初二物理 光的反射 练习题精选含答案

第一篇：初二物理 光的反射 练习题精选含答案

初二物理 光的反射 练习题含答案

一、填空题（每空1分，共23分）

1.光的直线传播是有条件的，它的条件是，光只有在___________才能沿直线传播。光在不同的物质中的传播速度不相同，只有在__________速度才最大，其大小为__________千米/秒。2.光是直线传播的。___ _______成像证明了光的直线传播特性，小孔所成的 像是_______ _______像，因此它可以用光屏接收到，接收到的像一 定是______的。

3.当光从一种物质向另一种不同的物质传播时，当到达两种传播物质的分界面时，会返回到原来传播的物质中，这种现象叫做光的________，在这种现象中光所遵循规律是___________定律。4.如图5—1所示，为一束反射光线，反射线OA与平面镜之间的夹角为30°角，如果使反射线继续向平面镜方向靠拢时，必须使入射线____________法线。

5.由于光的直线传播，当太阳、月亮和地球三者在同一条直线上时，月亮恰好 位于太阳和地球的连线上，在地球上就可以看到_________，这时地球上的部分 地区则位于月亮的___________。

6.镜面反射和漫反射的不同，是由于反射面的结构所造成的。当反射面极为光滑时，将发生________反射，当反射面粗糙不平时，则会发生_________反射。

7.一束光线照在水平放置的平面镜上，光线向下与水平方向成30°角，在入射线不变时，转动镜面使反射光线竖直向上，入射线与镜面间成______角。

8.如果有人以1米/秒的速度远离直立的平面镜时，像向________方向移动，相对于镜面的移动速度是________米/秒，人与像的相对速度是_________米/秒。

9.太阳能的利用，目前已经很普遍了，它所常用的光学元件是_______镜，这种镜能集中日光能的原因是它能使光________，它把光能转化为_______能。

10.汽车的驾驶室的外面都装有观察镜，这种镜是______镜，这样做可以______，该镜中所成的像是______________。

二、选择题（把正确答案的序号填在题后的括号内）（25分）1.在光的传播过程中，正确说法是: ［ ］ A.光在一种均匀物质中传播时，一定能直线传播

B.光只有在真空中传播时，速度才会最大，它是物体运动速度的最大值 C.光是由无数条光在传播时的细线组成的

D.光从一种均匀物质进入另一种均匀物质时，也可以直线传播，只是传播的速度发生了改变 2.镜面反射和漫反射是日常所常见两种反射，在这两种反射中的共同点在于［ ］ A.都可以把入射的平行光反射成平行光

B.都可以使反射光在人的视觉里得到感觉，且感觉到强度相同 C.两种反射都是由于光传播到两种物质的分界面上产生的

3.一束入射光线沿与镜面成30°角的方向射到平面镜上，如果使光的传播方向不发生改变，应该采用的方法是 ［ ］

A.使光线向镜面偏转30°角 B.使光线向镜面偏转60°角 C.使镜面向与光线夹角较小的方向偏转30°角 D.使镜面向与光线夹角较大的方向偏转120°角

4.人站在平面镜前，能看到镜内他的全身像和周围的景物的像，当人后退时［ ］ A.他在平面镜中观察的视野变小，他的像也变小

B.他在平面镜中看到景物范围，视野范围变大，他的像也变大 C.他在平面镜中的视野变大，像的大小保持不变

D.他在平面镜中的视野变小，观察到的景物减少，他在镜中所成的像保持不变 5.当平行光射到反射镜上后，反射光线不能汇聚的镜是 ［ ］

A.平面镜 B.凸镜 C.凹镜 D.三个镜的反射光都是发散的

三、作图题（24分）

1.完成各图中光反射的光路图。

2.根据平面镜的成像规律画出图5—4中点S和箭头AB所成的像。

3.图5—5中的箱子是光进入箱中，然后又从箱中反射出来的光路图，按它们 的光的传播规律，把适当的光学器件填入箱内。

四、判断题（正确的打“√”，错的打“×”）（18分）1.光从一种物质进入另一种物质时，也可以直线传播。［ ］ 2.树在水中的倒立影，是由于水对光的反射而成的像。［ ］ 3.平面镜所成的像与镜的大小有关，镜大像也大。［ ］ 4.漫反射是由于光的杂乱射入造成的。［ ］

5.光的反射必须发生在两种物质的分界面处,只要有分界面存在，都会发生光的反射。6.平面镜和凹镜都能成实像。［ ］ 7.凸镜所成的像都是虚像。［ ］

8.凸镜和凹镜都能成像，所以它们都可以使光会聚。［ ］ 9.在任何的反射镜中，光路都是可逆的。［ ］

五、计算题（10分）

1.用激光反射器向月球发射激光信号，经过2.56秒在地面接收到返回的

激光信号，则这时月球与地球之间的距离是多少？

2.电线杆在阳光照射下的影长为7米，1根长1米的直立细杆的影长是1.2米，求电线杆的高是多少？

］ ［ 答 案

一、（每空1分，共23分）

1．同一种均匀物质中，真空中传播3x106；2.小孔，实，倒立；3.反射，光的反射； 4.远离；5.日食，影中；6.镜面，漫；7．60o8.远离镜面1米/秒，2米/秒； 9.凹镜，会聚，热；10.凸镜，扩大视野，正立缩小虚像。

二、（25分）1.ABD 2.C 3.CD 4.D 5.AB

三、（24分，每个图2分）1.图5—2

2.图5—3

3.图5—4

四、（18分）1.√2.√3.×4.×5.√6.×7.√8.×9.√

五、（每小题5分，共10分）

（公式对3分，结果对2分）

光的反射练习

【同步达纲练习】

一、选择题（每题5分，共45分）

1.关于光的反射定律，某同学的叙述如下，其中错误的是（）A.反射光线跟入射光线和法线在同一平面上 B.反射光线跟入射光线分居在法线的两侧 C.入射角等于反射角

D.入射角为θ，反射角也为θ 2.下列说法中正确的是（）

A.反射光线和入射光线不可能在同一直线上 B.发生漫反射时就不遵守反射定律了 C.发生反射时光路是可逆的

D.反射光的速度小于入射光的速度 3.下列说法中错误的是（）

A.在光的反射现象中，若入射光线靠近法线，反射光线也靠近法线 B.光线垂直镜面入射时，反射角是90°

C.通过平面镜，甲同学能看到乙同学，那么乙也能通过平面镜看到甲 D.镜面反射遵守反射定律，漫反射也遵守反射定律

4.若一束平行光垂直射到一平面镜上，这时反射光和入射光的夹角是（）A.0°

B.90°

C.45°

D.180°

5.若反射光线与入射光线的夹角是80°，则入射光线和镜面的夹角是（）A.40°

B.50°

C.80°

D.130°

6.入射光线与平面镜的夹角是55°，保持入射光线不动，绕入射点转动面镜，使入射角增大10°，则反射光线跟入射光线的夹角是（）

A.50°

B.70°

C.90°

D.130°

7.如左下图所示，入射光线与平面镜MN的夹角是30°，如果保持入射光线不动，使平面镜绕入射点逆时针转动10°，则反射光线跟入射光线的夹角（）

A.增大20°

B.增大10°

C.减小20°

D.减小10°

8.如中上图所示，两平面镜A和B相交成角a，若入射光线跟B镜面平行，经镜面反射后，射出的光线与A平行，则角a为（）

A.30°

B.60°

C.45°

D.90°

9.如右上图所示，两块平面镜相交成60°，一束光线AO射到平面镜M上，要使最后反射回去的光线与AO重合，但方向与AO相反，那么光线AO与平面镜M的夹角应是（）

A.15°

B.30°

C.45°

D.60°

二、作图题（每1题6分，第2题5分，共11分）

10.在下图中，根据题中给出的条件，画出入射光线、反射光线或平面镜的位置.11.太阳光线与水平面成30°角，若要用镜子将太阳光线反射到竖直的深井里，镜面应与水平成多大角度？请在下图中画出其光路图.三、境空题（每空5.5分，共44分）

12.入射光线垂直射到平面镜上时，反射角是 如果把镜面转动30°角，这时反射光线跟入射光线的夹角是.13.我国有一部古书《淮南万毕术》，书中记有这样一段文字：“取大镜高悬，置水盆于其下，则见四邻„„”这是利用 原理来观察周围景物，且类似于__________的装置.14.光的反射有 反射和 反射.两种反射都遵守 定律.【素质优化训练】

1.太阳光与水平地面成50°角入射，要使太阳光沿检查井照亮下水道，如下图所示，在井口处应怎样放置平面镜.2.太阳光与水平方向成60°角射向平面镜，若使反射光线沿水平方向射出，求平面镜与水平方向夹角

【生活实际运用】

1.铁板做成的公益广告牌上用油漆画上图案和文字.人们从广告牌前经过时却看不清上面的内容，只感到有刺眼的光照来，这是何故？

2.请你设计一种自行车“尾灯”，当光照射在它上面时，它能将光按原方向反射回去.这样使夜行的机动车辆能看清公路上的自行车.参考答案

【同步达纲练习】

一、1－5．C C B A B 6－9．C C B B

二、10,11

三、12．0° 60° 13．平面镜成像 潜望镜 14．镜面 漫 光的反射 【素质优化训练】

1．平面镜应与水平面成70°角放置．

2．平面镜的放法有两种：一种是镜面与水平方向成30°角，一种是与水平方向成60°角.【生活实际运用】

1．广告牌如果太光滑，太阳光照在它上面，就易产生镜面反射．当人逆着反射光看广告牌时，由于光照太强，分辨不出它上面的字迹，图案和底色．

2．自行车“尾灯”本身不发光，设计反射式尾灯是为了让车后的灯光照在它上面发生反射而被人观察到。将反射面设计成互成90°角度的组合面可以使先按原路反射回去．

第二篇：初二物理连通器练习题

1、下列容器中，不是连通器的是（）

A、U形管

B、茶壶

C、锅炉水位计 D、帕斯卡裂桶实验

2、关于连通器的理解正确的（）A、连通器中至少有两个开口 B、连通器中只有两个开口

C、在连通器中倒入液体后，各液面一定相平。D、底部互相连通的容器叫连通器

3、如图所示，A，B两容器内盛着水，水面等高，两容器间用一斜管相通，K是开关，当K打开后，则（）

A、水将由A流向B B、水将由B流向A C、水不流动 D、无法确定

7、下列关于茶壶嘴的设计说法中，正确的是：（）A、壶嘴远高于壶口

B、壶嘴远低于壶口

C、壶嘴做得与壶口一样高

D、以上设计都可以

DACC

1、连通器在日常生活、生产中有着广泛的应用。图中所示的事例中利用连通器原理的是（）

A．只有（1）（2）

B．只有（3）（4）

C．只有（1）（3）（4）

D．（1）（2）（3（4）

2、在连通器的两端分别装有盐水和清水，液面相平，如图所示，如果将阀门打开，则（）A.盐水向右流动

B.清水向左流动

C.均不流动

D.无法判断

3、下列物体不属于连通器的是

（）

A.水壶

B.涵洞

C.喷雾器

D.船闸

4、学校改建操场时，工人师傅用一灌水的透明长塑料管检查操场是否水平。当管中的水静止时，管两端的水面一定____________，当塑料管的一端提高10cm，最终管两端水面的高度差为____________。

1．连通器是上端_________，下部_________的容器．往连通器中注入液体，当液体不流动时，各容器中的液面将会保持 ．

2．茶壶和锅炉水位计都是_________．船闸是利用_________的道理来工作的．

3．如图所示的敞口容器中加水，则水能达到的最高位置是（）．

A．容器A的顶端 B．容器B的顶端 C．容器C的顶端D．条件不足，无法确定

4．如图所示，A，B两容器内盛着水，水面等高，两容器间用一斜管相通，K是开关，当K打开后，则（）

A．水将由A流向B B．水将由B流向A

C．水不流动 D．无法确定

5．图中正确的是（）．

６．如图所示，求：

（1）箱顶的A点所受水的压强；

（2）若箱盖面积为15平方厘米，求水对箱盖的压力．

７．有一连通器，左右管口口径相同，先往连通器里倒入一些水，然后在右管中倒入一些油，此时测得如图所示的基线以上的水柱高度为8厘米，油柱高度为10厘米，问这种油的密度是多少？

答案：

1． 开口，连通，水平 2．连通器，连通器 ３．B ４．C ５．B

６．（1）980帕；（2）l.47牛

7．

第三篇：初二物理速度练习题

速度练习题

一、选择题

1.下列说法正确的是 [

]

A.变速直线运动的速度是变化的B.平均速度即为速度的平均值

C.瞬时速度是物体在某一时刻或在某一位置时的速度

D.瞬时速度可看作时间趋于无穷小时的平均速度

2.关于匀速直线运动，下列说法中正确的是 [

]

A.瞬时速度不变的运动，一定是匀速直线运动

B.速率不变的运动，一定是匀速直线运动

C.相同时间内平均速度相同的运动，一定是匀速直线运动

D.瞬时速度的方向始终不变的运动，一定是匀速直线运动

3.子弹以900m/s的速度从枪筒射出，汽车在北京长安街上行驶，时快时慢，20min行驶了 18km，汽车行驶的速度是54km/h，则 [

]

A.900m/s是平均速度

B.900m/s是瞬时速度

C.54km/h是平均速度

D.54km/h是瞬时速度

4.物体通过两个连续相等位移的平均速度分别为v1=10m/s，v2=15m/s，则物体在整个运动过程中的平均速度是 [

]

A.12.5m/s

B.12m/s

C.12.75m/s

D.11.75m/s

5.作变速直线运动的物体，若前一半时间的平均速度为4m/s，后一半时间的平均速度是8m/s，则全程的平均速度是 [

]

A.7m/s

B.5m/s

C.6m/s

D.5.5m/s

6.质点作单方向的匀变速直线运动时，下列论述中正确的是 [

]

A.相等的时间内位移相等

B.相等的时间内位移的变化相等

C.相等的时间内速度的变化相等

D.瞬时速度的大小改变，但方向不变

7.下列作直线运动的速度-时间图象（图1）中，表示质点作匀变速直线运动的是 [

]

8.一学生在百米赛跑中，测得他在 50m处的瞬时速度为 6m/s，16s末到达终点的瞬时速度为7.5m/s，则它在全程内的平均速度是： [

]

A.6m/s

B.6.25m/s

C.6.75m/s

D.7.0m/s

二、填空题

9.一辆汽车在一条直线上行驶，第1s内通过5m，第2s内通过20m，第3s内通过20m，第4s内通过 5m.则此汽车在最初 2s内的平均速度是______m/s，中间 2s内的平均速度是______m/s，全部时间内的平均速度是______m/s.10.匀速直线运动的s-t图象中的______可表示质点运动的快慢，______越大，质点运动的速度也越大.11.如图2（a）中的图象A表示质点作______运动，图象B表示质点作______，图象C表示质点______；在图（b）中的图象A表示质点作_______，图象 B表示质点作_______，图象C表示质点作_______.三、计算题

12.某运动员在百米跑道上以8m/s的速度跑了80m，然后又以2m/s的速度走了20m，这个运动员通过这段路的平均速度是多少？

13.图3是甲、乙两物体的位移和速度图象.试根据图象说明从A→B→C→D的各段时间内，甲物体在5s内的位移是多少？你能求出乙物体在5s内的位移吗？

速度练习题答案

一、选择题

1.ACD 2.A 3.BC 4.B 5.C 6.CD 7.BC 8.B

二、填空题

9.12.5，20，12.5 10.斜率，斜率

11.匀速直线，方向相反匀速直线运动，处于静止状态，静止开始的匀加速直线运动，方向相同的匀减速直线运动，方向相同的匀速直线运动.三、计算题

12.5m/s 13.-2m，16m

第四篇：初二英语完形填空练习题(含答案)

1、Mark lived in a village far away.One day he became very ill and everyone thought he would 1____

soon.They sent for a doctor.Two days 2_____ the doctor came and looked over the sick man.3____ asked for a pen and some paper to write down the name of the medicine.But there was no pen 4______ paper in the village, because no one could write.The doctor

5_____ up a piece of burnt wood from the fire and wrote the name of the medicine on the 6______ of the house.“ Get this medicine for him.” he said, “and he will soon get 7_____.” Mark’s family and friends did not know

8_____ to do.They could not read the strange words.Then a young man

9_____ an idea.He took off the door of the house, put it on his carriage(马车)and drove to the nearest 10.He bought the medicine there, and Mark was soon well again.（）1.A.wake B.cry C.moved D.die（）2.A.late

B.later C.ago D.before（）3A.The sick man B.Mark C.The doctor D.The farmer（）4.A.and

B.or

C.then D.also（）5.A.picked B.held C.made D.looked（）6.A.wall

B.window C.ground D.door（）7.A.well

B.worse C.bad D.good（）8.A.when B.what C.where D.whick（）9A.thought B.hit

C.caught D.had（）!0.A.shop B.farm C.hospital D.village

2、Peter and Mike were in 1____ class．Peter was born in a 2_____ family．But Mike’s father was a businessman(商人)and got 3_____ money．When Peter got into trouble(困难)he always helped him．

Peter liked to have sports．He was good at 4_____ ．He ran 5____ than any others in their class It was Sunday．Mike and Peter went to a forest to have a picnic．Mike took a lot of food there．It was a 6___ ay．The birds were singing and there were all kinds of flowers．They ate and drank then went 7___ in the river．They had a good time．Suddenly they heard a great noise．They found it was a tiger behind a big tree．They were both very 8______ ．Peter put on his shoes quickly and was going to run away．Mike stopped him and said：”It’s no use for us．The tiger runs 9____ faster than us．Let’s find a way．”“It doesn’t matter．”said Peter．”I’m 1 0___ I'll run faster than you．”

1．A．same

B．different

C．difference

D．the same 2．A．rich

B．happy

C．poor

D．bad 3．A．many

B．lot

C．any

D．much 4．A．ran

B．running

C．run

D．runs 5．A．fast

B．faster

C．fastest

D．best 6．A．sun

B．rain

C．rained

D．sunny 7．A．fish

B．to fishing

C．fishing

D．fished 8．A．happy

B．afraid

C．sad

D．exciting 9．A．more

B．much

C．many

D．1ittle 10．A．afraid

B．worried

C．sure

D．glad

3、根据短文内容在A、B、C、D四个选项中选出可以填入空白处的最佳答案（10分）

We were going to play a team from a country school.They didn’t come 1 the match nearly began.They looked 2 than we thought.The wore dirty T-shirts and blue jeans and looked like farm boys.We thought they 3 saw a basketball before.We felt that we didn’t 4 any practice to play with such a team.It was very late so they couldn’t have any time to practice.The match began ,one of our boys 5 the ball and he tried to give it to another one.But from out of nowhere a boy in a T-shirt 6 the ball and he quickly and beautifully got the ball into our basket and had two points.They 7 us.They had another two points in a minute.Soon it was all over.The country team 8 the match.Of course we knew that there was still another team 9 than any good team.But the important lesson we learn this time was : One can’t tell a man or a team by the 10.（）

1、A.when

B.so

C.until

D.at（）

2、A.stronger

B.younger

C.worse

D.better（）

3、A.never

B.often

C.sometimes

D.always（）

4、A.have

B.make

C.use

D.need（）

5、A.got

B.played

C.took

D.carried（）

6、A.caught

B.changed

C.held

D.stopped（）

7、A.surprised

B.frightened

C.admired

D.smiled（）

8、A.lost

B.won

C.got

D.had（）

9、A.worse

B.less

C.better.D more（）

10、A.T-shirt

B.appearance

C.name

D.points

4、初二完形填空练习题

Mary has some friends.1 Betty, Peter, Alice 2 Mike.Mary is the oldest 3.Betty is thirteen years 4.She is younger than Mary and older than Peter.Alice is nice and Mike is seven.Betty and Peter are 5 runners.But Peter runs faster.Mary and Betty like to 6.Mary plays better than Betty.Alice sings 7 of them.Mary and Betty study in a middle school.Alice and Mike study in a primary school.They 8 work hard at school.But Betty works 9.Her handwriting is good, 10.1.A.They are B.It isC.There are D.We are 2.A.but B.orC.them D.and 3.A.in the five B.of fiveC.of the five D.for the five 4.A.older B.oldC.oldest D.very old 5.A.best B.betterC.well D.good 6.A.play basketball B.play a basketball C.play the basketball D.play basketballs 7.A.good B.betterC.best D.well 8.A.six B.allC.four D.both 9.A.hard B.harderC.very hard D.hardest 10.A.too B.twoC.at D.also

5、Perhaps you have heard _1 __about the Internet, but what is it?

The Internet is many different networks around the world.A network is a group of computers put together.These networks joined together are called the Internet._2 that doesn't sound interesting.But _3 we've joined the Internet, there are 4 things we can do.We can have a lot of 5 on the World Web.(www.xiexiebang.coming smaller and smaller.People can now work at home with a computer in front, getting and sending the information they need.They can buy or sell whatever they want by the Internet.But do you know 98% of the information is 10 English? So what will English be like tomorrow? 1.A.a lot of

B.a lot

C.a few

D.a little of 2.A.May

B.But

C.And

D.Maybe 3.A.where

B.when

C.however

D.although 4.A.lots of

B.a lot

C.much

D.few 5.A.interesting B.friends C.interest

D.funny 6.A.find

B.look for

C.find out D.look after 7.A.with

B.for

C.on

D.about 8.A.with

B.by

C.on

D.for 9.A.call

B.called

C.calls

D.calling 10.A.on

B.with

C.in

D.for

6、Life in the year 3044 is very different 46 life in the 21st century.We still do many of the things you did, but we do them 47.For example, we now have e-friends to help us and keep us company.An e-friend is a machine that looks just 48 a human being.It can walk and talk and can do almost 49

we human beings do.My e-friend is a lot like me and we have

fun together.She helps me 51 my homework and we often go swimming.She is programmed to take care of me if anything 52 , so I always feel safe when we are together.She can also send me messages, just like old-fashioned e-mail, and I can download information from her memory.It’s great 53 an e-friend – I am never lonely and I always have someone to talk 54.I would like to tell you more about life in the year 3044, but I have to send my e-friend to clean up my room.Maybe 55 I will be able to travel back in time and visit you.46.A.of

B.from

C.in

D.with

47.A.different

B.difference

C.differently

D.differences 48.A.like

B.for

C.at

D.up

49.A.something

B.anything

C.nothing

D.everything 50.A.many

B.a number of

C.a lot of

D.the number of 51.A.with

B.at

C.on

D.doing

52.A.will happen

B.happens

C.happened

D.is going to happen 53.A.have

B.having

C.to have

D.has 54.A.to

B.about

C.with

D.Both A and C

55.A.one day

B.in one day

C.after one day

D.with one day

7、A generous gap(代沟)has become a serious problem.I read a 1 about it in the newspaper.Some children have killed themselves after 2 with parents.I think this is because they don’t often have a talk with each other.Parents now 3 more time in the office, 4

they don’t have much time to stay with their children.As times passes, they both feel that they don’t have the __5 topic(题目)to talk about.I want to tell parents to be more with your 6 , get to know them and 7 them.And for children, show your 8 to your parents.They are the people who love you.So 9 them your thoughts.In this way, you 10 have a better understanding of each other.（）1.A.message

B.call

C.report

D.letter（）2.A.talk

B.argue

C.fight

D.play（）3.A.spend

B.stay

C.work

D.have（）4.A.because

B.if

C.but

D.so（）5.A.interesting

B.same

C.true

D.good（）6.A.business

B.children

C.work

D.office（）7.A.get on well with B.look after

C.understand

D.love（）8.A.interest

B.secret

C.trouble

D.feelings（）9.A.tell

B.ask

C.answer

D.say（）10.A.can

B.should

C.must

D.would

8、Grandma Li lived alone in an old building.She was old and didn’t like noise at all.The young man and woman 46 always made much noise every night, so she couldn’t 47.When the young man and woman moved out of the building, Grandma Li was very 48.Another young man moved in and Grandma Li thought, “Well, he 49.”

But at three o’clock the next morning, when Grandma Li 50 , some noise 51.She 52 carefully.It was a dog.She thought, “There wasn’t any dog here before.It 53 be the young man’s.” She 54 him and telephoned the young man at once.Before the young man could say something, she stopped the call.Nothing more happened 55 four o’clock.Then Grandma Li’s telephone rang.When she answered the phone, she heard, “I’m the man upstairs.I’m sorry to trouble you, but I want to tell you I don’t have a dog at all!” 46.A.upstairs

B.up

C.above

D.higher 47.A.get to sleep

B.sleeps

C.slept

D.falls asleep 48.A.sad

B.pleased

C.surprised

D.worried 49.A.looked quiet

B.looks quiet

C.looked quite

D.looks quite 50.A.was sleeping

B.was falling asleep

C.slept

D.was getting to sleep 51.A.woke her up

B.waked she up

C.woke up her

D.waked up she 52.A.heard

B.listened

C.was hearing

D.listened to 53.A.can

B.may

C.must

D.could 54.A.angry with

B.angrier with

C.is angry with

D.was angry with 55.A.when

B.after

C.at

D.until

9、The difference between life in one country and in

is quite often

the difference between city life and village life in

country.In an

English

everybody

everybody else;they know what time you get up, what time you go to bed and what you usually have

dinner.If you want any help, you will always

it and be glad to help

in return.In a large

city

London, there are many things to see and many places to go to.people often do not know each other.It

happens that you have

seen your next-door neighbor, don’t know his name or

about him.People living in London are often very , particularly.This is because the people who they are with all day are scattered over large areas in the evenings and weekends.you walk

the street in London on a Sunday, it is almost like an empty town.One is

for old people who do not live with their

and have no work to go to during the day.1.A.other

B.others

C.the other

D.another

2.A.not so big as

B.so big as

C.isn’t so big as

D.as big as

3.A.same

B.the same

C.different

D.different

4.A.village

B.town

C.city

D.country

5.A.needs

B.knows

C.helps

D calls

6.A.at

B.for

C.in

D.with

7.A.get

B.take

C.bring

D.pay

8.A.any other

B.any

C.anyone else

D.any people

9.A.like

B.as

C.of

D.in

10.A.So

B.Then

C.Though

D.But

11.A.good

B.well

C.better

D.best

12.A.sometimes

B.some times

C.some time

D.sometime

13.A.ever

B.had

C.never

D.been

14.A.something

B.nothing

C.everything

D.anything

15.A.lonely

B.happy

C.angry

D.tired

16.A.before work B.at work

C.after work

D.by work

17.A.If

B.After

C.Before

D.Because

18.A.in

B.through

C.to

D.across

19.A.lucky

B.happy

C.surprised

D.sorry

20.A.daughters

B.sons

C.children

D.people

10、Have you ever asked yourself why children go to school? You may 1 they go to learn languages, P.E., history, science and all other 2.But why do they learn these things? We send our children to school to prepare them for the time 3 they will grow up and will begin to work for 4.Nearly everything they study at school has some practical use in their life.But is that the 5 reason why they go to school? There is more in education than just 6 facts.We go to school above all to learn how to learn, so that then we have left school we can 7 to learn.A man who really knows how to learn will always be successful, because whenever he has to do something new which he has never had to do 8 he will rapidly teach himself how to do it 9 the best way.The uneducated person, on the other hand, is 10 unable to do something new, or does it badly.The purpose of school, therefore, is not to teach languages, math, geography, etc, but to teach pupils the way to learn.()1.A.speak

B.tell

C.say

D.talk()2.A.matters

B.subjects

C.math

D.physics()3.A.while

B.when

C.which

D.where()4.A.oneself

B.they

C.them

D.themselves()5.A.only

B.nearly

C.lone

D.alone()6.A.study

B.studied

C.learning

D.learn()7.A.make

B.keep

C.keep on

D.go on()8.A.later

B.ago

C.then

D./()9.A.from

B.in

C.with

D.on()10.A.either

B.neither

C.other

D.nor

11．完型填空

Someone says, “Time is money”, but I think time is 1 important than money.Why? Because when money is spent, we can get it back.However, when time is 2 , it’ll never 3.That is 4 we must not waste time.It goes without saying that the 5 is usually limited.Ever a second is very important.We should make full use of our time to 6 useful.But it is a pity that there are a lot of people who do not know the importance of the time.They spent their limited time smoking, drinking and 7.They do not know that wasting time means wasting part of their own 8.In a word, we should save time.We shouldn’t 9 today’s work for tomorrow.Remember we have no time to 10.()1.A.much

B.less

C.mush less D.even more()2.A.cost

B.bought

C.gone

D.finished()3.A.return

B.carry

C.take

D.bring()4.A.what

B.that

C.because

D.why()5.A.money

B.time

C.day

D.food()6.A.nothing B.something C.anything D.everything()7.A.reading B.writing

C.playing

D.working()8.A.time

B.food

C.money

D.life()9.A.stop

B.leave

C.let

D.give()10.A.lose

B.save

C.spend

D.take

1.答案：1 DBCBADABDC

2DCDBBDCBBC

3、CCADA AABCB

4、A D C B D A C B D A

5、答案 1.B 2.D 3.B 4.A 5.C 6.A 7.D 8.B 9.D 10.C

6、答案 II.46-50 BCADC

51-55 ABCDA

7、答案 四．完型填空答案：CBADB BADAD

8、答案 VI.46-50 AABBA 51-55 ABCDD

9、答案 四.DABAB, BACAD, BACDA, CABDC

10、答案 五.1-5 CBBDA

6-10 CDDBA 11、1-5

DCADB 6-10

BCDBA

第五篇：初二物理练习题声现象

初二物理练习题声现象

地理练习题

一、选择题(133分)

1.关于声音的产生的说法中正确的是()

A.只有声带不停地振动才能发声

B.只要人耳听不到，即使物体在振动也不会发声

C.一切正在发声的物体都在振动

D.以上说法都不对

2.我国正在进行登月计划的研究，按照计划，我国将在2007年将嫦娥一号送上月球，宇航员登上月球后，若有一块陨石落在他附近，则下列判断正确的是()

A.宇航员能够听到陨石撞击月球的声音

B.陨石撞击月球时不会使月球的地面产生振动 C.宇航员虽然不能听到陨石撞击月球的声音，但他可以感受到这个声音的存在

D.陨石撞击月球的声音可以在月球的表面向四周传播

3.潜水员在不浮出水面的情况下依然可以听到岸上的谈话声，以下分析不正确的是()

A.空气可以传播声音 B.岸上的人的声带在振动

C.水可以传播声音 D.潜水员的声带在振动

4.为了保护学习的环境，减少噪声污染，下列措施不可行的是()

A.不要在教学区域内大声喧哗

B.在校园内及其附近栽花种草

C.将教室的所有门窗全部封死

D.教学楼的内外墙面尽量做得粗糙些