13.A 14.B 15.C 16·C 17·A 18·B 19.提示:灯.电流表和变阻器都串联.电压表接变阻器两端 20.略 查看更多

 

题目列表(包括答案和解析)

某物理小组的同学用如下图甲所示的装置来探究水的沸腾。从点燃酒精灯加热开始计时,当液体中有气泡上升时,每隔1min记录水的温度如下表所示:(7分)

时间/min

···

11

12

13

14

15

16

17

18

19

20

···

温度/℃

···

95

96

97

98

98

98

95

98

98

98

···

(1)在安装、调整实验器材时,科学合理的顺序是:先调整固定      的位置,(选填“A”或“B”).。

(2)某小组观察到沸腾前和沸腾时水中气泡上升过程中的两种情况,如下图乙中C、D所示,则图中     是水沸腾时的情况;

(3)从记录的数据看出,在某一次观察记录中明显错误的是第      min时的数据;

(4)从记录数据可得出的结论是:此时水的沸腾的温度为     ℃,水在沸腾过程中温度       。(选填“升高”、“不变”或“降低”);

(5)在图丙中以时间为横轴,以温度为纵轴,根据表中正确的数据作出水的沸腾图像;

(6)在这次实验中,发现从开始加热到沸腾这段时间过长。为了缩短实验的时间,可以采取的措施是                                                。 (写出一条即可)

 

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某物理小组的同学用如下图甲所示的装置来探究水的沸腾.从点燃酒精灯加热开始计时,当液体中有气泡上升时,每隔1min记录水的温度如下表所示:
时间/min 11 12 13 14 15 16 17 18 19 20
温度/℃ 95 96 97 98 98 98 95 98 98 98

(1)在安装、调整实验器材时,科学合理的顺序是:先调整固定
B
B
的位置,(选填“A”或“B”).
(2)某小组观察到沸腾前和沸腾时水中气泡上升过程中的两种情况,如下图乙中C、D所示,则图中
C
C
是水沸腾时的情况;
(3)从记录的数据看出,在某一次观察记录中明显错误的是第
17
17
min时的数据;
(4)从记录数据可得出的结论是:此时水的沸腾的温度为
98
98
℃,水在沸腾过程中温度
不变
不变
.(选填“升高”、“不变”或“降低”);
(5)在下图丙中以时间为横轴,以温度为纵轴,根据表中正确的数据作出水的沸腾图象;
(6)在这次实验中,发现从开始加热到沸腾这段时间过长.为了缩短实验的时间,可以采取的措施是
减小水的质量
减小水的质量
. (写出一条即可)

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1.如图所示,小明在做“观察水的沸腾的实验”中,实验记录表格如下:
时间(分) 11 12 13 14 15 16 17 18 19 20
温度(℃) 80 84 88 92 96 98 98 96 98 98
(1)观察到当水沸腾时,水中形成大量的气泡上升到水面破裂开来,里面的水蒸气散发到空气中.从实验可得出,沸腾是在液体
内部
内部
表面
表面
同时发生的剧烈的汽化现象.液体在沸腾过程中要吸热,但温度
保持不变
保持不变

(2)从记录的数据看出:①在第
18
18
分钟记录的数据是明显错误的;②水的沸点是
98
98
℃.
(3)小丽观察到沸腾前和沸腾时水中气泡上升过程中的两种情况,如图19(a)、(b)所示,其中图
a
a
是水沸腾时的情况.
(4)根据表格中的数据作出图(C)中水的沸腾图象.
(5)在这次实验中,发现从开始加热到沸腾的这段时间过长.请写出造成这种现象的其中一个原因
水的质量太大
水的质量太大
.你解决的办法是
换用小烧杯,减少水的质量
换用小烧杯,减少水的质量

2.如图是探究平面镜成像的实验装置,关于这个实验:
(1)应选择
平板玻璃
平板玻璃
来研究平面镜成像特点(填“平面镜”或“平板玻璃”);
(2)观察像时,会发现两个几乎重叠的像,这是
两个反射面
两个反射面
造成的;
(3)如果在像A′的位置放一个光屏,在光屏上
不能
不能
承接到像A′(填“能”或“不能”),说明平面镜成的像是
像;
(4)当蜡烛向靠近镜面的方向移动时像的大小将
不变
不变
(填“变大”、“变小”或“不变”).
(5)如图是小军本人,他在进行实验时,从镜中也观察到了自己的像.那么他在镜中看到自己的像应是图中的
A
A
 (填序号).

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There was a boy who was sent by his parents to a boarding school (寄宿学校).   36   being sent away, this boy was the   37   student in his class. He was at the top in every   38   always with high marks.
But the boy changed after   39   home and attending the boarding school. His grades started   40  . He hated being in a   41  . He was lonely all the time. And there were especially dark times when he   42   committing suicide (自杀). All of this was because he felt   43   and no one loved him.
His parents started   44   about the boy. But they even did not know what was   45   with him. So his dad decided to travel to the boarding school and   46   him.
They sat on the bank of the lake near the school. The father started asking him some casual questions about his classes, teachers and   47  . After some time his dad said, “Do you know, son, why I am here today?”
The boy answered back, “To   48   my grades?”
“No, no,” his dad replied. “I am here to tell you that you are the most   49   person for me. I want to see you   50  . I don’t care about grades. I care about you. I care about your happiness. YOU ARE MY LIFE.”
These words   51   the boy’s eyes to be filled with tears. He   52   his dad. They didn’t say anything to each other for a long time.
Now the boy had   53   he wanted. He knew there was someone on this earth who cared for him deeply. He   54   the world to someone. And today this young man is in college at the top of his class and no one has ever seen him   55  !
【小题1】
A.AfterB.BeforeC.WhenD.While
【小题2】
A.hardestB.naughtiestC.brightestD.dullest
【小题3】
A.examB.activityC.gameD.class
【小题4】
A.comingB.returningC.leavingD.reaching
【小题5】
A.risingB.increasingC.reducingD.dropping
【小题6】
A.groupB.termC.company D.party
【小题7】
A.led toB.felt likeC.thought backD.looked for
【小题8】
A.worthless B.carelessC.concernedD.annoyed
【小题9】
A.caringB.turningC.worryingD.speaking
【小题10】
A.crazyB.trueC.possibleD.wrong
【小题11】
A.talk withB.listen toC.tell toD.care about
【小题12】
A.familyB.friendsC.studyD.grades
【小题13】
A.realizeB.analyzeC.checkD.test
【小题14】
A.outstandingB.importantC.famousD.familiar
【小题15】
A.happyB.excellentC.interestedD.satisfied
【小题16】
A.causedB.wantedC.encouragedD.forced
【小题17】
A.answeredB.ignoredC.hatedD.hugged
【小题18】
A.nothingB.somethingC.everythingD.anything
【小题19】
A.showedB.meant C.intendedD.expressed
【小题20】
A.sadB.angryC.pleasantD.joyful

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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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