1 2 3 4 5 6 7 8 9 10 11 12 13 14 B C B B B A D B C A A B C C 查看更多

 

题目列表(包括答案和解析)

完形填空 (共20小题;每小题1分,满分20分)
请认真阅读下面短文,从短文后各题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。
Certainly dustmen prefer to be known as "Reuse Collection and Disposal Officers". You may think that this is rather    36 , and it is better to call a spade a spade. But dustmen can be as    37  as people of any other occupation, though we must     38   that their job is not a    39    one in the world. We often take dustmen for granted. Perhaps because they usually come very early in the morning, before most people are     40   .We are likely to forget their     41   .Our dustbins are    42   regularly, but we    43    stop to think about the men who do this. However, it is one of the most important jobs in the world, and when there are no dustmen to    44   the rubbish, the general    45   soon becomes aware that something is wrong. Recently, the dustmen of England went on strike for higher wages.
During the first few days it was regarded as a    46  .But when the first two weeks had passed, and the dustbins were overflowing in nearly every backyard in the country, the joke did not seem so    47   any more.    48   the strike continued, people could not    49   the hills of rubbish around their dustbins, and they looked for other places in which to    50  it. Even Leicester Square, in the heart of West End of London, was    51   high with plastic bags full of smelly rubbish. This was a(n)    52   attraction that the people of London were not at all     53   to see. Even when the strike was over, it took several weeks for the country to get cleaned up completely. Perhaps now the English people appreciate the work of    54  dustmen rather more    55   and won't take them for granted any more.
【小题1】
A.cleverB.sillyC.interestingD.reasonable
【小题2】
A.sensitiveB.carelessC.hopefulD.shy
【小题3】
A.realizeB.believeC.knowD.admit
【小题4】
A.necessaryB.difficultC.romanticD.heavy
【小题5】
A.awayB.upC.downD.in
【小题6】.
A.existenceB.presenceC.absenceD.performance
【小题7】
A.cleanedB.filledC.emptiedD.burned
【小题8】
A.generallyB.frequentlyC.sometimesD.seldom
【小题9】
A.take awayB.take offC.take upD.take on
【小题10】
A.societyB.citizenC.publicD.community
【小题11】
A.trickB.jokeC.troubleD.show
【小题12】
A.pleasingB.excitedC.stupidD.funny
【小题13】
A.WhenB.WhileC.AsD.Because
【小题14】
A.bearB.containC.manageD.control
【小题15】
A.keep offB.give upC.take care ofD.get rid of
【小题16】
A.crowdedB.piledC.fixedD.put
【小题17】
A.businessB.industrialC.touristD.agricultural
【小题18】.
A.disappointedB.seriousC.nervousD.happy
【小题19】
A.itsB.herC.hisD.their
【小题20】
A.highlyB.eagerlyC.lowlyD.entirely

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小刚同学在研究“冰的熔化规律”时,得到的实验数据如表所示.
时间/min 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
温度/℃ -5 -4 -3 -2 -1 0 0 0 0 0 0 1 3 5 7
(1)从表中数据可以看出:冰熔化过程的起始时间是从第
5min
5min

(2)根据表中数据可以判断:冰属于
晶体
晶体
 (填“晶体”或“非晶体”)
(3)小亮同学把盛有冰块的大试管插入烧杯里的碎冰块中,如图所示.用酒精灯对烧杯底部慢慢加热,当烧杯中的冰块有大半熔化时,试管中的冰
C
C

A.熔化一部分     B.全部熔化   C.一点也不熔化    D.无法判断.

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i河南省开封市尉氏博文学校

八年级第一次月考试题

物   理

1.男同学说话声音“低沉”,是指男同学声音的________ 低,这是因为男同学说话时,声带振动较________的缘故。

2.音乐会上人们听到优美的小提琴声是由琴弦的________产生的,并通过________这种介质传到人耳的。

3.在音乐大厅里,乐团正演奏着雄壮的交响乐,各种乐器的形状虽然不同,但它们发声都是由于________产生的;各种不同乐器发出声音的________、________不同,但它们演奏乐曲的音调相同。

4.夏秋时节来到太阳岛上,耳边会传来悦耳的鸟叫和蛙鸣,青蛙“呱呱”的叫声是由于它的鸣囊在________,我们根据________能分辨出鸟叫和蛙鸣。

5.在狭窄的空间燃放鞭炮比在野外燃放鞭炮时的响度明显大,这是因为在狭小空间声波经过多次________造成的。

6.噪声是当代社会的四大公害之一,它是由发声体的________产生的。有资料显示,噪声每经过一条100m宽的林带可降低20dB~25dB,从减弱噪声的途径看,这是在________中降低噪声的。

7.如下图所示,是声音输入到示波器上时显示振幅与时间关系的波形。其中,声音音调相同的是________图和________图,响度相同的是________图和________图。

                 A                         B                               C                                 D

8.小明同学自己制作了一个哨子,在筷子上缠一些棉花,制成一个活塞,用水蘸湿棉花后插入两端开口的塑料管,吹管的上端,可以发出悦耳的哨音,此哨间是由于管内空气柱________产生的。上下拉动活塞,可以改变声音的。(选填“单调”、“响度”或“音色”)

9.钓鱼时不能大声喧哗,因为鱼听到人声就会吓走,这说明(      )

A.只有空气能传播声音

B.空气和水都能传播声音

C.声音在水中的速度比在空气中的速度小

D.声音从空气传入水中,音调发生了变化

10.声音从水中传入空气中,它的速度将(      )

A.变大   B. 变小   C. 不变  D. 不能确定

11.控制噪声是城市环保工作主要的项目之一,下列措施不能减弱噪声的是(      )

A.市区内禁止机动车鸣笛          B.减少二氧化碳气体的排放

C.在汽车的排气管上装消声器         D.在城市街道两旁和空地多种草,多植树

12.下列说法正确的是(      )

A.声音是由振动而发生,发声的物体不一定振动

B.声音在空气中的传播速度小于在铁轨中的传播速度

C.声音在真空中也能传播     D.声音在液体中不能传播

13.几名同学在室外聊天,室内同学听声音可以分辨出每句话是谁说的,这主要是因为各人发声的(      )

A.音调不同   B.音色不同    C.频率不同    D.响度不同

14.一场大雪过后,人们会感到外万籁俱静,究其原因,你认为正确的是(      )

A.可能是大雪后,行驶的车辆较少,噪声减小

B.可能是大雪后,大地银装素裹,噪声被反射

C.可能是大雪蓬松且多孔,对噪声有吸收作用

D.可能是大雪后气温较低,噪声传播速度较慢

物质        

空气

       氧气        

铝        

铁        

物质的密度

kg/m3

1.29

1.43

2700

7900

11300

声音传播的

速度m/s

330

316

5100

5000

300

15.下表列出了相同条件下不同物质的密度及声音在其中传播的速度。

根据上表提供的信息,可以得出的结论是(      )

A.声音传播的速度随着物质密度的增大而增大

B.声音传播的速度随着物质密度的增大而减小

C.声音在金属中传播的速度大于它在气体中传播的速度

D.声音在金属中传播的速度随着金属密度的增大而增大

16.说女同学比男同学的声音尖,这是指                    (       )

A.响度     B.音调    C. 音色     D.音准

17.凭你的生活经验,说出下列环境中噪声最大的是(       )

A.图书阅览室    B.自由市场     

C.“英模报告”会场   D.校园的林阴路上

18.下列建筑不属于声音的利用的是                          (       )

A.北京天坛的回音壁                B.录音棚墙壁做成凸凹不平关        

C.北京天坛的三音石                   D.北京天坛的圜丘

19.科学家在对蝙蝠的研究中,曾经用黑布将蝙蝠的双眼蒙上,发现蝙蝠也可以很正常地飞行,没有受到一点影响,这是因为       (  )

A.蝙蝠在飞行时会发出次声波,根据回声定位原理来飞行

B.蝙蝠的眼睛会发出超声波,能穿透黑布,清楚地看到黑布外面的目标

C.蝙蝠在飞行时会发出超声波,根据回声定位原理来飞行

D.黑布太薄会透光,蝙蝠可以很清楚地看到黑布外面的目标

20.一般来说,大礼堂的四周墙壁做成凸凹不平的形状,这是为了(  )

A.减少声音的反射     B.增强声强的反射

C.增强声音的响度     D.只是为了装饰美观

21.下列不属于超声波应用的是                                                       (  )

A.利用声波清洗精密的机械

B.外科医生利用声波的振动除去人体内的结石

C.医生给病人做“B超”检查

D.医生用“叩诊”法给病人诊病

22.吹笛子时笛子发声主要是                                                            (  )

A.笛子本身(竹管)振动发声

B.笛子(竹管)中的空所术振动发声

C.演员的嘴唇振动发出的声音

D.以上说法都不正确

23.我们对远处的人大声喊话时,常用双手在嘴边围成喇叭状,这是为了(  )

A.增大喊话频率     B.增加传入对方耳朵的声音响度

C.改变讲话的音色   D.增大讲话人的肺活量

24.一列停靠在站台的甲列车发出一声长鸣,另一列飞驰而过的乙列车也发出一声长鸣。站在铁路旁边的人听到的两声长鸣,其音调相比(  )

A.甲列车的高   B.乙列车的高     C.相同    D.无法比较

25.下列关于声源的说法错误的是(  )

A.一切声源都在振动   B.声源的振动如果停止,它就停止了发声   

C.不发生振动的物体也可能发声    D.不发生振动的物体一定不是声源

26.人们常用推理的方法研究问题,如在“探究声音的传播”实验中,现有的抽气设备总是很难将玻璃罩内抽成真空状态,在这种情况下,你怎样通过实验现象推理得出“声音不能在真空中传播”这一结论?

7.图1-4是探究声现象时常用的装置。

1.图中所示的实验现象说明_______________。

2.乒乓球在实验中起什么作用?

3.加大力度敲音叉,根据发生的现象,你又得出什么结论?

28.小宇在阅读《科海奇闻》一书时,看到这样一条奇闻:20世纪60年代初,美国空军在俄克拉荷马上空做音速飞行实验,飞机每天在10000的高空飞行8次,半年以后,当地一个农场饲养的10000只鸡中,有6000只被飞机轰鸣声杀死,幸存的4000只鸡,有的羽毛全部掉光,有的干脆不下蛋了。

这则奇闻引起了小宇他们学习小组对噪声探究的好奇心。于是,小组内的各位同学又分头查阅了许多资料,得到了如下的一些信息。

29请你根据小宇他们提供的信息资料,回答他们提出的问题:

1.有些不法商贩,为了销售劣质产品,就在店铺内通过高音喇叭播放音乐,他们是想利用噪声能够损害__________,从而对产品产生错觉这一危害,来使顾客上当。

2.由上述信息资料,我们可以归纳出消音材料的两个作用是:__________和__________。

3.小宇要将家中隔音墙的材料由棉布换成瓷瓦,晓丽认为不妥。他们由此引出一个新的探究课题,请根据他俩提出的探究课题,写出简要的探究报告。

课题:棉布与瓷瓦哪种材料的隔音效果更好

实验器材和步骤:________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________        

4.为了减小噪声污染,我们在日常生活中应该这样做(请写出两条):

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The world always makes way for the dreamer.
When I was twelve years old, my father took me to see Zig Zigler. I remember sitting in that dark hall listening to Mr. Zigler  1  everyone’s spirits up to the ceiling, I  2  there feeling like I could do anything. When we got to the car, I turned to my father and said, “Dad, I want to          3   people feel like that.” My father asked me  4  I meant. “I want to be a motivational (激励人的)speaker just like Mr. Zigler,”  I replieD.A  5  was born.
Recently, I began seeking my dream of motivating others.  6  a four-year relationship with Fortune 100 Company  7  as a sales-trainer and ending as a regional sales manager, I left the company at the height of my  8 . Many people were  9  that I would leave after earning a six-figure income. And they asked  10  I would risk everything for a dream.
I made my  11  to start my own company and leave my secure(无忧虑的)position after
 12  a regional sales meeting. The vice-president of our company delivered a  13  that changed my life. He asked us, “If a god would offer you three wishes, what would they be?” After giving us a  14  to write down the three wishes, he then asked us, “Why do you need a  15 ?” I would never forget the power I felt at that moment. I realized that  16  I had accomplished in the past had prepared me for this moment. I was ready and didn’t need a god’s help to become a motivational speaker. A motivational speaker was  17 .
Having made that decision, I was immediately  18 . One week after I gave notice, my husband was laid off from his job, and now we had no  19 . But I held fast to my dream. The wonder really began to happen. In a short time my husband found a better joB.And I was able to book several   20  engagements with new customers. I discovered the incredible power of dreams.
1.A.rise                      B.blow                  C.put                      D.raise
2.A.left                       B.came                  C.arrived                 D.slipped
3.A.get                       B.hope                  C.make                   D.cheer
4.A.that                      B.what                  C.which                  D.if
5.A.dream                   B.idea                   C.girl                      D.speaker
6.A.After                    B.Before               C.Because                D.While
7.A.beginning             B.working             C.acting                  D.regarding
8.A.life                       B.love                   C.income                 D.career
9.A.disappointed          B.moved               C.surprised              D.delighted
10.A.when                  B.why                   C.if                         D.how
11.A.plan                    B.promise              C.decision               D.mind
12.A.attending             B.joining               C.entering               D.holding
13.A.newspaper           B.book                  C.report                  D.speech
14.A.day                     B.second               C.week                    D.moment
15.A.help                    B.job                    C.god                      D.company
16.A.everything           B.anything             C.nothing                D.something
17.A.alive                   B.dead                  C.missing                D.born
18.A.examined            B.searched             C.checked                D.tested
19.A.help                    B.harm                  C.income                 D.money
20.A.selling                B.speaking             C.writing                 D.listening

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The world always makes way for the dreamer.
When I was twelve years old, my father took me to see Zig Zigler. I remember sitting in that dark hall listening to Mr. Zigler  1  everyone’s spirits up to the ceiling, I  2  there feeling like I could do anything. When we got to the car, I turned to my father and said, “Dad, I want to          3   people feel like that.” My father asked me  4  I meant. “I want to be a motivational (激励人的)speaker just like Mr. Zigler,”  I replieD.A  5  was born.
Recently, I began seeking my dream of motivating others.  6  a four-year relationship with Fortune 100 Company  7  as a sales-trainer and ending as a regional sales manager, I left the company at the height of my  8 . Many people were  9  that I would leave after earning a six-figure income. And they asked  10  I would risk everything for a dream.
I made my  11  to start my own company and leave my secure(无忧虑的)position after
 12  a regional sales meeting. The vice-president of our company delivered a  13  that changed my life. He asked us, “If a god would offer you three wishes, what would they be?” After giving us a  14  to write down the three wishes, he then asked us, “Why do you need a  15 ?” I would never forget the power I felt at that moment. I realized that  16  I had accomplished in the past had prepared me for this moment. I was ready and didn’t need a god’s help to become a motivational speaker. A motivational speaker was  17 .
Having made that decision, I was immediately  18 . One week after I gave notice, my husband was laid off from his job, and now we had no  19 . But I held fast to my dream. The wonder really began to happen. In a short time my husband found a better joB.And I was able to book several   20  engagements with new customers. I discovered the incredible power of dreams.
1.A.rise                      B.blow                  C.put                      D.raise
2.A.left                       B.came                  C.arrived                 D.slipped
3.A.get                       B.hope                  C.make                   D.cheer
4.A.that                      B.what                  C.which                  D.if
5.A.dream                   B.idea                   C.girl                      D.speaker
6.A.After                    B.Before               C.Because                D.While
7.A.beginning             B.working             C.acting                  D.regarding
8.A.life                       B.love                   C.income                 D.career
9.A.disappointed          B.moved               C.surprised              D.delighted
10.A.when                  B.why                   C.if                         D.how
11.A.plan                    B.promise              C.decision               D.mind
12.A.attending             B.joining               C.entering               D.holding
13.A.newspaper           B.book                  C.report                  D.speech
14.A.day                     B.second               C.week                    D.moment
15.A.help                    B.job                    C.god                      D.company
16.A.everything           B.anything             C.nothing                D.something
17.A.alive                   B.dead                  C.missing                D.born
18.A.examined            B.searched             C.checked                D.tested
19.A.help                    B.harm                  C.income                 D.money
20.A.selling                B.speaking             C.writing                 D.listening

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