说法正确

的是

A、开关S断开时,小灯泡L的电阻为0Ω

B、开关S闭合时,小灯泡L的电阻为10Ω

C、小灯泡L的额定功率为0.625W

D、电阻R0的阻值 为14Ω

得分 评卷人

三、作图题(本小题包括3个小题,每小题3分,共9分)

18、根据图10所示实物图在虚线框内画出相应的电路图。

19、按要求把如图11所示的实物元件连接起来,使小灯泡L1和L2并联,电流表测量电路的总电流,开关控制整个电路。

20 、请将如图12所示元件,连成符合安全用电要求的家庭电路。

四、简答题(4分)

21、近年来,不少城市加强了环境的改善和美化,清理疏通河道、开发人工湖、大幅度增加绿地面积。请你从物理知识角度,谈谈这样做对调节气温有什么好处?

五、计算题(本题包括3个小题,共21分。要求写出必要的文字说明、公式、计算过程、数值、单位和答)

22、(4分)小明同学家原来用液化石油气烧水,每天约用60℃的热水100kg。他参加“探究性学习”活动后,在老师指导和同学帮助下,制作了一台简易的太阳能热水器。

(1)若这台热水器夏天平均每天可将100kg的水从20℃加热到60℃,吸收的热量为多少?

(2)若液化石油气燃烧放出的热量有70%被水吸收,他家改用太阳能热水器后,平均每天可节约液化石油气多少千克?(液化石油气的热值为8.0×107J/kg)

23、(8分)如图13所示,电源电压为6V。闭合开关S,电压表V1示数为4V,电流表示数为0.4A。

求:(1)电压表V2的示数。

(2)R1、R2的阻值。

24、(9分)如图14甲所示电路,电源电压为9V且保持不变,小灯泡标有“6V 6W”的字样,小灯泡的电流随电压的变化曲线如图乙。求:

(1)小灯泡正常发光时电阻为多少欧?

(2)当电流表的示数为0.7A时,小灯泡的电功率为多少瓦?

(3)当电压表的示数为2V时,整个电路10s内消耗的电能是多少焦?

六、实验、探究题(本题包括5个小题,共35分)

25、(7分)如图15所示,某同学将两个相同的斜面并排放在水平桌面上,利用他们探究动能或重力势能与哪些因素有关。

(1)将A、B两球(mA<mB)分别从两斜面的相同高度处由静止

同时释放,观察它们并排滚动且始终相对静止。这表明在滚动的

任一时刻,两球的 速度_________,且两球的速度跟_________无关。

(2)分别在水平桌面上的C、C′处放置相同的木块,再将两球分别从两斜面的相同高度处由静止同时释放,观察到________球将木块撞得更远。由此可得出结论:

26、(4分)在“探究影响导体电阻大小的因素”实验中,小刚设计了如图16的电路。

(1)在连接电路时发现,还缺少一个元件,他应该在电路中再接入

的元件是________。

(2)为粗略判断a、b两点间导体电阻的大小,可观察___________________________。

(3)另有甲、乙两位同学分别对小刚的电路作了如下改进:甲把灯泡更换为电流表;乙在原电路中串联接入电流表。你认为_________同学的改进更好一些,理由是

27、(8分)在探究“电流与电压、电阻的关系”的过程中,两小组同学提出了以下猜想:

小组1猜想:电流可能跟电压成正比 ;

小组2猜想:电流可能跟电阻成反比。

(1)小组1的做法是:按图17 所示连接电路,此时开关应处于________(填“断开”或“闭合”)状态。保持定值电阻R=10Ω不变,闭合开关S后,调节滑动变阻器R′,得到多组数据。在分析数据的基础上得出正确结论。

(2)小组2连接了如图18所示的电路。

正确的实验步骤为:

① 将5Ω电阻接入电路,调节滑动变阻器,使电压表示数为1.5V,记下电流表示数;

② 将5Ω电阻换成10Ω电阻,闭合开关后发现电 压表示数大于1.5V,应将滑动变阻器的滑片向_______(填“左”或“右”)移动,当观察到电压表示数为_______V时,记下电流表示数;

③ 将10Ω电阻换成15Ω电阻,闭合开关后发现:当滑动变阻器的滑片移动到最右端时,电流表和电压表的示数如图19所示。出现上述情况的原因可能是( )

A、滑动变阻器最大阻值太大

B、滑动变阻器最大阻值太小

C、滑动变阻器断路

D、定值电阻短路

28、(10分)某实验小组的同学用伏安法测量小灯泡电功率,待测小灯泡额定电压为3.8V,小灯泡的额定功率估计在1W左右。

(1)连接电流表时应选用____________的量程。

(2)请用笔画线代替导线,完成图20甲所示实物电路的连接(要求:连线不得交叉)。

(3)检查电路连接无误,闭合开关后,灯泡不亮,电压表有示数,电流表指针几乎不动,产生

这一现象的原因可能是

(4)故障排除后,移动滑动变阻器的滑片,使小灯泡正常发光时,电流表示数如图20乙所示,请读出电流表的示数,并填入表格中。

(5)实验中,同学们记录了多组小灯泡两端的电压及对应通过小灯泡的电流值,但表格中仍有不完整的地方,请将所缺内容填写完整。

电压U/V 1.0 1.5 2.0 2.5 3.0 3.8 4.0

电流I/A 0.18 0.2 0.22 0.25 0.28 0.32

电功率P/ 0.18 0.3 0.44 0.625 0.84 1.28

灯泡发光情况 很暗→暗→正常发光→很亮

(6)小组同学们分析了实验数据得出:小灯泡的发光亮度是由灯泡的_________决定的,且__________ _______________________________,灯泡发光越亮。

29、(6分)为了探究影响电热的因素,小伟设计了如图21所示电路,烧瓶中盛有质量、初温均相等的煤油,R甲>R乙。

(1)为了在较短的'时间内达到明显的实验效果,选用煤油而不是用水,主要是由于

(2)通电一段时间后,比较两烧瓶中温度计的示数,是为了探究电热与__________的关系。

(3)要利用此装置来探究电热与电流的关系,你还需要的操作是

(4)将此装置改装后可测量煤油的比热容,如图22所示。测量时,分别向两个相同的烧瓶中加入初温均为t0、质量相等的水和煤油,通电一段时间后,分别读出温度计的示数为

t水、t煤油,请写出煤油比热容的表达式c煤油=

(已知水的比热容为c水)。

九年物理答案

一、填空题:(每空一分)

二、选择题X k B 1 . c o m

题号 9 10 11 12 13 14 1 16 17

答案 C C C D D A ABD BC BCD

三、作图题

18、(略) 19、(略) 20、(略)

四、简答题

21、答:增大绿地面积和水域面积后,水的蒸发量增大,蒸发是吸热过程,在炎热的季节可降低气温(2分)。另外,由于水的比热容大,在同样受热和冷却的情况下,水的温度变化小,使气温不至太高或太低(2分)。

五、计算题

23、解:(1)由串联电路的规律可知U2=U-U1=6v-4v=2v (2分)

(2)由I=U/R得R1=U1/I1=4V/(0.4A)=10Ω (3分)

R2=U2/I2=2V/(0.4A)=5Ω (3分)

答:电压表V2的示数是2V,R1的阻值是10Ω,R2的阻值是5Ω.

24、解:(1 )由图乙可知当U=6V时,I=1.0A

则小灯泡正常发光时的电阻R0=U/I=6V/1.0A=6Ω (3分)

(2)由图乙可知,当I=0.7A时U=3V

小灯泡的实际电功率P实=UI=3V×0.7A=2.1W (3分)

(3)由图乙可知,当U=2V时I=0.5A

则电路消耗电能W=UIt=9V×0.5A×10S=45J (3分)

答:小灯泡正常发光时的电阻为6Ω;小灯泡的实际电功率为2.1W;电路消耗的电能为45J。

五、实验、探究题

25、(1)相同(1分)质量(1分)

(2)B(1分)

①运动速度相同的物体,质量越大,它的动能越大(物体的动能与它的质量有关)(2分)②高度相同的物体,质量越大,它的重力势能越大(物体的重力势能 与它的质量有关)

篇5:物理期末试卷答案

一、选择题(每小题3分,共21分。每小题只有一个正确答案)

题号 1 2 3 4 5 6 7

答案 B A C C B D C

二、填空题(每空1分,共25分)

8.2.5×10-6m

9.固体;快 ;响度;音色;音调

10.凝华; 内; 凝固

11.镜面; 虚像; 折射; 直线传播

12.紫外线;反射

15.10 ; 0.01 ; 大 ; 10 ; 变小 ; 状态

三、作图题(每题3分,共6分)

四、简答题(共4分)

18.前窗玻璃上的雾气是由于车内空气中的水蒸气遇到温度较低的玻璃,放出热量液化形成小水珠;(2分)对着车窗玻璃吹暖风,可以提高小水珠温度,加快小水珠表面空气流动速度,(1分)从而加速小水珠蒸发成水蒸气,车窗玻璃就清晰了。(1分)

五、计算题(共17分)

19.解:岸上仪器接收到地震发出的次声波的时间:

∵v=s/t……………………………………………………………(1分)

∴ t声=s海/v声=340000m/(1700m/s)=200s…………………(3分)

海啸巨浪登岸的时间:

t海浪=s海/v浪=340000m/(200 m/s)=1700s;…………………(3分)

岸上仪器从接收到地震发出的次声波到海啸巨浪登浪的时间:

t=t海浪-t声=1700s-200s=1500s……………………………………(1分)

答:岸上仪器从接收到地震发出的次声波到海啸巨浪登浪的时间为1500s。

(3) V空 = V - V实 = 600 cm3 - 50cm3 = 550 cm3……………………(1分)

m水 = ρ水×V空 = 1g/ cm3×550 cm3=550g…………………………(1分)

m总 =m壶 + m水 =150 g +550g=700 g……………………………(1分)

六、实验探究题(每空1分,共27分)

21.(1) 小 (2)4.00;0.03 (3) 大

22.(1)230℃;(2)BC;EF;(3)4;吸;不变;(4) 固;液;固液共存;

23.(1) 使像成在光屏中央;(2) 缩小;实;照相机;正立;放大;(3) D;(4) D

24.(1) 零刻线;平衡螺母;左;(2) 40;48;(3) 1.2 ×103kg/m3

篇6:初二英语上册期末试卷及答案

一、听力(20’)

听对话,根据所听对话及问题选择正确答案。(听两遍)

6. When is the woman’s birthday?

A. On December 24. B. On December 25. C. On December 26.

7. Where were the woman and her father four years ago?

A. In China. B. In England. C. In America.

8. Where are the two speakers?

A. In the bus. B. At the bus stop. C. In the Children’s House.

9. Who runs the most slowly?

A. Lucy. B. Lily. C. Kate.

10. Why was the man late for school?

A. He didn’t catch the bus. B. He got up early. C. He had his breakfast.

听短文,回答问题。(听两遍)

11. When do tigers live as a family?

A. When they have wives B. When they have babies

C. When they have sisters or brothers

12. Who teaches baby tigers to catch other animals?

A. mothers B. fathers C. teachers

13. How do wolves hunt?

A. hunt alone B. hunt together C. hunt with other animals

14. What do tigers usually eat?

A. small animals B. big animals C. other animals

15. How do people feel when they see wolves?

A. happy B exciting C. afraid

听对话,完成信息表:

Charlie’s Free Time

Five years ago Now

He had much free time. He played 16 a lot, watched TV for about 17 hours and played soccer every day. He has a lot of homework and can’t do many 18 things. He can 19 only once a week.

One thing is the same: he does some 20 at the weekends.

16.Charlie played ______ a lot in his free time.

A.basketball B.games C.tennis

17.Five years ago, he watched TV for about ________ hours every day.

A.four B.fourteen C.forty

18.Now he’s too busy doing his homework to do many _______ things.

A.fun B.useful C.meaningful

19.He can _______ only once a week.

A.skate B.sing C.swim

20._______ is the thing he did in the past and still do now.

A.Cooking B.Reading C.Swimming

二、选择题(20’)

( )21.We all believe _______,because she is ______honest girl.

A. the words she says; a B. what she says; an

C. what does she say; a D. she says what; an

( )22.Max often ______our books and pens ______the floor, when he ______our desks.

A. knocks, onto; walks past B. knock, onto; walks passed

C. knocks, off; walks past D. knocks, off; walks passed

( )23.He left home ______a cold morning, and I heard that he was coming back _____ the late afternoon.

A. in; on B. on; on C. in; in D. on; in

( )24.—I’m going on a trip to Beijing.

A. It’s nice of you B. Have a good time

C. OK. That’s all right D. Congratulations

( )25. —Could I _______a book from you?

—Of course. And you mustn’t_______ it to others.

A. borrow; lend B. lend; borrow C. keep; lend D. borrow; keep

( )26.Tom______half an hour doing his homework and listening to pop music ______him 20 minutes.

A. costs; spends B. spends; take C. takes; costs D. spends; takes

( )27.What exactly does the sign _______?

A. stand for B. stood for C. stand up D. stood up

( )28.Please_______the painting on the wall and _______the washing machine later.

A. put up; put in B. put out; put in C. put in; put up D. put up; put down

( )29.Bees always remember ________back the same way _______they went.

A. coming; from B. coming; as C. to come; as D. to come ;from

( )30. —____________?

—It was sunny and windy.

A. What was the weather B. What was the weather like

C. How was the temperature D. What was the temperature

( )31.______nature reserves _______us learn more about protecting animals.

A. Studying ; help B. Studies ; helps C. To study; helping D. Studying; helps

( )32.Good hotels can provide us _______hot water even at night. And it can also provide food ______us any time.

A. for; for B. with; with C. with; for D. for; with

( )33._______animals are in danger and there will be _______space for them if we do nothing for them.

A. More and more; less and less B. Less and less; more and more

C. Fewer and fewer; more and more D. More and more; more and more

( )34.______useful advice we had in the meeting last week!

A. What a B. What C. How a D. How

( )35.The sentence structure of “Eddie is watching Hobo work”.

A.S+V+O B.S+V+P

C.S+V+IO+DO D. S+V+DO+OC

( )36.Not only you but also Mary ______to ______after-school activities.

A. hope; join B. hopes; join

C. hope; take part in D. hopes; take part in

( )37.On our way home, our bikes______, so we had to walk home.

A. is broken B. was broke C. broke down D. breaks down

( )38.The earthquake hurt ______people and more than 35000 got badly hurt.

A. thousands B. two thousands C. thousands of D. thousand of

( )39.There are pieces of glass and bricks on the road.

Would you please _______with me?

A. move it away B. to move it away

C. move them away D. to move them away

( )40.—_____anyone hurt in the big fire?

—No, everybody was OK.

A. Does B. Was C. Did D. Do

三、完形填空(15’)

A man with a green bag walked into a doctor’s room. “Please sit down. Open your mouth and 41 your tongue(舌头),”the doctor said, “OK. You can 42 your mouth now. It’s clear something is 43 with you. You have to do more exercise.”

“But, doctor,” the man said. “I don’t think…”

“Don’t tell me what you 44 ,” the doctor said. “I am the doctor, not you. I know 45 you need. I see hundreds of people like you. None of them get any exercise. They 46 in offices all day and in front of the television in the 47 .What you need is to walk quickly for at least 30 48 a day.”

“Doctor, you don’t understand,” the man said. “I…”

“I don’t want to hear any 49 ” the doctor said. “You must find time for exercise. If you don’t, you will get 50 and have health problems when you are older.”

“But I walk every day.” the man said.

“Oh, yes, and I know what kind of walking that is. You 51 a few meters to the train station from your house, a few more meters from the station to your office, and a few more meters from your office to a 52 for lunch and back.”

“Please listen to me, doctor!” the man shouted, getting 53 .

“I’m a mailman.” the man continued, “I walk for seven hours every day and I come to 54 letters.”

For a moment, the doctor said nothing, and 55 he said slowly, “Put your tongue out again, will you?”

( )41.A. put on B. put out C. put away D. put off

( )42.A. open B. close C. fill D. try

( )43.A. wrong B. strange C. nice D. exciting

( )44.A. discuss B. talk C. think D. meet

( )45.A. how B. why C. where D. what

( )46.A. eat B. stand C. run D. sit

( )47.A. evening B. afternoon C. noon D. morning

( )48.A. seconds B. minutes C. hours D. days

( )49.A. news B. advices C. excuses(借口) D. messages

( )50.A.thin B. healthy C. fat D. strong

( )51.A. walk B. drive C. run D. fly

( )52.A. office B. school C. restaurant D. factory

( )53.A. sad B. excited C. surprised D. angry

( )54.A. get B. send C. bring D. have

( )55.A. or B. so C. but D. then

四、阅读理解(40’)

56. New York Museum is closed on .

A. Monday B. Friday C. Saturday D. Sunday

57.Tommy is an 8-year-old boy.He wants to visit The City Flower Show with his parents.How much will they pay?

A. 125yuan B. 100 yuan C. 75 yuan D. 150 yuan

58. If you want to get more information about English Summer Camp, you can .

A. go to Canada B. write to CEE/CCIEE

C. call at (010) 66062607 D. send an e-mail to University of Toronto

59. will give performances in Pop Music Week in Chaoyang Park.

A. Bands B. Dancers C. Singers D. Both A and C

60. Phillip,twenty years old, is not allowed to .

A.The City Flower Show B. English Summer Camp

C. New York Museum D.Pop Music Week

It is not a good idea for children to have to work hard. Children should study in school as hard as they can. They should not have to do heavy work with their bodies. When parents or others force(强迫)their children to work hard, the results are never good. Many may be very bad. If a farmer makes his son work like a man, he may easily learn to hate farming.

Children sometimes do too much in gardens, in shops, or even in their own homes. They soon begin to hate such work with a force, because that can destroy their happiness. But there may be a worse loss, child’s love for its parents. The feeling may become something different. When that happens, the old kind of love never returns.

( )61.It is not a good idea for _______to have to work hard.

A. men B. women C. children D. boys

( )62.Children should study in school _______.

A. hard B. easy C. happy D. early

( )63.Children should not have to do _______work with their bodies.

A. easy B. good C. heavily D. heavy

( )64.The writer thinks children should study and play _______.

A. hard B. happily C. heavily D. happy

( )65.The writer thinks children’s parents or others don’t force their _______to work hard.

A. sisters B. brothers C. children D. uncles

Little Mike’s grandma died weeks ago. He missed her very much. One afternoon Mike went to the city park where his grandma used to go. There he saw an old lady. She looked very kind. She was sitting there, watching pigeons(鸽子).Little Mike went up and sat next to her. He took out his food and drinks and gave some to her. She smiled at him. Her smile was so sweet that Mike wanted to see it again. She seemed to understand him, so once again she smiled. Mike was very glad.

They sat there all the afternoon, eating and talking. As it grew dark, Mike got up to leave. Before he left, he hugged the old lady and she gave her sweetest smile.

When Mike got home, his mother was surprised by the look of joy on his face. “I met a granny in the park. Her smile was like the kind of smile I had seen on grandma’s face.”

The old lady also returned to her home happily. She told her son that she had food and drinks with a little boy. “He was as lovely as Brittany.” She said. Her son was surprised, because he had never seen her so happy since Brittany, her grandson, died weeks ago.

( )66. Little Mike went to the park and ________.

A. played with pigeons B. fed pigeons

C. met an old lady D. saw a friend of his grandma’s

( )67.The old lady’s smile showed that _______.

A. he had hoped to meet the boy B. she wanted to get some drinks

C. she missed her grandson D. she liked the little boy

( )68.Mike felt very glad because_______.

A. he gave the granny food and drinks B. the old lady was as kind as his grandma

C. he had seen his grandma D. she liked the little boy

( )69.Mike and the old lady________.

A. were good to each other B. knew each other well

C. often met in the park D. did nothing that afternoon

( )70.What can we learn from the story?

A. When one feels unhappy, he must go to a park

B. Old people are always kind and happy

C. Children and old people should get on well with each other

D. When people are kind to each other, they will feel happy

Bob Harris was a weatherman at a small television station. He worked for twenty years and during those twenty years, he felt that his life was boring. Every day, he studied the weather and tried to predict(预报)the next day’s weather. Then, he stood in front of the camera and read his report. Some days it was cloudy, some days it was sunny; sometimes rainy, while sometimes snowy. The weather changed each day, but Bob still felt that his job was always the same. His boss often told him to be happier and smile more in front of the camera, but Bob rarely smiled. He thought that most people did not watch his weather report and his job did not matter much to anyone. One day, he arrived at work and began to study the weather as usual. He noticed that something was different that day.

Everything he studied told him that there was going to be a very big storm very soon, though he was not completely sure. Suddenly, Bob felt excited. He ran to his boss’s office and asked to do a special weather report. The boss agreed and Bob gave a special report that afternoon, warning people of the coming storm. Because of this report, many people were safe during the storm.

Bob realized(意识到) that his job was actually very important.

( )71.Why did Bob feel that his life was boring?

A. Because the weather changed each day.

B. Because he did not want to work for a small television station.

C. Because he did not like to stand in front of the camera.

D. Because he felt that his job was always the same.

( )72.Why did Bob rarely smile when he was in front of the camera?

A. Because he thought that his job did not matter much to anyone.

B. Because he only worked for a small televison station.

C. Because he did not like his boss.

D. Because the weather report was boring.

( )73.Why did Bob ask to do a special weather report?

A. Because he felt excited.

B. Because he wanted to warn people of the coming storm.

C. Because he realized that his job was actually very important.

D. Because he wanted to smile in front of the camera.

( )74.Why did Bob feel excited?

A. Because he wanted to do a special weather report.

B. Because he wanted to ask his boss for more money.

C. Because he knew there was going to be a big storm soon.

D. Because he was going to stand in front of the camera.

( )75.How did Bob realize that his job was actually very important?

A. People were safe from the storm because of his weather report.

B. He got better pay after he did the weather report.

C. People liked him very much.

D. He did a special report every day.

第二部分 非选择题(55分)

五、词性变换(15’)

1.He is ________(humor),he always tells us funny jokes.

2.What fun it is _______(learn)foreign language.

3.Did you enjoy__________(you)at the party yesterday?

4.We have a ________(month)test on each subject.

5.When we arrived at the park, we could not wait _______(take)many photos of the park.

6. _______(sad), many wild animals lost their lives because of people.

7.Many polar bears die because of _______(lose) their living areas.

8.You had better ________(not shout)at the children. Be patient.

9.When Xi Wang was born, she _______(weigh)just 100 grams.

10.The radio says it will be much _______(snow)tomorrow.

11.Look! There are many________(fisherman) fishing in the river.

12.Tomorrow will be a hot day with temperatures in the _____________(thirty).

13.It’s______(correct)if you drop litter(废品)in nature nerves.

14.We_______(sleep)at 10.p.m last night.

15.A lot of ___________(tour) go to Zhalong to watch the birds every day.

六、任务型阅读 (10’)

It is very important to have good friends. A life without a friend is a life without a sun.

Having good friends can help us in lots of different ways. People with a lot of friends usually feel happier than people with no friends. Everything we do will be more fun if we have friends with us to share our happiness and worries. 1)When friends are in trouble, we should help them _____ ______laughing at them. When we are feeling sad or worried, our friends will also give us advice and help us get out of difficulties.

2)We should not only have good friends but also be good friends. We need our friends as much as they need us. We should be willing to help friends when they need help.

1.回答下列问题

What will friends do when we have difficulties?

2.在1)句的空白处填入适当的词使句意完整、上下文通顺:________ ________

3.将2)句译成汉语:_____________________________________________________________

4.找出文中与下列句子意思相近的句子:

If friends need our help, we should be glad to help them.

5.找出文中最能表达该短文主题的句子:__________________________________________

七、首字母填空(10’)

One spring day in 1950 in New Mexico, the United States, someone saw s 1 coming from a forest and called the fire station at once. The firemen saw a big fire on the ground between the trees, which was spreading(扩散)quickly because of a s 2 wind. Many people t 3 to fight the fire, but as soon as one area was under control, the fire spread to another area. S 4 , a firemen saw a baby bear close to the fire. It was t 5 in the bushes. The